Hired-Hand RS-300 Door - Manual (Page 20)

Part No. 4801-5157 Rev 11-05 RS-300 Door Page 20 of 30
3. Connect the sprockets with the drive chain, shorten to a suitable length and join together with the chain link
provided in the hardware bag. To shorten the chain, punch out the pin that will leave an inside link nearest
to the desired length. Connect the chain around the sprockets using the chain link. Refer to Figure 18,
Chain Link.
4.
Slide the operator to tighten the drive chain and then firmly tighten the mounting bolts. Check the tension
on the chain and the set screws on the sprockets (there should be no more than 1/4" slack when chain is
depressed between sprockets.
5. Opera-MH: Run hand chain through the pocket wheel and through the chain guide outside the frame
(Refer to Figure 19, Installing Hand Chain On Manaras Operator), allow both ends to hang down
toward the ground and cut hand chain, if necessary, so that both ends are approximately 2 feet (0.6 m) from
floor. Connect both ends of hand chain.
CAUTION!
BEFORE PULLING HAND CHAIN THROUGH POCKET WHEEL OR LIFTING THE
DOOR DIRECTLY BY HAND, PULL CAM PLATE AND SPIN CAM NUTS TO CENTER
OF LIMIT SHAFT SO AS TO BE SURE THE CAMS ARE NOT BEING MECHANICALLY
DRIVEN THROUGH THEIR NORMAL LIMIT SWITCH END POSITIONS.
Figure 18 Chain Link
Figure 19 Installing Hand Chain On Manaras Operator