Isolate Mains Power to appliance as per TOPs P4
Water OFF
Water OFF
Measurement:
Remove flow restrictor from outlet port of the flow switch and inspect for signs of damage and or blockages.
Reconnect flow switch WITHOUT flow restrictor in position.
Turn on water and check flow rate at hot tap. Is a flow rate of 9.2 l/min or above obtainable?
If flow rate is obtainable, then the flow restrictor is faulty - FAIL this test.
If flow rate is not obtainable - PASS this test.
Replace restrictor after test.
Reconnect flow switch WITHOUT flow restrictor in position.
Turn on water and check flow rate at hot tap. Is a flow rate of 9.2 l/min or above obtainable?
If flow rate is obtainable, then the flow restrictor is faulty - FAIL this test.
If flow rate is not obtainable - PASS this test.
Replace restrictor after test.
Isolate as per TOPs P4
and refit as necessary