Preparation; Mgj Opposite Handing Preparation - Chamberlain MGJ Owner's Manual

WARNING
Shipped from the factory for either left hand or right hand
CAUTION
mounting. Refer to the last digit in the model number for handing
of your unit. If necessary, the operators may also be field modified
to accommodate opposite handing.
MGJ OPPOSITE HANDING PREPARATIONS
REMOVE DISCONNECT ASSEMBLY COMPONENTS
Remove the master link from the limit chain, remove the chain
and set it aside. Remove the two e-rings securing the sprocket on
the gear reducer shaft. Remove the screws securing the yoke to
the disconnect shaft, set the yoke aside.
Remove the three cotter pins from the disconnect shaft. Do not
discard the pins. Slide the disconnect shaft out of the support
AVERTISSEMENT
bracket. The release lever will now be free inside the motor frame.
Remove the release lever and sash chain from the motor frame.
Slide the disconnect hub, compression spring, and flatwasher
from the end of the gear reducer shaft. Remove the disconnect
ATTENTION
support bracket by first removing the two gear reducer housing
screws. Replace the screws in the gear reducer and firmly tighten.
RE-ASSEMBLE DISCONNECT ASSEMBLY
Remove the two screws on the opposite side of the gear reducer
and mount the disconnect support bracket with the notched side
facing the motor. For the remainder of the installation, follow the
steps outlined above in reverse order, referring to the illustration
as necessary.
ADVERTENCIA
PRECAUCIÓN
P R E P A R A T I O N
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.
REMOVE LIMIT SWITCH SHAFT ASSEMBLY
Remove limit chain. Remove the e-ring and washers from the side
away from the limit chain sprocket. Remove limit shaft. The limit
adjust nuts will need to be unscrewed while removing shaft. To
reassemble follow the above steps in reverse order.
Keys
Spring
Disc Hub
Sprocket
E-Ring
Shaft
Bracket
Yoke
5
WARNING
WARNING WARNING
AVERTISSEMENT
AVERTISSEMENT
ADVERTENCIA
ADVERTENCIA
Disc Lever