Calibration Of The Thermal Relay; Motor Rotation - Riello RLS 70 Manual

5.14

Calibration of the thermal relay

The thermal relay serves to avoid damage to the motor due to an
excessive absorption increase or if a phase is missing.
In case of 220V power supply, change the motor connection from
star to triangle and replace the thermal relay with the one sup-
plied.
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
operation.
ATTENTION
5.15

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 con-
trol 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.
Installation
29 GB
T O
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S T N
M A
T E
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T
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N C
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9 6
N O
9 7
9 8
4 2 1
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O P
9 5
Fig. 31
Fig. 32
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