Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect the right hand tube(+ve) from the venturi and connect the air pressure switch charge kit.
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Note the operating pressure indicated on the pressure switch.
When the fan begins to run, increase the pressure via
the syringe to that indicated on the pressure switch.
Is sparking now visible at the electrodes?
Note:
If is still not observed it is permissible to
increase the pressure by 50%.
When the fan begins to run, increase the pressure via
the syringe to that indicated on the pressure switch.
Is sparking now visible at the electrodes?
Note:
If is still not observed it is permissible to
increase the pressure by 50%.
Isolate as per TOPs P4
and refit as necessary