LiftMaster J door operator - Manual (Page 16)

16
HOIST AND JACKSHAFT
Assembly/Typical installation - Hoist and Jackshaft
DETERMINE MOUNTING LOCATION
TYPICAL INSTALLATION
1
1
1a
1b
Select handing. Right (R) or Left (L).
On models J, H, HJ and GH operators the drive sprocket can be
mounted on either the right or left side.
For models H and HJ with manual hand chain systems, the
handing of the operator must be determined at the time of order.
The handing is indicated by the last letter of the model number
(R or L). The hand chain wheel cannot be switched. If your
installation causes the hand chain to hang in the door opening,
hook the chain to the side near the top of the door jamb.
The operator may be mounted on the wall, shelf or bracket
(not provided, see accessories). The optimum distance between
the door shaft and operator drive shaft is 12 - 15 inches.
Wall mount
Shelf or bracket mount
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 the operator and the 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.
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 door systems technician 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,
cable, 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.
• Fasten the operator SECURELY to structural supports of the
building.
• Concrete anchors MUST be used if installing ANY brackets.
ATTENTION
AVERTISSEMENT AVERTISSEMENT
AVERTISSEMENT
WARNING
CAUTION
WARNING
WARNING WARNING
PRECAUCIÓN ADVERTENCIA
ADVERTENCIA ADVERTENCIA
ASSEMBLE THE OPERATOR
ASSEMBLY
1a 1b
12" - 15"
12" - 15"
EXAMPLE: Right Hand