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7.
SERVICING INSTRUCTIONS
7.1.
R
EPLACEMENT OF
7.2.
T
G
G
O
AIN
ENERAL
F
. 7.1
IG
A
B
48
P
ARTS
A
CCESS
A
F
IG
To ensure efficient safe operation, the boiler must be serviced
annually by a competent person.
Before starting any servicing work, ensure both the gas and
electrical supplies to the boiler are isolated and the boiler is
cool.
Before and after servicing, a combustion analysis should be made
via the flue sampling point (please refer to Section 3.6.3).
After servicing, preliminary electrical system checks must be carried
out to ensure electrical safety (i.e. polarity, earth continuity,
resistance to earth and short circuit).
The life of individual components vary and they will need servicing or
replacing as and when faults develop.
The fault finding sequence chart in Section 8 will help to locate which
component is the cause of any malfunction, and instructions for
removal, inspection and replacement of the individual parts are given
in the following pages.
All testing and maintenance operations on the boiler require the
control panel to be lowered. This will also require the removal of the
casing.
To lower the control panel and remove the casing,
proceed as follows:
1. Remove the screws "A" (Fig. 7.1);
2. Loosen the four screws 'B' from the case hooks (two
at the top and two at the bottom) and rotate (Fig. 7.2);
3. Lift and unhook the case panel (Fig. 7.3);
4. Lower the control panel (Fig. 7.4)
. 7.2
F
. 7.3
IG
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