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9.0 Annual Servicing – Page 35
9.1 Dismantling the Boiler
1. To ensure its continued safe and efficient operation, it
is important that the appliance is regularly serviced. (For
location of British Gas service test point
see Changing Components section of these instructions).
2. Before servicing the boiler please read
Section 1.3 Important Information.
3. Isolate the electrical supply to the boiler.
4. Remove the outer case lower door panel by following
the sequence of diagrams (Fig. 89).
5. Remove the outer case from the boiler by unscrewing
the two screws and lift the case clear (Fig. 90).
6. Release the four latches holding the combustion box
door (Fig. 91). Remove the combustion box door by
pulling forward from the bottom and unhooking its top
edge (Fig. 93).
7. Release the 5-pin electrical plug connecting the
pressure switch and fan (Fig. 92). Withdraw the fan
assembly by pulling forwards from the top edge (Fig. 93).
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