GF DIASTAR Six Manuel D'utilisation page 60

Instruction Manual
Valve does not perform
specified stroke or
even does not close or
open
Leakage of medium at
the indicator pin
Leakage of medium at
the vent
Premature wear of
diaphragm
58
Control pressure is
not selected
correctly
Function and
connections for
control medium are
not compatible
Defective aeration
and deaeration line.
Wear of diaphragm
and/or sealings
Wear of diaphragm
and/or sealings
Incorrect control
pressure
Function and
connections for
control medium are
not compatible
Valve is not chosen
according to the line
pressure
Dirty vent hole
Troubleshooting list
 Check control pressure.
 Check connections and suitable
mode of function (FC, FO, DA)
 Check function of aeration and
deaeration line.
 Replace sealings on the spindle
and piston.
 Replace diaphragm.
 Replace sealings on the spindle
and piston.
 Check control pressure
 Check connections and suitable
mode of function (FC, FO, DA)
 Check size of actuator
 Check and clean if necessary
deaeration drill on the
intermediate piece.