Before You Begin

1. Look at the wall or ceiling above the garage door. The header bracket must be securely fastened to structural supports.

2. Do you have a finished ceiling in your garage? If so, a support bracket and additional fastening hardware (not supplied) may be required.

3. Depending on your door's construction, you might need a special door arm. See your dealer.

4. Do you have an access door in addition to the garage door? If not, Model 1702AML Outside Quick Release Accessory is required.

1 Door Types

A.One-Piece Door with Horizontal Track Only.

B.One-Piece Door with Horizontal and Vertical Track – Special door arm and the Protector System™ (30(8)) required. See your dealer.

C.Sectional Door with Curved Track – See 20B – connect door arm. The Protector System™ (30(8)) is required for doors that are over 2,5m in height

D.Canopy door – Special door arm and the Protector System™ (30(8)) required. See your dealer.

2

2Tools Required

1

2

10 mm, 8 mm,

4,5 mm, 4 mm

11mm, 13mm

3

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Sigma ML750 instruction manual Before You Begin, Door Types, Tools Required