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HARDWARE
Attach the Cable Tension Monitor (Required)
4
NOTE: The cable tension monitor is shipped for left side installation. It is recommended
that the cable tension monitor be installed on the same side of the door as the garage door
opener. For right side installation, remove the snap-ring holding the roller in place and
reassemble it on the opposite side of the cable tension monitor.
1. Position the cable tension monitor as close to the drum as possible. Make sure cable
tension monitor is located over a wood support member and the roller is free from any
obstructions.
NOTE: There must be no obstructions in the installation area that prevent the cable
tension monitor or the cable itself from closing completely when slack is detected.
2. Mark and drill 3/16 inch pilot holes for screws (pilot holes are not required for
anchors).
NOTE: If the cable tension monitor cannot be mounted into wood with the lag screws
provided, it can be mounted into 1/2 inch or greater drywall using the wall anchors (2)
and the #8 hex screws (2) provided in the hardware bag.
3. Attach the cable tension monitor to the wall using the hardware provided. Make sure
that the roller is on top of the cable.
4. Run bell wire to garage door opener. Use insulated staples to secure wire.
5.
Connect bell wire to the green quick-connect terminals on the garage door opener
(polarity is not important).
NOTE: Cable must have tension through entire door travel. Make sure there is no slack
in cable on opposite side of garage door during normal operation. If slack occurs
during door travel, adjust cables as required.
Drum
Cable
To insert or release wire, push
in tab with screwdriver tip
(to cable tension monitor)
(to garage door opener)
WHT/GRN
Wall
2"-6"
(5-15 cm)
3/4" Min.(19 mm Min.)
Cable Tension
Monitor
Cable Tension
Monitor Roller
1/8"-1/4"
(3-6 mm)
Installation
The cable tension monitor MUST be connected
and properly installed before the garage door
opener will move in the down direction.
The cable tension monitor detects ANY slack
that may occur in the cables and will reverse
the door, eliminating service calls.
SIDE VIEW
#8 Hex Head Screw (2)
Insulated Staples
(Not shown)
#8 Hex Head Screw (2)
Screw #6 (2)
Wall Anchor (2)
Drum
Cable Tension
Monitor Roller
10


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