Chamberlain CG40DM - Manual (Page 18)

18
INSTALLATION STEP 9
Electrical Requirements
To avoid installation diffi culties, 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 fi t into a grounding type outlet.
If the plug doesn't fi t into the outlet you have, contact a
qualifi ed electrician to install the proper outlet.
If permanent wiring is required by your local code, refer
to the following procedure.
To make a permanent connection through the 7/8" hole in
the top of the motor unit:
1. Remove the motor unit cover screws and set the cover
aside.
2. Remove the attached 3-prong cord.
3. 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
.
4. Reinstall the cover.
To avoid installation diffi culties, do not run the opener
at this time.
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fi re:
• Be sure power is NOT connected to the opener,
and disconnect power to circuit 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 fi t outlet. Be
sure the opener is grounded.
Black Wire
Black Wire
White Wire
White Wire
Ground Wire
Green
Ground
Screw
Ground Tab
PERMANENT WIRING
CONNECTION WRONG RIGHT