ELEKTROGAS – Technical Sheet EE175 - 0117
15-16
To maintain a good performance of the system, almost once a year, an external
inspection of the valve is recommended.
Due to seals aging, to ensure safe operation, we recommend valve replacement after 10
years from the date of manufacture stamped on the product.
EXTERNAL INSPECTION
- Turn off all power before servicing any part of the system.
- Check the conditions of the plug. 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 actuator and verify that valve opens, then,
turn off power and check the closing function.
- Power the actuator, when valve is open, the pump stops (noise reduction). In normal condition
the pump doesn’t restart more than 3 times in 20 minutes. If the pumps restarts more frequently,
it is necessary to replace the actuator.
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.
- Using an Allen key, remove the screws (1) on the counter flange (2), in cross way. The gas
in the valve will come out during this step. Pay attention to the spring inside the valve: they
push the counterflange.
- Check the main O-ring(3). If it’s necessary, replace it with an identical one.
- Blow the assembly of counter flange – spring – disc (2) with compressed air. Check the
spring is corrosion free. Don’t try to disassemble it: this operation can be very dangerous.
- Check the conditions of the sealing gasket. 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 (4) and blow it with compressed air.
- Reassemble the valve following the inverse sequence.
When the reassembly is finished, verify the correct sealing between the counter flange and
the valve body:
- Open ball valve to restore pressure into the valve.
- Apply a soap solution between the counter flange and the valve body and check for
leakages.
Fig. 10