BIFFI F02 User Manual

7.2 Trouble-Shooting
All F02 actuators have passed the functional test performed by Biffi Quality Assurance
personnel.
If the actuator does not work, before trouble-shooting make sure that:
• The main supply is the same as stated in the name plate menu;
• The green LED for available power supply is switched on;
• Power supply is available to the actuator and no protective device has declutched in the
plant.
7.2.1 THE ELECTRONICS DO NOT SWITCH ON WHEN POWERED
- Check that the value of the main voltage on terminals L1 and L2 (and in case L3) is
correct;
- Remove the cover assembly;
- Check the continuity of the wires between terminals L1, L2 and the connector of the
power card;
- If there is no continuity on the L1-L2 cables, replace the terminal board; in case of
continuity, check the fuse mounted on the power card;
- Replace it if burnt;
- If the fuse is ok, replace the power card.
7.2.2 DC OUTPUT VOLTAGE NOT AVAILABLE AT THE TERMINALS
- Switch the main power supply off and disconnect all wires from terminals 33 and 34;
- Switch the main power supply on and check if the voltage on terminals 33 and 34 is
between 23 and 27 Vdc;
- If the voltage is correct check the external wiring and the electrical load. It should not
exceed 4W.
- If the voltage is not correct, replace the power card.
7.2.3 THE ACTUATOR DOES NOT WORK FROM REMOTE CONTROLS
Check that:
- The wiring to terminals 32, 35 and 36 is correct;
- There is no short circuit between wires;
- The electrical load does not exceed 4W;
- The value is in the range 24-120Vac 50/60Hz or 20-125Vdc, if external voltage supply is
used.
7.2.4 THE MOTOR IS VERY HOT AND DOES NOT START
- Wait until the motor cools down before trying to operate the actuator again;
- Check that the number of operations per hour and their duration is suitable for the actuator
service (see the name-plate);
- Check that the valve operating torque is within the range of the unit’s designed operating
torque;
- Always check the causes of abnormal operation.
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F02 Quarter-turn Electric Actuators
instruction and operating manual
Section 624/2 chapt. E

BIFFI F02 Specifications

General

Brand	BIFFI
Model	F02
Category	Controller
Language	English