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5.17
Calibration of the thermal relay
The thermal relay (Fig. 31) serves to avoid damage to the motor
due to an excessive absorption increase or if a phase is missing.
For calibration 2), refer to the table indicated in the electrical
layout (electrical wiring by the installer).
To reset, in case of thermal relay activation, press the "RESET"
button 1).
The button "STOP" 3) opens the NC contact (95-96) and stops
the motor.
Insert a screwdriver in the window "TEST/TRIP" 4) and move it in
the arrow direction (to the right) to carry out the thermal relay test.
The automatic reset can be dangerous.
This operation is not foreseen in the burner
operation.
WARNING
5.18
Motor rotation
As soon as the burner starts, place yourself in front of the cooling
fan of the fan motor and check that it turns anticlockwise
(Fig. 32).
If this is not the case:
put the switch of the burner to "0" (off) and wait until the
control box carries out the switching off phase.
Disconnect the electrical supply from the burner
by means of the system main switch.
DANGER
Invert the phases on the three-phase motor power supply.
20148180
Installation
3
1
D11655
28
GB
1
2
4
2
20079199
4
Fig. 31
Fig. 32
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