GF DIASTAR 025 Manuel D'utilisation page 29

Operating Instructions
Diaphragm wears out prematurely
White discoloration on the upper part of
the housing
Control pressure too high
Function and connections for control
medium do not match
Actuator not selected to match medium
pressure
Dirty vent hole
Chemical damage
Pneumatic diaphragm valve DIASTAR 025
► Select the control pressure accor-
ding to the corresponding control
pressure diagram.
► Check the (FC, FO, DA) functions and
related connections.
► Select suitable drive type.
► Check and clean the vent hole on the
top part.
► Immediate diaphragm replacement
and all worn components under all
specified safety procedures.
29