GF CONTAIN-IT Plus Instruction Manual page 45

Troubleshooting list
Leakage between valve
body and union nut
connection
Leakage at seat
Sluggish valve
Leakage of control
medium on the non
connected air
connections
Valve does not perform
specified stroke or
even does not close or
open
Union nut is not
tightened properly
Preload is incorrect
Wear of ball and/or
stem
Wear of sealings
Control pressure is
not selected
correctly
Function and
connections for
control medium are
not compatible
Defective aeration
and deaeration line.
Instruction Manual
 Screw union nut tight
 Tighten the union nut
 If necessary replace functional
parts.
 Replace sealings and if
necessary the functional parts.
 Check control pressure.
 Check connections and suitable
mode of function (FC, FO, DA)
 Check function of aeration and
deaeration line.
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