4. Switch the machine on and run it in IDLE mode for approx. 2 minutes.
The condensate collecting in the filter housings is blown out.
5. Shut down the machine.
6. Open both doors.
7. Close the drain valve.
8. Carefully remove the receptacle.
9. Close the door.
Condensate must be stored in suitable containers and disposed of in accordance with local
environmental regulations.
10.9.4.2 Checking the oil indicator
The fresh air filter is fitted with an oil indicator. When the indicator is blue, the filtration function can
no longer be ensured and the filter must not be used. Both filter elements and the oil indicator must
be changed (regardless of the maintenance schedule).
The oil indicator must be checked at least once daily.
The oil indicator does not give information on the filter element changing interval.
➤ Check the oil indicator.
Indicator is blue: Replace both filter el oil level indicator.
10.9.4.3 Changing consumable parts
The fresh air filter contains two different elements which must be changed as a pair. Note location!
Using the fresh air filter without installed filter elements is not permitted!
Handle new filter elements only with clean fabric gloves. Do not touch the new filter elements
with bare fingers – Contamination risk!
Material Spare parts
Filter wrench
Wrench
Cleaning cloths
Clean fabric gloves
Precondition The machine has cooled down.
The «battery isolating switch» is turned off.
Ensuring the fresh air filter is depressurized
➤ Open the fresh air filter drain tap to release any remaining pressure.
Changing the lower filter element (high performance element)
1. Unscrew the lower housing counter-clockwise.
2. Draw the filter element down 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.
10 Maintenance
10.9 Maintenance for Optional Items
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
159
