Do's and Dont's: Downloaded From Manuals Search Engine
Do's and Dont's: Downloaded From Manuals Search Engine
Dos
Dont’s
Never place your hands, fingers or other body parts near the compressor’s
moving parts.
Prevent body contact with grounded surfaces such as pipes, cylinders, cyl-
inder heads and motor. Never operate the compressor in damp or wet loca-
tions.
Always disconnect the compressor from the power source and remove the
compressed air from the air tank before servicing, inspecting, maintaining,
cleaning, replacing or checking any parts.
When not in use, the compressor should be stored in dry place, remove
the electrical supply. Keep out of reach of children. Lock – out the storage
area.
Cluttered areas invite injures. Clear all work areas of unnecessary tools,
debris, furniture etc.
Do not let visitors contact compressor extension cord. All visitors should
be kept safely away from work area.
Replacement parts not original may void your warranty and can lead to
malfunction and resulting injuries. Genuine parts are available from your
dealer.
When the compressor is not used, disconnect it from the power source
and open the drain cock to discharge the compressed air from the air tank.
Drain tank
Drain tank daily or after 4 hours of use. Open drain fitting and tilt
compressor to empty accumulated water.
Dress properly
Do not wear loose clothing or jewellery. They can be caught in moving
parts. Wear protective hair covering to contain long hair.
The motor air vent must be kept clean so that air can freely flow at all
times. Check for dust build-up frequently.
Electrical installation
This compressor motor and starter should properly grounded with correct size
copper wire to avoid electrical shock and damage to the equipment.
The correct rating of wires to be used for incoming connection and length
of the cable to be less than 5 mtrs.
WARNING
Avoid electrical shock hazard. Never use this
compressor with a damaged or frayed electrical cord or
extension cord. Inspect all electrical cords regularly. Never
use in near water or in any environment where electric
shock is possible.
cfm 46.19
lpm 1308
cfm 35.32
lpm 1000
17 Coupling Unit
SI.No Description LP HP
+0.01 +0.01
0.00
1 Cylinder bore mm Dia 100 Dia 60 0.00
Dia 99.835 - Dia 59.941 -
2 Piston mm Dia 99.855 Dia 59.915
0.000 0.000
3 Gudgeon pin size Dia 20-0.005 Dia 18 -0.005
Introduction
The Elgi air compressor model TRC 1000 MN UG is driven by an electric motor
by means of resillient flange coupling. It consists of three cylinders arranged
in a ‘W’ form on a crankcase. Dry type air filters are fitted to the suction side of
the LP cylinder heads. The discharge ports of the LP cylinder heads are
connected to the intercooler for effective cooling . Intercooler is connected to
the suction
port of HP cylinder head. The discharge port of the HP cylinder head is fitted
with a motor and mounted on a rigid, compact base. The air filters and other
pipe fittings are all clamped properly to arrest vibration. A fan with a fan guard
is provided to direct cool air on to the compressor unit. The fan draws the air
over the motor thereby cooling the motor also. An eye bolt used for lifting the
motor is provided at the terminal side of the motor. (Fix the eye bolt on top of
motor and lift the motor).
Crankcase
The crankcase is made of high grade cast iron an houses the crankshaft
assembly and cylinders. It act as the sump for lubricating oil and is provided
with a breather, drain plug and a dipstick assembly. The breather maintains a
partial vacuum in the crankcase to facilitate better lubrication.
The cylinders and cylinder heads are made of high grade cast iron and they
have close deep fins for effective cooling. The hardness of the cylinders is
closely controlled to ensure high wear resistance.
The pistons are of automotive type and made out of low expansion aluminium
alloy. They are provided with plain compression rings, stepped compression
rings and slotted oil control rings. The rings are made of special quality close
grained cast iron and designed for controlling wear and oil consumption to a
minimum. The gudgeon pins are of chrome steel case hardened and precision
ground.
Disc valves
Special type concentric disc valves have been used for suction and discharge
operations. The springs used are of high quality spring steel.
The intercooler consists of a series of copper tubes, on which fins are wound
for effective cooling. It is mounted above the motor. It is provided with a safety
valve and a drain valve. The aftercooler is also made of copper tubes with fins
wound on them and arranged together for better cooling. A drain valve is
provided on the aftercooler.
Average Life
This type of coupling does not require any attention during running .
i. The coupling hubs will not require replacement earlier than six years of
continuous use.
ii. Misalignment if any in the coupling will reduce the life of the coupling
element.
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NOTE
BEFORE COMMISSIONING THE COMPRESSOR
Fill up the crankcase with SERVO PRESS 150 oil upto the
maximum mark on the dipstick.
b. Position the compressor in the locomotive and check the level of the
compressor by using a spirit level.
c. Ensure that the compressor unit is properly aligned and all bed bolts
are fully tightened.
d. Rotate the compressor unit by hand and feel whether it is free, except
for compression forces.
f. Start up the unit and drain intercooler and aftercooler for a few minutes
and also ensure intercooler safety valve is free and functioning
properly.
h. If all the above checks are satisfactory, the unit can be commissioned
for regular service.
11
General
Cleanliness and care must be observed whenever inspection and checks are
being carried out on the compressor and its accessories. For cleaning interior
parts, only rags which do not separate should be used. Cotton waste should
not be used. If any defect is noticed, it should be immediate attended to. The
unit should be properly maintained as per the undermentioned schedule.
WARNING
Lubricating oil change should be carried out during
Recommended maintenance schedule
Recommended lubricating oil; Servo press 150
NOTE
The compressor should be run for a short while and
draining of the oil should be done when the oil is warm.
Do not use any cleaning agents to clean the interior, when
changing oil.
b. Check the oil level in the crankcase. Replenish with the correct grade of
oil if required.
12
e. Clean the suction filter element thoroughly by using air from inside to
outside.
NOTE :
RECOMMENDED GREASE
During IB schedule
d. Visually check the disc coupling for any abnormality in disc back
e. Check the oil level in the crankcase and topup the required quantity of oil
13
c. Dismantle the disc valves, check the springs, top plates and bottom plates.
There should not be any scratches or damage in the seating of valve
plates. If there is any damage, it should be lapped. If the springs are
damaged, they should be replaced. All the parts should be decarbonised
and thoroughly cleaned in kerosene. Reassemble the valve and assemble
it to the cylinder with new packings.
d. All the pipe lines should be checked for leaks at joints and packings
renewed as necessary.
Check the crankshaft assembly thoroughly. There should not be any shake in
the connecting rod about the crank pin. This can be checked by fixing the
crankshaft assembly between centres and shaking the connecting rod. Also
check the small end needle roller bearings. If there is any major repair, the
same may be attended to immediately.
Maintenance Maintenance
SI
Maintenance Practice schedule for schedule for
No.
TRC 1000 MN TRC 1000 MN UG
3 Intake air filter- Inspect element, clean if dirty 90 Days 180 Days
4 Inlet & Discharge Valve cleaning & Inspection 90 Days 180 Days
14
General
Only a skilled technician who knows about the compressor should dismantle
and reassemble the compressor. Before dismantling the compressor, make
sure that it is free of compressed air. Pull the safety valve and ensure this.
Ensure that the electric power is disconnected from the unit.
Accessories
Remove the intercooler after removing the respective pipe fittings and bolts.
Remove the aftercooler and suction filters. Open the drain plug and drain the
oil from the crank case.
Remove the cylinder head and take out the disc valve. Take care not to damage
the disc valves.While dismantling the disc valve, the position of the springs
should be carefully noted which will help during reassembling. Refer the
exploded view of the disc valve which is self explanatory. If damaged; the
springs should be replaced with new ones. Also check the packings and if
necessary replace by new ones.
Unscrew the cylinder and remove the cylinder. If the cylinders are tightly fixed
to the crankcase rotate the fly end hub. The cylinders will automatically come
up.
Piston assembly
Remove the circlip by using a criclip plier and gently knock out the gudgeon
pin. Inspect for scratces or slackness in the piston boss. If the pin is worn out
use a new pin. Remove the piston rings using a piston ring expander.
Clean the piston rings and the ring grooves in the piston. Measure the piston
size, gudgeon pin bore size, piston ring gaps at butts and side clearances.
Replace the rings as a set when limiting clearances have been reached.
Crankshaft assembly
Disassemble the disc coupling. Then remove the free and cover. Remove the
crankshaft assembly through the fly end cover bore along with the cover.
Using puller remove the fly end cover from the crankshaft assembly. Clean the
crankshaft and connecting rod assembly thoroughly in kerosene and dry with
compressed air. Inspect the bearings, if found damaged, replace them with
new ones.
15
Crankshaft assembly
Remove the disc coupling. Then remove the free and cover. Remove the crank-
shaft assembly through the fly end cover bore along with the cover.
Using puller remove the fly end cover from the crankshaft assembly. Clean the
crankshaft and connecting rod assembly thoroughly in kerosene and dry with
compressed air. Inspect the bearings, if round damaged, replace them with
new ones.
Bearing
Heat them to a temperature from 100C to 120C in an oil bath or on a hot plate
which is heated by a flame or electricity insert the bearings on the shaft so that
they will slide in and fit tight when cooled.
Take the connecting rod and crankshaft assembly, clean it and oil the bearings.
Rotate the bearings by hand and check for any tightness. They should have
free rotation. Check whether the splasher pin is secured in position. The flat
sides of the splasher pin should be perpendicular to the axis of the shaft.
Fix the fly end cover on the crankshaft assembly. Insert the crankshaft assembly
through the flyend cover bore on the crankcase. Fix the free end cover on the
other side. Then fasten the end covers bolts uniformly.
16
1. Fit the motor side hub on motor shaft, fix key way grub screw
4. Put the compressor on base frame ensuring that the spacer encovers the
compress side hub and lamina screws get through the compressor side
hub flange tighten the compressor side hub to spacer bolts.
5. Locate the compressor properly and tighten it to the base (this is not to be
disturbed further)
7. Once 101 mm is maintained. Fix the motor to the base frame firmly.
8. Mount dial gauge on compressor side hub so that one dial gauge touches
motor side hub radially and other dial touches fan blade coller (Ø 300)
axially (ensure dial gauge pressure by 2 bar)
9. Adjust ‘0’ on both dials at the top position (i.e., 12’O’ clock position)
10. Take radial / angular readings at 12, 3, 6, 9 ‘O’ clock position record as
follows
11. Sample reading for interpretation - radial allowable limit - 0.85 mm (TIR)
17
INTERPRETATION
CORRECTIVE ACTION
a. To adjust the vertical shift (0.8), loose motor foundation bolts add 0.4mm
shims bellow all 4 legs of motor
c. After above activities, tighten the motor foundation bolts fully, and again
take dial gauge reading for radial.
d. The allowable limit for radial is 0.85 (TIR) as such plaese follow above
procedure till the reading are within limits.
Reading taken
from this view
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CORRECTIVE ACTION
a. It’s required to rotate the motor towards left by keeping the bolt no ‘1’
fixed, loosing bolt no 2,3&4 and by pushing the side screw at bolt
number 4.
b. Shift motor by side screws towers left by keeping a close watch on dial
gauge reading till dial gauge reading.
c. After above activities, tighten the motor foundation bolts fully, and agian
take dial gauge reading for angular.
d. The allowable limit for radial is 1.7mm at Ø 300 (TIR) as such please
follow above procedure till the reading are within limits.
Hex bolt
Hex nut
Hub motor side
Over load washer
19
CORRECTIVE ACTION
1. Vertical shift (0.2 TIR) is within the limit
no need to add shims.
2. H o r i z o n t a l s h i f t w i t h i n t h e l i m i t
[+0.12+(-0.4)=0.52mm] still you can
20
Add shim here
21
1. To adjust angular (1.7) and radial
shift (1.2 TIR), add shims at rear
foot.
22
MOTOR
Disc coupling model assy instructions
COMPRESSOR
COUPLING
The following chart gives the tightening for various fasteners used in the
compressor.
Tightening
SI.
Location Thread size torque Values are
No.
in N-m
23
Check Remedy
Check Remedy
24
Check Remedy
Coupling is wornout
ä Check the coupling hubs & change
(Loose on the bore) if required.
ä
Check Remedy
Dirty oil Oil, level low ä Change oil, Fill correct grade of oil
upto maximum level. (SERVO 150)
ä
25
Check Remedy
Insufficient lubrication
or oil become too thick ä Maintain correct oil level or change
the oil.
ä
Incorrect direction of
rotation
ä Correct the direction of rotation.
ä
Check Remedy
Change to recommended
Oil viscosity to low. ä grade.
Check Remedy
26
Allow the unit to run in no load condition for some time, then close the unit and
keep it under shelter, free from dust and moisture.
Remove the air filter and pour 50ml preservation oil (Servo press 150) through
suction port of each LP cylinder. Remove the suction pipe of H.P cylinder,
pour rust prevention oil for the HP cylinder and then allow the unit for a few
minutes. Drain oil from the crankcase.
Now assemble the suction pipe and air filter, cover the whole unit. Keep the
unit under shelter. The unit should be thoroughly cleaned and examined every
month for corrosion prevention and free rotation.
27
General
The motor used will be of reputed make and thoroughly inspected to ensure
long and trouble free service.
While assembling fan flange and coupling over the motor shaft only appropriate
tools should be used. While changing the fan, complete fan with flange
assembly should be changed to avoid unbalance or after changing the fan ;
the fan with flange assembly should be balanced. The shafts of the compress
and the motor should perfectly be levelled and aligned.long and trouble free
service.
Electrical Connections
Maintenance
Motors should be cleaned by blowing dry air at regular intervals to keep the
ventilating passages clean.The bearings are prelubricated with lithium based
grease having a dripping point above 160OC. Onlyrecommended grade of
grease should be used for the bearings. In case of motors that have regreasing
attachment frame size upto and including AM 200 and AJ 180, the grease in
the bearings shall be changed at an interval of 2 years. While regreasing, the
bearings and bearing covers should be well cleaned and then fill the grease.
28
In case the motor is stored idle for long period or if it is transported under very
damp condition, the insulation resistance should be checked before connecting
it to the supply. The insulation resistance of the motor shall be measured
between the windgings of the motor and its frame by means of a megger. If
the measured insulation resistance of the motor is less than IMDHM/KV when
the motor is cold, it should be dried out before rated voltage is applied to the
terminals of the motor.
The motor can be dried by placing heaters or lamps around it and inside also
or by blocking the motor so that it cannot rotate and then apply such a low
voltage to the starter terminal that full load current flow in the starter. Care
must be taken during the drying out the windings that the temperature of the
induction coil does not exceed 150 OC which is the maximum allowable
temperature for class F insulation.
29
10
9
1 2 3 4
5 6 7
30
2 13 Box spanner
4 19 Box spanner
11 Circlip plier
12 Pipe wrench 9”
13 Screw driver 6”
31
32
33
34
35
Piston ring set dia 100 for TRC 1000 MN UG code : 072404039
36
37
38
2 BASE 1 000221720
39
40
7 A020030 Breather 1
41
42
43
44
22 Gasket 1 000424060
45
46
47
48
49
50
51
52
53
9
8
7
6
5
4
3
54
55
56
57
58
59
BASE MOUNTED
Revision Status
R00 - First Edition : June 2010
R01 - First Revision : June 2012
R02 - Second Revision : August 2012
Contact Info :
ELGI EQUIPMENTS LIMITED
Coimbatore, TN - 641 005, INDIA.
e-mail : info@elgi.com
ccs@elgi.com
www.elgi.com
CHAPTER-i
OPERATION AND MAINTENANCE MANUAL
User Information
Safety
Installation
System Operation
Electrical Systems
Maintenance
Repair schedule
Coupling assy
Trouble Shooting
Preservation
Motor maintenance
Recommended Spares
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CHAPTER-iI
PARTS LIST MANUAL
Cooling system
Piston assembly
Airfilter assembly
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Address :
Model :
FAB. No. :
Year of manufacturing :
Motor :
Capacity :
Rated Pressure :
Date of delivery :
Note : The warranty on this compressor is valid only if all the details
above are filled and the dealer stamps and sign this page
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Yours sincerely,
Jairam Varadaraj
Managing Director
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Elgi has modern manufacturing facilities in India, China and France. It’s
equipped with state-of-the-art high precision rotor cutting and grinding
machines, turning centres, CNC horizontal and vertical machining centres.
All manufactured components / products pass through stringent quality
audits and are tested to ensure performance and reliability. Our
Manufacturing test rooms are atmospheric controlled. All parts and finished
products undergo stringent quality checks to ensure that Elgi delivers
only high quality products to its customers.
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We are confident that the equipment you have purchased will give you
satisfactory service for its life. We thank you for giving us an opportunity to
serve you with our compressor.
All information, illustrations and specifications in this manual are based on the
latest product development available at the time of supply. we reserve the
right to make changes in the product at any time without notice. we assure you
of the best service in maintaining uptime of the compressor through prompt
service and supply of spare parts as per your requirements.
This manual must made available to the compressor operating personnel at all
times. Please read the instructions very carefully, right to the end, as the
operating life and reliability of the compressor depends to a large extent on
correct operation and maintenance.
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Read and understand all the operating instructions, safety precaution and
warnings in the Instruction Manual before operating or maintaining this
compressor.
Most accidents that result from compressor operation and maintenance are
caused by the failure to observe basic safety rules or precautions. An
accident can often be avoided by recognising a potentially hazardous
situation before it occurs, and by observing appropriate safety procedures.
Basic safety precautions that are outlined in the “SAFETY” section of this
Instruction Manual have to be followed with utmost care through out the life of
the equipment.
Never use this compressor in a manner that has not been specifically
recommended by manufacturer, unless you first confirm that the planned use
will be safe for you and others.
1. MODEL
2. FAB NUMBER
3. YEAR OF MANUFACTURE
4. PART NAME
5. PART NUMBER
6. REQUIRED QUANTITY
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SAFETY
WARNING
Death or serious bodily injury could result from
improper or unsafe use of compressor. To avoid these
risks, follow the basic safety instructions.
NOTE
Make sure this manual is read and carefully understood
before starting/ operating this machine.
Proof of purchase will be required for warranty
service.
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The manual has been prepared with utmost care to help you understand the
various systems of the compressor thoroughly through descriptions,
information and illustrations.
All information, illustrations and specifications in this manual are based on the
latest product information at the time of preparation of the manual. We reserve
the right to make changes in the product at any time without notice.
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ELGI provides dedicated customer care and after-sales support through the
CCS, a computerized system developed in-house. The CCS aims to minimize
the time taken to resolve complaints.
At the heart of the CCS is the toll-free telephone number 1800-425-3544 (within
India BSNL MTNL lines) at the centralized customer care centre in Coimbatore
Customers can register their service requirements or complaints with
coordinators here
A unique tracking number is generated for each call logged by the CCS. The
customer is sent an automatic e-mail acknowledgement with the tracking
number and details of the call for references.
A service engineer is assigned to the call, and the date and time of the engineer’s
visit are communicated to the customer by E-mail. Every
requirement / complaint must be resolved and closed in the CCS within a
specified time limit, failing which the call is brought automatically to the notice
of the manager higher in the hierarchy, upto the level of the Managing
Director. Thus the CCS ensures that not only customer complaints are logged,
but also attended on time every time.
Enquiries
The CCS also creates a database of customers, adding every new customer
calling and thereby building a large pool of installation details. These details
are used to provide value - added services to improve customer satisfaction
with ELGI products.
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CCS-Working Hours
The CCS at ELGI works for six days a week from 08.30 to 21.30 IST (Monday
to Saturday)
Multi-lingual Capability
The co-ordinators at the CCS are Multi-lingual. They can handle calls in all the
major regional languages of India
Coverage
The toll-free number of the CCS is accessible from the following areas.
Fax : 0422-2589240
CCS@elgi.com
If you have used the CCS, you may be contacted and your feed back would be
soughted on the after-sales support received by you. Your response helps ELGI
to improve this service
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