Chamberlain 120ad Garage Door Opener User Manual


 
19
114A2845
Overhand
Knot
Em
ergency
R
elease Handle
T
rolley Release Arm
NOTICE
The Chamberlain Group, Inc.
Figure 16 - Manual Release
4210E - 3/8/93
Rope
T
rolley
• To prevent possible SERIOUS INJURY or DEATH from
a falling garage door:
– If possible, use emergency release handle to
disengage trolley ONLY when garage door is
CLOSED. Weak or broken springs or unbalanced
door could result in an open door falling rapidly
and/or unexpectedly.
– NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If rope
knot becomes untied, you could fall.
WWARNARNINGING
CAUTIONCAUTION
WARNING
WARNING
INSTALLATION STEP 8
Attach the Emergency Release
Rope and Handle
Thread one end of the rope through the hole in the
top of the red handle so "NOTICE" reads right side
up as shown. Secure with an overhand knot at
least 25mm from the end of the rope to prevent
slipping.
Thread the other end of the rope through the hole
in the release arm of the outer trolley.
Adjust rope length so the handle is 1.8m above
the floor. Secure with an overhand knot.
If it is necessary to cut the rope, heat seal the cut
end with a match or lighter to prevent unraveling.
INSTALLATION STEP 9
Connect Electric Power
To avoid installation difficulties, do not run the opener
at this time.
Connect the operator to a mains which is properly
earthed according to the wiring instruction tag
attached to the power supply cord (and as specified
by local code).
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire:
• Be sure power is not connected to the opener, and
disconnect power to cir
cuit
BEFORE
removing cover to
establish permanent wiring connection.
• Garage door installation and wiring MUST be in
compliance with all local electrical and building codes.
• NEVER use an extension cord, 2-wire adapter, or
change plug in any way to make it fit outlet. Be sure
the opener is earthed.
WWARNARNINGING
CAUTIONCAUTION
WWARNARNINGING
WWARNARNINGING