Elektrogas VMR Series User Manual

ELEKTROGAS – TECHNICAL MANUAL
13-13
EXTERNAL INSPECTION
- Turn off all power before servicing any part of the system.
- Check the conditions of the plug/box gasket. If gasket is deteriorated, replace it with a
new one.
- Check the electrical connections are clean, dry and correctly tightened.
- Check the conditions of pipe connections: cover them with a soap solution and check
for leakages.
- Check the proper operation of the valve: power the coil and verify that valve opens,
then, turn off power and check the closing function.
INTERNAL INSPECTION
Make this inspection when the valve does not work properly only.
To make an internal inspection of the valve, do the following:
- Shut ball valve upstream the system and make sure no pressure is inside the valve.
- Unscrew coil fastener cap (15) and remove the coil (13).
- Using an Allen key, remove the screws (10) on the upper flange (9), in cross way. The
gas in the valve will come out during this step.
- Check the main O-ring (8). If it’s necessary, replace it with an identical one.
- Clean the internal side of the stem (11) with a clean cloth and compressed air.
- Remove the spring (7) and blow it with compressed air. Check the spring is corrosion
free. Take attention to the assembly direction of the spring.
- Check the wear conditions of the sliding rings (6) and, if it’s necessary, replace them.
- Clean the plunger assembly (4, 5, 6) with a clean cloth and compressed air.
- Check the conditions of the sealing gasket (4). If gasket is deteriorated, replace it with a
new one.
- Clean the sealing lip with a clean cloth. Do not use tools, because a lip damage could
result.
- Remove the filter (3) and blow it with compressed air.
- Reassemble the valve following the inverse sequence.
When reassembling, take attention to the correct position of the spring.
When the reassembly is finished, verify the correct sealing between the upper flange and
the valve body:
- Open ball valve to restore pressure into the valve.
- Apply a soap solution between the upper flange and the valve body and check for
leakages.
- Remove the soap solution with a clean cloth, before to reassemble the coil.
WARNING
To prevent product damage and dangerous situations, read the Installation and
Service Instructions carefully.
Turn off all power before servicing any part of the system.
Perform leak and functional tests after mounting.
Use all gaskets properly (void warranty).
All wiring must be in compliance with local and national codes.
Make sure all works are performed by qualified technicians only.
Fig. 10

Elektrogas VMR Series Specifications

General

Brand	Elektrogas
Model	VMR Series
Category	Control Unit
Language	English