- 8 -
Ref No 626 / Art No 980626
We reserve the right to
make changes without notice
www.rotork.com www.remotecontrol.se
ROTORK SWEDEN AB
Box 80, Kontrollvägen 15, SE-791 22 Falun, Sweden
Tel: +46 (0)23-587 00 • Fax: +46 (0)23-587 45 • falun.info@rotork.com
Troubleshooting
PCU card is due to various reasons does not function properly if use the environment and actuators determine the fre-
quency of use, and if there is no more than refer to the following items to verify abnormality.
Problem Cause Sollution
Manual override will not move
The worm wheel and
mechanical limit stop
is jammed
Loosen the mechanical limit stop and
the valve mounting bolts.
Correct the mechanical stop position
and then secure the mounting bolts
and limit stop.
Level will not hold position when
pulled toward the hand wheel
When the OVER LIMIT SWITCH
Actuator to move the handle when
not in operation
In manual operations,
the actuator will not cycle full open
or full close.
Limit switch malfunction and / or
mechanical limit stop set incorrectly
Reset the limit switch cam and reset
the mechanical limit stop
Actuator suddenly stops
during operation
The over torque switch
has tripped
Valves torque has increased.
Valve needs to be checked/ repaired
or replaced, or the over torque switch
has failed and needs to be reset.
When the motor does not operate
Main power failure Main power check
Wire disconnect or shot circuit Replace defective wire
Motor or condenser is damaged Replace motor or condenser
PCU Board failure Replace PCU Board
When 3 phase operation rotates ac-
tuator in the opposit direction than the
signal that is applied
Phase reversal Switch two of the 3 phase wires
When actuator continues to rotate
even after the cam strikes
the limit switch
When PCU board
FAULT LAMP ashes
INPUT failure
circuit & disconnection
INPUT check
PCU board FAULT LAMP lighted,
When CLOSE LAMP ashes
POTENTIOMETER disconnection POTENTIOMETER check
PCU board FAULT LAMP lighted,
When the lights OPEN LAMP
POTENTIOMETER
P1, P3 reversal
P1, P3 re-wiring
* In addition to the above described mechanical / electric failures, other causes may be the reason for a failure based
on the site conditions. For more information please contact Rotork Sweden AB for consultation.
For faster service, please have all of the nameplate information avalibe.
To Previous Page
Loading...
