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5.15.3 Shielding the connections
For the burner to operate correctly, where re-
quired, it is necessary to shield the connections.
WARNING
To shield the motor connection, proceed as follows:
to access the motor casing, loosen the four screws 1)(Fig. 33)
and remove the cover 2).
To make the correct shielding, it is important to
bear in mind the necessary length of the connec-
tions inside the motor casing.
CAUTION
Shield the cable 4) running from the VSD (inverter), as
shown in Fig. 34 and using the coupling 3);
install the cable 4) with its connection to the motor casing,
securing it carefully.
Carry out the motor connection as shown in the wiring dia-
grams.
Fix the grommets/cable terminals of the connections
securely and tidily to the terminal board of the motor.
In the protective earth "PE" on the body of the fan motor,
install the ground wire 5) fixing the eye 8) with the screw 6)
outside the motor box putting the washers 7) in-between.
Make a final visual check, then close the motor casing by
tightening the 4 screws 1)(Fig. 33).
5.16
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. 35).
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
20124030
Installation
20096739
20097005
30
GB
5
4 3
7
7
8
6
20079199
1
2
Fig. 33
Fig. 34
Fig. 35
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