UNI Geräte 40-EVS Series, Operating And Mounting Manual

Page: 8 / 19

Operating and mounting manual (translation)
EVS
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220.100.022-10 page 8 /19 edition 10/2013
TM 3300
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
Valve does not close Connected voltage too high Check whether there is residual voltage,
see section 4.1
Flange fracture (valve/
pipework) Screws not tightened uniformly, mating
flanges not aligned Align pipework.
Install new valve
NOTICE!
Observe section 10.0 before all installation and repair work!
Observe section 6.4 when putting the valve back into operation!
8.0 Dismantling of the Valve
In addition to the general installation guidelines and the operation safety order, the following points
must also be observed:
DANGER!

Depressurised pipework system

Cooled medium

Emptied installation

Vent pipework systems containing corrosive, inflammable, aggressive or toxic
media

Have dismantling work carried out only by qualified staff (see point 2.3)
8.1 Replacement of Wear Parts
Shut down the valve as described in section 6.2.
Switch off and dismantle the solenoid drive as described in the operating manual of the solenoid drive.
DANGER!
After continuous operation, the solenoid drive may be hot! Danger of burns!
During the visual inspection, pay attention to the following points:
1. Damage to the valve seat (100).
2. Damage to the valve disc sealing (400)
3. Wear of the guide rings (206)
In case of damage to the valve seat, replace the whole magnetic valve.