Operating and mounting manual
(translation)
EV / EVF
_______________________________________________________________________________________________________
220.100.091-05
Page 8 /21
Version: 06/2017
TM 4474
6.1 Commissioning
Before commissioning, check the data on material, pressure, temperature and flow direction
with the layout plan of the pipework system.
Depending on the field of application, the local regulations have to be observed, e.g. the
operation safety order.
Residues in the pipework and the valve (dirt, weld beads, etc.) will inevitably result in leaks.
Leakage inspection of the installed valve.
6.2 Shutting
down
Depending on the field of application, the local regulations have to be observed, e.g. the
operation safety order.
6.3 Maintenance
Solenoid valves have to be checked at regular intervals for proper function and internal leak tightness.
The intervals for regular inspections have to be defined by the operator according to the operating
conditions. UNI-Geräte recommends an internal visual inspection once a year and an overhaul of the
valve after 2 years or after the following number of switching cycles at the latest:
Application
temperature
DN
≤
25
≤
DN 80
≤
DN 150 > DN 150
≤
25°C
150 000
75 000
25 000
20 000
> 25°C
50 000
25 000
25 000
5 000
6.4
Putting back into operation
When putting a valve back into operation, ensure that all the necessary steps described in section 5.2
(Installation) and section 6.1 (Commissioning) are repeated.
7.0 Troubleshooting
7.1 Detection
of
defects
DANGER!
Be sure to observe the safety instructions during troubleshooting.
If the malfunctions cannot be remedied using the following
“Troubleshooting plan (7.2)”
please
contact the manufacturer.
In the event of faults in the function or operating behaviour of the valve, check whether the installation
work was carried out and completed as described in this operating manual.
Depending on the field of application, the operation safety order must be observed.
Check the data on material, pressure, temperature, voltage and flow direction with the layout plan of
the pipework system. In addition, check whether the operating conditions correspond to the technical
data in the data sheet or on the rating plate.
7.2 Troubleshooting
plan
Malfunction Possible
causes
Remedy
No flow
Valve does not open
Switch on solenoid drive (800)
Check operating voltage
Working pressure too high
Compare working pressure with the data
on the rating plate
Flange covers were not removed
Remove flange covers
Low flow rate
Clogging in the pipework system
Check pipework system
Valve leaking at seat,
no internal tightness
Valve seat gasket (400) or valve seat
(100) damaged by external particles
See section 8 or replace valve
No external tightness Gaskets damaged
See section 8 or replace valve
