830873-0001 REV 02/20/2023
©Copyright 2023 Wayne Dalton, a division of Overhead Door Corporation
14
• Perform one complete manual CLOSE-OPEN cycle of the door
with the chain hoist. Ensure the door is running smoothly
and free of obstruction, the door counterbalance is properly
balanced, and the FDO clutch is adjusted properly. If
troubleshooting support is required, contact the factory
technical support specialist.”
WARNING
Verify that at this point, the Tension Wheel is free and there is no spring tension.
WARNING
Tension Wheel will be placed under high spring tension and it could spin rapidly
resulting in death or serious injury. Door must be open when adjusting spring tension.
Use two steel rods 3/4" diameter x 3 feet long (not provided) as winding bars.
WARNING
Winding bar must fit snugly into holes in Tension Wheel. DO NOT use loose fitting bar
or screwdriver which could dislodge resulting in possible serious injury or death.
14. COUNTERBALANCE ADJUSTMENT
• Align Tension Wheel under bracket so Stop Pin can rest in Tension Wheel slot.
• Set Stop Pin in place. See Figure 24D.
Read completely before you set initial turns to the value shown on “DATA SHEET” and
on Tension Headplate decal.
Locate the door in the full up position such that the bottom bar is against the bottom
bar stops and place a clamp on each guide no more than 6" below the bottom bar.
Make certain that the clamping force will be sufficient to stop the door when it rests on
the clamps.
Carefully lower the curtain using the chain hoist so that the bottom bar rests on the
clamps. By hand, rotate the Tension Wheel slightly both directions to determine the
neutral point of the spring counterbalance. Mark the hole in the TENSION WHEEL that is
nearest to the retaining lug on the bracket.
NOTE:
Tension is applied in the direction the coil would turn as the door moves
upward.
• Insert winding bar into tension wheel and pull down. See Figure 24, A.
• Rotate tension wheel 1/8 to 1/4 turn and stop.
• Hold first bar and insert second bar into tension wheel. See Figure 24, B and C.
• Pull down on second bar while removing the first bar.
A)
WALL
WALL
WALL
WALL
FIRST
WINDING
BAR
FIRST
WINDING
BAR
SECOND
WINDING
BAR
SECOND
WINDING
BAR
SECOND
WINDING
BAR
STOP PIN
B)
C)
D)
Figure 24
DANGER
Tension Wheel holds spring tension. Failure to stop pin shaft could
allow Tension Wheel to spin uncontrolled possibly causing serious
injury or death.
DANGER
Exercise caution when applying or adjusting spring tension. Contact with rapidly
rotating Tension Wheel or expelled winding rod can cause serious injury or death.
Final Door Install (continued)
WARNING
Failure to perform a manual chain hoist CLOSE-OPEN cycle
inspection prior to motorized operation of the door may result
in curtain damage, serious injury and/or death
