32
Malfunctions
MalfuncTiOns
12.
Malfunctions
cause / remedial action
Actuator does not switch
Control connection interchanged*
CFA:
Connect lower control connection
→
CFB:
Connect upper control connection
→
CFI
Upper control connection: Close
→
Lower control connection: Open
* see
Figure 16: Pneumatic connection
Control pressure too low
See pressure specifications on the rating plate.
→
Medium pressure too high
See pressure specifications on the rating plate.
→
Valve is not sealed
Medium pressure too high
See pressure specifications on the rating plate.
→
Control pressure too low
See pressure specifications on the rating plate.
→
Flow rate reduced
PTFE diaphragm bulging
Replace diaphragm.
→
english
Type 2030, 2031, 2031 K, 2032,
2033, 2037