ARI Armaturen BR015-ZIVA-G EN - Manual (Page 13)

Rev. 0040201000 0511 Page 13
Operating and installation instructions
ZESA
®
/ GESA
®
/ ZIVA
®
-Z / ZIVA
®
-G
8.0 Troubleshooting
In the event of malfunction or faulty operating performance check that the installation and
adjustment work has been carried out and completed in accordance with these Operating
Instructions.
If malfunctions cannot be eliminate with the help of the following table
“9.0 troubleshooting table”, the supplier or manufacturer should be consulted.
9.0 Troubleshooting table
-
ATTENTION !
It is essential that the safety regulations are observed when identifying faults.
ATTENTION !
- read point 10.0 and 11.0 prior to dismantling and repair work!
- read point 6.0 before restarting the plant !
Fault Possible cause Corrective measures
No flow Valve closed. Open valve.
Little flow Valve not sufficiently open. Open valve.
Strainer sieve clogged. Clean / replace sieve.
Piping system clogged. Check piping system.
Valve is impossible or diffi-
cult to open or close Service conditions (e.g. medium, tem-
perature) outside permissible limits. Replace valve. Consult supplier or
manufacturer.
Power failure. Check power supply.
Wrong direction of rotation. Turn in correct direction
(clockwise for opening).
Valve leaking Not properly closed. Close valve properly or readjust limit
switch/stop screw.
Pressure difference too high. Check plant.
Medium contaminated. Clean valve.
Install strainer sieve upstream of valve.
Lining/collars (Fig. 1-2, item 2) or valve
disc (Fig. 1-2, item 3) damaged by for-
eign bodies or medium Replace valve. Consult supplier or
manufacturer.
Valve with locking device
cannot be opened Locking device tightened. Slacken locking device.