ASSEMBLY STEP 5
Tighten the Chain
•Spin the inner nut and lock washer down the trolley threaded shaft, away from the trolley.
•To tighten the chain, turn outer nut in the direction shown (Figure 1).
•When the chain is approximately 1/4" (6 mm) above the base of the rail at its midpoint,
Sprocket noise can result if chain is too loose.
When installation is complete, you may notice some chain droop with the door closed. This is normal. If the chain returns to the position shown in Figure 2 when the door is open, do not
NOTE: During future maintenance, ALWAYS pull the emergency release handle to disconnect trolley before adjusting chain. You may notice loosening of chain after Adjustment Step 3 (Test the Safety Reversal System). Check for proper tension and readjust chain if necessary. Then repeat Adjustment Step 3.
You have now finished assembling your garage door opener. Please read the following warnings before proceeding to the installation section.
Figure 1
| Outer | Lock | Trolley |
| Nut | ||
| Washer | Threaded | |
To Tighten Outer Nut |
| ||
|
| Shaft | |
|
|
| |
|
| Inner Nut | |
|
| To Tighten | |
|
| Inner Nut | |
Figure 2
Chain
1/4" (6 mm)
Base of Rail | Mid length of Rail |
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
WARNING
To reduce the risk of SEVERE INJURY or DEATH:
1.READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS.
2.Install garage door opener ONLY on properly balanced and lubricated garage door. An improperly balanced door may NOT reverse when required and could result in SEVERE INJURY or DEATH.
3.ALL repairs to cables, spring assemblies and other hardware MUST be made by a trained door systems technician BEFORE installing opener.
4.Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing opener to avoid entanglement.
5.Install garage door opener 7 feet (2.13 m) or more above floor.
6.Mount the emergency release within reach, but at least 6 feet (1.83 m) above the floor and avoiding contact with vehicles to avoid accidental release.
7.NEVER connect garage door opener to power source until instructed to do so.
8.NEVER wear watches, rings or loose clothing while installing or servicing opener. They could be caught in garage door or opener mechanisms.
9.Install
•within sight of the garage door.
•out of reach of children at minimum height of 5 feet (1.5 m).
•away from ALL moving parts of the door.
10.Place entrapment warning label on wall next to garage door control.
11.Place manual release/safety reverse test label in plain view on inside of garage door.
12.Upon completion of installation, test safety reversal system. Door MUST reverse on contact with a
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