Crane KROMBACH 510, Инструкция по эксплуатации и техническому обслуживанию, Страница: 9 / 15

Tilting Disc Type Check Valves
Date:
prepared:
approved:
Page: 22.03.2005
C.Wied
H.Six
8 of 14
Operating instruction No.:
BUW-510/1-E
9. Troubleshooting guide
It is essential to observe the Safety Instructions in Section 3 when rectifying faults.
Nature of fault Action
Leakage on the bearing cover
Tighten screws.
If this does not rectify the leakage:
repair may be necessary - replace gasket. Observe the
instructions in Section 3.3 “Special hazards”. For repair
instructions, see Section 11.2.
Leakage in the seat sealing
Check whether the armature is 100% closed.
If the valve is in the closed position and
if the valve then still leaks:
repair may be necessary; replace the lamellar sealing.
Observe the instructions in Section 3.3 “Special hazards”.
Leakage at the shaft sealing
Tighten the two screws on the stuffing box retainer
alternately and in small steps each of ¼ of a revolution
clockwise.
If this does not rectify the leakage:
repair may be necessary; replace the shaft sealing. For
repair instructions, see Section 11.3.
If the nuts on the stuffing box retainer must be loosened
or unscrewed (counterclockwise):
Danger to life!
To prevent the operating personnel becoming
endangered, ensure that the pipeline on both sides of the
armature is made completely free of pressure in advance.
Observe Section 3.3 “Special hazards”.
Functional fault
oil brake closes too fast
- close more the throttle valve
- throttle valve might be damaged
- check the oil level (might be leaky, air in the
cylinder)
Functional fault
oil brake hardly to move
- check the oil type for working pressure
- piston rod damaged
Functional fault
actuator / actuator parts
(if requested)
Check drive unit and control commands.
If the drive and control system are in order:
deinstall the armature (observe the instructions in Section
3.3 “Special hazards”) and inspect it.
If the armature is damaged:
repair may be necessary; obtain replacement parts and
any help that may be necessary from KROMBACH.
Corrosion
If it is established after deinstallation that the housing
and/or the interior parts are not sufficiently resistant to the
medium, select parts of a suitable material.