8
SRS-40 Owner’s Manual
The oil level in the compressor case is an important factor for the operational reliability of
the system.
Check Intervals:
1. Before starting unit.
2. Every 100 operating hours
Check Procedures:
1. Turn off the compressor, hydraulic system and
truck engine to ensure that compressor is not start-
ed.
2. Wait for one full minute.
3. Slowly unscrew the oil fill cap on the compressor
case (also referred to as the separator receiver).
4. Check the oil level.
5. If the oil level is under the minimum level, add oil to maximum level as shown.
6. Replace cap and hand tighten. Unit is ready to be put into service.
Note:
The screw-type oil fill cap is has a bleed hole which will release pressure in the com-
pressor case. The bleed hole is exposed after the cap is loosened about two turns. If there
is still pressure in the case, wait a few minutes for it to bleed off.
Condensation Drain
Condensation (water) in the oil affects the operation and life of the screw compressor.
Screw compressors are especially vulnerable due to the fact that the oil is used for both
sealing and lubrication. Both oil and water are removed from the air in the separator car-
tridge and returned to the compressor case. Condensation builds up faster when the com-
pressor is operated intermittently in humid conditions. Under these conditions, the conden-
sate should be drained each day before start up when the compressor is cold.
Possible Malfunctions:
Insufficient lubrication.
Poor air/oil separation and high pressure across the separator cartridge.
Corrosion and rust formation.
Maintenance Procedure
1. Unscrew oil fill cap.
2. Place a container under the oil drain pipe and carefully unscrew the oil drain cap.
3. Drain the water from the compressor case until nothing but oil comes out, replace the
cap and tighten.
4. Fill the compressor case with oil to maximum and replace oil fill cap.
5. Turn on compressor and operate for three minutes.
6. Check oil level and fill if low.
7. Dispose of condensate (mixture on water and oil) in accordance with local and federal
regulations.
Oil Level
MAX
MIN
Summary of Contents for SRS-40
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