lift-master ht 用户手册

9. Raise operator straight up until the door can be

raised to the full open position. See Figure 5.
Temporarily secure to ceiling or rafters with rope
or other suitable means.

10. Raise door to full open position. Place a 2x4

board on top of leading edge of door. Lower
operator to rest on 2x4 board.

Make four hangers from 2"x2"x1/4" angle iron. IT IS
RECOMMENDED THAT RAIL BE CENTER-
SUPPORTED AS WELL. Bolt the operator into place.

5

Connect operator end of coil cord to junction box (not
supplied) fastened to the wall approximately half-way
up the door opening.

Electrician must hardwire the junction box to the
operator electrical box in accordance with local
codes.

Take-up reel should be installed 12" above the top of
the door.

Reversing

Edge

Center

Stile

Air Hose

Pneumatic Air Switch

Not Required or Supplied

When Electric Reversing

Edge is Used

Hanger Angles

2"x2"x1/4"

Track

Spacer

Door

Arm

Rope

Release

Door

Bracket

Building
Support

2"x2"x1/4"
Angle Iron

Trolley

Wire 24V