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② MANUAL OVERRIDE ENGAGED
POSSIBLE SOLUTIONS/ ADVICE
Manual override is
selected
Manual Override (MO) acvated
Descripon of MO funcon:
When ‘MAN’ is selected, the motor connues to run and starts a mer in the processor but the actuator’s output drive is disconnected
from the drive train. Because the output sha to which the motor and end of travel cams are ed is staonary, the electronics me out
aer a minute or so and as the end switch has not made to conrm the actuator has reached it’s open (or closed) posion that reaching
the end of travel switch would conrm, 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 sha isn’t moving, the actuator must be in ‘MANUAL’.
Note: The hand-wheel in models 20-55 rotate in the direcon of rotaon, so clockwise to close. In Model 85, the hand-wheel rotates in
the opposite direcon to the direcon of rotaon (counter-clockwise). There are direcon of rotaon 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 selecon, excessive force can bend an internal plasc arm which is
aached to the selector lever by the external screw, which if damaged prevents the arm from liing 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 me 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 lis a spring loaded gear out of the gear train to disconnect the nal drive (output sha 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
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