WARNING
Damaged air filter element.
Wear in the engine from intake of contaminated air.
➤ Do not try to clean the filter element by striking or knocking it.
➤ Do not wash the filter element.
Fig. 72 Compressor air filter maintenance
1
Maintenance indicator
2
Red zone indicator scale
3
Indicating piston of the maintenance indi‐
cator
4
Reset knob for the maintenance indicator
5
Filter element
6
Retaining clip
7
Filter cap
Fig. 73 Cleaning the filter element
1
Compressed air gun with blast pipe bent to 90° at the end
2
Filter element
➤ Open both doors.
Checking contamination of the air filter:
Air filter maintenance is necessary when the yellow piston inside the maintenance indicator reaches
the red zone.
➤ Check the air filter maintenance indicator.
If the yellow piston reaches the red zone, clean or renew the filter element.
10 Maintenance
10.5 Compressor
136
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E
