Use period |
Failure
phenomena |
Possible
reason |
Troubleshooting |
| During installation and commissioning |
The valves cannot all be opened, but the leading part does act.
|
Check the gas dome pressure to see if it is too low. |
Check the leakage. |
| Some valves do not work, but the others are normal. |
Check the valve coil connection and coil. |
Replace the accessories. |
The valves cannot all be closed. There is leakage. There is no way to establish a gas dome.
|
Y-valve. Some valves for the same gas dome are leaking, thus causing leakage for all the valves.
|
Check the leakage. |
Z-valve. The valve inlet and blowing muzzle are installed backwards.
|
Re-install. |
| Some valves cannot be closed. There is leakage. |
There is some dirt or debris on the membrane, it is blocking the moving iron core. |
Clean the membrane and check that the membrane is complete. Check the moving iron core and air lock. |
| A valve closing is slowly. |
The membrane orifice is blocked. |
Dredge the membrane orifice. |
| During use period |
Some valves are leaking. The membrane cannot close tightly and the valve is always open a little. |
There is some dirt or debris on the membrane, the leading part is damaged. Moving iron core is blocked. |
Clean the membrane and check that the membrane piece is complete. Check the moving iron core and the air lock. Replace the accessories if necessary. |
| Coil is hot and burned out. |
It has been turned on for too long. |
Check the working condition of the control system. |
| Voltage exists but the valve does not operate. |
Membrane is damaged and the orifice is blocked. |
Replace the accessories in time. |
Ambient temperature is below -20C°. The valve is leaking and cannot open.
|
Ambient temperature is too low and there is frost in the valve. |
Pay attention to insulation and maintaining proper temperatures. |
