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12.3 Maintenance
Depending on the outcome of the inspection, (preventative) maintenance should be considered.
Reasons may be:
ref. a.
Comments and notes from the customer should be taken seriously and an effort should be made to
find the cause of any deficiencies and problems.
ref. b.
The pressure of the system should be set between 1 and 6 bar: find possible leaks in the system and
have these fixed.
ref. c.
Any leakage must be repaired.
ref. d.
Flue: Find the cause of any water leakage from the air supply (possible cause from the roof
surface). Check the concentric flue and trace any leaks in the flue gas discharge and rectify.
ref. e.
Rinse if the condensed water from the siphon is badly contaminated. Several options are available.
1.
If the burner has already been removed: using a filling hose, pour water into the heat
exchanger (it will eventually reach the siphon).
2.
Adjust the drain line up (if possible) allowing the water to flow to the drain of the boiler.
ref. f.
Act upon the findings from the service screen using the service program or a laptop computer (if
used). and change any parts that may be the cause of these faults,
ref. g.
See under h.
ref. h.
Adjust the gas setting at the gas safety valve, as necessary, under minimum output.
ref. i.
If the CH pump has become noisy (certainly when the pump has been working for more than five
years) it is recommended to replace the pump motor as a precaution.
ref. j.
Never clean the burner itself it is not required If dirt has built up on the inside of the heat exchanger
and/or scale has formed on the inside of the stainless steel pipes, it should be removed using a hard
brush and citric acid
do not use a steel brush!
Always vacuum any dirt away.
ref. k.
If deposits have built up on the fan blades, carefully clean the blades one by one until the blades are
clean again. Work consistently in cleaning the blades, or else the fan may run irregularly and get out
of balance.
ref. l.
Carefully bend the electrode until the gap is correct 4 to 5 mm or replace (see page 44)
13 INSTRUCTING THE USER
Show the user how to operate the entire system. Above all, the user should be made familiar with all safety
precautions. The user should be told that service and maintenance of the central heating boiler is required
every 12 months or more. Regular service is essential for the safe operation of the boiler. Hand the user the
documents supplied with the S-CB boiler.