17
Mynute 24m
SECTION 6 SERVICING INSTRUCTIONS
6.1
GENERAL
To ensure the continued safe and efficient opera-
tion of the appliance, it is recommended that it is
checked and serviced at regular intervals.
The frequency of servicing will depend upon the
particular installation conditions but, in general,
once per year should be adequate.
It is the law that any servicing work is carried out
by competent person such as Vokera engineer,
an approved service agent, British Gas or other
CORGI registered personnel.
The following instructions apply to the appliance
and its controls, but it should be remembered that
the central heating and the domestic hot water
systems will also require attention from time to
time.
6.2
ROUTINE ANNUAL SERVICING
•••••
Check the operation of the appliance and ensure
it functions as described in section 7. Compare
the performance of the appliance with its design
specification. The cause of any noticeable dete-
rioration should be identified and rectified with-
out delay.
•••••
Thoroughly inspect the appliance for signs of
damage or deterioration especially the flue sys-
tem and the electrical apparatus.
•••••
Check and adjust - if necessary - all burner
pressure settings (see section 7.3).
•••••
Check and adjust - if necessary - the system
design pressure (see section 5.10).
•••••
Carry out an analysis of the flue gases (see
section 7.4) and visually check the condition of
the entire flue assembly. Compare the results
with the appliance design specification. Any
deterioration in performance must be identified
and rectified without delay.
•••••
Ensure both flue venturis are clean and free from
any debris or obstruction.
•••••
Ensure both the burner and heat exchanger are
clean and free from any debris or obstruction.
•••••
Inspect all joints for signs of leakage and repair
if necessary.
•••••
Refer to the commissioning section and/or re-
placement of parts section for detailed instruc-
tion if required.
6.3
REPLACEMENT OF COMPONENTS
Although it is anticipated that this appliance will
give years of reliable, trouble free service, the life
span of components will be determined by factors
such as operating conditions and usage. Should
the appliance develop a fault, the fault finding
section will assist in determining which compo-
nent is malfunctioning.
6.4
COMPONENT REMOVAL PROCEDURE
To remove a component, access to the interior of
the appliance is essential. Isolate the appliance
from the electrical supply and remove the fuse.
And when necessary, close all service valves on
the appliance, remove the appliance casing as
described in section 4.7.1, drain the water content
from the appliance via the safety valve. Ensure
some water absorbent cloths are available to
catch any residual water that may drip from the
appliance or removed component. Undertake a
complete commissioning check as detailed in
section 5, after replacing any component.
AL-
WAYS TEST FOR GAS SOUNDNESS IF ANY
GAS CARRYING COMPONENTS HAVE BEEN
REMOVED OR DISTURBED.
