IM-S51-09
CTLS Issue 1
2
SP7-10, SP7-11, SP7-12, SP7-20, SP7-21, SP7-22 and SP8-10
Replacing the filter element
The digital positioner is equipped with a supply air filter that can collect small amounts of contaminants.
The supply air filter prevents the digital positioner’s sensitive pneumatic components becoming clogged or
damaged.
Note
The supply air filter is not a substitute for the required supply air treatment in accordance with DIN/ISO
8573-1. If the supply air is contaminated, the supply air filter can become clogged and must be replaced.
Fig. 1 Note SP8-10 shown for reference.
Risk of injury from pressurized components
The screw plug and the filter insert can be ejected if the screw plug is loosened when the
pressurized air is switched on.
Only ever loosen the screw plug when the positioner is depressurized and vented.
Filter insert
Screw plug
Filter element (sieve) in the supply air inflow
1
2
3
3
1
2
Replacing the supply air filters
