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DRAWING (AS REFERNCE POINT) SHOWING THE PLACING OF NOZZLE - ELECTRODES - FLAME DISK
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CHECKS
After starting up the burner, check the safety devices (photoresistant
cell, shut down system, thermostats).
1) The photoresistant cell is the flame control device and, if the
flame should be extinguished during operations, it must be
capable of intervening immediately. (This check should be
made at least one minute after start up).
2) The burner should be capable of blocking itself (shut down) and
remaining so, when the flame does not appear regularly during
the start-up phase within the time limit preset on the control
box. The shut down causes the immediate interception of the
fuel and therefore the arrest of the burner and the red warning
light comes on. To check the efficiency of the photoresistant
cell and of the shut down system, proceed as follows:
a) start up the burner.
b) After about one minute after ignition, extract the photoresistant
cell by pulling it out of its seat and simulate flame failure by
darkening the photoresistant cell ( using a hand or a rag to
close the window in the photoresistant cell support). The burner
flame should be extinguished.
c) Keep the photoresistant cell in the dark and the bur-
ner will start up again but, as the photoresistant cell
does not see the light, the burner will go to shut
down within the pipe preset by the programmer.
The control box can only be unblocked by pressing manually
the appropriate pushbutton. Check the shutdown efficiency
at least twice.
3) Control the efficiency of all the thermostat and/or pressure
switches of the burner by checking that their intervention
determines an interruption in operations.
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