tekmar 742 Actuating Motor - Manual (Page 6)

© 2013 742_D - 10/13
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Step 5 - Final Assembly
Install actuator cover onto the actuator. Using a Phillips screwdriver, tighten the
two screws.
Install the scale plate.
For clockwise to open installations, face scale plate with 0 on the left and 1 on
the right.
For counterclockwise to open installations, face scale plate with 1 on the left
and 0 on the right.
Install actuator handle onto the actuator spline.
Install actuator screw through hole in the handle. Using a flat head screwdriver,
tighten until snug. Do not overtighten. •
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Testing and Troubleshooting
The actuator motor includes a manual override.
To engage manual operation, use a flat blade screwdriver and set the manual
override dial to the “hand” position.
Use the handle to manually adjust the valve position. When the handle is set to 0,
the valve should be closed and there should be no heat transfer. When the handle
is set to 1, the valve should be fully open and there should be heat transfer.
To return to automatic operation, use a flat blade screwdriver and set the manual
override dial to the “A” position.
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.2 .4 .6 .8 1
Manual
override dial