Powrmatic Air Heater NV15-F

Disconnect all electrical connections

Enter the number of PCB mounting posts to be released

Release the PCB from each mounting post

Remove the PCB from its mounting posts

Fit replacement PCB in reverse order

Remove the burner assembly as described in Section 7.2

Disassembly of Burner Components

Remove the end plates of the burner assembly

Remove the central burner support plate

Reassemble components in reverse order

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 the electrical connections to the centrifugal fan section

Remove the side panels of the section for access to the fan and motor

Fit replacements as appropriate

Is a 3-phase motor being replaced?

Is the direction of rotation correct?

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