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4 - Servicing & Maintenance
•
If the balanced flue is dismantled for any reason and
the flue seals disturbed, new seals must be fitted.
Refer to the Parts Catalogue for part numbers.
Servicing
•
To maintain the boiler's high thermal efficiency and
reliable operation, it should be serviced annually by a
qualified engineer preferably OFTEC trained and
registered. If Gas Oil is the fuel two visits per year are
advised.
•
Operate the boiler and system. Note any faults which
may need to be corrected during the service. It is
advised that a set of combustion results are first
obtained before undertaking any work.
•
Switch off the electricity supply at the main isolating
switch to the boiler. Turn off the fuel supply.
•
Pull off front cover and disconnect the burner oil
pipe(s), flexible air tube and burner plug, refer to
the Burner Information Instructions.
•
Remove expansion vessel assembly and lay to one
side (where fitted).
•
Undo burner retaining nut and withdraw burner from
boiler, remove combustion head. Clean combustion
head, making sure all slots and holes are clean. Clean
ignition electrodes, examine for signs of damage.
•
Remove nozzle and replace with one of identical
type. Under no circumstances should the nozzle
be stripped into component parts and never
attempt to clean the nozzle tip.
•
Remove burner cover, pull out and clean photocell.
•
Remove air intake assembly and right hand side of
fan casing and check impeller for deposits - clean
blades as necessary.
•
Remove end cap from oil pump and take out filter. Wash
clean with kerosene and replace. (Caution - the oil
pump contains a small amount of fuel, which will be
released, when the end cap is removed).
•
Re-assemble burner and check dimensions, refer to
Burner Information Instructions. Note: Check all seals
and replace if damaged.
•
Remove access door on front of boiler, remove
retarders and baffle plate (not 45/50) noting their
positions. Brush off all deposits, if they show signs of
damage replace.
Part No. 5102478
•
Examine interior of boiler and if necessary clean.
Remove any loose debris from the combustion
chamber.
•
Check the condition of the refractory base and repair
any minor cracks with fire cement.
•
When satisfied refit retarders and baffle plate (not 45/
50) and refit access door making sure that seals and
gaskets are correctly fitted.
•
Refit burner to boiler, connect flexible air tube, oil
pipe(s) and refit burner lead.
•
With all controls calling for heat, turn on fuel and switch
on electricity. Allow burner to run for several minutes
and then carry out combustion tests, refer to the Burner
Information Instructions and if necessary, adjust to
obtain best results.
•
On completion of combustion tests, replace front cover
and expansion vessel assembly (where fitted).
Note: It is advisable to replace flexible fuel pipes
every five years.
Maintenance
•
To ensure trouble-free heating and hot water, it is most
important that the boiler and burner are correctly
serviced.
•
This is best carried out by entering into a Service
Contract with your Installer.
•
Conditions of operation will vary, but with normal usage
the following is strongly advised:
At the end of winter
•
Switch off main switch.
•
Close all stop valves in the oil supply pipes.
•
Clean the flueways and all inside surfaces of the
boiler.
•
Clean flue and chimney.
•
Clean all boiler internal surfaces.
At the end of summer
•
Isolate elctrical supply to the boiler.
•
Switch off main switch.
•
Close all stop valves in the oil supply pipes.
•
Clean the flueways and all inside surfaces of the
boiler.
•
Clean flue and chimney.
•
Clean all boiler internal surfaces.
Also,
•
De-sludge the fuel tank(s)
There should be a sludge valve fitted to the tank(s).
•
Replace/clean cartridge in main filter
If a paper microbic cartridge has been in service
Servicing & Maintenance
39
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