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.
NOTE: You may notice loosening of chain after Adjustment Step 3 (Test the Safety Reversal System). Check for proper tension and readjust chain if necessar_ 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 I |
| Trolley |
Outer | Lock | Threaded |
Nut | Washer | Shaft |
TO Tighten Outer Nut |
|
|
TO Tighten
Inner Nut
Figure 2
Chaini
I
Base of Rail | Mid!length | of Rail |
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death:
1.READAND FOLLOWALL INSTALLATIONWARNINGS AND INSTRUCTIONS.
2.Install garage door opener only on properly balanced and lubricated garagedoor. An improperly balanced door may not reversewhen required and could result in SEVEREINJURY or DEATH.
3.All repairs to cables, spring assembliesand other hardware MUST be made by a trained door systems technician BEFOREinstalling opener.
4.Disableall locks and remove all ropes connected to garagedoor BEFOREinstalling openerto avoid
entanglement.
5.Install garage door opener 7 feet (2.13 m) or more above floor.
6.Mount emergency releasehandle 6 feet (1.83 m) above floor.
7.NEVERconnect garage door openerto power source until instructed to do so.
8.NEVERwear watches, rings or loose clothing while installing or servicing opener.Theycould 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
(1.5m).
•away from all moving parts of the door.
10.Placeentrapment warning label on wall next to garage door control.
11.Place manual release/safetyreversetest label in plain view on inside of garage door.
12.Upon completion of installation, test safety reversal system. Door MUST reverseon contact with a
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