Craftsman 139.18987 Owner's Manual download pdf (Page 5)

Closed Position

Header

Wall

Safety

Reversing Sensor

FINISHED CEILING

Support bracket

& fastening

hardware is required.

See page 17.

Safety

Reversing

Sensor

Header

Wall

Access Door

Gap between floor and bottom

of door must not exceed 1/4".

Header

Bracket

Trolley

Emergency

Release

Rope & Handle

Door Bracket

Trolley Stop Bolt

Belt

Rail

Straight

Door

Arm

Curved

Door

Arm

Garage

Door

Before you begin, survey your garage area to

see whether any of the conditions below apply

to your installation.

Based on your particular requirements, there are

several installation steps which might call for

materials and/or hardware not included in the carton.

• Step 1, page 13 - Look at the wall or ceiling above

the garage door. The header bracket

must

securely fastened to structural supports.

• Step 5, page 17 - Do you have a finished ceiling in

your garage? If so, a support bracket and

additional fastening hardware (not provided) may

be required.

• Safety reversing sensor, page 21 - Depending on

garage construction, wood blocks or extension

brackets (see Accessories page 38) may be

needed to fasten sensors to mounting locations.

• Step 10, page 22 - Floor mounting of the safety

reversing sensor will require hardware that is not

provided.

• Step 11, page 25 - Generally, a one-piece door

does not require reinforcement. If your door is

lightweight, you can refer to the information

relating to sectional doors on page 24.

• Step 11, page 25 - Depending on your door's

construction, you might need additional mounting

hardware for the door bracket.

• Do you have an access door in addition to the

garage door? If not, Model 18752 Emergency Key

Release is required. See page 38.

• The gap between the bottom of the garage

door and the floor cannot exceed 1/4".

Otherwise, the safety reverse system may not

work properly. See page 30. The floor or the door

should be repaired.

ONE-PIECE Door Installation

You may find it helpful to refer back to this page

as you proceed with the installation of your

opener.

One-Piece Door without Track

Access

Door

Floor must be level

across width of doorSafety

Reversing

Sensor

Safety

Reversing

Sensor

Closed Position

Header

Bracket

Door

Bracket

Straight

Door Arm

Curved

Door Arm

Belt

Emergency

Release

Rope &

Handle

Garage Door

Header

Wall

Rail

Trolley Stop Bolt

Trolley

One-Piece Door with Track

1 2 3 4 5 6 ... 40

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Craftsman 139.18987 Owner's Manual Page 5

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