Linear AUJ-S Installation Instructions, Springs, Pulleys, Cables And Mounting Hardware Used To

6 INSTALLATION INSTRUCTIONS

WARNING

SPRINGS, PULLEYS, CABLES AND MOUNTING HARDWARE USED TO

BALANCE YOUR GARAGE DOOR ARE UNDER EXTREME TENSION AT ALL

TIMES AND CAN CAUSE SEVERE INJURY OR DEATH IF DISTURBED.

DO NOT ATTEMPT ADJUSTMENT.

Figure 4, page 8 illustrates several positions suitable for mounting the operator; right hand or left hand, either wall mount or ceiling mount and center mount with direct coupling to the torsion shaft. Direct coupling may also be used in a side mount installation. Operators intended for direct coupling require an internal speed modification and must be ordered from the factory.

construction of the surface supporting the operator or noticeable deflection of the door shaft, it is advisable to install a shaft support between the operator jackshaft and the door shaft to prevent the loss of limit settings due to the possibility of the chain jumping over the sprocket teeth. Shaft supports are available from the factory.

CHAIN COUPLING MOUNTING

Refer to Figure 2 (at right), Figure 1, page 4 and Figure 5, page 9 for component identification and the operator mounting slot locations. Place the sprockets [ 3 ] and [ 4 ] on the chosen side of the torsion shaft of the door and on the corresponding end of the output shaft of the operator. The sprockets should be kept as close as possible to the bearings. Fasten the connecting link to each end of the door chain and loop the chain over the sprocket [ 3 ] on the torsion shaft. Temporarily suspend the operator in its mounting position using the chain over the sprocket [ 4 ] at one end of the jackshaft and a rope or chain at the mid point (to support the operator weight). With the chain tight and straight and the jackshaft parallel with the torsion shaft, trace the

BEFORE PROCEEDING WITH THE OPERATOR INSTALLATION AND SETTINGS, MAKE A FINAL CHECK FOR TIGHTNESS OF ALL MOUNTING HARDWARE AND SET SCREWS.

Proceed to “Chain Hoist and Floor Disconnect Installation”.

mounting slot on the mounting surface then lower the operator to the floor.

IT IS ESSENTIAL THAT THE SURFACE SUPPORTING THE OPERATOR BE RIGID AND SECURE. FAILURE TO PROVIDE A FIRM MOUNTING SURFACE WILL RESULT IN DAMAGE TO THE DOOR TORSION SHAFT AND THE PREMATURE FAILURE OF THE OPERATOR.

If the construction permits, the operator should be mounted with 3/8 inch diameter bolts through the wall. If it is not feasible to go through the wall, then use lag bolts to fasten the operator to the mounting surface. Locate the four holes within the tracings of the slots made in the previous step at the positions which will allow for adjust-ment of the chain tension. After drilling the mounting holes and instal-ling lag shields, if necessary, bolt the operator to the mounting surface but do not completely tighten the bolts at this time. Check the alignment of the sprockets, adjust their positions on the shafts if necessary and tighten the set screws securely on both sprockets. pulling downward on the operator to remove slack from the chain, tighten the four mounting bolts.

Inspect the installation. There should be no slack in the chain but neither should it be under severe tension which might shorten the life of the bearings. If there is any flexibility in the system due to

15.00

7.75

1.50

107171

3.00

Figure 2