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5.13
Calibration of the thermal relay
The thermal relay (Fig. 24) 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 lay-
out (electrical wiring in charge of the installer).
To reset, in case of an intervention of the thermal relay, press but-
ton "RESET" 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 oper-
ation.
WARNING
5.14
Motor rotation
As the burner is not fitted with a phase sequence checking de-
vice, the motor rotation may be incorrect.
As soon as the burner starts up, go in front of the
fan motor cooling fan and check it is rotating anti-
clockwise (Fig. 25).
WARNING
If this is not the case:
➤ turn the burner switch to position "0" (OFF) and wait for the
control box to carry out the switch-off phase;
➤ disconnect the power supply to the main panel;
➤ invert the phases on the three-phase power supply.
This operation must be carried out with the electri-
cal supply disconnected.
DANGER
20058360
Installation
24
GB
3
1
4
2
D11821
20079199
Fig. 24
Fig. 25
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