Endress+Hauser Cleanfit CPA871 - Page 47

Cleanfit CPA871 Operation
Endress+Hauser 47
Use a pneumatic pilot valve (4/2-way or 5/2-way) to insert/retract the assembly.
‣
Connect the two inputs.
 If only one input is connected (e.g. for test purposes), the piston is blocked as the
sensor guide moves before the limit position lock is disabled.
Inserting/retracting the assembly if the compressed air supply fails
1
2
A0030306
 32 Failure of compressed air supply
1 Limit position lock for service position
2 Limit position lock for measuring position
L
CAUTION
Risk of injury due to high medium pressure
‣
Depressurize the system.
If the compressed air supply fails, you can still move the assembly manually. Proceed as
follows here:
1. Use an open-ended wrench (AF 17 mm) to unscrew both limit position locks (item 1
and 2).
2. Move the assembly to the desired position.
3. Screw the limit position lock back in.