Section 5
MAINTENANCE
27
5.1 GENERAL
A good maintenance program is the key to long
compressor life. Below is a program that, when
adhered to, should keep the compressor in top
operating condition. For maintenance requirements
on engine, refer to the Engine Operator’s Manual
for a detailed description of service instructions.
See Section 5.11, Parts Replacement and
Adjustment Procedures for a detailed description of
specific compressor system components. Prior to
performing maintenance, read the CIMA Safety
Manual, if applicable in your area.
5.2 DAILY OPERATION
Prior to starting the compressor, it is necessary to
check the fluid level in the sump. Should the level
be low, simply add the necessary amount. If the
addition of fluid becomes too frequent, a simple
problem has developed which is causing this
excessive loss. See the Troubleshooting Section
(5.13) under Excessive Fluid Consumption for a
probable cause and remedy. Also check the engine
oil level and the radiator coolant level and drain
water from the engine fuel/water separator prior to
starting.
After a routine start has been made, observe the
instrument panel gauge and be sure it monitors the
correct reading for that particular phase of opera-
tion. After the compressor has warmed up, it is rec-
ommended that a general check on the overall
compressor and instrument panel be made to
assure that the compressor is running properly.
Also check the air filter maintenance indicators if
supplied.
5.3 MAINTENANCE AFTER INITIAL 50 HOURS OF
OPERATION
After the initial 50 hours of operation, a few mainte-
nance requirements are needed to rid the system of
any foreign materials. Perform the following mainte-
nance operations to prevent unnecessary prob-
lems.
1. Clean the return line orifice and change the
strainer.
2. Change compressor fluid filter.
3. Check Engine Operator’s Manual for required
service.
4. Check fuel filter for water.
5. Confirm that sump cover bolts are tightened to 60
ft.-lbs. (81 Nm).
5.4 MAINTENANCE EVERY 50 HOURS
1. Inspect and replace air filter elements (if
required).
2. Check fuel filter for water.
5.5 MAINTENANCE EVERY 100 HOURS
After 100 hours of operation, it will be necessary to
perform the following:
1. Clean the radiator and cooler exteriors.
2. Check Engine Operator’s Manual for required
service.
5.6 MAINTENANCE EVERY 200 HOURS
Perform the following after every 200 hours of oper-
ation:
1. Check fan belt tension.
2. Clean the radiator and cooler exterior. Depending
on how contaminated the atmosphere may be,
more frequent cooler and radiator cleaning may
be necessary.
3. Check Engine Operator’s Manual for required
service.
5.7 MAINTENANCE EVERY 250 HOURS
1. Change engine oil and filter.
2. Change the compressor fluid filter.
3. Change the return line strainer.
4. Change the engine fuel filter.
5. Change the engine fuel-water separator.
6. Change the air filter elements.
DO NOT remove caps, plugs and/or other com-
ponents when compressor is running or pres-
surized.
Stop compressor and relieve all internal pres-
sure before doing so.
WARNING
The radiator and engine cooling system must be
drained and flushed every two (2) years. Replace
the coolant with a solution of 50% ethylene glycol
and 50% water or as required for your geograph-
ic location. DO NOT use a leak sealing type of
anti-freeze. All engines must have Supplemental
Coolant Additive (SCA) added to the engine
coolant system. Refer to your Engine Operator’s
Manual for details and specific engine require-
ments.
NOTE
Fluid change period will vary according to fluid
brand. Refer to Lubrication Guide in Section 3.
NOTE
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