Owner's manual

Installation and Operating Manual
Series KA-N, KAP-N, ball and stem
9520-067-en Revision 00
TM 6404 MPE/Wm
Page 9 Edition 02/2006
8 Malfunctions
 Flange connection valve/pipe is leaking
Retighten the flange screws to a tightening torque
according to Section 1.2
. If this does not remedy
the leak, the recommended torques may be ex-
ceeded by 10%.
If this also fails to stop the leak, dismantle and
inspect the valve.
 Flange connection main body/body end piece is
leaking
Retighten body screws. See paragraph "Flange
connection valve/pipe is leaking".
 Packing is leaking
Retighten packing nuts according to the details in
Section 1.2
.
 Ball valve does not operate
Is the actuator being supplied with power?
Is any directional control valve connected cor-
rectly?
Is there any foreign matter in the bottom drain ball
valve?
 The ball no longer closes completely
Is the stem deformed?
I
s the coupling worn?
With a worm gear or actuator, check whether the
end stops can be re-adjusted. The operating
manuals of the gear and actuator manufacturers
contain accurate instructions.
Never apply force to the lever or use an
extension.
1. Try to get the bottom drain ball valve working
again by moving the lever to and fro.
2. Remove the lever stop and try to switch against
the normal direction of rotation.
3. If activation is not possible with the max. admis-
sible breakaway torque as per Section 1.3
,
dismantle bottom drain ball valve and inspect
individual components.