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(c) Instruct on the safety features of the
heater.
(d) Hand over to the end user a copy of
the ‘User Instructions’ complete with
a copy of the commissioning sheet.
(e) Advise on the need for regular
servicing of the equipment. In
particular that the fan belts will
require tensioning after the first 100
hours of running.
6.0
Instructions for Servicing
Servicing should be carried out on a
regular basis (minimum once a year) by a
suitably qualified engineer or fully trained
competent personnel. More frequent
servicing may be required dependent upon
the environmental circumstances where
the air heater is installed. Regular
inspection is necessary, especially in dirty
areas. Failure to undertake this servicing
could lead to premature failure of various
components and invalidation of the
warranty for individual parts or the heater
as a whole.
Only approved spares or replacement
parts may be used. Failure to comply with
requirement could lead to an unsafe
condition within the heater and invalidate
any warranty claim.
Reference should also be made to the
appropriate burner manual accompanying
this manual before the commencement of
any work.
For safety reasons no service should
commence before isolating both the
electrical and gas supplies to the heater
and the heater has been allowed to cool
down until the heat exchanger is
completely cold.
6.1 Frequency
In order to maintain a safe, reliable and
efficient operation of the heater we
recommend that the following planned
service maintenance programme is
adopted by the end user.
First 100 hours of use:-
Inspect fan belts and retention if required.
After 3 months:-
(a) Visual inspection of outer panels
(b) Visual inspection of burner
(c) Clean and check position of
ionisation and ignition probes.
(d) Check operation of burner lock-out.
(e) Check operation of safety overheat
and device.
After 6 months:
(a) Same as after 3 months
(b) Carry out check on all combustion
readings.
Annual inspection
(a) Same as after 6 months
(b) Heat exchanger inspection and
cleaning.
(c) Burner
maintenance.
(d) Main fan and motor.
(e) Pulley and belts.
(f) Flue.
system
(g) Control panel and electrical connections.
(h) Gas supply connections.
6.2 Procedures
Heat Exchanger
a) Access to the heat exchanger is made via
the top rear panels, i.e. the panels
opposite to the burner. Loosen the 8 hex
head screws on the back panel of the
heater and remove the panel.. The rear
panel and heat shield can now be lifted off
The cover plate over the end assembly will
now be exposed and can be removed by
undoing the brass nuts around the
periphery of the cover, thus exposing all
the heater exchanger tubes.
Attention :
For safety reasons it is forbidden to
remove the explosion relief panel and
its 4 bolts and springs.
Inspect for deposits and clean, using a
strong flue brush suitable for 51mm
diameter tubes. The loose deposits can
now be vacuumed up using an industrial
vacuum cleaner. During the inspection of
these parts the deposit can also be
vacuumed out.
b) Remove the burner to inspect and clean
the combustion chamber.
The whole of the heat exchanger and
combustion chamber should be given a good
inspection ensuring there are no slots, cracks
or severe distortion.
If the condition of
either the heat exchanger or the
combustion chamber gives cause for
concern please notify the end user and the
Ambi-Rad UK Limited Service Department
immediately.
Replace access cover plate ensuring the new
gasket material is used. The outer panels can
also be replaced
Retighten the hex screws on the top of the
heater.
When removing side panels (qty 2 for models
30
→
120 & qty 4 for the models 140
→
250) be
aware that the inner skin plate of the side
panels has a 90° air deflector being very
important for the good operation (efficiency) of
the heater. Be careful not to remove or
damaging the air deflector. The location of the
fixing holes in the side panels ensures an
exact position of the air deflector even after
removing the side panels.
Burner Maintenance
Remove the burner from the heater and carry
out the following procedures:-
(a) Clean burner head with a stiff brush,
removing any deposits.
