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Fig. 29 Maintenance indicator
1
Maintenance indicator
2
Indicating piston, maintenance indicator
3
Red zone indicator scale
4
Maintenance indicator reset button
➤ Check the air filter maintenance indicator.
If the yellow piston has reached the red zone: Replace the primary filter element.
Cleaning the dust evacuator valve:
Coarse dirt particles in the intake air fall to the base of the filter housing and are deposited around
the dust evacuator valve. When maintaining the engine air filter, these dirt particles must be re‐
moved.
Fig. 30 Cleaning the dust evacuator valve
1
Filter cap
2
Dust evacuator valve
3
Evacuator vent
4
Valve area
5
Cleaning procedure
6
Coarse dirt particles
1. Compress valve area
4
during cleaning procedure
5
.
Evacuator vent opens.
Coarse dirt particles and accumulated dust are expelled.
2. Release the valve area.
10 Maintenance
10.4 Drive engine maintenance
106
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M55 PE SIGMA CONTROL SMART pV
No.: 902366 10 USE