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Fig. 71 Changing the oil separator cartridge
1
Control air line union nut
2
Oil scavenge pipe (screwed to the cover)
3
Oil scavenge pipe union nut (lower fitting,
screwed to the dirt trap)
5
Air pipe
7
Cover
8
Fixing screw
9
Control valve
10
Solenoid valve
11
Sealing ring
13
Oil separator cartridge
14
Pressure transducer
15
Relief valve guard plate
➤ Open the left-hand door.
Changing the oil separator cartridge
1. Unscrew the union nuts
1
and
3
and place the components with connections carefully to one
side.
2. Pull out the plug to the solenoid valve
10
and withdraw the cable.
3. Pull out the plug to the sensor
14
and withdraw the cable.
4. Remove the screws
8
securing the cover
7
to the tank.
5. Remove the protective guard
15
from the relief valve.
6. Carefully lift the cover and put to one side.
Take particular care with the following components:
■ The oil scavenge line
2
screwed to the underside of the cover.
■ The pressure relief valve, covered by the guard plate
15
.
7. Take out the old cartridge
13
and sealing rings
11
.
8. Clean all sealing surfaces, taking care that no foreign bodies (dirt particles) fall into the oil sep‐
arator tank.
9. Insert the new oil separator cartridge with sealing rings and screw down the cover.
10. Replace the relief valve guard plate
15
.
11. Replace and tighten all fittings.
12. Reconnect cables.
10 Maintenance
10.5 Compressor
134
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E