Powrmatic Air Heater NV60-D

Inspect the fan blades for damage and excessive deposits

Is it necessary to remove the assembly for cleaning?

Slacken the cable gland on the heater casing

Disconnect the fan leads from the electrical terminals on the PCB

Withdraw cable through entry grommet

Remove the fan and motor assembly by removing the four hexagon headed bolts

Disconnect the electrode leads from the PCB terminal

Remove the screw securing the electrode assembly to the burner assembly side plate

Withdraw the electrode assembly

Fit the replacement electrode assembly

Disconnect electrical connections

Pull off the sensing tube from the air pressure switch

Note the setting of the old pressure switch

Remove the screws fixing the air pressure switch

Installation of New Pressure Switch

Fit replacement pressure switch in reverse order

Remove the burner assembly as previously described in Section 7.2

Release the flanged connections at the inlet and outlet of the multifunctional control

Remove the multifunctional control

Reconnect the new valve ensuring correct orientation

Renew the sealing O-rings if necessary

Disconnect all electrical connections

Release the PCB from mounting posts

Remove the PCB from its mounting posts

Fit replacement PCB in reverse order