CMM Revision 8 for Saft 4579 Batteries
CMM Revision 8 for Saft 4579 Batteries
                                          HIGHLIGHTS
Discard any previous revision of the CMM and use the current revision dated Mar 15/19.
NOTE: The CMM can be downloaded from the internet at www.saftbatteries.com
Chapter/Section and
Page Number                   Description of Change                          Effectivity
Title Page                    Add Revision 8 with Date                       All Models
Page T-1
Record of Revisions           Add Revision 8                                 All Models
Page ROR-1
List of Effective Pages       Corrected/Changed pages                        All Models
Page LEP-1
List of Illustrations         Updated Figures                                All Models
Page LOI-1
List of Tables                Added more definition on table                 All Models
Page LOT-1
Introduction                  Corrected to Warning callouts                  All Models
Page Intro-2
Introduction                  Clarified step of electrolyte ingestion        All Models
Page Intro-3
Description                   Correction and updated figure                  All Models
Page 1
Testing and Fault Isolation   Corrected Flow chart                           All Models
Page 1002
Testing and Fault Isolation   Added clarification information and updated    All Models
Page 1003                     paragraph title
Testing and Fault Isolation   Provided procedural clarity and updated page   All Models
Page 1004 - 1006              information
Testing and Fault Isolation   Updated page information and provide step      All Models
Page 1007 - 1008              clarification
Testing and Fault Isolation   Added information clarification on cell        All Models
Page 1009                     replacement recommendations. Updated
                              page information
Testing and Fault Isolation   Updated page information. Added                All Models
Page 1010                     clarification on criteria for acceptable
                              capacity. Updated temperature and
                              resistance values to better represent room
                              temperature
Testing and Fault Isolation   Updated page information. Error Correction.    All Models
Page 1011                     Added information clarification on cell
                              replacement recommendations.
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Chapter/Section and
Page Number                   Description of Change                           Effectivity
Testing and Fault Isolation   Updated page information and table callouts     All Models
Page 1012 - 1016
Check                         Moved battery voltage check paragraph.          All Models
Page 5003                     Updated temperature and resistance values
                              to better represent room temperature
Assembly                      Updated page information, clarification to      All Models
Page 7001 - 7004              prevent cell movement, and update figure.
Illustrated Parts Lists       Updated table and quantities per assembly       All Models
Page 10003
Illustrated Parts Lists       Add title information to figures                All Models
Page 10004 - 10006
Storage                       Update information for Inactive long-term       All Models
Page 15001 -15003             storage and change page breaks to keep
                              information together
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                                                                                      Mar 15/19
                    ECCN: EAR99
                     Cage Code 09052
        711 GIL HARBIN INDUSTRIAL BOULEVARD
               VALDOSTA, GEORGIA 31601
      Phone: 1 (229) 247-2331   Fax: 1 (229) 247-8486
WITH
4579
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                        RECORD OF REVISIONS
REV   ISSUE     INSERT      BY          REV   ISSUE   INSERT    BY
NO.   DATE      DATE                    NO.   DATE    DATE
 1     02/28/84  03/01/84        Saft
 2     06/15/91  07/01/91        Saft
 3     01/30/98  01/30/98        Saft
 4     07/13/01  07/13/01        Saft
 5     06/16/17  06/16/17        Saft
 6     10/02/17  10/02/17        Saft
 7    Sep 6/18 Sep 6/18          Saft
 8    Mar 15/19 Mar 15/19        Saft
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PRODUCT IMPROVEMENTS
Product Improvements have been incorporated using service bulletins entered in the service
bulletin list. Service bulletin highlights are as follows:
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List of Illustrations     LOI-1        Mar 15/19   Fits and Clearances         8001       Sep 6/18
                          LOI-2        Blank                                   8002       Blank
List of Tables            LOT-1        Mar 15/19   Special Tools,              9001       Sep 6/18
                          LOT-2        Blank       Fixtures, and               9002       Blank
                                                   Equipment
Introduction              Intro-1      Sep 6/18
                          Intro-2      Mar 15/19   Illustrated Parts List      10001      Sep 6/18
                          Intro-3      Mar 15/19                               10002      Sep 6/18
                          Intro-4      Sep 6/18                                10003      Mar 15/19
                                                                               10004      Mar 15/19
Description and           1            Mar 15/19                               10005      Mar 15/19
Operation                 2            Sep 6/18                                10006      Mar 15/19
                                                                               10007      Sep 6/18
Testing and Fault         1001         Sep 6/18                                10008      Blank
Isolation                 1002         Mar 15/19
                          1003         Mar 15/19   Storage                     15001      Mar 15/19
                          1004         Mar 15/19                               15002      Mar 15/19
                          1005         Mar 15/19                               15003      Mar 15/19
                          1006         Mar 15/19                               15004      Sep 6/18
                          1007         Mar 15/19                               15005      Sep 6/18
                          1008         Mar 15/19                               15006      Blank
                          1009         Mar 15/19
                          1010         Mar 15/19
                          1011         Mar 15/19
                          1012         Mar 15/19
                          1013         Mar 15/19
                          1014         Mar 15/19
                          1015         Mar 15/19
                          1016         Mar 15/19
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TABLE OF CONTENTS
Introduction Intro-1
Disassembly 3001
Cleaning 4001
Check 5001
Repair N/A
Assembly 7001
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LIST OF ILLUSTRATIONS
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LIST OF TABLES
1 Leading Particulars 2
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INTRODUCTION
1.   General
     A.     This manual is written to the ATA Specification 100 and in AECMA Simplified
            English. International Standard units of measure are used in this manual, with
            imperial units in parentheses.
     B.     This manual describes maintenance on components in a workshop. It does not
            describe maintenance on components when they are installed in aircraft.
     C.     Only approved personnel with the necessary skill can do maintenance tasks
            described in this manual.
     D.     This manual contains:
            (1)     Technical data for components
            (2)     Maintenance procedures for components
            (3)     An Illustrated Parts List (IPL) with data for parts of components. Parts are
                    identified in all sections of the manual by IPL figure and item number.
     E.     We make sure of DISASSEMBLY, TESTING AND FAULT ISOLATION, and
            ASSEMBLY procedures by doing them.
     F.     The manual is divided into separate sections:
            (1)     Title Page
            (2)     Record of Revisions
            (3)     Record of Temporary Revisions
            (4)     List of Effective Pages
            (5)     Table of Contents
            (6)     Introduction
            (7)     Procedures and IPL Sections
     The disassembly and assembly sections generally contain only specific instructions used on
     the equipment covered herein. Most standard aerospace practices are not described
     herein.
     This manual provides the information necessary for an experienced shop technician to
     maintain Saft nickel-cadmium batteries. It describes construction of the battery, as well as
     techniques used to operate, maintain, and generally care for the battery. Following these
     instructions will enhance the ability to obtain optimum performance and maximum life from
     Saft batteries.
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     All aircraft batteries require checking and maintenance to make sure they are safe when
     installed and they perform their required functions especially in emergency conditions on
     board the aircraft. Maintenance checks also permit any problems to be identified and
     corrected. The maintenance interval is the period for which correct operation is assured
     with a low probability of failure and allows high levels of MTBUR and MTBF to be achieved.
     Every effort has been made to provide complete and accurate instructions. If a situation
     should arise that is not adequately described in this manual, please contact Saft via the
     internet at www.saftbatteries.com or at one of the following addresses:
2.   Definitions
     Warnings call attention to use of materials, procedures, or limits which must be followed
     precisely to avoid injury to persons.
     Cautions call attention to procedures which should be followed to avoid damage to
     equipment.
     Notes call attention to procedures which make the job easier.
3.   Safety
     WARNING: Except for those steps that require the battery to be charged, do all steps on
              discharged batteries (refer to Initial Discharge and Residual discharge) to
              avoid the possibility of electric shock. Tighten vent valves (3) prior to
              beginning discharge. Battery cells deliver very high current when short-
              circuited. Exercise caution. Remove rings, watches, necklaces, metallic belts
              and other jewelry to avoid electric shock.
     WARNING: Do not tilt the battery during maintenance, any contact of skin with electrolyte
              can cause severe burns.
     Safety rules are different from one country to another. Always follow local safety
     regulations.
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     There are three types of risks.
     A.     Physical
            (1)     Handling: the battery is heavy. When you lift it, bend your legs and not your
                    back.
            (2)     Use protective shoes.
     B.     Electrical
            (1)     Do not wear rings, watches, chains, belt buckles, necklaces, or any other
                    metallic objects.
            (2)     Use insulated tools.
     C.     Chemical
            (1)     For a complete listing of hazards, refer to the safety information sheet
                    available on Saft's website at www.saftbatteries.com.
            (2)     Electrolyte is very corrosive and can damage the skin: use gloves and an
                    apron. If it touches the skin, flush affected part with large quantity of water.
                    Remove contaminated clothing, after flushing begins.
            (3)     Electrolyte is very dangerous for eyes, use protective goggles. If the
                    electrolyte comes in contact with an eye, flush it with water and get medical
                    attention immediately.
            (4)     Electrolyte ingestion can cause damage to the throat and the respiratory
                    tract. Do not try to vomit and get medical attention immediately.
            (5)     Skin contact with nickel can cause chronic eczema.
            (6)     Inhalation of cadmium oxide can cause dry throat, headaches, vomiting,
                    chest pain. If inhaled, move to fresh air. If not breathing, give artificial
                    respiration. If breathing is difficult, give oxygen and get medical attention
                    immediately.
            (7)     Potassium hydroxide in the electrolyte can cause eczema.
4.   New Battery Commissioning
     NOTE: Whether or not the battery has been subject to disassembly and reassembly,
           before going into service and installation, the tightness of all upper nuts / screws
           must be checked to verify that torque values correspond with those specified (refer
           to the Table 8001).
     Saft batteries are shipped discharged. A visual inspection, torque check, charge procedure,
     electrolyte check, and insulation test should be done prior to the battery being placed into
     the aircraft for service. Refer to the Figure 1001.
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5.      Battery Ratings
        A.      Capacity
                Nickel-cadmium batteries are rated in terms of capacity in ampere-hours (Ah) (rated
                capacity).
                Other definitions for battery ratings can be found in EN2570, IEC 60952, and RTCA
                DO 293.
6.      Recycling
        All batteries eventually lose their ability to perform and are eligible for scraping and
        recycling. Saft takes environmental matters seriously and advocates proper recycling of
        nickel-cadmium batteries and their components. To that end, Saft operates recycling
        facilities in both Europe and North America.
        Nickel-cadmium batteries contain nickel, cadmium, and potassium hydroxide and should be
        disposed of properly. In all cases, rely on local and national regulations for proper battery
        disposal and/or shipping to an appropriate recycling location.
Verification:
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1.   Description
     The Nickel Cadmium Battery provides power either to the standby system or to start the
     auxiliary power unit (APU). It is a nickel-cadmium type with sintered plate construction and
     uses a potassium hydroxide electrolyte. The battery consists of a case and cover, 20 cell
     assemblies, and a harness assembly. The harness assembly includes a thermoswitch
     mounted on a plate against the end of the center row of cells. A charge control thermistor
     is located between cells 6 and 9 in the center row of cells.
2.   Operation
     The battery is charged on the aircraft by an on-board charger. The charge control
     thermistor provides a signal to the charger to compensate the charge according to the
     battery temperature. The thermostat will cut off the charger if the battery temperature
     exceeds a safe operating limit.
                                   Nickel-Cadmium Battery
                                           Figure 1
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Voltage:
     Nominal                                     24 Volts
     Open Circuit Voltage (fully charged)        26 ± 1 Volts
Weight                                           96 lb. (43.64 Kg)
Dimensions (Maximum):
     Height                                      11.4” (285 mm)
     Length (including side brackets)            13.0” (325 mm)
     Width (including handles)                   11.0” (275 mm)
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1.   General
     This section contains battery functional tests and fault isolation information. Test
     procedures are written in a step-by-step format following Figure 1001. Fault isolation
     information is presented in chart form (Table 1004).
     NOTE: All ( ) part identification numbers herein are IPL, Figure 10001 item numbers.
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RECEIVED
PASS
> 1.5V
                                               FAIL
                                                                                      DISASSEMBLY
                                                                                       [Page 3001]
Initial and Residual
      Discharge          PASS
[TESTING 3. D. and
                                       A                                                                                      < 1.5V     Cell Voltage
         3. E.]                                                                                                                          [TESTING 3.
                                                                                                                                            G. (4]
            FAIL
                                                                                    Harness Assembly
                                                                                     [TESTING 3. K.]                                            > 1.5V
  Clean and Test
                                                                                                                  C
    Vent Valves
  [TESTING 3. F.]
                                                                                                                                       Insulation Check
                                                                                    Clean Disassembled                                   [CHECK 3. B.]
                                                                                          Battery
                                                                                       [CLEANING 3.]
     Charge
 [TESTING 3. G.]                                                                                                                        Check Cell Nut
                                                                                                                                            Torque
                                                                                        ASSEMBLY
                                                                                                                                         [CHECK 3. C.]
                                                                                       [Page 7001]
Adjust Electrolyte
 [TESTING 3. H.]                                                                                                                       Return To Service
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3.   Testing
     A.    Test Conditions
           (1)      Facilities and equipment
                 CAUTION:     FUMES FROM LEAD ACID BATTERIES OR SMALL TRACES OF
                              SULFURIC ACID ENTERING A NI-CD BATTERY CAN CAUSE
                              PERMANENT DAMAGE.
                    (a)     Service facilities for Ni-Cd batteries must be entirely separate from
                            those for lead acid batteries.
                    (b)     Equipment used to service lead acid batteries must not be used to
                            maintain Ni-Cd batteries.
           (2)      For optimum results conduct all tests with the battery temperature at 77 +
                    18°F + (25.0 + 10°C), unless otherwise noted in this manual.
     B.    Test Equipment
           Refer to Section (Special Tools, Fixtures, and Equipment) for a complete list of all
           test equipment required for proper maintenance of a Ni-Cd battery.
     C.    Polarization Test
           (1)      Charge the battery at 0.1C1 for 1.5 hours.
           (2)      Keep the battery in open circuit for 1 hour.
           (3)      Measure the open circuit voltage of each cell.
                    (a)     If any cell is zero (0) V or negative polarity, mark for replacement any
                            cell(s). See Cell Replacement on page 1011 which requires
                            disassembly to replace marked cells.
                    (b)     If all cells are greater than 0V, then continue with Figure 1001.
     D.    Initial Discharge / Capacity Check
           The purpose of this discharge procedure is to determine the initial capacity of a
           battery when it is removed from the aircraft, either for routine maintenance or for
           investigation of a malfunction. The test also is used in the commissioning of a new
           battery to verify performance before being placed into service. The results of this
           initial discharge will determine the steps that should be taken.
           (1)      Discharge the battery at a rate listed in Table 1001 until the battery reaches
                    20.0 V.
           (2)      Record the time at the start of the discharge and the discharge current.
           (3)      Monitor individual cell voltages periodically during the discharge.
           (4)      Record the time that the first cell reaches 1.0 V.
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     NOTE          It is not a cause for concern if a cell goes to zero volts or reverses polarity
                   during the battery discharge. Simply short out the cell’s terminals for the
                   remainder of the discharge.
     (5)     When the battery terminal voltage reaches 20.0 V, stop the discharge and
             record the time.
     (6)     Interpretation of the Initial Discharge Results.
             Based on the amount of time to discharge the first cell to 1.0 V the following
             will apply:
             (a)        If the first cell discharge time at the specified rate is greater or equal
                        to the minimum time listed in Table 1001, the battery and all cells are
                        considered above rated capacity, “PASS”. Proceed to Figure 1001.
             (b)        If the first cell discharge time at the specified rate is less than the
                        minimum time listed in Table 1001, the battery capacity does not
                        comply, “FAIL”. Proceed to Figure 1001.
                                        DISCHARGE TIMES
           DISCHARGE             FIRST CELL MINIMUM DISCHARGE TIME TO 1 VOLT
           RATE (AMPS)         BATTERY WITH PRIOR SERVICE      NEW BATTERY
                                FROM STORES OR AIRCRAFT
                   10                 260.0 MINUTES            270.0 MINUTES
                   20                 130.0 MINUTES            135.0 MINUTES
                   40                  64.5 MINUTES             67.0 MINUTES
                   45                  60.0 MINUTES             60.0 MINUTES
                                           Discharge Times
                                              Table 1001
E.   Residual Discharge
     Discharge each cell in the battery to 0V using one of the first two procedures
     methods that follow.
     NOTE:         It is not necessary to have a rest period between initial discharge and
                   residual discharge.
     (1)     Method 1
             Continue to discharge the battery at a rate listed in Table 1001 until the
             battery voltage <1.0 V, connect a 1.0 Ω (3.0 watt minimum) resistor (T03)
             across each cell’s terminals. Leave the resistor (T03) in place for 16 to 24
             hours to allow each cell to completely discharge.
     (2)     Method 2
             Continue to discharge the battery at a rate listed in Table 1001 until the
             battery voltage drops to <0.5 V, Insert a shorting clip between its terminals.
             Leave these clips on for 16 hours to allow the cells to completely discharge
             and the battery to cool.
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     (3)     Remove the shorting devices.
     (4)     If no cells are marked for replacement, then return to Figure 1001 utilizing
             the PASS or FAIL results of the Initial Discharge / Capacity Check.
     (5)     If cells were marked for replacement, then return to Special Testing.
F.   Vent Valve Test
     NOTE:      This test can be omitted if the vent valves are replaced annually.
     Check the operation of the vent valve assemblies as follows:
     (1)     Use the pressure test fixture (T05) or prepare a fixture from stainless steel
             tubing with an end adapter threaded on the inside to match the vent valve
             threads (M8 x 1.00). The adapter can be made from 1/2 inch round stock
             with 1/4 inch I.D. hole.
     (2)     Screw the valve (3) with its O-ring (4) into the adapter end of the pressure
             test fixture.
     (3)     Attach the fixture to a compressed air line through an adjustable pressure
             reducing valve limited to 20 psi (1.4 bar).
     (4)     Immerse the valve and end of fixture in water, and slowly raise the pressure.
             Make sure the valve opens between 2 psi and 10 psi (0.14 to 0.69 bar).
     (5)     Reuse only those vent valves that open in the 2 psi to 10 psi (0.14 to 0.69
             bar) range. Re-soak those valves that do not open at 10 psi. Discard valves
             that are not gas tight at low pressure.
G.   Charge
     NOTE:      The battery temperature at the start of a charge procedure must be at
                room temperature 22.8 ± 7.2°C (73 ± 13°F). A 2-3 hour rest is required
                following a discharge procedure. The rest period between the end of
                charge and the start of discharge procedures must be between 1 hour
                and 24 hours to ensure a valid capacity test.
     CAUTION:      ATTEMPTING TO CHARGE BATTERIES WITH LOW
                   ELECTROLYTE LEVELS IN ANY CELL MAY CAUSE PERMANENT
                   DAMAGE TO THAT CELL.
     (1)     Remove the cover (8), pad (9) and formed insulator (10).
     (2)     Loosen, but do not remove, all vent valves (3).
             CAUTION: CHECK INDIVIDUAL CELL VOLTAGES AT THE BEGINNING
                      OF THE CHARGE. IF ANY CELL INDICATES AN IMMEDIATE
                      VOLTAGE RISE ABOVE 1.50 VOLTS, ADD ABOUT 10 CM3
                      OF DISTILLED OR DEMINERALIZED WATER THROUGH
                      THE VENT VALVE OPENING OF THAT CELL.
     (3)     Charge using one of the two methods shown in Table 1002 and during the
             during the last 30 minutes of the overcharge cycle, adjust the Electrolyte
             Level.
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                                                    CONSTANT CURRENT CHARGE
               Method                         Main Charge                     Overcharge
                              4.5 Amps until battery reaches 30 V     4.5 Amps – all cells > 1.5 V
                               Time:
                    1             Minimum:         10 hours           Time:
                                  *Maximum:        12 hours               4 hours
                               *New batteries may take 2.5 hours longer to reach the specific voltage
                              22.5 Amps until battery reaches 31 V           4.5 Amps – all cells > 1.5 V
                               Time:
                    2             Minimum:         2 hours                   Time:
                                 **Maximum:        2 hours 30 min.               4 hours
                           **New batteries may take 30 minutes longer to reach the specific voltage
                                       Current Charge Rates
                                             Table 1002
     (4)     During the last 30 minutes of overcharge check that the cell voltages meet
             the value shown in Table 1003 mark all cell(s) that do not comply, perform
             Special Testing.
                                           CELL VOLTAGE
                                      Last 30 minutes at 0.1C1A
                                                > 1.50V
                                       Overcharge Voltage Limit
                                             Table 1003
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      (b)     Withdraw the plunger and check for any liquid in the syringe (T02).
              1. If the liquid level is too low, the syringe will remain empty,
                 indicating that the end of the syringe nozzle did not reach the
                 liquid in the cell.
              2. Any excess liquid in the cell will be drawn into the syringe (T02)
                 until the electrolyte is level with the end of the nozzle. This is the
                 correct level for the electrolyte.
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I.   Capacity Check (Second Discharge)
     The purpose of this discharge procedure is to verify that the initial battery
     maintenance of discharge and charge has corrected any low capacity and/or cell
     imbalance that existed in the battery when the initial discharge was performed.
     (1)    Discharge the battery at one of the rates listed in Table 1001 until the battery
            reaches 20.0 V.
            (a)     Record the time at the start of the discharge and the discharge
                    current.
            (b)     Monitor individual cell voltages periodically during the discharge.
            (c)     Record the time that the first cell reaches 1.0 V.
            NOTE It is not a cause for concern if a cell goes to zero volts or reverses
                 polarity during the battery discharge. Simply short out the cell’s
                 terminals for the remainder of the discharge.
     (2)    Interpretation of the Capacity Check (Second Discharge) Results
            (a)     Regardless of the results obtained in the first discharge, the battery
                    capacity is > 100% when the discharge time for first cell to 1.0 volt
                    meets or exceeds the minimum time listed in Table 1001. Refer to
                    Figure 1001.
            (b)    If the discharge time for first cell to 1.0 volt is less than the minimum
                   time listed in Table 1001, the capacity is <100%. Refer to Figure
                   1001. This would require Special Testing, or refer to Fault Isolation.
J.   Special Testing
     These procedures are to be followed for a new battery that has been stored, a
     battery with prior service that does not meet capacity, an in-service battery that does
     not regain capacity, and/or a battery with an end of charge voltage <1.50 V/cell
     during the overcharge.
     NOTE: It is best to assume that all the original cells are or soon will be in
           unsatisfactory condition due to length of service, heat, overcharge, etc. and
           Saft strongly recommends all cells should be replaced with new Saft cells if:
             •    three cells or more cells are replaced during the same maintenance
                  interval
             Or
             •    one or more cells required replacement after five cells were replaced
                  over the life of the battery
            The following conditions are not to be counted in determining for the above
            recommendation:
            - Mechanical failure such as terminal thread damage,
            - Cell leakage,
            - Cell short-circuit
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     NOTE:     Except for batteries from long-term storage, it is recommended that a
               battery requiring Special Testing more than 3 times that it be replace by a
               Saft battery.
     NOTE:     For a battery from long-term storage, several complete charge/discharge
               cycles may be required to restore performance.
     (1)     The vent valves (3) should be installed on top of each cell, then discharge
             the battery to 1 volt/cell using one of the rates listed in Table 1001.
             a. If the battery has completed the above step three times, then it is
                recommended to mark for replacement any cell(s) that do not meet the
                times listed for the Table 1001 rates.
     (2)     Continue to discharge the battery to 0V using section entitled Residual
             Discharge.
     (3)     Replace all cell(s) marked for replacement per Cell Replacement.
     (4)     Loosen, but do not remove, all vent valves (3) and charge the battery per
             Method 1 per Table 1002.
     (5)     Continue charging at 4.5A for an additional 4 hours. During the last 30
             minutes adjust the Electrolyte Level.
     (6)     Monitor and record individual cell voltages every 15-20 minutes during the
             additional 4 hour overcharge.
     (7)     Mark any cells for replacement that do not comply with Table 1003.
     (8)     Discharge the battery at one of the current rates and times shown in Table
             1001 until the battery reaches 20.0V. Record the time the first cell reaches
             1.0V.
     (9)     If no cell(s) requirement replacement and the time the first cell reaches 1.0V
             equals or exceeds the values shown in Table 1001, then return to Figure
             1001.
     (10)    If cell(s) are marked for replacement or the time the first cell reaches 1.0V is
             less than the values shown in Table 1001, then repeat this procedure Special
             Test or refer to Fault Isolation.
K.   Harness Assembly
     NOTE:     A climate chamber or alternate method may be used provided the
               temperatures below are achieved.
     (1)     Charge Control Thermistor Test
             The charge control thermistor is part of the harness assembly (22). It is
             permanently mounted on a sensor plate (23) between cells #6 and #9.
             Disassembly is required to test the charge control thermistor (Disassembly).
             Check the function of the charge control thermistor as follows:
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      (a)      Ensure that the internal battery temperature is at 73°F ± 9°F (22.8°C
               ± 5.0°C). Connect an ohmmeter to pins 1 & 3 of the connector and
               verify the ohmmeter reading indicates a closed circuit (<1MΩ).
      (b)      Connect an ohmmeter to connector pins 11 and 12 of the harness
               assembly (22). Verify the ohmmeter reads 1854Ω to 3116Ω at 73°F
               ± 9°F (22.8°C ± 5.0°C).
      (c)      Immerse the thermistor plate in a beaker containing a mixture of ice
               and water.
      (d)      Insert a thermometer or other suitable temperature-measuring
               device, in the container in contact with the plate.
      (e)      Verify the ohmmeter indicates 7355Ω ± 672Ω at 32°F ± 3°F (0.0°C ±
               1.7°C).
      (f)      Following the low temperature test, slowly raise the temperature to
               140°F ± 5°F (60.0°C ± 2.8°C).
      (g)      Verify the ohmmeter indicates 560Ω ±60Ω at 140°F ± 5°F (60.0°C ±
               2.8°C).
            NOTE:     At 160°F ±5°F (71.1°C ± 2.8°C) the thermistor resistance shall
                      be 380 ± 38Ω.
      (h)      If the thermistor fails any of the above tests, replace the harness
               assembly (22) with a factory new.
(2)   Overtemperature Thermoswitch
      NOTE:         A climate chamber or alternate methods may be used provided the
                    temperatures below are achieved.
      The overtemperature thermoswitch is part of the harness assembly (22). It
      is mounted on the plate (23) in contact with the face of cell #4. Disassembly
      is required to test the thermoswitch (Disassembly). Check the function of the
      overtemperature thermoswitch as follows:
      (a)      Connect an ohmmeter to connector pins 8 and 9 of the harness
               assembly (22). Ohmmeter should read open (> 1MΩ) at 73°F ± 9°F
               (22.8°C ± 5.0°C).
      (b)      Suspend the thermoswitch plate (23) with thermoswitch in a beaker
               of water with the thermoswitch a minimum of 2 inches from the
               bottom and 1 inch from the top of the water surface.
      (c)      Insert a thermometer, or other suitable temperature-measuring
               device in the water with the bulb adjacent to the thermoswitch.
      (d)      Slowly raise the water temperature to 150°F (66°C) while observing
               the ohmmeter (still connected to pins 8 and 9). Ohmmeter should
               read >1 MΩ at temperatures below 150°F (66°C).
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            (e)     Continue to raise the water temperature and allow the temperature to
                    stabilize at 68°C ± 5.0°C (155°F ± 9°F). The thermoswitch should
                    close (< 5Ω resistance) at a stabilized temperature of 68°C ± 2.8°C
                    (155°F ± 5°F).
            (f)     Slowly add cool water to the beaker to reduce the water temperature
                    to 131°F ± 9°F (55°C ± 5.0°C). The thermoswitch should open (>1
                    MΩ) at a stabilized temperature of 131°F (55°C).
            (g)     If the thermoswitch fails to meet any of the above criteria, replace the
                    harness assembly (22) with factory new.
L.   Cell Replacement
     NOTE: It is best to assume that all the original cells are or soon will be in
           unsatisfactory condition due to length of service, heat, overcharge, etc. and
           Saft strongly recommends all cells should be replaced with new Saft cells if:
             •    three cells or more cells are replaced during the same maintenance
                  interval
             Or
             •    one or more cells required replacement after five cells were replaced
                  over the life of the battery
            The following conditions are not to be counted in determining for the above
            recommendation:
            - Mechanical failure such as terminal thread damage,
            - Cell leakage,
            - Cell short-circuit
     (1)    Discharge the battery completely by performing Residual Discharge.
     (2)    Remove upper cell terminal nuts (5A), connector nuts (20) if required,
            washers (6), washers (21) if required, and intercell connecting links (11
            through 15) from the cell to be replaced.
     (3)    Attach cell puller tool (T04) to the cell’s terminal and remove cell from the
            case using a steady upward pull.
     (4)    Insert a new Saft cell into the case and pushing it downward on the cell
            terminals (with a small block of soft wood if necessary)
            NOTE:      New cell must be discharged before installation is performed.
     (5)    Attach intercell connecting links (11 through 15), washer (6), washers (21) if
            required, upper cell terminal nuts (5A), connector nut (20) if required, and
            torque nuts per Table 8001.
     (6)    Continue with battery maintenance as outlined in Figure 1001.
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4.     Fault Isolation
       Fault isolation information is presented in Table 1004 as a guide in locating a cause of
       malfunction and isolating the cause to a specific component.
             FAULT                    POSSIBLE CAUSE                         REMEDY
 Zero volts with battery on       Defective electrical          Check electrical contacts, links
 “charge"                         connector (not making         and tightness of nuts (Check)
                                  contact).
                                          Fault Isolation
                                        Table 1004 (#1 of 5)
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Retighten vent-valve
Traces of electrolyte in battery   Damaged cell case            Check sealing of cells (Check)
box
                                   Leakage of electrolyte       See “Electrolyte Leakage” in this
                                                                section.
                                          Fault Isolation
                                        Table 1004 (#2 of 5)
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  more than 30% above              Leaking cell(s)             Check sealing of cell(s) (Check)
  average
                                                               Disassemble and clean the
                                                               battery (Disassembly and
                                                               Cleaning)
  25% or less of the average       Cell(s) with damaged        Do Special Testing (Testing and
  value                            separator(s)                Fault Isolation) If necessary,
                                                               replace with new Saft cell
                                                               (Disassembly, Assembly)
Corrosion on links                 Operation in acid           Make sure that battery test bench
                                   atmosphere                  and storage areas are free from
                                                               materials which may produce acid
                                                               fumes
                                   Mechanical damage to        Replace damaged links
                                   nickel plating              (Disassembly and Assembly)
                                          Fault Isolation
                                        Table 1004 (#3 of 5)
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Cell with abnormally high         Cell dry or insufficient       As soon as the fault is observed
voltage at start of charge        electrolyte level              add 10 cm3 of distilled water to the
                                                                 cell. Do not adjust precisely until
                                                                 the end of charge
Main charge cut off voltage       Battery not fully discharged   Repeat Charge, Discharge, and
reached before minimum time       or strongly unbalanced         Residual Discharge up to three
or not reached at the                                            times
maximum time
                                                                 Replace with new SAFT cell
                                                                 (Disassembly, Assembly)
Low capacity cell (reversed       Normal wear after long         Repeat Charge, Discharge, and
polarity, or a normal polarity    service                        Residual Discharge up to three
voltage of less than 1 V at the                                  times
end 1C1)
                                                                 Replace with new SAFT cell
                                                                 (Disassembly, Assembly)
                                          Fault Isolation
                                        Table 1004 (#4 of 5)
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Cell with swollen case           Cell operated with low        Replace with new SAFT cell (Cell
                                 electrolyte level,            Replacement)
                                 deterioration of separator
                                 and damaged plates
Cell with zero voltage when      Short circuited cell          Replace with new Saft cell (Cell
battery circuit is open                                        Replacement)
                                          Fault Isolation
                                        Table 1004 (#5 of 5)
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DISASSEMBLY
1.   General
     Prior to disassembly, see Testing and Fault Isolation to determine condition of the battery,
     cause, and remedy of malfunction. Disassemble only to the extent necessary to permit
     replacement.
NOTE: All ( ) part identification numbers herein are IPL, Figure 10001 item numbers.
2.   Detailed Instructions
     WARNING:       BATTERY CELL ASSEMBLIES DELIVER VERY HIGH CURRENTS WHEN
                    SHORT-CIRCUITED. EXERCISE CAUTION. REMOVE RINGS, WATCHES
                    OR OTHER JEWELRY FROM HANDS AND ARMS.
     WARNING:       USE CARE NOT TO TILT BATTERY WHILE VENT VALVES ARE
                    LOOSENED; CONTACT OF ELECTROLYTE WITH SKIN CAN CAUSE
                    SEVERE BURNS.
     A.      Completely discharge the battery per Initial Discharge and Residual Discharge.
     B.      Remove cover (8), pad (9) and formed insulator (10) assembly by opening latches
             and lifting from case.
     C.      Remove cell assembly upper terminal nuts (5A) , connector nuts (20) and washers
             (6 & 21) from terminals of cell assemblies (2) and main connector (16).
     D.      Remove intercell terminal links (11 through 15) from terminals of cell assemblies (2)
             and main connector (16) being careful not to damage the nickel plating.
     E.      Remove the battery connector receptacle (16) from the battery case (7) by removing
             screws (18).
     F.      Remove connector receptacle gasket (17) from the battery case (7).
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G.   Using the vent valve wrench (P/N 093382-000) (29) or T01, loosen the vent valves
     (3) of all cells to relieve any pressure; then re-tighten vent valves (use only finger
     pressure on wrench when installing).
H.   Using cell puller tool (T04), remove cell assemblies (2) from the battery case (7) by
     tightening the puller tool on cell terminals and removing cell with a steady straight up
     pull.
I.   Disassembly of the cell assemblies (2) is restricted to replacing defective vent valve
     O-rings (4) and the lower terminal O-rings (2A) .
J.   Remove the harness assembly (22):
     (1)    Remove the thermoswitch mounting nuts (25) from the thermoswitch plate
            (23).
     (2)    Remove the harness connector mounting screws (24) and nuts (25) and lift
            the harness connector assembly (22) out of the battery case (7).
K.   Remove all liners (27) from the battery case (7).
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CLEANING
1.   General
     CAUTION:       DO NOT USE PETROLEUM SPIRITS, TRICHLOROETHYLENE OR
                    OTHER SOLVENTS FOR CLEANING THE BATTERY. USE OF THESE
                    PRODUCTS MAY DETERIORATE THE INTEGRITY OF METAL PARTS.
     A.      The following items are required to perform the cleaning procedures (equivalent
             substitutes can be used):
             Stiff bristle brush (nonmetallic)
             Dry compressed air source, less than 20 psi (1.4 bar)
             Safety goggles
             Lubricant (non-acid petroleum jelly)
             Soft, clean cloth (two required)
             Isopropyl alcohol (or non-petroleum based) degreasing agent
             Running water
             Soap
             Distilled or de-ionized water
2.   Light Cleaning (Assembled Battery)
     NOTE:          All ( ) part identification numbers herein are IPL, Figure 10001 item numbers.
     A.      Remove the battery cover (8), pad (9) and formed insulator (10).
             CAUTION:       VENT VALVES MUST BE CLOSED TO PREVENT DIRT AND
                            FOREIGN MATTER FROM ENTERING CELLS DURING
                            CLEANING. VENT VALVES SHOULD BE CLOSED AT ALL TIMES
                            (TO AVOID EXPOSURE TO CO2), EXCEPT AS DIRECTED
                            OTHERWISE HEREIN. OVEREXPOSURE TO CO2 WILL AFFECT
                            BATTERY PERFORMANCE OVER TIME.
     B.      Using vent valve wrench (P/N 093382-000) (29) or T01, make sure that the vent
             valves (3) of all cell assemblies (2) are closed and secure. Do not over-tighten.
             CAUTION:       DO NOT USE A WIRE BRUSH TO CLEAN CELL TOPS. CELLS
                            MAY BE DAMAGED.
     C.      Remove white deposits (potassium carbonate) from tops of all cell assemblies (2)
             using a stiff, bristle nonmetallic brush.
             WARNING:       TO PREVENT INJURY WHEN USING COMPRESSED AIR, DIRECT
                            AIRFLOW AWAY FROM BODY. USE SAFETY GOGGLES TO
                            PREVENT INJURY TO EYES FROM FINE DUST PARTICLES.
     D.      Disperse residual dust and particles from the battery with blasts of clean, dry,
             compressed air not over 20 psi (1.4 bar).
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     E.    Coat cell assembly upper terminal nuts (5A), connector nuts (20) and all intercell
           terminal links (11 through 15) with a light film of non-acid petroleum jelly.
     F.    Clean the exterior surfaces of the battery cover (8) and battery case (7) using a soft,
           clean cloth, moistened with water. Dry with compressed air or a dry, clean cloth.
3.   Thorough Cleaning (Disassembled battery)
     A.    Discharge the battery (Initial Discharge and Residual Discharge).
     B.    Disassemble the battery (Disassembly).
     C.    Remove greasy residue from battery connector receptacle (16) with isopropyl
           alcohol.
     D.    After ensuring that the vent valves (3) are closed, wash each cell (2) in running
           water. Do not allow any water to enter the cell. Dry with compressed air or a dry,
           clean cloth.
     E.    Wash the battery case (7), cover (8) and pad (9), liners (27), gasket (17), links (11
           through 15), and cell hardware (5A and 6) in warm, soapy water to remove dirt and
           salt deposits. A plastic scraper or a stiff bristle brush (nonmetallic) may be used to
           aid in the removal of heavy deposits. Rinse away all soap, and dry with compressed
           air or a dry, clean cloth.
           CAUTION      THE LENGTH OF TIME VENT VALVES ARE REMOVED FROM THE
                        CELL ASSEMBLIES SHOULD BE KEPT TO A MINIMUM. OVER
                        EXPOSURE OF THE ELECTROLYTE TO THE ATMOSPHERE WILL
                        AFFECT BATTERY PERFORMANCE DUE TO CO2
                        CONTAMINATION.
     F.    Remove the vent valves (3) from the cell assemblies (2), and submerge them and
           the O-rings (4) in a clean container of distilled or deionized water. This treatment
           will dissolve any salt deposits that may have accumulated in the vents of the valves
           or around the seat. Cover the cells (2) with a damp, clean cloth, or take other
           precautions to prevent any foreign particles from falling into the cells while the
           valves are removed.
     G.    Test the vent valve assemblies (3) to ensure they operate within the correct
           pressure range (Vent Valve Test).
     H.    Install vent valve assemblies (3) with vent wrench (P/N 093382-000) (29) or T01.
     I.    Assemble the battery (Assembly).
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CHECK
1.   General
     This section contains battery functional checks information. Check procedures are written
     in step-by-step formats that follow the process flow outlined in Figure 1001. A request for
     overhaul or restoration should follow this same procedure
2.   Initial Commissioning
     A.      Before the initial charge, thoroughly inspect the battery assembly to insure no
             damage has occurred during shipping or storage as follows:
             NOTE:      All ( ) part identification numbers herein are IPL, Figure 10001 item
                        numbers.
             (1)     Inspect the battery case (7) and cover (8) for dents, distortion, or other
                     damage. Straighten with a small rubber mallet if necessary.
             (2)     Remove the battery cover (8), pad (9) and formed insulator (10).
             (3)     Visually verify the connector-receptacle (16) is present and undamaged.
             (4)     Visually verify all cells (2) are positioned for proper polarity per Figure 7002.
             (5)     Visually verify all cells (2) are equipped with a vent valve (3).
             (6)     Torque all upper cell nuts (5A) and connector nuts (20) per Table 8001.
             (7)     Visually verify the harness assembly (22) is present and undamaged.
     B.      Charge the battery per Charge on page 1005 and level electrolyte per Electrolyte
             Leveling on page 1006.
     C.      Place battery in service.
3.   Assembled Battery
     NOTE:           A request for overhaul or restoration should follow this same procedure.
                     Test procedures are written in step-by-step formats that follow the process
                     flow outlined in Figure 1001.
     The following procedures are for an assembled battery (7) with battery cover (8), pad (9)
     and formed insulator (10) removed.
     A.      Visually Inspection
             Visually inspect the battery for evidence of damage or electrolyte leakage. If
             damage to any part(s) are visible, refer to Testing and Fault Isolation for applicable
             procedures.
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     CAUTION:         A BREAKDOWN IN ELECTRICAL INSULATION BETWEEN THE
                      CELLS AND THE BATTERY CASE WILL RESULT IN “LEAKAGE”
                      CURRENT, WHICH OVER A PERIOD OF TIME CAN DISCHARGE
                      THE BATTERY.
     (1)    When inspection reveals electrolyte leakage from the cell at the vent hole
            opening, replace the defective O-ring (4) as follows:
            (a)     Using the vent-valve wrench (P/N 093382-000) provided with the
                    battery (29) or T01, loosen and remove the vent valve (3) from the
                    cell assembly (2).
            (b)     Cover the cell with a damp, clean cloth to prevent any foreign
                    particles from falling into the cell.
            (c)     Remove the defective O-ring (4) from the vent valve (3), and install a
                    new O-ring (4) onto the vent valve (3).
            (d)     Remove the cloth from the cell and insert the vent valve (3) into the
                    cell assembly (2). Using the vent valve wrench (P/N 093382-000)
                    (29) or T01), tighten the vent valve securely in place. To ensure they
                    are tightened properly, use only finger pressure on the wrench.
B.   Cell-to-Case Insulation Test
     A breakdown in electrical insulation between the cells and the battery case will result
     in a “leakage” current, which over a period of time, can discharge the battery. The
     most common cause for the loss of insulation is the leakage of electrolyte from the
     cells which can act as a conductor between the cell plates (or terminals) and the
     battery container. Because the leakage current can affect battery performance, it is
     necessary that it is kept to a minimum.
     NOTE: Method A or B may be used to check with insulation breakdown.
     (1)    Method A
            (a)    Set up the multimeter for current measurement and connect the
                   negative lead to the battery container, and the positive lead to the
                   positive terminal of the battery, then to the positive terminal on each
                   cell.
            (b)    If while performing the above, the reading is greater than 500mA
                   (indicating a reduction in insulation resistance), the battery should be
                   disassembled fully and cleaned (Disassembly, Cleaning, Assembly).
            (c)    If, after cleaning and assembly, a leakage current is still indicated by
                   the test described in steps (1) through (2), one or more cells are
                   defective. Isolate and replace the defective cell(s) (Disassembly and
                   Assembly).
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     (2)     Method B
             (a)      Measure the insulation resistance between the block of cells and the
                      metal box. The value measured must be greater than 10MΩ under a
                      DC voltage 250V continuous using a megohmmeter.
             (b)      If while performing the above, the criteria is not meet, the insulation
                      should be considered defective. The battery should be disassembled
                      fully and cleaned (Disassembly, Cleaning, Assembly).
             (c)      If after cleaning and assembly, the resistance is still less than 10MΩ,
                      one or more cells are defective. Isolate and replace the defective
                      cell(s) (Disassembly and Assembly).
C.   Cell Nut Torque
     Check the torque on each upper terminal nut (5A) and connector nuts (20) per Table
     8001.
D.   Battery Voltage
     Measure the voltage at the battery connector and verify the voltage is greater than
     21V, return to Figure 1001.
E.   Check all ventilation openings to make sure that they are clean and clear.
F.   Harness Assembly
     NOTE:         A climate chamber or alternate methods may be used provided the
                   temperatures below are achieved.
     NOTE:         This harness assembly check may be substituted with the paragraph
                   Harness Assembly testing contained in TESTING and ISOLATION
                   section.
     If any part of the harness assembly (22) is damaged, the entire assembly must be
     replaced (Disassembly, Assembly).
     (1)     Connect an ohmmeter to pins 1 & 3 of the connector at 73°F ± 9°F (22.8°C ±
             5.0°C). Ohmmeter reading should indicate a closed circuit (<1 MΩ). An
             erratic reading represents a failure.
     (2)     Connect an ohmmeter to connector pins 11 and 12 of the harness assembly
             (22). Verify the ohmmeter reads 1977Ω to 3081Ω at 73°F ± 9°F (22.8°C ±
             5.0°C). An erratic reading represents a failure.
     (3)     Connect an ohmmeter to connector pins 8 and 9 of the harness assembly
             (22). Ohmmeter should read open (> 1MΩ) at 73°F ± 9°F (22.8°C ± 5.0°C).
             An erratic reading represents a failure.
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4.   Disassembled Battery
     A.    Visually check each cell carefully for evidence of electrolyte leakage, cracks,
           corrosion, burns, holes, or cross threaded terminals. Excessive salt around a
           terminal post indicates leakage. Refer to Cell Hardware on page 5005 for
           replacement of lower terminal O-ring (2A) if leakage is evident.
     B.    Visually check each cell vent valve assembly (3) for defective O-rings, cracks, or
           other physical damage. Replace defective O-rings (4). Vent valves that visually
           appear damaged should be tested in accordance with the procedures in Testing and
           Fault Isolation and/or discarded if necessary.
     C.    Inspect intercell terminal links (11 through 15) for bends, tarnish, loss of nickel
           plating, corrosion or burns. Tarnish can be polished off with a fine wire brush.
           Replace any defective intercell links.
     D.    Liners (27) should be clean and free of cracks or holes. Replace any that are
           defective.
             CAUTION:       A DEFECTIVE BATTERY CONNECTOR RECEPTACLE CAN
                            CAUSE BATTERY DISCHARGE, AS WELL AS IN SERVICE LOW
                            VOLTAGE.
     E.    Check the battery connector receptacle (16) for evidence of arcing, corrosion,
           cracks or cross threaded terminals. Using the same methods described in the cell to
           case testing, test the battery connector receptacle by measuring the resistance
           between the positive pin and the connector shell, and the negative pin and the
           connector shell. Replace with factory new if found to be defective (Disassembly,
           Assembly).
     F.    Visually check the harness assembly (22) as follows:
           (1)    Inspect electrical connector for bent or loose pins, corrosion, cracks, faulty
                  wire connections and evidence of arcing. Any evidence of the above
                  conditions however minor, is cause for replacement. Discard the damaged
                  unit and replace with factory new.
           (2)    Inspect charge control thermistor and thermostat for damaged, loose or
                  broken wire connections, cracks, dents, or other physical defects. Any
                  evidence of the above conditions however minor, is cause for replacement.
                  Discard the damaged unit and replace with factory new.
           (3)    Visually check all wiring for damage to insulation, cracked or broken wire and
                  other physical defects. Any evidence of the above conditions however
                  minor, is cause for replacement. Discard the damaged unit and replace with
                  factory new.
                  NOTE:      The harness assembly (22) is a non-repairable item and should be
                             discarded if defective.
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G.   Cell Hardware.
     Check all hardware items for damage
     (1)      Replacement of cell hardware is limited to 5A, 5B, 6, 6A, 6B, 6C, 6D , and
              the lower terminal O-ring (2A) requires replacement, the cell assembly (2) is
              limited to replacement of defective hardware. Defect of the cell itself
              requires cell replacement. To replace a defective terminal O-ring:
              (a)     Remove lower terminal nut (5B), the polarity washer (6B or 6C), the
                      Belleville washers (6A) and terminal O-ring (2A) being careful to
                      prevent anything from falling into the cell opening.
              (b)     Replace O-ring (2A), install washer (6D), the 2 Belleville washers
                      (6A), the polarity washer (6B or 6C) and torque lower terminal nut
                      (5B) per Table 8001.
H.   Check battery cover (8) and battery case (7) for damage.
           When necessary, remove minor dents in the battery cover (8) and battery case
           (7) using a hard rubber mallet. Polish out minor pits or scratches using a fine
           grain abrasive porous cloth.
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ASSEMBLY
1.   General
     This section contains assembly instructions necessary after disassembly.
     A.     Insert one edge of bottom liner (B) (Figure 7001) into battery case from either the
            left or right side, then slide the liner under the cell partition.
     B.     Install harness assembly (22) (Figure 10001) as follows:
            (1)     Insert the harness assembly connector into its mounting hole in the case (7)
                    Figure 10001 and install the mounting screws (24) Figure 10001 and nuts
                    (25) Figure 10001 and torque per Table 8001.
            (2)     Insert the liner assembly liner (A) (Figure 7001) on the inside face of the
                    center partition, take care to align the holes in the liner with the hole in the
                    partition.
            (3)     Insert the thermoswitch plate (23) Figure 10001 in back of liner assembly (A)
                    (Figure 7001) so that the liner assembly is between the thermoswitch plate
                    (23) Figure 10001 and the liner assembly (A) against the partition.
            (4)     Pass the thermoswitch end of the harness assembly (22) Figure 10001
                    through the hole in the partition, liner assembly (A) (Figure 7001).
            (5)     Attach the thermoswitch to the thermoswitch plate (23) Figure 10001 with
                    mounting nuts (25) Figure 10001 and torque per Table 8001.
     C.     Install the center row liners and cell subassemblies as follows:
            (1)     Install liners (D) (Figure 7001) on inside of cell partition.
            (2)     Install five cell subassemblies (2) Figure 10001 into positions 4, 5, 6, 9 and
                    10 in the center partition of battery case (7) Figure 10001. Be sure to
                    maintain the proper cell arrangement and polarity orientation per Figure
                    7002. Install the charge control thermistor plate between cells 6 and 9 as
                    shown in Figure 10001.
            (3)     Install liners (F and H) Figure 7001 into the center partition of battery case.
            (4)     Install a cell assembly (2) Figure 10001 into position 13 in the center partition
                    of the battery case (7) Figure 10001. Insertion of the last cell is sometimes
                    difficult and may be assisted by pushing down on the terminals with a small
                    block of softwood.
            NOTE:      Liners (C) (Figure 7001) are used as required to ensure the center row
                       cells are retained securely in place. As indicated in Figure 7001, the
                       maximum quantity to be used is as shown to prevent free movement of
                       the cells.
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D.   Install the left and right side row of cells and liners as follows:
     (1)     Install liners (E, F, G, and H) (Figure 7001) into the battery case (7) Figure
             10001 as shown in Figure 7001.
     (2)     Install six cell assemblies (2) Figure 10001 in the left and right hand side of
             the battery case (7) Figure 10001. Be sure to maintain the proper cell
             arrangement and polarity orientation per Figure 7002.
     (3)     Install the left and right end liners (H) (Figure 7001) into the battery case (7)
             Figure 10001) at each end as shown in Figure 7001.
     (4)     Install the remaining two cell assemblies (2) Figure 10001) into the battery
             case (7) Figure 10001. Be sure to maintain the proper cell arrangement and
             polarity orientation per Figure 7002. Insertion of the last cell on each side is
             sometimes difficult and can be assisted by pushing down on the terminals
             with a small block of softwood.
             NOTE:      Liners (C) (Figure 7001) are used as required to ensure the left
                        and right hand row of cells are retained securely in place. The
                        maximum quantity to be used is shown in Figure 7001 to prevent
                        free movement of the cells.
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                                                    Max. Unit
Item      Description        Dimension [in]
                                                  Per Assembly
 A     LINER ASSEMBLY         9.86 x 2.95               1
 B     LINER              9.52 x 10.72 x 0.032         1
 C     LINER             2.953 x 10.373 x 0.062       13
 D     LINER             9.108 x 9.861 x 0.032         2
 E     LINER            10.629 x 10.373 x 0.032        2
 F     LINER             2.953 x 10.373 x 0.032        6
 G     LINER             10.629 x 9.861 x 0.020        2
 H     LINER             2.953 x 10.373 x 0.020        3
                        Battery Liner Kit (27)
                            Figure 7001
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     A.     Assemble connector gasket (17) Figure 10001 to the adapter connector (16) Figure
            10001.
     B.     Insert terminals of the adapter connector (16) Figure 10001 through the oval
            mounting hole in the front of the battery case (7) Figure 10001.
     C.     Attach the adapter connector (16) Figure 10001 to the battery case (7) Figure
            10001) with Sems screws (18) Figure 10001. Secure the receptacle by tightening
            the screws (18) Figure 10001 per Table 8001.
4.   Hardware
     A.     Recheck all cell polarities.
     B.     Mount the intercell connector links (11 through 15) Figure 10001.
            (1)    Replace any intercell connector links that are bent, burnt, or have defective
                   nickel plating.
            (2)    Using a small brush, lightly coat cell terminals and intercell links with neutral,
                   nonacid, petroleum jelly.
                   NOTE:      Excessive use of petroleum jelly on the terminals and connector
                              links will contribute to current leakage in high ambient temperature
                              operations.
            (3)    Mount the washers (6), washers (21), connector nuts (20), and upper
                   terminal nuts (5A) Figure 10001.
                   NOTE:      Cell terminals should be lightly greased prior to installation of nuts
                              (5A). Torque upper nuts per Table 8001.
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1.        Torque Table
          Table 8001 is a listing of all pertinent torque values needed to assemble and service the
          battery.
          NOTE:          The values listed in Table 8001 are “lube torque” values. The threads should
                         be lightly greased prior to installation and applying torque.
 Figure                       Item   Torque Value                            Name, Location
                              Number
 Figure 10001 (#4 of 4)         5A      116 ± 6 lbs.-in (13.1 ± 0.7 Nm)      Nut, Terminal, Upper
     Figure 10001 (#4 of 4      5B      48.7 ± 4 lbs.-in (5.5 ± 0.5 Nm)      Nut, Terminal, Lower
 Figure 10001 (#1 of 4)         18      20 ± 4 lbs.-in (2.30 ± 0.5 Nm)       Screws, Receptacle
                                        116 ± 6 lbs.-in (13.1 ± 0.7 Nm)      Nut, Terminal Adapter
 Figure 10001 (#1 of 4)         20
                                        5.0 ± 0.5 lbs.-in (0.56 ± 0.06 Nm)   Screw, Conn; Nut, Conn
 Figure 10001 (#3 of 4)       24, 25
                                             Torque Table
                                              Table 8001
2.        Fits and Clearances Table
          No fits and clearances required.
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1.   Special Tools
     NOTE:           Equivalent tools can be used.
     The kit (P/N 416161) is available from Saft containing special tools T01, T02, T03, and T04.
     The tools are housed in a polypropylene box and each tool is insulated to ensure optimum
     safety for the technician.
     The syringe (T02) is used in the electrolyte level adjustment and the cell puller tool (T04) is
     used in cell removal Table 9001.
                                                                              V09052         F6177
           Item DESCRIPTION
                                                                               P/N             P/N
            T01 Universal vent wrench                                       093365-000       413876
            T02 Syringe assembly (with nozzle 20 mm (0.79 in))              020915-004       416231
            T03 1 Ω 3 W equalizing resistors                                      -          164829
            T04 Universal cell extraction tool or M10x1.25 tool             017556-000       416159
            T05 Vent valve adapter for M8 valve                             025098-000           -
                                    Special Tools
                                     Table 9001
2.   Standard Tools
     A.      The following items are recommended to do the procedures described in this
             manual. When necessary equivalent substitutes may be used.
              -    Constant current charger (DC current range 0 – 60A, minimum open DC
                   voltage 40V)
              -    Constant current load bank (DC current range 0 – 60 A, DC voltage range 1 –
                   40V)
              -    Megohmmeter (0 – 50 MΩ @ 250 V continuous)
              -    Precision Multimeter (Volt, Ω, mA) 2000 counts 1% or better
              -    Torque Wrench (Fully insulated) 0 – 15 N.m (0 – 133 lbf.in)
              -    Thermometer, Immersion
              -    Standard mechanic’s tools.
              -    Safety gloves.
              -    Protective goggles.
              -    Safety shoes.
              -    Eye wash.
              -    Protective apron.
              -    Stiff bristle brush (non-metallic)
              -    Small paintbrush (non-metallic)
              -    Dry, compressed air source [less than 1.4 bar (20 psi)]
              -    Soft, clean cloth (at least two required)
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1.   Introduction
     A.     Purpose
            (1)     This section provides illustrations and parts breakdown of the 4579 battery,
                    which can be disassembled, replaced, and reassembled.
     B.     Explanation and Usage of Section
            (1)     Assembly Order Indenture System
                    The Indenture System used in the parts list shows the relationship of one
                    part to another. For a given item, the number of indentures depicts the
                    relationship of the item to the associated next higher assembly.
            (2)     Effectivity Code
                    Reference letters (A, B, C, etc.) are assigned in the EFF CODE column to
                    each top assembly. The reference letter of the applicable top assembly is
                    also shown in the EFF CODE column for each detail part and subassembly
                    except that no reference letter is shown for detail parts and subassemblies
                    used on all top assemblies.
            (3)     Quantity Per Assembly
                    The UNITS PER ASSY column shows the total number of units required per
                    assembly, per subassembly, and per sub-subassembly as applicable. The
                    letters REF indicates the item is listed for reference purposes.
            (4)     Parts Replacement Data
                    Interchangeability information will be provided in a future manual revision if it
                    becomes applicable.
            (5)     Service Bulletin Incorporation
                    Service Bulletin incorporation information applicable to the parts list will be
                    provided in a future manual revision if it becomes applicable.
            (6)     Items Not Illustrated
                    Items not illustrated are indicated by a dash ( - ) ahead of the item numbers
                    in the FIGURE and ITEM NO. column.
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http://www.saftbatteries.com
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1.   Storage
     A.     General
            Storage preparation and packaging makes sure the equipment is protected against
            any attack by atmospheric agents. For a battery which has been cleaned and
            serviced and is not directly put into service on board an aircraft, different methods
            can be recommended depending on the purpose and the environment conditions of
            the "storage".
     B.     Storage room
            Keep the batteries and spares in a dry and clean room.
     C.     Temperature conditions
            The recommended temperature range is + 20°C ± 15°C (68°F ± 27°F). However,
            occasional excursion into the range of -55°C to +60°C (-67°F to +140°F) is
            permitted.
2.   Inactive long-term storage
     NOTE: There is no need of maintenance operation during the storage period.
     The battery should be stored filled and discharged. It is not necessary that it be short
     circuited. No revalidation is required during storage.
     The storage life is 10 years, if using the following conditions:
     - sealed packaging,
     - temperature: +41°F to +95°F (5°C to 35°C),
     - humidity < 90 %,
     - normal vertical position,
     - Isolated from detrimental agents: i.e. dirt, dust, dampness, vibration, corrosive
        atmosphere.
     Saft Ni-Cd batteries may be stored in temperatures ranging from -67°F to +41°F or +95°F
     to 140°F (-55°C to +5°C or +35°C to +60°C) for an accumulated exposure that does not
     exceed 30 days.
     Lead batteries must not be stored in the same room.
     The standard cardboard packaging is considered unsealed and allows 2 years of storage
     under the above conditions.
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3.   Inactive stand-by storage
      A.    Definition
            The battery is charged after being serviced then stored fully charged in a dedicated
            room in such a way that it can be installed in the aircraft without further check. The
            battery may be kept in stand-by for the period corresponding to 80% available
            capacity on Figure 15001 (for example 24 days at 30°C) with a maximum of 90
            days.
                                       Charge Retention
                                        Figure 15001
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        (2)     The battery can be “Topped or Refreshed” up to two (2) times (for example
                24 days at +30°C can be prolonged to 72 days at +30°C).
                CAUTION: The time necessary to reach the required voltage should be
                              very short. Do not do the 4-hour overcharge at 0.1C1A during
                              this charge operation.
        (3)     Action at the End of the Standby Period
                (a)     At the end of the stand-by period, if the battery is not immediately
                        installed in the aircraft, do one of the following procedures:
                (b)     If the battery has been subject to one period, or two successive
                        periods of stand-by, it must be Discharged and Charged after which it
                        can be subject to another period of up to 3 months stand-by. If it is to
                        be put into long term storage to para. Inactive Long-term Storage
                (c)     If the battery has been subject to three successive periods of stand-
                        by, it must be Discharged, Residual Discharge and Charged after
                        which it can be subject to another sequence of three stand-by periods
                        of up to 3 months it is to be put into long term storage refer to para.
                        Inactive Long-term Storage.
     CAUTION:         IF THE ABOVE CONDITIONS ARE NOT MET, THERE IS A RISK OF
                      PLACING A BATTERY ON BOARD THE AIRCRAFT THAT DOES NOT
                      MEET THE EMERGENCY REQUIREMENTS. IF THE BATTERY HAS
                      PREVIOUSLY BEEN STORED AT A TEMPERATURE BELOW THAT
                      OF THE AMBIENT, CONDENSATION MAY OCCUR. BEFORE
                      INSTALLING, VERIFY THE INSULATION RESISTANCE.
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4.   Active standby mode (trickle charge)
     CAUTION:            WATER CONSUMPTION OCCURS WHEN THE BATTERY IS
                         CONTINUOUSLY CHARGED, IN AN OVERCHARGE CONDITION.
                         SAFT DOES NOT RECOMMEND THIS METHOD, HOWEVER SOME
                         OPERATORS TAKE RESPONSIBILITY FOR ITS USE.
     NOTE: This method is not reliable due to quantity and inaccuracy of water consumption.
     Principle: the battery is continuously charged, in an overcharge condition. Saft does not
     recommend this method, however some operators take responsibility for its use.
     This method is not reliable due to quantity and inaccuracy of water consumption.
     Example: A 40 Ah battery on a continuous trickle charge of 150 mA for one month will
     consume over 36 cm3/cell of water. The reserve available per cell is provided in Table 1.
     The operator must adjust the electrolyte level before placing the battery onboard the
     aircraft. Otherwise the risk of a battery incident exists (cells dried out before the normal end
     of the interval maintenance). This creates the conditions for a thermal runaway with all its
     consequences (unscheduled removal with the possibility of the total loss of the battery and
     a delayed if not cancelled flight).
5.   Spares
     A.       Spare Cells
              Spare cells must be stored filled and discharged (in a discharged cell, the electrolyte
              level is not visible). It is not necessary that they be short circuited. The vent valves
              must not be removed. The storage conditions are the same as those given in para.
              Inactive long term storage. No maintenance operation is needed during storage.
              Before installation in a battery, cells must be visually inspected for damage or
              leakage and cleaned and repaired as necessary in accordance with the battery
              maintenance documentation.
     B.       Spare O-rings, gaskets and vent valves
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7.   Transportation procedure
     The battery is normally discharged before packing. If it is necessary to transport a charged
     battery, make sure that the output terminals are protected against short circuit.
     The battery should then be packed vertically in its original container. If the original container
     is not available, the international and/or local packaging regulations applicable to the mode
     of transport and destination must be followed.
     According to the IATA / IMDG dangerous goods regulations, Saft ships all existing nickel-
     cadmium batteries or cells for aircraft under the classification UN2795 (wet, filled with alkali)
     according to packing instruction 800.
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