9
Maintenance
9
High aging stability
High disperse capacity
Low emulsification tendency
Flash point: above 400°F/ 200°C
Pour-point: 5° below lowest ambient temperature
minimum
Minimum foaming
High corrosion protection
Hydraulic or turbine oil
Basic oil: solvate
Operating temperature: up to 230°F / 110°C
Viscosity class: ISO VG 68
Viscosity at 104°F / 40°C: ca. 42-50 mm2/s (cST)
Oil Requirements
Screw compressors must be operated using the
most suitable oil for operation. The compressor man-
ufacturer must approve this oil for use. The oil must
also be suitable for use in unfavorable conditions
such as: contamination of the intake air by gases,
solvent vapors, exhaust gases, and high ambient
temperature conditions.
Suitable types and brands of oil may be specified
on request. Suitable screw compressor oils can be
mineral oils, synthetic oils, and biological degrad-
able oils.
The substances and materials used in the compres-
sor such as seals must be taken into account when
selecting the types of oil. Corrosion or other material
degradation must not occur.
Important: Do not mix different types of oil.
Important: In the case of ambient temperatures
close to freezing, prevent the unit from freezing.
Pipeline Materials:
The oil used in screw compressors can degrade
plastics used in air pipelines.
Oil Recommendation
WARNING: COMPRESSOR MUST BE STOPPED AND ALL AIR RECEIVERS DISCHARGED BEFORE
CHANGING OIL. COMPRESSOR OIL IS HOT, ABOVE 175 DEGREES F (80 DEGREES C) AND
CAN CAUSE BURNS.
Note: Change the oil with the compressor at operating temperature of 140-175 degrees F
(60-80 degrees C).
1. Turn off the compressor, hydraulic system
and truck engine to ensure that compres-
sor is not started.
2. Discharge air receiver.
3. Wait for one full minute.
4. Slowly unscrew the oil fill cap on the com-
pressor case.
5. Place a container under the oil drain pipe
and carefully unscrew the oil drain cap.
6. Drain the oil from the compressor case,
then replace and tighten oil drain cap.
7. Refill with oil to maximum level and replace
oil fill cap. Oil capacity is 4 quarts.
8. Operate compressor for 3 minutes.
9. Check oil and fill to maximum if necessary.
Changing the Oil
OIL FILL
OIL DRAIN
Summary of Contents for SRS-40
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