SIP TN1.5/25O Manual page 9

Scheduled Maintenance
Regular maintenance will ensure maximum efficiency for the longest period.
DAILY
0il - check the crankcase oil level, and top up with oil if required. Use SIP
compressor oil. Investigate high oil consumption; this indicates a possible pump
problem.
If your compressor is not used daily, check crankcase oil level before starting up.
The initial oil should be drained after 50 hours running or 1 week and thereafter
every 500 hours or (4 months) whichever is sooner.
Water - should be drained from the air receiver by means of the drain valve
located underneath the receiver. Simply unscrew the knurled ring to release the
water, and re-tighten finger tight. Failure to drain the air receiver will invalidate the
receiver warranty.
Leaks - check for leaks from the compressor, fittings, delivery lines and couplings
re-tighten or re-seal as necessary. Remember, even small leaks can cause
significant wastage of compressed air costing you both for extra energy used and
reduced compressor life.
Cylinder head bolts (not oil free models) - these should be checked and re-
tightened with a torque wrench to 10Nm after the first days running, after 50
hours, and thereafter every 500 hours or four months, whichever is the sooner.
The cylinder head needs to be completely cold before carrying out this operation.
Ai Filter (external filter models) - check and clean by reverse blowing with
compressed air, if badly contaminated, replace the cartridge.
WEEKLY OR AFTER 50 HOURS RUNNING (WHICHEVER SOONER)
Pressure Switch - observe that the compressor is cutting out at the correct
maximum pressure, and back in approximately 35psi lower. If adjustment is
necessary contact SIP for guidance.
Safety Valve - this is set to protect in case of pressure switch malfunction. With
the receiver pressure at maximum, the centre shaft can be lifted with ease to
check its function. Wear eye and ear protection during this check.
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