2 Machine description
2-8
2.3.2 Compression unit (continuation)
Oil scavenge window / oil scavenge non-return valve
The oil scavenge non-return valve prevents the oil separator
cartridge from flooding by scavenging oil from the air end.
Oil filter (item 12)
The oil filter (cartridge) cleans the compressor oil from impuri-
ties. The cartridge is screwed on to the scavenge stud by hand.
The efficiency of the filter is about 25 µm.
Combistat
The Combistat is a temperature indicator and control unit.
It is built into the instrument panel. It monitors the maximum
permissible service temperature of the unit, which is set at
110°C (red mark).
When this temperature is reached the electric circuit is discon-
nected and the unit stops automatically.
Do not bend the connecting line between the compressor and
the Combistat, otherwise the electric circuit is interrupted.
Safety valve (item 10)
The safety valve is mounted on the oil re-claimer before the oil
separator cartridge. It is set 1-2 bar above the max. gauged
pressure. The safety valve blows off in case the final pressure
is exceeded due to a fault somewhere in the system.
Description:
Compression unit
components (con-
tinuation)
