Ambirad VISION COMPACT VC20 Manual de operação, manutenção e assistência técnica - Página 13

Procurar online ou descarregar pdf Manual de operação, manutenção e assistência técnica para Aquecedor a gás Ambirad VISION COMPACT VC20. Ambirad VISION COMPACT VC20 19 páginas. Gas fired radiant tube heaters

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Burner head, Injector and Electrode
assembly
Figure 20
Remove the screws securing the combustion
chamber cover. Lift off thelid and gasket
checking the gasket for signs of splitting,
and replace on re-fit as required.
Figure 21
Using a screwdriver through the holes in the
burner head, slacken then unscrew the
burner head.
Figure 22
Slacken with a spanner, then unscrew the
injector from its carrier. If servicing the
injector, blow through orifice, never drill or
broach out or use wire to clean. Replace if
blocked.
Replace burner head and injector if
necessary and re-fit components in reverse
order of removal.
Electrode assembly
Figure 23
Remove the air grille or ducted air
attachement from the side of the burner
assembly.
Figure 24
Remove the screws securing the electrode
assembly to the side of the burner assembly.
Examine the electrode assembly and if in
not good condition replace as necessary by
removing the screws as indicated and
disconnection of leads from wiring harness.
On service or replacement of the electrode
assembly check the spark electrode gap is
3.5mm = or -0.5mm.
Gas valve
Follow instructions for replacment of burner
head and injector then proceed as follows:
Disconnect connectors on gas valve from
wiring harness and remove silicon tube.
Figure 25
Remove the four screws securing the gas
valve to the burner assembly. The gas valve
can now be replaced.
After re-fitting in reverse order of removal,
and prior to fitting the controls cover,
ensure all joints are gas tight, and set burner
pressure to that indicated on the data
badge.
Vacuum switch
Figure 26
Disconnect the two silicon rubber tubes and
the electrical connectors.
Figure 27
Remove the vacuum switch bracket screws
the unscrew pressure from the bracket.
Re-fitting in reverse order of removal, then
ensure connections are made as indicated in
the diagram below.
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