Section 5
MAINTENANCE
21
5.1 GENERAL
A good maintenance program is the key to long
compressor life. Below is a program that, when ad-
hered to, should keep the compressor in top operat-
ing condition. For maintenance requirements on en-
gine, refer to the Engine Operator’s Manual for a de-
tailed description of service instructions. See Sec-
tion 5.9, Parts Replacement and Adj ustment Proce-
dures for a detailed description of specific compres-
sor system components. Prior to performing main-
tenance, read the CIMA Safety Manual, if applicable
in your area.
WARNING
!
DO NOT remove caps, plugs and/or other compo-
nents when compr essor is running or pressur-
ized.
Stop compressor and relieve all internal pressure
before doing so.
5.2 DAILY OPERAT ION
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 addi-
tion of fluid becomes too frequent, a simple problem
has developed which is causing this excessive loss.
See the Troubleshooting Section (5.10) under Ex-
cessive Fluid Consumption for a probable cause
and remedy. Also check the engine oil level and the
radiator coolant level prior to starting.
NOTE
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. DO NOT use a leak sealing type of
anti---freeze. Should a 100% water solution be
used, a rust inhibitor must be added.
After a routine start has been made, observe the in-
strument panel gauge and be sure it monitors the
correct reading for that particular phase of opera-
tion. After the compressor has w a rmed up, it is rec-
ommended that a general check on the overall com-
pressor 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 AF TER 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 t he return line orifice and strainer.
2. Change compressor fluid filter.
3. Check E ngine Operator’s Manual for required
service.
5.4 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 E ngine Operator’s Manual for required
service.
5.5 MAINTENANCE EVERY 200 HOURS
Perform the following after every 200 hours of opera-
tion:
1. Change the fuel filter. Should persistent clogging
be evident, change the fuel filter more frequently.
2. Check fan belt tension.
3. Clean the radiator and cooler exterior. Depending
on how contaminated the atmosphere may be,
more frequent cooler and radiator cleaning may
be necessary.
4. Check E ngine Operator’s Manual for required
service.
5.6 MAINTENANCE EVERY 300 HOURS
NOTE
Fluid change period will vary according to fluid
brand. Refer to Lubrication Guide in Section 3.
Perform the following after every 300 hours of opera-
tion:
1. Change the compressor fluid and fluid filter. Run
the compressor for 5 to 10 minutes to warm the
fluid. Shut the compressor off and relieve all in-
ternal pressure before proceeding. Drain the
fluid sump by removing t he plug at the bottom of
the sump tank. For fluid filter element replace-
ment, see Filt er Element Replacement under the
Maintenance Section 5.9 Parts Replacement
and Adjustment Procedures. Fill the sump with
fluid according to specifications in Section 3. Re-
move any accumulated dirt from the fluid filler
cap prior to filling the sump.
2. Clean return line strainer.
3. Check E ngine Operator’s Manual for required
service.
5.7 MAINTENANCE EVERY 400 HOURS
Perform the following after every 400 hours of opera-
tion:
1. Check the engine RPM. Idle speeds should never
be allowed to fall below the minimums (see Sec-
tion 3 Specifications).
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