EN
WIKA operating instructions, shut-off valves and valve manifolds
14294094.01 10/2019 EN/DE/FR/ES
17
Models IV50, IV51
1. Close vent valves (red).
2. Open compensating valve (green).
3.
To avoid pressure surges, open the shut-off valves (blue) slowly.
The pressure is at the instrument connection now.
4. Close compensating valve (green).
6. Faults
The following table contains the most frequent causes of
faults and the necessary countermeasures.
Faults
Causes
Measures
Difficult handle
operation
Lubrication problem due to
unchanged valve position for a
long time period
Perform a functional test
as described in chapter
7.1
“
Maintenance
”
and
shorten inspection interval
as appropriate
Defective parts due to
corrosion, process conditions,
age
Replace product
Overtightened gland nut,
defective sealing packing
Replace product
Leakage at the
spindle
Leaking sealing packing
See chapter 7.2 “Repair”
5. Commissioning, operation / 6. Faults
