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45
SERVICING INSTRUCTIONS
Fig. 47
Fig. 45
Fig. 46
Fig. 48
A
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 19 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.
18.1 To Gain General Access
To ensure efficient safe operation, it is recommended that the
boiler is serviced annually by a competent person, refer to
Section 20 (page 53) for the Servicing Schedule.
Before starting any servicing work, ensure both the gas and
electrical supplies to the boiler are isolated and the boiler is
c
ool.
Before and after servicing, a combustion analysis should be
made via the flue sampling point.
A
fter servicing, preliminary electrical system checks must be
carried out to ensure electrical safety (i.e. polarity, earth
c
ontinuity, resistance to earth and short circuit).
IMPORTANT!
AFTER AN ANNUAL SERVICE, THE SERVICE INTERVAL RECORD (SECTION
25, P
AGE
60) M
UST BE COMPLETED
.
All testing and maintenance operations on the boiler require the
control panel to be lowered. This will also require the removal of
the casing.
18.1.1 Removing the front panel :
18.1.2 Lowering the control panel :
1. Remove the security screw and unlock the two case
locking catches A (see Figs. 45 & 46);
2. Remove the front panel from the rest of the casing (see
Fig. 47).
1. Remove the front panel;
2. Unlock the two clamps locking and pivot the electrical
box downward (see Fig. 48).
18. Replacement of parts