10.5.3.1 Draining the cooling oil
1. Open both doors.
2. Remove the plug
2
from the oil separator tank filling port.
Draining the oil from the separator tank:
The oil separator tank can be drained from a point accessible through a hole in the floor panel.
1. Position a receptacle below the separator tank drain plug
3
.
2. Unscrew the drain plug
3
and allow the cooling oil to drain into the receptacle.
3. Fit a new gasket on the drain plug and screw it back in again.
Draining the oil from the cooler:
This is done from a drain valve with the aid of a separate drain hose.
1. Position a receptacle beneath the oil cooler drain point (accessible through a hole in the floor
panel).
2. Connect a suitable drain hose
6
to the oil cooler quick-release coupling
5
.
3. Lead the hose through the hole in the floor panel and into the receptacle, securing it in place.
4. Open the drain valve
4
slowly and drain the cooling oil.
5. Close the drain valve and remove the drain hose.
Performing final work steps:
1. Replace the plug
2
in the oil separator tank filling port.
2. Close the doors.
Dispose of used oil and oil-contaminated working materials according to environmental pro‐
tection regulations.
Further information See chapter 10.5.2 for oil filling.
10.5.3.2 Option sc, si
Draining cooling oil (stationary compressors)
Compressor cooling oil and engine coolant drain lines are led to a central point outside the machine
on stationary machines. Oil drainage is via hose lines screwed into the drain ports of the oil separator
tank and the airend. Each hose line is provided with a shut-off valve and a plug.
10 Maintenance
10.5 Compressor
128
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E