Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove pump cover / plug
Measurement:
Test 1:
Measure the resistance between pump live and neutral connections.
Resistance vary by pump but should be greater than 120Ω.
Resistance on ErP pumps will be significantly higher.
(Greater than 1MΩ or O.L.)
Test 2:
Measure the resistance between pump live and earth connections.
Resistance should be greater than 1MΩ (or O.L).
Note:
For other designs of pump please refer to instruction
manual for which connection is live / neutral / earth.
Measure the resistance between pump live and neutral connections.
Resistance vary by pump but should be greater than 120Ω.
Resistance on ErP pumps will be significantly higher.
(Greater than 1MΩ or O.L.)
Test 2:
Measure the resistance between pump live and earth connections.
Resistance should be greater than 1MΩ (or O.L).
Note:
For other designs of pump please refer to instruction
manual for which connection is live / neutral / earth.
Isolate as per TOPs P4
and refit as necessary