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5
PREPARATION
It is imperative that the wall or mounting surface provide
adequate support for the operator.
This surface must:
a. Be rigid to prevent play between operator and door shaft.
b. Provide a level base.
c. Permit the operator to be fastened securely and with the
drive shaft parallel to the door shaft.
The safety and wear of the operator will be adversely affected if
any of the above requirements are not met. For metal buildings,
fasten 2" x 2" x 3/16" (or larger) angle iron frames to the building
purlins. Retain 5-1/2" (13.97 cm) between frames.
The GH operator may be mounted on either the right (standard)
or left side of door, and in either a vertical (standard) or
horizontal mounting position. Refer to the steps below if you
require the hand chain and/or disconnect chain to be on the
opposite side of the operator; or if the operator is being mounted
in a horizontal position.
HAND CHAIN RIGHT/LEFT CONVERSION
Remove the two snap rings (1 piece outer, 1 piece inner) on hand
chain shaft assembly. Position roll-pin to fit through cutout in
frame and slide complete shaft assembly through housing and
bevel gear. Insert shaft assembly on opposite side of housing,
and replace bevel gear, bearing, hardware, and snap rings on the
opposite side of shaft in the same manner.
DISCONNECT LEVER RIGHT/LEFT CONVERSION
Remove cotterpins on the ends of the disconnect shaft (square
shaft), move the disconnect lever arm to the opposite side, and
replace the cotterpins. Be sure to keep (2) 12 gauge washers on
the side without the lever arm.
HORIZONTAL MOUNTING CONVERSION
Remove cotterpins on the ends of the disconnect shaft (square
shaft), and remove lever. Replace lever using square hole on
opposite end of lever. Reposition sash chain to opposite end of
lever also. Replace cotterpins.
To prevent possible SERIOUS INJURY or DEATH:
• DO NOT connect electric power until instructed to do so.
• If the door lock needs to remain functional, install an
interlock switch.
• ALWAYS call a trained professional door serviceman if door
binds, sticks or is out of balance. An unbalanced door may
not reverse when required.
• NEVER try to loosen, move or adjust doors, door springs,
cables, pulleys, brackets or their hardware, ALL of which are
under EXTREME tension and can cause SERIOUS personal
INJURY.
• Disable ALL locks and remove ALL ropes connected to door
BEFORE installing and operating door operator to avoid
entanglement.
WARNING
CAUTION
WARNING
WARNING
5-1/2" (13.97 cm)
Shaft Support Bracket
with Bearing (Not Provided)
Door Sprocket
Cotterpin
Disconnect Lever
Cutout for Rollpin
(typical both sides)
Hand Chain Wheel
Chain Guide