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WARNING
Before the start of any servicing or
replacement of components always
isolate electricity supply to the appliance
and always turn off the appliance gas
supply at the gas service cock.
Data badge position-lower left hand front panel.
- The following notes apply to the appliance
and its controls but it should be remembered
that attention must also be paid to the
heating and hot water circuits with special
attention to radiator valves, thermostats,
clocks, leaking hot water taps etc.
- Where it is necessary to replace a gasket
that relies on adhesive for securing - this
adhesive will be supplied with the gasket
as a spare item.
- In all cases prior to servicing, remove
the front panel of the case.Operate the
appliance by turning the hot water services
on to a high water flow, measurement of the
products of combustion can be achieved
by connection of a probe to the combustion
analyser test point.
-
IMPORTANT:
After completing any
servicing or replacement of gas carrying
components it is essential that a test for
gas soundness is always carried out along
with functional checks in operation
7.2
TO INSPECT AND CLEAN THE
APPLIANCE
7.2.1
Before carrying out cleaning operation,
cover the electrical control panel with a
piece of waterproof material to protect it
from debris.
7.2.2
Drop down the control panel into the
service position
Unscrew the gas valve from gas pipe
inlet. Disconnect the gas valve electrical
plug at the gas valve.
Disconnect the electrical plug leads from
the fan.
Disconnect the electrode leads from the
electrodes
Remove the five combustion chamber
retaining nuts and gently remove the
fan,gas control valve, electrodes and
burner assembly from the combustion
chamber.(Fig.53)
7.2.3
Inspect the heat exchanger for any
blockage. Deposits of any material should
be brushed away using a soft brush.
NOTE:
Do not use brushes with metallic
bristles
7.2.4
Examine internal pipe-work connections
and automatic air vent for any water leaks
Rectify if necessary
7.2.5
Examine and remove loose debris from
combustion chamber using a soft brush
and vacuum cleaner. Carefully flush by
spraying water any remaining debris
through the condensate trap.(Ensure
the water is kept away from electrical
components)
7.1 SERVICING
7.1.1
To ensure continued efficient operation of
the appliance it is necessary to carry out
servicing and cleaning at regular intervals.
The frequency of cleaning will depend upon
the particular installation conditions and
usage but in general, once year should be
adequate.
Fig.53