Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Boiler drained and discharged
Observation:
Remove non-return valve, located at bottom left of the boiler inside the flow pipe.
Check non-return valve is not blocked or restricted.
Check that the non-return valve will open easily and that spring pressure will close the valve quickly and smoothly.
Check non-return valve is not blocked or restricted.
Check that the non-return valve will open easily and that spring pressure will close the valve quickly and smoothly.
Isolate as per TOPs P4
and refit as necessary