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MANUAL OVERRIDE ENGAGED
REPORTED FAULT
POSSIBLE REASON(S) POSSIBLE SOLUTIONS/ ADVICE
LED Flashing
Manual override is
selected
Manual Override (MO) activated
Description of MO function:
When ‘MAN’ is selected, the motor continues to run and starts a timer in the processor but the actuator’s output drive is disconnected
from the drive train. Because the output shaft to which the motor and end of travel cams are fitted is stationary, the electronics time out
after a minute or so and as the end switch has not made to confirm the actuator has reached it’s open (or closed) position that reaching
the end of travel switch would confirm, the actuator knows that the motor is working normally (as it is not drawing high current that a
blocked valve would cause, for example) but because the output shaft isn’t moving, the actuator must be in ‘MANUAL’.
Note:
The hand-wheel in models 20-55 rotate in the direction of rotation, so clockwise to close. In Model 85, the hand-wheel rotates in
the opposite direction to the direction of rotation (counter-clockwise). There are direction of rotation markers in the hand-wheel caps.
Known issues with MO/ Gearbox:
Selector lever damaged through excessive force
• When the Man/ Auto selector lever is moved to make an alternate selection, excessive force can bend an internal plastic arm which is
attached to the selector lever by the external screw, which if damaged prevents the arm from lifting a spring loaded gear out of the live
gearbox gear train, which engages the MO gear drive train. To repair this requires a total actuator strip down, replace parts and rebuild,
and in our view is not economically viable because of the time it takes.
This damage is not covered by the warranty as it is user abuse of
the product.
Auto does not engage when selected
• The manual override selector lever lifts a spring loaded gear out of the gear train to disconnect the final drive (output shaft drive)
when ‘MAN’ is selected. Occasionally when the selector lever is returned to ‘AUTO’ the gear teeth sit on top of the gear it should slide
