STT 110 / STT 160
5.2. Cleaning or Replacing the Air Filter
Set the release switch “Timer” at position:
L
Wait until the blower has stopped.
The run on time of the blower is 10 minutes.
If there is a return air cooler installed, switch off its coolant circuit.
L
&
Switch off the main switch of the dryer (the signal lamp “power” goes off).
Interrupt the mains supply so that the device cannot be switched on unin- tentionally.
Clogged filters substantially reduce the amount of circulating air and lead to a production lag of your dryer. Clogged filters may also damage the heating elements.
