Ambirad COBRA CB40 Handbuch für Installation, Betrieb, Wartung und Service - Seite 13

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Electrode assembly
Figure 21
Remove the two screws securing the
electrode assembly. Disconnect the
leads, and remove. Check for cracked or
damaged ceramic. Clean or replace as
necessary. Re-fit components in reverse
order of removal. On service or
replacement of the electrode assembly
check the spark electrode gap is 3.5mm
+ or -0.5mm.
Burner head
Figure 22
Remove three screws. Clean or replace
as necessary.
Gas valve
Follow instructions for replacement of
burner head and injector then proceed
as follows:
Figure 23
Figure 24
Disconnect gas fittings, disconnect
wiring harness from valve. Remove
rear panel of burner box. Remove the
two screws securing the gas valve to
the panel and two screws securing
valve to burner box. Withdraw gas
valve. remove injector carrier. Replace
gas valve. Re-fit components in reverse
order of removal. For correct
operation follow instructions for
commissioning of heater.
Electronic sequence controller
Figure 25
Disconnect the electrical connector
from the controller to the wiring
harness and the ignition high tension
lead.
Remove the two screws and replace the
controller.
Re-fit in reverse order of removal
ensuring electrical connections are
made.
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