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Discard Any Previous Revision of The CMM and Use The Current Revision Dated Apr 23/19

This document provides a revision to the Component Maintenance Manual (CMM) for Saft nickel cadmium aircraft batteries models 539CH-1 and 5319CH1. The revision, dated April 23, 2019, reformats and updates the CMM. Technicians are instructed to discard previous CMM revisions and use the current April 23, 2019 version, which is available for download on Saft's website. The revision updates all pages of the CMM.

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0% found this document useful (0 votes)
2K views69 pages

Discard Any Previous Revision of The CMM and Use The Current Revision Dated Apr 23/19

This document provides a revision to the Component Maintenance Manual (CMM) for Saft nickel cadmium aircraft batteries models 539CH-1 and 5319CH1. The revision, dated April 23, 2019, reformats and updates the CMM. Technicians are instructed to discard previous CMM revisions and use the current April 23, 2019 version, which is available for download on Saft's website. The revision updates all pages of the CMM.

Uploaded by

nixon_b_2000
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 69

To: Holders of 539CH-1 (Saft 024147-000) and 5319CH1 (Saft 025920-000) batteries

Subject: CMM Revision No. 12 Dated Apr 23/19

HIGHLIGHTS
Discard any previous revision of the CMM and use the current revision dated Apr 23/19.
NOTE: The CMM can be downloaded from the internet at www.saftbatteries.com

Chapter/Section and
Page Number Description of Change Effectivity
All Pages Reformatting and general updates All Models

24-31-07
Highlights Page 1 of 1
Apr 23/19
ECCN: EAR99
Cage Code 09052
711 GIL HARBIN INDUSTRIAL BOULEVARD
VALDOSTA, GEORGIA 31601
Phone: 1 (229) 247-2331 Fax: 1 (229) 247-8486

Nickel Cadmium Aircraft Battery

SAFT Type No. 539CH-1


SAFT Part No. 024147-000
ELDEC Part No. BA35-01
BOEING Part No. S282T003-1

SAFT Type No. 5319CH1


SAFT Part No. 025920-000
ELDEC Part No. BA35-02
BOEING Part No. S282T003-4

Website: www.saftbatteries.com

COMPONENT MAINTENANCE MANUAL

WITH
ILLUSTRATED PARTS LIST

24-31-07
Page T-1 / T-2 Blank
REV 12 Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

RECORD OF REVISIONS

REV ISSUE INSERT BY REV ISSUE INSERT BY


NO. DATE DATE NO. DATE DATE
1 07/13/01 07/13/01 Saft
2 02/28/05 02/28/05 Saft
3 05/01/06 05/01/06 Saft
4 07/28/10 07/28/10 Saft
5 04/05/16 04/05/16 Saft
6 04/18/16 04/18/16 Saft
7 05/03/16 05/03/16 Saft
8 06/30/16 06/30/16 Saft
9 04/19/17 04/19/17 Saft
10 12/18/17 12/18/17 Saft
11 4/11/18 4/11/18 Saft
12 Apr 23/19 Apr 23/19 Saft

24-31-07
ROR Page 1 / ROR Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

RECORD OF TEMPORARY REVISIONS

TEMPORARY PAGE ISSUE DATE BY DATE BY


REV NO NUMBER

24-31-07
RTR Page 1 / RTR Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

SERVICE BULLETIN LIST


SERVICE BULLETIN REVISION NUMBER DATE BULLETIN
NUMBER INCORPORATED INTO
MANUAL

PRODUCT IMPROVEMENTS

Product Improvements have been incorporated using service bulletins entered in the service
bulletin list. Service bulletin highlights are as follows:

24-31-07
SBL Page 1 / SBL Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

LIST OF EFFECTIVE PAGES


SUBJECT PAGE DATE SUBJECT PAGE DATE

Title Page T-1 Apr 23/19 Disassembly 3001 Apr 23/19


T-2 Blank 3002 Apr 23/19

Record of Revisions ROR-1 Apr 23/19 Cleaning 4001 Apr 23/19


ROR-2 Blank 4002 Apr 23/19

Record of Temporary RTR-1 Apr 23/19 Check 5001 Apr 23/19


Revisions RTR-2 Blank 5002 Apr 23/19
5003 Apr 23/19
Service Bulletin List SBL-1 Apr 23/19 5004 Apr 23/19
SBL-2 Blank
Assembly 7001 Apr 23/19
List of Effective Pages LEP-1 Apr 23/19 7002 Apr 23/19
LEP-2 Blank 7003 Apr 23/19
7004 Apr 23/19
Table of Contents TOC-1 Apr 23/19
TOC-2 Blank Fits and Clearances 8001 Apr 23/19
8002 Blank
List of Illustrations LOI-1 Apr 23/19
LOI-2 Blank Special Tools, 9001 Apr 23/19
Fixtures, Equipment, 9002 Apr 23/19
List of Tables LOT-1 Apr 23/19 and Consumables
LOT-2 Blank
Illustrated Parts List 10001 Apr 23/19
Introduction INTRO-1 Apr 23/19 10002 Apr 23/19
INTRO-2 Apr 23/19 10003 Apr 23/19
10004 Apr 23/19
Description and 1 Apr 23/19 10005 Apr 23/19
Operation 2 Apr 23/19 10006 Apr 23/19
10007 Apr 23/19
Testing and Fault 1001 Apr 23/19 10008 Apr 23/19
Isolation 1002 Apr 23/19
1003 Apr 23/19 Storage (Including 15001 Apr 23/19
1004 Apr 23/19 Transportation) 15002 Apr 23/19
1005 Apr 23/19 15003 Apr 23/19
1006 Apr 23/19 15004 Apr 23/19
1007 Apr 23/19
1008 Apr 23/19
1009 Apr 23/19
1010 Apr 23/19
1011 Apr 23/19
1012 Apr 23/19
1013 Apr 23/19
1014 Apr 23/19
1015 Apr 23/19
1016 Apr 23/19
1017 Apr 23/19
1018 Blank

24-31-07
LEP Page 1 / LEP Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

TABLE OF CONTENTS
PARAGRAPH TITLE PAGE

Description and Operation 1

Testing and Fault Isolation 1001

Automatic Test Requirements (ATLAS) N/A

Disassembly 3001

Cleaning 4001

Check 5001

Repair N/A

Assembly 7001

Fits and Clearances 8001

Special Tools, Fixtures, Equipment, and Consumables 9001

Illustrated Parts List 10001

Storage (Including Transportation) 15001

24-31-07
TOC Page 1 / TOC Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

LIST OF ILLUSTRATIONS

Figure Description Page

Intro 1 Universal Recycling Symbols Intro 4

1 Nickel Cadmium Battery 1

1001 Process Flow for Battery Restoration Procedures 1002

1002 Position of Syringe in Cell Vent Seal 1008

7001 Cell and Spacer Installation 7002

7002 Cell Number and Polarity Orientation 7003

10001 Battery, Exploded View (Sheet 1 of 4) 10004

10001 Battery, Exploded View (Sheet 2 of 4) 10005

10001 Battery, Exploded View (Sheet 3 of 4) 10006

10001 Battery, Exploded View (Sheet 4 of 4) 10007

15001 Charge Retention Aircraft Ni-Cd battery 15002

24-31-07
LOI Page 1 / LOI Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

LIST OF TABLES

Table Description Page

1 Leading Particulars 2

1001 Initial Discharge / Capacity Check 1003

1002 Charge Table 1006

1003 Overcharge Voltage Limit 1006

1004 Capacity Check (Second Discharge) 1008

1005 Fault Isolation Chart (Sheet 1 of 5) 1013

1005 Fault Isolation Chart (Sheet 2 of 5) 1014

1005 Fault Isolation Chart (Sheet 3 of 5) 1015

1005 Fault Isolation Chart (Sheet 4 of 5) 1016

1005 Fault Isolation Chart (Sheet 5 of 5) 1017

8001 Torque Values 8001

9001 Special Tools 9001

9002 Consumables 9002

15001 Topping or Refresh Charge 15003

15002 Return to Service Following Storage 15004

24-31-07
LOT Page 1 / LOT Page 2 Blank
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

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 and replacement 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.
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.

24-31-07
Intro 1
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

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.

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:

Saft America, Inc.(V09052) Saft (F6177)


711 Gil Harbin Industrial Boulevard 26 quai Charles Pasqua
Valdosta, Georgia 31601 92300 Levallois-Perrot, France

Telephone: (229) 247-2331 Telephone: +33 1 58 63 16 00


FAX: (229) 247-8486 FAX: +33 1 58 63 16 18

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 (350)
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.

24-31-07
Intro 2
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
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. 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 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.

24-31-05
Intro 3
Sep 6/18
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
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.

Universal Recycling Symbols


Figure Intro 1
You can find the nearest recycling collection point on our website at
www.saftbatteries.com.

Verification:

Testing / Fault Isolation 6/30/97


Disassembly 6/30/97
Assembly 6/30/97

24-31-07
Intro 4
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

DESCRIPTION AND OPERATION

1. Description
The Nickel Cadmium Battery provides power either to the standby system or to start the
auxiliary power unit. It is a nickel-cadmium type with sintered and plastic bonded
electrode 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 thermostat mounted on a plate against the face of the end cell 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

24-31-07
1
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
Voltage:
Nominal 24.0 Volts
Open Circuit Voltage (Fully 26.0 Volts
charged)
Weight 43.54 kg (96 pounds) maximum
Dimensions (Maximum):
Height 289.56 mm (11.4 inches)
Length (including side brackets) 330.20 mm (13.0 inches)
Width (including handles) 279.40 mm (11.0 inches)
Cell Assembly Terminal M10 X 1.25, externally threaded
Number of Cell Assemblies 20
Cell Model Saft-Type CVH531KA
Rated Capacity (C 1 ) 53 Ampere-hours at 1-hour rate
End of Life Capacity 48 Ampere-hours at 1-hour rate (53 amps)
Maximum Consumable Water Reserve 88 cm3
Venting Pressure 0.14 to 0.7 bar (2 to 10 psi)
Cell Assembly Case Material Polyamide
Battery Case Material Stainless Steel
Electrolyte Potassium Hydroxide
Leading Particulars
Table 1

24-31-07
2
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

TESTING AND FAULT ISOLATION

1. General
This section contains battery functional tests and fault isolation information. Test
procedures are written in step-by-step formats that follow the process flow outlined in
Figure 1001. Fault isolation, functional checks, and restoration information is presented
in chart form (refer to Table 1005).
NOTE: The ( ) part identification numbers herein are IPL numbers and are shown in
the Battery, Exploded View Figure 10001.
NOTE: All voltage readings are DC unless specifically otherwise stated.

2. Required Test Equipment (Ref. Fig. 9001)


NOTE: Test equipment having equivalent specifications can be used.
Refer to Special Tools, Fixtures, Equipment, and Consumables for listing of Standard
Tools.

24-31-07
1001
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
RECEIVED

Visual Inspection
[CHECK 2. A]
C B

FAIL
Insulation Check
< 1.55V Cell Voltage
[CHECK 2. B.]
[TESTING 3.
G. (4]
PASS
> 1.55V

Light Clean
Assembled Battery
[CLEANING 2.]
FAIL Special Testing <100% Capacity Test
[TESTING 3. J.] [TESTING 3. I.]

Check Cell Nut PASS > 100%


Torque
[CHECK 2. C.]

Charge
[TESTING 3. G.]

Total Voltage at Main


<21V
Connector
[CHECK 2. D.] A
Adjust Electrolyte
> 21V [TESTING 3. H.]

PASS Harness Assembly PASS Polarization Test FAIL


[CHECK 2. E.] [TESTING 3. C.]

FAIL < 1.55V Cell Voltage


[TESTING 3.
DISASSEMBLY G. (4]
[Page 3001]
> 1.55V
Initial and Residual C
Discharge PASS
[TESTING 3. D. and A
3. E.]
Harness Assembly
FAIL FAIL Insulation Check
[TESTING 3. K.]
[CHECK 2. B.]

Clean and Test


Vent Valves PASS
[TESTING 3. F.]
Clean Disassembled
Battery
[CLEANING 3.]
Check Cell Nut
Torque
Charge [CHECK 2. C.]
[TESTING 3. G.]
ASSEMBLY
[Page 7001]

Return To Service

Adjust Electrolyte Process Flow for Battery Restoration Procedures


B
[TESTING 3. H.] Figure 1001

24-31-07
1002
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

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 25.0 +
10°C (77 + 18°F), unless otherwise noted in this manual.
B. Test Equipment
Refer to Special Tools, Fixtures, and Equipment, and Consumables for test
equipment recommendations.
C. Polarization Test
(1) Charge the battery at 0.1C 1 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 1012 with requires
disassembly to replace marked cells.
(b) If all cells are above zero (0)V, continue with maintenance as
specified.
D. Initial Discharge
The purpose of this procedure is to discharge the battery to a known state of charge
and determine the battery capacity from the aircraft.
(1) Discharge the battery at the current rate shown in Table 1001 until the
battery reaches 20.0V.
DISCHARGE RATE MINIMUM TIME FOR DISCHARGE TO 20.0V
(AMPS)
53.0 60.0 MINUTES
Initial Discharge / Capacity Check
Table 1001

24-31-07
1003
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
NOTE: It is important that the discharge current be continually maintained
at the selected value, and that the time of discharge be measured
accurately.
(2) Monitor individual cell voltages periodically during the discharge and record
the time at which the first cell reaches 1.0V. Stop the discharge when the
battery terminal voltage reaches 20.0V and record the time.
NOTE: If a cell goes to zero volts or reverses polarity during the discharge,
short out the cell's terminals for the remainder of the discharge.
(3) If the discharge time of the first cell reaching 1.0V equals or exceeds the
value shown in Table 1001, then the battery capacity is a “PASS”. Continue
with Residual Discharge and return to Figure 1001.
(4) If the discharge time of the first cell reaching 1.0V is less than the value
shown in Table 1001, then the battery capacity is a “FAIL”. Continue with
Residual Discharge and return to Figure 1001.
E. Residual Discharge
Discharge each cell in the battery to zero volts using one of the following
procedures, Method A or Method B:
NOTE: It is not necessary to have a rest period between discharge and residual
discharge.
(1) Method A
(a) Continue to discharge the battery at C 1 rate as each cell reaches 1.0V,
connect a 1.0Ω (3.0W minimum) resistor (T03) across its terminals.
Leave the resistor in place until the cells reach 0.5V.
NOTE: Attach the resistors with alligator clips to make a firm connection.
(b) As each cell reaches 0.5V, insert a shorting clip between its terminals.
Leave these clips on for 12 to 16 hours to allow the cells to completely
discharge and the battery to cool.
(2) Method B
(a) Continue to discharge the battery at C 1 rate as each cell reaches 1.0V,
connect a 1.0Ω (3.0W minimum) resistor (T03) across its terminals.
Leave the resistors (T03) in place for 12 to 16 hours to completely
discharge the cells.
(3) At completion of Method A or B remove the shorting devices
(4) If no cell(s) are marked for replacement, then return to Figure 1001.
(5) If cell(s) were marked for replacement, then return to Cell Replacement.

24-31-07
1004
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

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 fixture Saft P/N 024398-000 (T05).
(2) Affix the vent valve (350) that contains O-ring (360) shown in IPL Section
Figure 10001 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 1.4 bar (20 psi).
(4) Immerse the valve and end of fixture in water, and slowly raise the pressure.
Make sure the valve opens between 0.14 to 0.7 bar (2 psi and 10 psi).
(5) Reuse only those vent valves found to open in the 0.14 to 0.7 bar (2 psi and
10 psi) range. Re-soak vent valves that do not open at 0.7 bar (10 psi) until
they do open (refer to CLEANING on page 4001 ). Discard vent relief valves
which are not gas tight at low pressure.
G. Charge
CAUTION: ATTEMPTING TO CHARGE BATTERIES WITH LOW
ELECTROLYTE LEVELS IN ANY CELL MAY CAUSE CELL DAMAGE.
(1) Allow the battery to cool to 22.8°C ± 5.0°C (73°F ± 9°F).
(2) Prior to charging the battery, remove the cover and loosen (do not remove)
all vent valves. Ensure that the shorting spring has been removed.
(3) Charge the battery using one of the three methods in Table 1002 and during
the last 30 minutes of the overcharge cycle, adjust the Electrolyte Level.
NOTE: Check individual cell voltages at the beginning of the charge. If any cell
indicates an immediate voltage rise above 1.55V, add about 10 cm3 of
distilled or demineralized water through the vent valve opening of that cell.
NOTE: C 1 A designates the rated one–hour capacity.

24-31-07
1005
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

Constant Current Main Charge Overcharge


Method 1: 0.1 C 1 A until battery Overcharge at 0.1C 1 A for 4 hours
reaches 1.50 V/Cell after main charge.
Time:
Minimum:10 hours / *Maximum: Total charge not to exceed 16
12 hours hours
*New batteries may take 2.5 hours longer to reach the specific voltage
OR OR
Method 2: 0.5C 1 A until battery Overcharge at 0.1C 1 A for 4 hours
reaches 1.55 V/Cell after main charge.
Time:
Minimum: 2 hours Total charge not to exceed
*Maximum: 2 hours 30 minutes 6 hours 30 minutes
*New batteries may take 30 minutes to reach the specific voltage
OR OR
Method 3: 1.0C 1 A until battery Overcharge at 0.1C 1 A for 4 hours
reaches 1.57 V/Cell after main charge.
Time:
Minimum: 1 hour Total charge not to exceed
*Maximum: 1 hour 15 minutes 5 hours 15 minutes
*New batteries may take 15 minutes to reach the specific voltage
Charge Table
Table 1002

(4) During the last 30 minutes of overcharge check that the cell voltages are
within the value shown in Table 1003 (mark the cell(s) that do not comply).
See Cell Replacement on page 1012 to replace marked cell(s).

CELL VOLTAGE
Last 30 minutes at 0.1C 1 A
> 1.55V
Overcharge Voltage Limit
Table 1003

24-31-07
1006
Apr 23/19
COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

H. Electrolyte Level Adjustment


This procedure is to be carried out during overcharge at 0.1C 1 amps during the last
30 minutes of charge cycle.

WARNING: USE CARE NOT TO TILT CELLS WHILE VENT VALVES ARE
LOOSENED OR REMOVED; CONTACT OF ELECTROLYTE WITH
SKIN CAN CAUSE SEVERE BURNS.

CAUTION: BATTERY MUST BE FULLY CHARGED BEFORE ADJUSTING


ELECTROLYTE LEVEL.
NOTE: The electrolyte level should be adjusted during the last 30 minutes of the
overcharge cycle.
(1) To perform the following procedure, a syringe assembly (T02) is required. It
is included in the battery maintenance kit (P/N 416161) (refer to SPECIAL
TOOLS, FIXTURES, EQUIPMENT, AND CONSUMABLES).
(2) Before adjusting the electrolyte level, remove the vent valves shown in IPL
Section Figure 10001 (350) with the special, plastic vent valve wrench (T01)
from the maintenance kit. Immerse the valves and their O-rings in distilled or
de-ionized water and let them soak to dissolve any salts. Cover the cells with
a clean damp cloth to prevent entry of foreign matter.
(3) Check the liquid level in the cell by inserting the syringe (T02) into the cell
opening until the shoulder of the nozzle rests on the valve seat (See Figure
1002). Withdraw the plunger and check for any liquid in the syringe. 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. Any excess liquid in the
cell will be drawn into the syringe until the electrolyte is level with the end of
the nozzle. This is the correct level for the electrolyte.
(4) If the electrolyte is low, use the following procedure to fill the cell to the
correct level:
NOTE: Use only distilled or demineralized water (M01). The quantity (in
cm3) of distilled water required to fill the cell to the correct level will
serve as an approximate guide to the amount required for the
remaining cells. The water in each cell must be adjusted
individually to the correct level. If the quantity of water added per
cell exceeds 88 cm3, then check the charging system. If the
charger is functioning properly, shorten the period between
servicing.
(a) Draw a measured amount of the distilled water (M01), such as 5 cm3
into the syringe and inject it into the cell.
(b) With the syringe nozzle resting on the valve seat, slowly withdraw the
plunger in the syringe.
(c) If the syringe remains empty, repeat steps (a) and (b), counting the
number of 5 cm3 injections required to achieve the correct level.

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(d) At the point in step (b) when some excess liquid is drawn into the
syringe, the correct level for that cell has been reached. Expel the
excess liquid into a separate container for later disposal.
(e) Record the amount of water added/removed from each cell in the
battery logbook or battery test sheet.

20mm (0.79 in)

Position of Syringe in Cell Vent Seat


Figure 1002
I. Capacity Check (Second Discharge)
The purpose of this discharge procedure is to make sure that the battery
maintenance cycle (discharge and charge procedures) correct the low capacity and /
or cell imbalance that may exist in the battery. If the battery fails the capacity test,
then Special Testing on page 1009 may be required.
(1) Prior to performing the Capacity Test, Charge and Electrolyte Leveling
should be performed.
(2) The vent valve (350) should installed on top of each cell.
(3) Discharge the battery at one of the current rates shown in Table 1004 until
the battery reaches 20.0V.
NOTE: It is important that the discharge current be continually maintained
at the selected value, and that the time of discharge is measured
accurately.
DISCHARGE RATE MINIMUM TIME FOR FIRST CELL TO
(AMPS) DISCHARGE TO 1.0V
26.5 113.2 MINUTES
53.0 56.6 MINUTES
Capacity Check (Second Discharge)
Table 1004

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(4) Monitor individual cell voltages periodically during the discharge and record
the time at which the first cell reaches 1.0V.
NOTE: If a cell goes to zero volts or reverses polarity during the discharge,
short out that cell's terminals by insert a shorting clip between its
terminals for the remainder of the discharge.
(5) If the time until the first cell reaches 1.0V equals or exceeds the values
shown in Table 1004, allow the battery to rest at least 2 hours.
J. Special Testing
These procedures are to be followed for a battery that does not meet capacity or if
the end of charge voltages are less than 1.55V during the second charge.
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
NOTE: For a new battery or one removed from aircraft, it is recommended that if
the battery requires Special Testing more than 3 times all the cells be
replaced with new Saft cells.
NOTE: For battery from long term storage, several complete charge/discharge
cycles may be required to restore performance.
(1) The vent valve (350) should installed on top of each cell, then discharge the
battery to 20.0V at the rate listed in Table 1001.
(2) Perform the Residual Discharge on page 1004.
(3) Replace all cell(s) marked for replacement per Cell Replacement on page
1012).
(4) Loosen, but do not remove, all vent valves (350) and fully charge the battery
as outlined in Charge section.
(5) Continue to charge the battery at 0.1C 1 for an additional 2 hours. During the
last 30 minutes of this 2 hour overcharge adjust the Electrolyte Level.
(6) Monitor individual cell voltages every 15-30 minutes during the additional
overcharge and record voltage readings.

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(7) Mark for replacement any cell(s) that do not comply with Table 1003. (See
Cell Replacement on page 1012).
(8) If no cell(s) requires replacement, then perform the Capacity Check.
NOTE: It is important the discharge current be continually maintained at
the selected value, and that the time of the discharge be measured
accurately.
NOTE: If a cell goes to zero volts or reverses polarity during the discharge,
short out that cell's terminals using shorting device for the
remainder of the discharge.
(9) If the time the first cell reaches 1.0V equals or exceeds the values shown in
Table 1004, then return to Figure 1001.
(10) If the time until all cells reaches 1.0V is less than the values shown in Table
1004, then repeat this procedure Special Test or refer to Fault Isolation.
NOTE: For new battery or battery removed from aircraft, it is
recommended that if the battery requires Special Testing more
than 3 times all the cells must be replaced with new Saft cells.
(11) In order to place a new battery or return a battery into service, it must be
allowed to cool to 22.8°C ± 5.0°C (73°F ± 9°F).
K. Harness Assembly
NOTE: A climate chamber or alternate methods may be used provided the
temperatures below are achieved.
(1) Over Temperature Thermostat
The over temperature thermostat shown in IPL Section Figure 10001 (200) is
part of connector harness assembly (190). It should be tested annually. It is
attached to the thermostat mounting plate (60). Disassembly is required in
order to test the thermostat (refer to DISASSEMBLY). Check the function of
the unit as follows:
(a) Connect an ohmmeter to auxiliary connector shown in IPL Section
Figure 10001 (240) pins 8 and 9 of the connector harness assembly
(190). Make sure the ohmmeter shows an open (≥ 20MΩ) at 22.8°C ±
5.0°C (73°F ± 9°F).
(b) Suspend the thermostat mounting plate shown in IPL Section Figure
10001 (60) with thermostat (200) in a beaker of water. Position the
thermostat a minimum of 50.8mm (2 inches) from the bottom and
25.4mm (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 thermostat.

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(d) Slowly raise the water temperature to 66°C (150°F) while observing
the ohmmeter. Make sure contacts remain open (≥ 20MΩ) at
temperatures below 66°C (150°F).
(e) Continue raising the water temperature and allow to stabilize at 71°C ±
5.0°C (160°F ± 9°F). Make sure the thermostat closes (< 10Ω) at a
stabilized temperature of 71°C ± 2.8°C (160°F ± 5°F).
(f) Slowly add cool water to the beaker to reduce water temperature to
65°C ± 2.8°C (149°F ± 5°F). Make sure the thermostat opens (≥
20MΩ) within 6.1°C (11°F) of the closing temperature.
(g) If the thermostat fails to meet any of the above criteria, then replace
the complete harness assembly shown in IPL Section Figure 10001
(190).
(h) Allow the harness to cool to 22.8°C ± 5.0°C (73°F ± 9°F). Test the two
resistors in the harness assembly: Using an ohmmeter, check the
resistance between the positive lug (230) and pin 1 of the connector.
Ohmmeter reading should be 29.8KΩ (±10%). Then check the
resistance between the negative lug (220) and pin 3 of the connector.
Ohmmeter reading should be 32.4KΩ (±10%).
(2) Charge Control Thermistor
The charge control thermistor is part of the connector harness assembly
shown IPL Section Figure 10001 (190). It is permanently mounted on a
sensor plate (210). Disassembly is required to test the unit (refer to
DISASSEMBLY). Check the function of the unit as follows:
(a) Connect an ohmmeter to auxiliary connector pins 11 and 12 of the
connector harness assembly shown in IPL Section Figure 10001 (190).
Make sure the ohmmeter reads 1854Ω to 3116Ω at 22.8°C ± 5.0°C
(73°F ± 9°F).
(b) Immerse the thermistor plate in a beaker containing a mixture of ice
and water.
(c) Insert a thermometer, or other suitable temperature-measuring device,
in the container, in contact with the plate.
(d) Make sure the ohmmeter indicates 7355 ± 672Ω when the plate
temperature is 0°C ±1.7°C (32°F ± 3°F).
(e) After the low temperature test, slowly raise the temperature to 71°C ±
2.8°C (160°F ± 5°F).
(f) Make sure the ohmmeter indicates 382 ± 23Ω when the plate
temperature is 71 ± 1.7°C (160 ± 3°F).
(g) If the thermistor fails any of the above testing criteria, replace the
complete connector harness assembly (190).

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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 (340), connector nuts (120) if required,
washers (330), washers (110) if required, and intercell connecting links (140
through 180) 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 (140 through 180), washers (330), washers
(110) if required, upper cell terminal nuts (340), connector nuts (120) 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 1005 as a guide in locating a cause of
malfunction and isolating the cause to a specific component.

TROUBLE PROBABLE CAUSE REMEDY


Zero battery voltage Loose main connector Tighten or replace connector

Tighten or replace links


Broken or loose terminal links
Recharge (Testing/Charge)
Battery completely discharged
Perform Battery Insulation
Check, (refer to Check/Battery
Insulation

Check connector harness


assembly (Testing/Harness
Testing)
Zero Voltage on cell Short circuited cell Replace with new cell (Cell
Replacement)
Low cell voltage at end of Separator damage Replace with new cell (Cell
charge Replacement)
Overflowing electrolyte Electrolyte level too high Clean battery, run electrical
tests, adjust level (Testing/
Capacity Test)

Tighten or replace valves,


clean, recondition, run
electrical tests, adjust
Relief valves loose or electrolyte level (Testing/
damaged Capacity Test)

Fault Isolation Chart


Table 1005 (Sheet 1 of 5)

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TROUBLE PROBABLE CAUSE REMEDY
Overflowing electrolyte Cell reversed during high rate Check aircraft charger voltage,
discharge run electrical tests
(Testing/Capacity Test)

Check aircraft charger voltage,


Overcharge at too high a rate run electrical tests
(Testing/Capacity Test)
Excessive use of water Leaky cells, defective cells or Inspect for and replace
vent valves defective cells or valves

Check aircraft charger voltage


Overcharging too long or at or ground charging system
high temperatures
Check connector harness
assembly (Testing/Harness
Testing)
Defective thermistor
Run electrical tests
(Testing/Capacity Test)
Cell imbalance
Loss of battery capacity Electrolyte level too low Run electrical tests, adjust
electrolyte level (Testing/
Capacity Test)

Run electrical tests, (Testing/


In service charging malfunction Capacity Test), check aircraft
charger

Check and / or replace


connector harness assy.
(Testing/Harness Testing)
Thermostat failure
Fault Isolation Chart
Table 1005 (Sheet 2 of 5)

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TROUBLE PROBABLE CAUSE REMEDY
Low cell capacity Normal wear from long service Replace with new cell
Abnormally high cell voltage at Dry cell Add 5 to 10 cm3 of distilled
beginning of charge water, adjust electrolyte level
at end of charge
(Testing/Electrolyte Level))

Check cell performance


(Testing/Special Testing) for
permanent damage
Low voltage output Continuous demand without Run electrical tests (Testing/
charging Capacity Test)

Run electrical tests


In service charger malfunction
(Testing/Capacity Test)

Check aircraft charger

Check connector harness


assy. (Testing/Harness
Testing)

Loose terminal connectors


Torque to spec., run electrical
tests (Testing/Capacity Test)

Main connector loose, burned, Clean or replace, tighten run


pitted electrical tests
(Testing/Capacity Test)

Fault Isolation Chart


Table 1005 (Sheet 3 of 5)

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TROUBLE PROBABLE CAUSE REMEDY
Low voltage output Defective cell or cell with Replace defective cell, run
reversed polarity electrical tests
(Testing/Capacity Test)

Discharge, disassemble,
clean, replace defective cells
Cell to Case current leakage and / or insulation, run
electrical tests
(Testing/Capacity Test)
Excess foaming on charge Electrolyte concentration low Discharge, run electrical tests
after adding water (Testing/Capacity Test)

Excessive foaming out of vent Electrolyte contaminated by oil Discharge, replace


valve on charge or grease contaminated cells, run
electrical tests
(Testing/Capacity Test)
Tarnished or burned terminal Loose terminal nuts and links Clean or replace hardware,
connectors tighten to specified torque
Corroded connectors Acid atmosphere Check room, eliminate acid
source
Inadequate greasing
Clean and lubricate properly
Mechanical damage to
Replace damaged hardware
protective nickel-plating
Exposed copper material on Mechanical damage Replace damaged hardware
connector receptacle pin Electrical arcing
Melted plastic on connectors Overheat due to contact Replace damaged hardware
resistance
Burned or pitted main battery Improperly mated or loose Clean, replace or replace parts
cables connection to mate properly
Fault Isolation Chart
Table 1005 (Sheet 4 of 5)

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TROUBLE PROBABLE CAUSE REMEDY


Deformed cell case Charger failure Discharge, disassemble install
new cell (Testing/Capacity
Test)

Check aircraft charger


Deformed cell case Damaged separator or internal Discharge disassemble, install
shorting new cell (Testing/Capacity
Test)

Make sure the operation of the


vent valve and replace if
Inoperative vent valve necessary (Testing/Vent Valve
Test)
Distorted battery case Overheating, lack of
ventilation, or major explosion
due to unusually high ambient Discharge, disassemble,
temperatures, improper replace all damaged parts with
maintenance, too high charge new parts and / or replace
rate, charger failure harness assembly or replace
entire battery; check entire
ventilation system; check
Loose terminal nuts and links
aircraft or ground charging
system
Harness Assembly failure
Resistance insulation failure Excessive spewing of Discharge, disassemble,
electrolyte, or water inside clean, replace defective
battery case insulation and / or cells, run
electrical tests
(Testing/Capacity Test)
Fault Isolation Chart
Table 1005 (Sheet 5 of 5)

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DISASSEMBLY

1. General

A. 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 effect replacement.
NOTE: The ( ) part identification numbers herein are IPL numbers and are shown in the
Battery, Exploded View Figure 10001.

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: BATTERY MUST BE COMPLETELY DISCHARGED BEFORE CELL


ASSEMBLIES CAN BE REMOVED DUE TO POSSIBILITY OF ELECTRIC
SHOCK.

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 shown in IPL Section Figure 10001 (20) by opening latches and lifting
cover from case (10 or 10A).
C. Remove the hold-down pad (30) and insulator (40).
D. Remove the cell assemblies (260) from the battery case (10 or 10A) as follows:
(1) Using the vent valve wrench (T01), loosen the vent valves shown in IPL
Section Figure 10001 (350) of all cells to relieve any pressure; then re-tighten
vent valves (use only finger pressure on wrench when installing).
(2) Remove nuts (340), (120), and washers (330) from terminals of cell
assemblies (260).
(3) Remove intercell terminal links (140) through (180) from terminals of cell
assemblies (260).
(4) Using cell puller (T04), remove cell assemblies (260) from the battery case
(10 or 10A) by tightening the cell puller (T04) to cell terminals and removing
cell with a steady straight up pull.

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E. Remove the connector harness assembly (190) as follows:


(1) Remove the thermostat mounting nuts (80) from the thermostat plate (60).
(2) Remove the harness assembly connector mounting screws (250) and lift the
harness assembly (190) out of the battery case (10 or 10A).
F. Disassembly of the cell assemblies (260) is restricted to replacing defective O-rings
(270) of the cell terminal seals. After replacing the O-rings, the lower terminal nuts
(320) must be torqued to 5 ± 0.5 Nm (44 ± 4.4 lb-in) (refer to the Table 8001) prior to
cleaning.

WARNING: USE CARE NOT TO TILT CELLS WHILE VENT VALVES ARE OR
REMOVED; CONTACT OF ELECTROLYTE WITH CAN CAUSE
SEVERE BURNS.
NOTE: Prior to any disassembly of the cells, refer to CHECK and TESTING.
(1) Using the vent valve wrench (T01), loosen and remove the vent valves (350)
from the cells.
(2) Remove O-rings (360) from the vent valves (350).
NOTE: Do not attempt further disassembly of the cell subassembly. Cells are
non-repairable items and must be replaced as a unit if defective.
G. Remove the battery connector receptacle (90) from the battery case (10 or 10A) by
removing screws (100).
H. Remove connector receptacle gasket (130) from the battery case (10 or 10A).
I. Remove all spacers (50) from the battery case (10 or 10A).

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CLEANING

1. General

A. The following items are required to perform the cleaning procedures (equivalent
substitutes can be used):
Stiff bristled brush (nonmetallic)
Dry compressed air source, less than 20 psi (1.4 bar)
Safety goggles
Lubricant, non-acid petroleum jelly (M02)
Soft, clean cloth (two required)
Isopropyl alcohol (or non-petroleum based) degreasing agent
Running water
Soap (M03)
Distilled or de-ionized water (M01)
NOTE: The ( ) part identification numbers herein are IPL numbers and are shown in
the Battery, Exploded View Figure 10001.

2. Assembled Battery

A. The following procedures are for an assembled battery with battery cover shown in
IPL Section Figure 10001 (20), hold down pad (30), and formed insulator (40)
removed.
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 CO 2 ), EXCEPT AS DIRECTED OTHERWISE HEREIN. OVER
EXPOSURE TO CO 2 WILL AFFECT BATTERY PERFORMANCE OVER
TIME.

B. Using vent valve wrench (T01) (093365-000), make sure that the vent valves shown
in IPL Section Figure 10001 (350) of all cell assemblies (260) are closed and secure.
Do not over-tighten.
CAUTION: DO NOT USE A WIRE BRUSH TO CLEAN CELL TOPS. CELLS MAY BE
DAMAGED BY SUCH ACTION.

C. Remove white deposits (potassium carbonate) from tops of all cell assemblies (260)
using a stiff bristled nonmetallic brush.

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WARNING: TO PREVENT INJURY WHEN USING COMPRESSED AIR, DIRECT


STREAM AWAY FROM BODY. USE SAFETY GOGGLES TO
PREVENT EYE INJURIES FROM FINE DUST PARTICLES.
D. Disperse residual dust and particles from the battery with blasts of clean, dry,
compressed air not over 1.4 bar (20 psi).
E. Coat cell assembly terminal nuts (340), (120), and all intercell terminal links (140
through 180) with a light film of non-acid petroleum jelly (M02). Silicone coatings are
not suitable due to the alkaline electrolyte.
F. Clean the exterior surfaces of the battery cover (20) and battery case (10 or 10A)
using a soft, clean cloth, moistened with water. Dry with compressed air or a dry,
clean cloth.

3. Disassembled Battery

A. Remove greasy residue from battery connector receptacle (90) with isopropyl alcohol
or degreasing agent.
B. After ensuring that the vent valves (350) are closed, wash each cell (260) in running
water. Do not allow any water to enter the cell. Dry with compressed air or a dry,
clean cloth.
C. Wash the battery case (20), cover insulator (40), spacers (50), gasket (130), and cell
hardware (280 through 340), and (120) in warm, soapy water (M03) to remove dirt
and salt deposits. A plastic scraper or a stiff bristled brush (nonmetallic) may be
used to aid in the removal of heavy deposits. Rinse away all soap (M03), and dry
with compressed air or a dry, clean cloth.
D. Remove the vent valves (350) from the cell subassemblies (260), and submerge
them and the O-rings (360) in a clean container of distilled or deionized water. This
treatment will dissolve any salt deposits which may have accumulated in the vents of
the valves or around the O-ring seat. Cover the cells (260) with a damp, clean cloth,
or take other precautions to prevent any foreign particles from falling into the cells
while the valves are removed.
NOTE: 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 CO 2 contamination.
E. After cleaning, test the vent valve assemblies (350) to ensure they operate within the
correct pressure range in accordance with Vent Valve Tests on page 1005.

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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
NOTE: All voltage readings are DC unless specifically otherwise stated.

2. Assembled Battery
The following procedure are for an assembled battery with battery cover shown in IPL
Section Figure 10001 (20), hold-down pad (30), and formed insulator (40) removed.
A. Visually Inspection
(1) inspect battery for evidence of damage or electrolyte leakage. If damage to
any part is visible, refer to TESTING AND FAULT ISOLATION for applicable
procedures.
(2) Check all ventilation openings to make sure that they are clean and clear.
(3) Inspect the connector receptacle (90) pins for condition; replace the
connector receptacle if the pins show any trace of arcing or excessive
oxidization.
B. Battery Insulation
NOTE: 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.
NOTE: Method A or B may be used to check with insulation breakdown.
(1) Method A
(a) Set up the multi-meter (volt, ohm, amp) and meter leads for a
measurement of 250mA.
(b) Connect the negative lead from the meter to the battery container.
(c) Touch the positive lead from the meter to the positive terminal of the
battery and then to the positive terminal of each cell.
(d) If, while performing the above, there is a reading other than zero, the
insulation should be considered defective. Disassemble and clean the
battery (see DISASSEMBLY and CLEANING).
(e) If, after cleaning the battery and assuring that everything is dry, a
leakage current is still indicated by a deflection of the needle, one or
more cells is defective. Isolate and replace the defective cell(s) (see
TESTING AND FAULT ISOLATION).

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(2) Method B
(a) On a completely reassembling the battery, measure the insulation
resistance between the block of cells and the metal box. The value
measured must be at least 10MΩ under a 250V continuous using a
megohmmeter.
(b) If, while performing the above, there the reading does not meet the
above criteria, the insulation should be considered defective.
Disassemble and clean the battery (see DISASSEMBLY and
CLEANING).
(c) If, after cleaning the battery and assuring that everything is dry, the
resistance is still less than 10MΩ, one or more cells is defective.
Isolate and replace the defective cell(s) (see TESTING AND FAULT
ISOLATION).
C. Check that the torque on each upper terminal nut (340) & (120) is 13 ± 1 Nm (115 ±
9 lb-in) (refer to the Table 8001).
D. Battery Voltage
Measure the voltage at the Main Connector. If the voltage is <21.0V then perform
Polarization Test.
E. 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 shown in IPL Section Figure 10001 (190) is
damaged, the entire assembly must be replaced (see CHECK and TESTING AND
FAULT ISOLATION).
(1) Ensure that the internal battery temperature is at 22.8°C ± 5.0°C (73°F ±
9°F). Connect an ohmmeter to auxiliary connector shown in IPL Section
Figure 10001 (240) pins 8 and 9 of the connector harness assembly (190).
Make sure the ohmmeter shows an open (≥ 20MΩ) at 22.8°C ± 5.0°C (73°F ±
9°F). An erratic reading represents a failure.
(2) Test the two resistors in the harness assembly: Using an ohmmeter, check
the resistance between the positive lug (230) and pin 1 of the connector.
Ohmmeter reading should be 29.8KΩ (±10%). An erratic reading represents
a failure.
(3) Check the resistance between the negative lug (220) and pin 3 of the
connector. Ohmmeter reading should be 32.4KΩ (±10%). An erratic reading
represents a failure.

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(4) Connect an ohmmeter to auxiliary connector pins 11 and 12 of the connector
harness assembly shown in IPL Section Figure 10001 (190). Make sure the
ohmmeter reads 1854Ω to 3116Ω at 22.8°C ± 5.0°C (73°F ± 9°F). An erratic
reading represents a failure.

3. 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 5004 for
replacement of lower terminal O-ring (270) if leakage is evident.
B. Visually check each cell vent valve assembly shown in IPL Section Figure 10001
(350) for defective O-rings, cracks, or other physical damage. Replace defective O-
rings (360). Suspect vent valves should be tested before being discarded in
accordance with Vent Valve Tests on page 1005.
C. Inspect intercell terminal links (140 through 180) 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. Spaces (50) should be clean and free of cracks or holes. Replace any that are
defective.
CAUTION: A DEFECTIVE BATTERY CONNECTOR RECEPTACLE CAN CAUSE
DANGEROUS OVERHEATING.
NOTE: A defective battery connector receptacle can cause battery discharge, as well
as in service low voltage.
E. Check the battery connector receptacle (90) for evidence of arching, corrosion,
cracks, or cross threaded terminals. Using the same methods in Battery Insulation
check on page 5001, check the insulation between the positive pin and the
connector shell and the negative pin and connector shell. Discard any receptacle
that is found to have any of the above noted damage or fails the insulation test.
Replace with factory new.
F. Visually check the harness assembly (190) 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 grounds for rejection. Discard the damaged
unit and replace with factory new.
(2) Inspect charge control thermistor and thermostat for damage, loose or
broken wire connections, cracks, dents, or other physical defects. Any
evidence of the above conditions, however minor, is grounds for rejection.
Discard the damaged unit and replace with factory new.

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COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
(3) Visually check all wiring damage to insulation, cracked or broken wire, and
other physical defects. Any evidence of the above conditions, however minor,
is grounds for rejection. Discard the damaged unit and replace with factory
new.
NOTE: Harness assembly (190) is a non-repairable item and should be
discarded if defective.
G. Cell Hardware
Check all small hardware items for damage.
(1) Replacement of cell hardware is limited to 280, 290, 300 or 310, 320, 330,
340, and the lower terminal O-ring (270) 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 (320), the polarity washer (300 or 310), the
Belleville washers (290) and terminal O-ring (270) being careful to
prevent anything from falling into the cell opening.
(b) Replace O-ring (270), install washer (280), the 2 belleville washers
(290), the polarity washer (300 or 310) and torque lower terminal nut
(320) per Table 8001.
H. Check battery cover (20) and battery case (10 or 10A) for damage.
When necessary, remove minor dents in the battery cover (20) and battery case (10
or 10A) using a hard rubber mallet. Polish out minor pits or scratches using a fine
grain abrasive porous cloth.

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539CH-1 and 5319CH1

ASSEMBLY

1. General
This section contains assembly instructions necessary after disassembly.

2. Harness assembly

A. Insert the harness assembly (190) connector into its mounting hole on the case (10
or 10A) and reinstall the connector mounting screws (250) and nuts (80) by
torqueing to 0.6 ± 0.06 Nm (5.2 ± 0.5 lb-in) (refer to the Table 8001).
B. Insert the thermostat liner (70) and thermostat liner assembly on the inside face of
the center partition, taking care to align the holes in the liner with the hole in the
partition.
C. Insert the thermostat plate (60) in back of spacer assembly so that the spacer
assembly is between the thermostat plate (60) and the thermostat liner (70), which is
against the partition.
D. Pass the thermostat-end of harness assembly (190) through the hole in the partition,
liner, and spacer assembly.
E. Attach the thermostat to the thermostat plate (60) with thermostat mounting nuts
(80). Torque to 0.6 ± 0.06 Nm (5.2 ± 0.5 lb-in) (refer to the Table 8001).

3. Liners and Cells


NOTE: Make sure all components are clean and dry before re-assembly.
Install liners shown in IPL Section Figure 10001 (50), harness assembly (190), and cell
assemblies (260) into the battery case (10 or 10A), using the following steps. Refer to
Figure 7001 and Figure 7002.
A. Insert one edge of bottom spacer into battery case (10 or 10A) from the left or right
side, then slide the spacer under the cell partition.
B. Install the center row spacers and cell subassemblies in accordance with the
following steps:
HINT: It is often easier to install the center cell of a row last. Observe polarity.

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COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

Max. Unit
Item Description Dimension [in]
Per Assembly
A SPACER ASSEMBLY 9.86 x 2.95 1
B SPACER 9.52 x 10.72 x 0.032 1
C SPACER 2.953 x 10.373 x 0.062 13
D SPACER 9.108 x 9.861 x 0.032 2
E SPACER 10.629 x 10.373 x 0.032 2
F SPACER 2.953 x 10.373 x 0.032 6
G SPACER 10.629 x 9.861 x 0.020 2
H SPACER 2.953 x 10.373 x 0.020 3
Cell and Spacer Installation
Figure 7001
(1) Install spacers in place on inside of cell partition, as shown in Figure 7001.
(2) Apply a small amount of non-acid petroleum jelly (M02) to the threads of the
cell terminals.
(3) Install side and end spacers into the center partition of battery case (see
Figure 7001).

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539CH-1 and 5319CH1
(4) Install five cell subassemblies (260) into positions 4, 5, 6, 9, and 10 in the
center partition of battery case (10 or 10A). Be sure to maintain the proper
cell arrangement and polarity orientation (see Figure 7002). Install the
charge control thermistor plate between cells 6 and 9, as shown in Figure
7002.
(5) Install a cell assembly (260) into positions 13 in the center partition of the
battery case. Insertion of the last cells is sometimes difficult and may be
assisted by pushing down on the terminals with a small block of soft wood.
NOTE: Spacers (50) are used as required to ensure the center row cells
are retained securely in place to prevent free movement of the
cells. As indicated in Figure 7001, the maximum quantity to be
used is as shown.

Cell Number and Polarity Orientation


Figure 7002

C. Install the left and right side row of cells and spacers in accordance with the
following steps, and as shown (see Figure 7001).
(1) Install spacers into the battery case (10 or 10A) as shown in Figure 7001.
(2) Install the left and right end spacers into the battery case (10 or 10A), as
shown in Figure 7001.
(3) Install six cell assemblies (260) in the left hand side of the battery case, be
sure to maintain the proper cell arrangement and polarity orientation (see
Figure 7002).

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539CH-1 and 5319CH1
(4) Install the remaining row cell assemblies (260) into the battery case. Be sure
to maintain the proper cell arrangement and polarity orientation (see 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 soft wood.
NOTE: Spacers are used as required to ensure the left and right hand row
of cells are retained securely in place to prevent free movement of
the cells. The maximum quantity to be used is shown in Figure
7001.
(5) Torque the lower terminals nuts (320) of the cell assemblies (260) to 5 ± 0.5
Nm (44 ± 4.4 lb-in) (refer to the Table 8001).

4. Battery Connector Receptacle


Install battery connector receptacle (90) into the battery case (10 or 10A) follows:

A. Assemble connector receptacle gasket (130) to battery connector receptacle (90).


B. Insert terminals of battery connector receptacle (90) through the oval mounting hole
in the front of the battery case (10 or 10A).
C. Attach the battery connector receptacle (90) to the battery case (10 or 10A) with
screws (100). Secure the receptacle by tightening the screws (100) to approximately
2.2 ± 0.2 Nm (20 ± 2 lb-in) (refer to the Table 8001).

5. Complete Battery

A. Install intercell terminal links (140 through 180) on the terminals of the cell sub-
assemblies (260) and battery connector receptacle (90) as shown in Figure 7002.
B. Install the two wire lead/lug assemblies of the harness assembly (190) on the
terminal posts of the cell sub-assemblies (260) as shown in Figure 7001.
C. Install nuts (340) & (120) and washers (330) & (110) onto the terminals of the cell
assemblies (260) and terminals of the receptacle adapter. Torque nuts (340) &
(120) to 13 ±1 Nm (115 ± 9 lb-in) (refer to the Table 8001).

CAUTION: DO NOT CRIMP WIRE LEAD/LUG ASSEMBLIES OF THE HARNESS


ASSEMBLY.
D. Install formed insulator (40) on top of the cells. Observe proper orientation.
E. Install the hold down pad (30) onto the cell assemblies, being sure that each vent
hole mates properly with the cell assembly vent valve.
F. Install the battery cover (20) onto the battery case (10 or 10A) and secure in place
by fastening the latches.

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539CH-1 and 5319CH1

FITS AND CLEARANCES

1. Torque Table

IPL Section Item Torque Value Name, Location


Figure Number
1 340, 120 13 ± 1 Nm (115 ± 9 lb-in) Nut, Terminal, Upper
1 320 5 ± 0.5 Nm (44 ± 4.4 lb-in) Nut, Terminal, Lower
1 250 0.6 ± 0.06 Nm (5.2 ± 0.5 lb-in) Screw, Connector
Mounting
1 100 2.2 ± 0.2 Nm (20 ± 2 lb-in) Screw, Sems
1 80 0.6 ± 0.06 Nm (5.2 ± 0.5 lb-in) Nut Aux. Connector
Mounting
Torque Values
Table 8001

2. Fits and Clearances Table

No fits and clearances required.

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COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
SPECIAL TOOLS, FIXTURES, EQUIPMENT, AND CONSUMABLES

1. Special Tools

A. Battery Maintenance Kit


NOTE: Equivalent tools can be used.

NOTE: A special tool 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.
(1) The syringe (T02) is used in the electrolyte level adjustment and the cell
puller (T04) is used in cell removal.
Item DESCRIPTION V09052 F6177
P/N P/N
T01 Universal vent wrench 093365-000 413876
T02 Syringe assembly (with nozzle 20 mm (0.79 in)) 020916-001 416232
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 MS valves 024398-000 -
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 DC continuous)
- Precision Multimeter (Volt, Ω, mA) 2000 points 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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COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1
3. Consumables
NOTE: Equivalent alternatives can be used for list items.
This paragraph describes the consumables used in the CMM.

DESIGNATION PARTNUMBER AND SPECIFICATION MANUFACTURER


Item OR SUPPLIER
DESCRIPTION
(NAME, ADDRESS, CODE)

Distilled or deionized water


Clear, colorless and odorless while boiling
Conductivity < 33 µS/cm
5 < pH < 7
COD < 30 mg/l (Chemical Oxygen Demand, methodology
to evaluate organic or mineral pollution)
M01 Chlorines Cl- < 5 mg/l Local Vendor
Sulfates SO 4 2- < 10 mg/l
Temperature for analysis and specifications are at 20°C.

STORAGE: dry and clean container without any corrosion


and damage; Temperature: 20 °C ± 5°C. Over 1 year of
storage, do an analyze of the liquid.

Mineral Vaseline
Neutral petroleum jelly
NATO: S 743
Density @ 60°C (140°F) Range = 0.840 - 0.866 Kg/L
M02 F: AIR 3565
Melting Point Range = 46°C - 52°C (115°F - 126°F)
US: VV-P-236/A
Acidity/Alkalinity = Neutral to Litmus
UK: DEF 2333

M03 Soap Local Vendor


Consumables
Table 9002

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COMPONENT MAINTENANCE MANUAL
539CH-1 and 5319CH1

ILLUSTRATED PARTS LIST

1. Introduction

A. Purpose
(1) This section provides illustrations and parts breakdown of the 539CH-1 and
5319CH1 batteries, 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) Effectively 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 indicate 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 Fig. and Index column.

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539CH-1 and 5319CH1
(7) Alpha Variant Item Numbers
(a) Alpha variants A - Z (except I and O) are assigned to existing item
numbers when necessary to show:
1. Added items
2. Service Bulletin modifications
3. Configuration differences
4. Optional parts
5. Product improvement parts (non-service bulletin)
(b) Alpha variant item numbers are not shown on the exploded view when
the appearance and location of the alpha variant item is the same as
the basic item.
(8) Vendors
The vendor of all parts shown in the parts list is as follows:

Vendor NAME / Vendor NAME /


Code ADDRESS Code ADDRESS

V09052 Saft America Inc. F6177 Saft


711 Gil Harbin Industrial Boulevard 126 quai Charles Pasqua
Valdosta, GA 31601 92300 Levallois-Perrot
USA France
Phone: (229) 247-2331 Phone: +33 1 58 63 16 00
Fax: (229) 247-8486 Fax: +33 1 58 63 16 18

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539CH-1 and 5319CH1

2. Alpha Numeric Index


Airline Stock Figure Item Units Per
Part Number Unit
Number Number Number Assy
024147-000 1 1 RF
025920-000 1A RF
009384-000 130 EA 1
012536-002 360 EA 1
015575-000 140 EA 5
015579-000 120 EA 2
015579-000 320 EA 2
015579-000 340 EA 2
018552-003 20 EA 1
018559-000 40 EA 1
018567-000 160 EA 10
018568-000 170 EA 1
018569-000 180 EA 3
018733-000 70 EA 1
018737-000 60 EA 1
018951-000 50 EA 1
021870-000 280 EA 2
021871-000 290 EA 4
022078-000 90 EA 1
022228-000 110 EA 2
022228-000 330 EA 2
023388-001 300 EA 1
023388-002 310 EA 1
023619-000 350 EA 1
024142-000 30 EA 1
024190-000 10 EA 1
024257-000 260 EA 20
024314-000 190 EA 1
025902-000 10A EA 1
026705-000 150 EA 2
REPLS 015577-000
090064-000 80 EA 6
091181-002 270 EA 2
092178-008 250 EA 4
093616-000 100 EA 4

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539CH-1 and 5319CH1

20

30

40

260

60

70 50

80

120

110 10 or 10A

100
90
130
Battery, Exploded View
Figure 10001 (Sheet 1 of 4)

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539CH-1 and 5319CH1
140

180

160

150

Battery, Exploded View


Figure 10001 (Sheet 2 of 4)

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539CH-1 and 5319CH1
230

220 210
240

250

200

190

Battery, Exploded View


Figure 10001 (Sheet 3 of 4)

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539CH-1 and 5319CH1

340

330

320
350
300 or 310

360 290
280
270

260

Battery, Exploded View


Figure 10001 (Sheet 4 of 4)

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539CH-1 and 5319CH1
3. Item Numeric Index
Nomenclature Units
Fig Index Part 1234567 Use Unit Per
Number ....... Code Assy
1 1 024147-000 BATTERY, 539CH-1 (09052) RF
BA35-01 (V08748)
1A 025920-000 BATTERY, 5319CH1 (09052) A RF
BA35-02 (V08748)
10 024190-000 . Case, Marked EA 1
10A 025902-000 . Case, Marked A EA 1
20 018552-003 . Cover EA 1
30 024142-000 . Pad, Hold Down EA 1
40 018559-000 . Insulator, Formed Top EA 1
50 018951-000 . Kit, Spacer EA 1
60 018737-000 . Plate, Thermostat Mounting EA 1
70 018733-000 . Liner, Thermostat Mounting EA 1
80 090064-000 . Nut, Aux. Connector Mounting EA 6
90 022078-000 . Connector, Adapter, Terminal EA 1
100 093616-000 . Screw, Sems EA 4
110 022228-000 . Washer, Belleville EA 2
120 015579-000 . Nut, Hex, M10x1.25 EA 2
130 009384-000 . Gasket, Connector EA 1
140 015575-000 . Link, Intercell - 0.125 X 0.750 X 1.334 EA 5
150 026705-000 . Link, Intercell - 0.125 X 0.750 X 1.516 EA 2
REPLS 015577-000
160 018567-000 . Link, Intercell - 0.125 X 0.750 X 1.476 EA 10
170 018568-000 . Link, Intercell - 0.125 X 0.750 X 2.023 EA 1
180 018569-000 . Link, Intercell - 0.118 X 0.668 X 2.331 EA 3
190 024314-000 . Connector Harness Assy EA 1
200 N/A . . Thermostat, Temperature Sensing
210 N/A . . Thermistor/Plate Assy
220 N/A . . Terminal Lug, Negative
230 N/A . . Terminal Lug, Positive
240 N/A . . Connector, Auxiliary
250 092178-008 . . Screw, Connector Mounting EA 4
260 024257-000 . Cell, CVH531KA (with hardware) EA 20
270 091181-002 . . O-Ring EA 2
280 021870-000 . . Washer, Flat EA 2
290 021871-000 . . Washer, Belleville EA 4
300 023388-001 . . Washer, Polarity, Red (+) EA 1
310 023388-002 . . Washer, Polarity, Blue (-) EA 1
320 015579-000 . . Nut, Hex, M10x1.25 EA 2
330 022228-000 . . Washer, Belleville EA 2
340 015579-000 . . Nut, Hex, M10x1.25 EA 2
350 023619-000 . . Valve, Vent EA 1
360 012536-002 . . . O-Ring EA 1
N/A – Not available separately

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539CH-1 and 5319CH1

STORAGE (INCLUDING TRANSPORTATION)

1. Introduction
NOTE: For more storage information, refer to latest revision of Saft Technical Note TN01.
Contact Saft for the latest copy of this document.
A. Storage preparation and packaging makes sure that the equipment is protected
against any attack by atmospheric agents.
B. 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".
C. Keep the batteries and spares in a dry and clean room.
D. 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.
A. The storage life is 10 years, if using the following conditions:
- Sealed packaging,
- Temperature: +20°C (68°F) ± 15°C (± 27°F),
- Humidity < 90%,
- Normal vertical position,
- Isolated from detrimental agents: i.e. dirt, dust, dampness, vibration, corrosive
atmosphere.
B. Saft Ni-Cd batteries may be stored in temperatures ranging from -55°C to +5°C (-
67°F to +41°F) or 35°C to 60°C (95°F to 140°F) for an accumulated exposure that
does not exceed 30 days
C. Lead batteries must not be stored in the same room.
D. The standard cardboard packaging is considered unsealed and allows 2 years of
storage under the above conditions. Battery should be stored in original shipping
container in accordance with ATA-300 specification.

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539CH-1 and 5319CH1

3. Inactive Stand-by Storage

A. 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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539CH-1 and 5319CH1
B. Topping or Refresh Charge
(1) The stand-by period defined in para. Inactive Stand-by Storage can be
prolonged by applying a ’topping’ or ’refresh’ charge, at the end of the period.
The charge is defined as a short charge at 0.1 C 1 A, 0.5 C 1 A or 1 C 1 A until
the voltage reaches the values given in the table below (Table 15001).
Charge Voltage
Rate
(End of “Refresh” Charge
0.1C 1 A 30.0V for 20 Cells
0.5C 1 A 31.0V for 20 Cells
1.0C 1 A 31.4V for 20 Cells
Topping or Refresh Charge
Table 15001
(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 0.1C 1 A 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 undergo 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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539CH-1 and 5319CH1

4. Active Stand-by 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.
Example: A 40 Ah battery on a continuous trickle charge of 150 mA for one month will
consume over 36 cm3/cell water total.

A. 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 could create conditions for a thermal
runaway with all its consequence.

5. Servicing after discharged storage


STORAGE TIME SERVICE PROCEDURE
Battery must have recently passed the capacity
criteria of Table 1001 before entering storage
Less than 3 months
Visual Inspection Check
Figure 1001 Entry Point “A”

Visual Inspection Check


3 months to 1 year Charge
Figure 1001 Entry Point “B”

More than 1 year Figure 1001 Entry Point “Received”

Return to Service Following Storage


Table 15002

6. 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.

24-31-07
15004
Apr 23/19

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