5. Insert a new lower filter element.
Wear gloves!
6. Screw on the lower housing clockwise.
Change the upper filter element (adsorption insert):
1. Unscrew the upper housing counter-clockwise.
2. Draw the filter element up and out.
3. Clean the lower housing and sealing surface with a lint-free cloth.
4. Check the housing gasket.
Housing gasket is damaged: replace gasket.
5. Insert a new filter element.
Wear gloves!
6. Screw on the upper housing clockwise.
Replace the oil indicator:
1. Unscrew the oil indicator.
2. Clean the housing and sealing surface with a lint-free cloth.
3. Screw in the new oil indicator.
Putting in operation:
1. Close the drain valve.
2. Turn on the «battery isolating switch».
3. Close the doors.
Dispose of old parts and contaminated materials according to environmental regulations.
Further information Further information on changing elements can be found in the "operating instructions for pressur‐
ised air filters (fresh air filters)" in chapter 13.9.
Starting the machine and performing a test run:
1. Switch the machine on and run it in IDLE mode for approx. 5 minutes.
2. Shut down the machine.
3. Wait until the machine has automatically vented.
Pressure gauge reads 0 psig!
4. Open the outlet valves.
5. Open both left-hand doors.
6. Check the fresh air filter housing and hose line for leaks.
7. Close the doors.
10 Maintenance
10.11 Maintenance for Optional Items
180
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
No.: 9_9570 07 USE