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To ensure continued efficient operation of the appliance, it is
recommended that it is checked and serviced as necessary
at regular intervals. The frequency of servicing will depend
upon the particular installation conditions and usage but in
general once a year should be adequate. It is the law that any
service work must be carried out by registered personnel.
Before commencing any service operation, ISOLATE the
mains electrical supply, and TURN OFF the gas supply at the
main service cock. Service the appliance by following the full
procedure detailed below.
5.1 MAIN BURNER ASSEMBLY
5.1.1 Model “FORMAT 34I BF” (fig. 15)
– Remove the casing.
– Remove the 8 fixing screws securing the sealed chamber
front panel then remove the panel.
– Unscrew the 7 screws securing the combustion chamber
front panel and remove the panel, taking care not to dam-
age the insulation.
– Remove the electrode by unscrewing it from the burner
manifold.
– Unscrew the burner manifold union and locking nut. Lift
the front of the burner to disengage manifold thread and
then lift the burner clear.
– Remove the burner manifold by disconnecting the four
screws.
– Inspect and if necessary, clean the injectors, electrodes,
and the main burner bars.
5.1.2 Model “FORMAT 34E BF” (fig. 15)
– Remove the rubber ring around the flue terminal.
– Remove two screws each side at the underside of the
casing.
– Pull the bottom of the case forward, to disengange the
lower location studs, and then lift straight up, to disen-
gange the upper location studs, and withdraw the casing
over the boiler
NOTE: Use the reverse of the above procedure to replace the
casing, taking care not to trap the wiring on the R.H. side.
5.2 FAN ASSEMBLY
– Disconnect the electrical connections to the fan. Note the
position of the earth conductor.
5 ROUTINE SERVICING INSTRUCTIONS
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