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10.9.2.1 Draining condensate
Material Receptacle
Cleaning cloth
1. Place the receptacle under the combination filter hose lines.
2. Open the pre-filter and micro-filter condensate drain shut off valves.
3. Close the door.
4. Switch the machine on and run it in IDLE mode.
The condensate collecting in the filter housings is blown out.
5. Stop the compressor as soon as air escapes.
6. Open the right-hand access doors.
7. Close the shut-off valve.
8. Close the doors.
Condensate must be stored in suitable containers and disposed of in accordance with local
environmental regulations.
10.9.2.2 Changing the filter elements
The pre-filter and micro-filter contain different elements and these must be changed as a pair. Note
their positioning!
Do not touch the new filter elements with bare fingers, as this will impair their function!
Using the combination filter without an element installed is not permitted.
Material Spare parts
Filter wrench
Wrench
Cleaning cloth
Clean fabric gloves
Precondition Machine is cooled down.
The «battery isolating switch» is off.
Ensure that the combination filter is not under pressure.
➤ Slowly open the pre-filter and micro-filter condensate drain shut off valves.
Remaining pressure escapes.
Changing the pre-filter element:
1. Unscrew and remove the drain hose from the filter housing.
2. Unscrew the filter housing counter-clockwise.
3. Draw the filter element down and out.
4. Clean the filter head, housing and sealing surface with a lint-free cloth.
5. Check the housing gasket.
Housing gasket is damaged: replace gasket.
10 Maintenance
10.9 Options
148
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E