Chamberlain 1160-1/2HP Garage Door Opener User Manual


 
ASSEMBLY STEP 3
Tighten the Chain Assembly
CAUTION: Keep the chain from twisting as nuts are
turned
PROCEDURE: Thread inner nut on the trolley in the
direction shown. Loosen outer nut, if necessary.
Tension is correct when the chain is approximately 1/2"
above the base of the T-rail, midway between the pulley
bracket and the opener.
To maintain proper tension, tighten outer nut as shown
Sprocket noise can result if chain Is either too loose
or too tight.
CAUTION: Do not overtighten the chain. Refer to
Page 7.
ASSEMBLY OF YOUR GARAGE DOOR OPENER IS NOW COMPLETE
BEFORE BEGINNING THE INSTALLATION OF YOUR GARAGE DOOR OPENER, BE SURE TO
COMPLY WITH ALL THE SAFETY RULES.
KEEP GARAGE DOOR BALANCED.
STICKING OR BINDING DOORS MUST BE
REPAIRED. THE GARAGE DOOR, DOOR
SPRINGS, CABLES, PULLEYS, BRACKETS
AND THEIR HARDWARE ARE UNDER
EXTREME TENSION AND CAN CAUSE
SERIOUS PERSONAL INJURY. DO NOT
ATTEMPT TO LOOSEN, MOVE OR
ADJUST THEM. CALL FOR GARAGE
DOOR SERVICE
DO NOT WEAR WATCHES, RINGS OR
LOOSE CLOTHING WHILE INSTALLING
OR SERVICING A GARAGE DOOR
OPENER.
IT IS RECOMMENDED THAT THE GARAGE DOOR OPENER BE INSTALLED 7 FEET OR MORE ABOVE THE
FLOOR. WHERE SPACE PERMITS.
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