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Service
- Maintenance
Burner and boiler servicing must only
be carried out by qualified personell.
The system operator is advised to take
out a service contract to guarantee
regular servicing.
Attention
• Disconnect the electrical supply before
carrying out any maintenance or
cleaning work.
• The blast tube and firing head may be
hot.
Checking the exhaust gas temperature
• Check the flue gas temperature at
regular intervals.
• Clean the boiler if the flue gas
18
temperature is more than 30°C above
the value measured at the time of
commissioning.
• To simplify the check, use a flue gas
temperature indicator.
Maintenance on the burner
• Check gas supply components (tubes,
lines) and their connections for leaks
or signs of wear, replace if necessary.
• Check electrical connections and
connection cables for damage,
replace if necessary.
• Check gas filter, clean or replace as
necessary.
• Clean fan wheel and housing and
check for damage.
• Check and clean the mixing unit.
• Check ignition electrodes block,
readjust or replace as necessary.
• Start burner, check flue gas data,
correct burner settings if necessary.
• Check the setting for air pressure
switch and gas pressostat.
• Check the gas train settings.
• Carry out an operating check.
Removing of the filter
1. Switch-off the burner.
2. Loosen screw B and drain part of the fuel
from the heater, until the fuel level drop
below the filter.
3. Unscrew and pull out the stem filter A
from its seat.
4. Clean the filter and reassemble the parts
as shown by the picture, then fit it in its own
seat.
It is advisable to replace all filter and valve
gaskets whenever they are removed.
Note that when the burner is working the
heater has a pressure of abt. 23 bar, and
that it becomes very dangerous to carry out
said operations with the burner running.
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