38
12 Servicing
Diagram 12.1
Important Notes
To ensure the continued efficient and safe operation of the
boiler it is recommended that it is checked and serviced at
regular intervals. The frequency of servicing will depend upon
the particular installation and usage, but in general once a
year should be enough.
It is the Law that any servicing is carried out by a competent
person.
When replacing a part on this appliance, use only spare parts
that you can be assured conform to the safety and perform-
ance specification that we require. Do not use reconditioned
or copy parts that have not been clearly authorised by Glow-
worm.
12.1 General
Measurement of the products of combustion can be achieved
by connection of a probe to the combustion analyser test point
on the flue elbow, see diagram 12.3 and section 12.6.
IMPORTANT NOTE:
Products of combustion will be dis-
charged when the cap is removed. It is important to replace
the cap immediately.
Testing Flue Gases: If any doubt exists that the flue prod
-
ucts are not exhausting correctly, investigate by use of a gas
analyser (FGA).
Before commencing with a service or replacement of parts
the boiler should be isolated from the electrical supply and the
gas supply should be turned off at the gas service cock, see
diagram 12.1.
All routine servicing requirements can be achieved by the
removal of the front panel. Remove the two screws on the
underside of the front panel and lift off.
For access inside the appliance a Torx T20 drive is required
or alternatively a flat blade screwdriver can be used.
Unless stated otherwise any part removed during servicing
should be replaced in the reverse order to removal.
Servicing should always include the removal of any debris
from the condensate pipe and siphon.
After completing any servicing of gas carrying components,
ALWAYS test for gas soundness and carry out a functional
test of the controls.
12.2 Flue Hood
Pull the flue hood securing clips away from the flue hood
sump and push flue hood up slightly towards flue hood top,
see diagram 14.6.
To remove swivel flue hood 90
0
and pull down and out to-
wards front of boiler, see diagram 14.7.
Check seal for wear or damage and replace if necessary.
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