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CHECK THE CONDITION OF THE DOOR AND
IDENTIFY THE SPRING TYPE
See Figure 26 - 28.
WARNING:
If the garage door does not move smoothly, binds, or is
out of balance, have it repaired or replaced by a qualified
service person. An unbalanced or damaged garage door
may not reverse on command, which can result in death
or serious personal injury.
NOTICE:
The garage door opener may not function as intended if
installed onto an unbalanced garage door.
Remove any ropes attached to the garage door.
Disable any and all door locks.
Raise and lower the door to ensure it moves smoothly.
Check the balance of the door. Raise the door until it is
half open and release it. If properly balanced, the door
will remain in this position without moving.
NOTE: For single-panel garage doors, balance can be
checked at two additional positions. Raise the door until it
is nearly in the fully open position (about shoulder height)
and release it. If properly balanced, the door should
move to the fully open position. Lower the door until it
is nearly in the fully closed position (about knee height).
If properly balanced, the door should move to the fully
closed position.
If the door does not move smoothly, binds, or is out of
balance, this could indicate a problem with the door, door
springs (torsion spring and/or extension spring), or door
spring components. Have the garage door or door springs
repaired by a qualified service person before installing
garage door opener.
WARNING:
Never attempt to loosen, adjust, or remove the door
springs (torsion spring and/or extension spring), door
spring components, or any surfaces to which these items
are secured. These items are under extreme tension and
any such alteration could result in death, serious personal
injury, or property damage.
If the door moves smoothly and is balanced, you may
begin installing the garage door opener.
INSTALLATION
Half-Open
Single-Panel
21 - English
Half-Open
Position
Sectional
Door
Position
Door
Torsion Spring
Fig. 26
Fig. 27
Extension Spring
Fig. 28
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