Dispose of old cooling oil and any materials or parts contaminated with oil according to envi‐
ronment protection regulations.
Starting the machine and performing a test run:
1. Start the machine and run in IDLE until the operating temperature is reached.
2. Close the outlet valves.
3. Shut down the machine.
4. Wait until the machine has automatically vented.
Pressure gauge reads 0 psig!
5. Open the outlet valves.
6. Open the right-rear door.
7. After approximately 5 minutes: Check the cooling oil level.
Cooling oil level too low: Replenish with more cooling oil.
8. Visually inspect for leaks.
9. Close the door.
10.5.5 Oil separator tank dirt trap maintenance
The control valve is mounted on the oil separator tank cover. The control valve has two different
dirt traps that must be cleaned at least once a year.
Material Cleaning cloth
Wrench
Small screwdriver
Maintenance kit, control valve
Petroleum ether or spirit
Precondition The machine is shut down.
The machine is fully vented, the pressure gauge reads 0 psig.
The machine is cooled down.
All compressed air consumers are disconnected and the air outlet valves are open.
The «battery isolating switch» is off.
10 Maintenance
10.5 Compressor Maintenance
No.: 9_9570 07 USE
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
147