baltur TBL 45P, Инструкция по эксплуатации, Страница: 57 / 76

OPERATING DESCRIPTION
Switch on the main switch and the START / STOP switch of
the electrical switchboard for the DACA version (0002935510)
Voltage reaches the control box which then starts operating if the
thermostats are on.
This switches on the fan motor and the ignition transformer.
The fan motor starts fan rotation, which performs a wash with air in
the combustion chamber and, at the same time, the pump makes
the fuel circulate in the pipes, expelling any gas bubbles through
the return line.
This prewashing phase ends with the opening of the safety and 1st
stage solenoid valves, making it possible for the fuel to reach the
1st stage nozzle at a pressure of 12 bar and exit in the combustion
chamber finely atomised.
The fuel atomised by the nozzle, is set on fire by the spark present
between the electrodes immediately as the motor start.
During the ignition of the first flame, the combustion air output is
determined by the position in which the control hydraulic jack body
is fastened (0002935420).
If an air regulation servomotor is used, see the 1st stage cam
adjustment drawing 0002935210.
If the flame appears regularly, once the safety time foreseen by
the electric equipment has passed, it activates the 2nd stage
solenoid valve (closed, in stand-by).
If an air regulation servomotor is used, see the 2nd stage cam
adjustment drawing (0002935210).
The opening of the 2nd stage valve allows the fuel to reach the
second nozzle. At the same time, the piston that controls the
combustion air regulator, moves downward opening further the
regulator.
The piston stroke can be adjusted by turning the screw with the
lock nut. In this way the burner is fully operational.
Once the flame appears in the combustion chamber, the burner
is controlled and commanded by the photocell and by the
thermostats.
The control box continues the program and disconnects the
ignition transformer.
When the temperature or pressure in the boiler reaches the value
to which the thermostat or pressure switch is set, the burner stops.
Vice versa, if the temperature or pressure drops below the setting
values of the thermostat or boiler pressure switch, the burner re-
starts.If the flame fails for at least one second during operation,
the photocell trips and stops the relay power supply, leading to the
closure of the fuel shut-off solenoid valves.
The ignition phase is thus repeated and, if the flame reignites
normally, the burner will return to its normal operation. Otherwise,
the equipment will lock out automatically.
If the program is interrupted (due to a power failure, manual action
or the intervention of the thermostat, etc.) during the pre-wash
stage, the programmer returns to its starting position and will
automatically repeat the whole burner ignition sequence.
IMPORTANT
The LMO 44 device goes into lock-out after repeating the
ignition cycle three times.
IMPORTANT
The selection of the nozzles, based on the total flow rate
(2 nozzles in operation), must be made accounting for the
flow rate values that correspond to a fuel working pressure
of 12 bar.
The ratio between the first and second stage can be varied
within wide limits by replacing the nozzles.
ENGLISH
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