Attach The Emergency Release Rope And Handle; Electrical Requirements - Chamberlain 3850 Owner's Manual

INSTALLATION STEP 9

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 1" (2.5 cm) 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 6 feet (1.8 m) above the
floor. Ensure that the rope and handle clear the tops of all
vehicles to avoid entanglement. Secure with an overhand knot.
NOTE: If it is necessary to cut the rope, heat seal the cut end with
a match or lighter to prevent unraveling.
INSTALLATION STEP 10

Electrical Requirements

To avoid installation difficulties, do not run the opener at this
time.
To reduce the risk of electric shock, your garage door opener has
a grounding type plug with a third grounding pin. This plug will
only fit into a grounding type outlet.
If the plug doesn't fit into the outlet you have, contact a qualified
electrician to install the proper outlet.
RIGHT
If permanent wiring is required by your local code, refer to the
following procedure.
To make a permanent connection through the 7/8" (2 cm) hole in
the top of the motor unit:
• Remove the motor unit cover screws and set the cover aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the brass
terminal; the white (neutral) wire to the screw on the silver
terminal; and the ground wire to the green ground screw.
The opener must be grounded.
• Reinstall the cover.
To avoid installation difficulties, do not run the opener at this
time.
WRONG
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.
Emergency
Release Handle
Overhand
Knot
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire:
• Disconnect ALL electric and battery power BEFORE
performing ANY service or maintenance.
• 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 grounded.
PERMANENT WIRING
CONNECTION
Ground Tab
Green
Ground Screw
Ground Wire
15
Overhand
Knot
Trolley
Release
Rope
Arm
Black
Wire
White Wire Black Wire