ASSEMBLY STEP 4

For Sectional and One-Piece Doors OnlyInstall the Chain and Attach theSprocket Cover

To avoid possible SERIOUS INJURY to fingers from moving garage door opener:

•ALWAYS keep hand clear of sprocket while operating opener.

•Securely attach sprocket cover BEFORE operating.

INSTALLING THE CHAIN

1.Dispense a few inches of chain from carton and fasten to trolley with a master link from the hardware bag. (Figure 1).

•Push pins of master link bar through chain link and hole in front end of trolley.

Leave Chain & Cable Inside Carton to Prevent Kinking

Keep Chain

Taut When Dispensing

Figure 1

Master Link

Clip-On Spring

Master

Link Cap

•Push master link cap over pins and past pin notches.

•Slide clip-on spring over cap and onto pin notches until both pins are securely locked in place.

2.With the trolley against the screwdriver, dispense the chain around the pulley.

3.Model 1215EM:

•Continue along the rail and around the motor unit sprocket (Figure 2). The sprocket teeth must engage the chain. Continue forward to the trolley threaded shaft.

Model 1225EM:

•Continue along the rail and around the motor unit sprocket (Figure 2). Proceed back around the correct groove in the chain spreader (Figure 3). The sprocket teeth must engage the chain.

4.Use the second master link to connect the chain to the flat end of the shaft (Figure 1). Check to make sure the chain is not twisted.

5.Remove the screwdriver.

ATTACHING THE SPROCKET COVER 1215EM ONLY

Insert the back tab in the slot on the back of the mounting plate. Squeeze the cover slightly and insert the front tab (Figure 4).

 

 

Flat End of

 

 

Threaded Shaft

 

 

Pin Notch

 

 

Pin

 

 

Trolley

 

 

Flat End

 

 

of Trolley

 

Chain

Master

Install Chain

Pulley

Link Bar

In This Direction

Bracket

 

Figure 2

Chain

Install Chain

 

Spreader

In This Direction

 

 

Motor Unit

 

 

Sprocket

Figure 3

Chain

6-Tooth

 

Spreader

Sprocket

 

 

Opener

Mounting Plate

Figure 4

Sprocket

One-Piece Doors

Cover

6-Tooth Sprocket Application (Model 1225EM)

 

 

 

Back Tab Slot

 

 

 

Top of Motor Unit

8-Tooth

 

 

Chain

 

 

Spreader

Sprocket

 

 

 

Opener

 

Front Tab Slot

 

Mounting Plate

 

 

 

 

Mounting

 

 

 

Plate

 

 

 

 

Sectional Doors

 

 

8-Tooth Sprocket Application (Model 1225EM)

 

 

(6-tooth sprocket can be used if slower travel speed is

 

 

 

desired.)

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