26
SERVICING
Classic
Slimline FF
-
Installation & Servicing
3.
Pull the HT lead connection off the printed circuit board and
pull the lead upwards through the bottom panel grommet.
4.
Remove the 4 screws retaining the air box/pilot assembly
to the vertical manifold and carefully remove the assembly.
51 BURNER AND AIR BOX REMOVAL
1.
Remove the screw retaining the front burner support strap
to the combustion chamber. Remove the M5 pozi situated
at the LH bottom rear of the burner and pull the burner
downwards to disengage the retention tab. Remove the
burner to a safe place for inspection and cleaning.
2.
Remove the control box fixing screw. Pull the box forward
and downward to disengage.
To ensure the continued safe and efficient operation of the
appliance, it is recommended that it is checked at regular
intervals and serviced as necessary.
The frequency of servicing will depend upon the installation
condition and usage, but should be carried out at least annually.
It is the law that any service work must be carried out by
CORGI registered installer
.
a.
Light the boiler and carry out a pre-service check, noting
any operational faults. Operate the boiler for at least 20
minutes. Check the gas consumption.
b.
Connect a suitable gas analyser to the sampling point on
the top RHS of the back panel. For correct boiler operation
the CO/CO
2
content of the flue gas should not be greater
than 0.004 ratio. If this is the case and the gas input is at
least 90% of the nominal, then no further action need be
taken. If not, proceed to paragraph
c
.
c.
Clean the main burner. Refer to Frame 51.
d.
Clean the heat exchanger. Refer to Frame 50.
e.
Clean the main and pilot injectors. Refer to Frame 51.
49 SCHEDULE
f.
Remove any debris from inside the base of the casing.
g.
Check that the flue terminal is unobstructed and that the flue
system is sealed correctly.
h.
If the appliance has been installed in a compartment, check
that the ventilation areas are clear.
The servicing procedures are covered more fully in Frames 48 to
52 and must be carried out in sequence.
WARNING.
Disconnect the electrical supply and turn off gas supply.
IMPORTANT.
After completing the servicing or exchange of
components always test for gas soundness and carry out
functional checks as appropriate.
When work is complete the casing MUST be correctly refitted,
ensuring that a good seal is made.
T
he boiler must NOT be operated if the casing is not fitted.
Note.
In order to carry out either servicing or replacement of
components, the boiler casing must be removed. Refer to Frame 48.
1.
Open the controls pod door and release the 2 captive screws
at the bottom of the casing. Swing the bottom of the boiler
casing out until the controls pod casing has cleared the
controls, then unhook the casing top from the pack panel.
Retain the casing in a safe place. Where the removal of the
casing is impaired by a pelmet, the instruction in Frame 2
should be followed.
2.
Isolate the gas supply at the service cock fitted to the boiler.
50 BOILER CASING REMOVAL
SER
VICING
