5
Fig.2
1
Tighten until...
2
Tighten nut
Flange Nut
Chain to Cable Connector
To Tighten the Chain:
Follow steps shown in Fig.2 to tighten the chain:
1. Turn the Chain-to-Cable Connector on the Trolley Shaft
until the chain is about 1/4” (6mm) above the base of the
rail. Compare with the illustration below.
2.
Tighten the Flange Nut on Trolley Shaft against the Chain-to
-Cable Connector.
Notice
During operation, it is normal for the chain to appear loose when
the door is closed. If the chain returns to the position as shown
below when the door is opened, the chain is adjusted properly.
DO NOT re-tighten the chain.
When performing maintenance, always PULL the Emergency
Release to DISCONNECT the door from Opener before adjusting
the chain.
1/4” (6mm)
Base of Rail
Mid-point of rail assembly
Chain
Top of Rail
Actual Size
T-rail Assembly and Tensioning
Fig.1
!
CAUTION
- DO NOT connect power until instructed.
- To prevent INJURY, keep hands and fingers away
from joints and possible sharp edges.
- Wear gloves when installing chain and cable.
2
3
4
1/4” Flange Nut x 4
Screw
Spring Washer
Washer
To Assemble the Rail
Align the pre-assembled T-rail on the top of opener in the direction as shown in Fig.1.
Secure the T-rail to the opener firmly using 1/4” flange nut x 4.
Final Step to T-Rail Installation
Fasten the Screw(2) to the motor shaft with spring washer(3) and washer(4) in between.
Note: The chain or belt rail assembly comes pre-tensioned from the factory. If installing with the optional belt rail,
follow the same adjustment steps.
#
10 - 24 x 1/2”
