ASSEMBLY STEP 3

Fasten the Rail to the Motor Unit

• Place the opener on packing material to protect the

cover. For convenience, put a support under the chain

pulley bracket.

To avoid serious damage to opener, ONLY use bolts/fasteners mounted in top of motor unit.

Remove the two 5/16"-18x1/2" washered bolts mounted

 

in the top of the motor unit.

Align the holes in the back section of the rail with the

 

holes in the motor unit.

Fasten the rail with the two washered bolts previously

 

removed. Tighten securely. Remember to use only

 

these bolts! Any other bolts will cause serious

 

damage to the opener.

Insert a 5/16"-18x7/8" hex bolt into the cover protection

 

bolt hole in the rail as shown. Tighten securely with a

 

5/16" lock washer and nut.

NOTE: This bolt prevents trolley over-travel. Keep a 25 mm minimum between the trolley and this bolt when adjusting travel limits (see page 29).

Model 1225EM Only: Attach chain spreader with #8x1" hex screws and washers as shown.

HARDWARE SHOWN ACTUAL SIZE

MODEL 1225EM ONLY

MODEL 1220EM

ONLY

Washers

Washered Bolt 5/16"-18x1/2"

Hex Bolt

5/16"-18x7/8"

Cover Protection Bolt Hole

Rail (Back Section)

Lock Washer 5/16"

Nut 5/16"-18

#8x1"

Hex Screws

Chain

Spreader

USE ONLY THIS

TYPE AND SIZE

BOLT

Hex Bolt

Nut 5/16"-18 Lock Washer 5/16"

5/16"-18 x 7/8"

12