Servicing Instructions; Burner And Gas Control Assembly; Preparing The Boiler For Servicing - Potterton Profile 30e Installation And Servicing Instructions

SERVICING INSTRUCTIONS - Page 21
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 per year should be adequate.
It is the law that all gas appliances are installed and serviced
by competent persons as stated in Gas Safety (Installation
and Use) Regulations 1994.
For Health and Safety information see back page.
Electrical installation and servicing should be carried out by
a competent person in accordance with the I.E.E. Wiring
Regulations.
Servicing is best arranged by a contract placed with
Potterton Myson Limited and further details are available
from Service Enquires - see back page.
The boiler DATA PLATE and WIRING DIAGRAM are
attached to the inside of the controls cover. The boiler CODE
NUMBER which should be quoted when ordering spares or
requesting information is on the front of the control box. See
FIG. 2.
All parts likely to require servicing are readily accessible. By
removing the cover from the boiler controls and removing the
front door from the boiler, most components are exposed.
Remove the front of the combustion chamber to gain access
to the main and pilot burner and the ignition electrode.
Removal of the fan and its mounting plate exposes the flue
system, i.e. the flue elbow and fluehood. These must be
removed to gain access to the flueways in the heat
exchanger for cleaning.
The following notes apply to the boiler and its controls but it
should be remembered that attention must also be paid to
the heating circuit itself including radiator
FIG. 29 BURNER AND GAS CONTROL ASSEMBLY
Supplied By www.heating spares.co Tel. 0161 620 6677
valves, thermostats, the time control and the expansion and
feed water system. It is advisable to clean the boiler
immediately after the end of the heating season.
In all cases prior to servicing, light up the boiler and check
that the pilot and main burners have a clean, even flame and
that the gas rate and main burner pressure are correctly set.
If the pilot flame is satisfactory, no further servicing of the
pilot burner is necessary and the information given in '3.
PILOT BURNER' can be ignored.
WARNING
Before the start of any servicing work, switch off at the
external electricity supply by disconnecting the supply plug
at the socket or switching off the external isolating switch.
Turn off the gas service cock.
NOTE: After completing any servicing or replacement of
components check for gas soundness and carry out
functional checks.

1. PREPARING THE BOILER FOR SERVICING

See FIG. 14.
NOTE: Boilers with side or rear flues have a flue elbow
fitted to the fluehood.
The elbow is replaced by an adapter on vertically flued
boilers.
A. Remove controls cover by opening the door
covering the securing screw on the underside of the
controls cover, see FIG. 14. Undo securing screw,
pull controls cover forward 10mm, lower it to release
it from its four side fixings and pull forward clear of
the thermostat knob.
B. Remove door by undoing the lower fixing screws
and lift door off the two upper hinge brackets.