Potterton Envoy Flowsure, Installation & Service Instructions Manual

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Servicing & Replacement of Parts
Publication No. 559779
22
5. Servicing & Replacement of Parts – Page 22
It is the law that all gas appliances are installed and serviced
by a competent person as stated in Gas Safety (Installation
and Use) Regulations 1994.
For Health and Safety Information see page 5.
Electrical test work and servicing should be carried out by a
competent person in accordance with the I.E.E. Wiring
Regulations.
Regular skilled servicing and cleaning of the appliance is
essential to ensure continued safe and efficient operation.
The frequency of cleaning will depend upon the particular
installation conditions, and the use to which the appliance is
put, but in general, once a year should be adequate.
The boiler DATA PLATE and WIRING DIAGRAM are located
on the front of the boiler functional casing.
The boiler code number which is on the code badge located
on the boiler top panel see FIG.2 should always be quoted
when ordering spares or requesting information.
Before commencing the servicing of the boiler it is
advisable to carry out a pre-check on the boiler to
establish that it is functioning correctly.
a) Set the boiler running to check its operation.
Note: If the boiler fails to start or does not follow the
sequence above then refer to fault finding section on
Page 29.
WARNING
Before the start of any servicing or replacement of parts
ensure that you have:
a) Switched off at the external electrical supply by
removing the plug from the wall socket or by switching
off the appliance at the external isolating switch.
b) Isolated the gas supply at the boiler service cock.
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Preparation of the Boiler
Preparation for servicing should be carried out in the
following manner.
1) Remove decorative outer casing doors by pulling the
bottom of the door from its fixing clips and pushing
upwards until it is clear of its top fixing.
2) Remove bottom decorative panel.
3) Remove functional case door by undoing the two lower
securing screws and lift door off the two upper hinge
brackets. FIG. 14.