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iii
ASSEMBLY STEP 5
Tighten the Chain
• Spin the inner nut and lock washer down the
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/2" above the
base of the rail at its midpoint, re-tighten the inner
nut to secure the adjustment.
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 re-adjust the chain.
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 1
Outer Lock TroLley
Nut Washer Shaft
To Tigh,en Outer Nut ---i_-1 [ /
'T°nTI_Nhrutn
Figure 2
,,
Chain I
I
i
tIJI II ,1 ,,i,_ 1111 il II
i II/2 Inch
/
Base _)fRail Mid length of Rail
I NSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death:
1. READANDFOLLOWALL INSTALLATIONWARNINGS
ANDINSTRUCTIONS.
2. Install garagedoor openeronly on properlybalanced
andlubricatedgaragedoor.An improperlybalanced
door maynot reversewhen requiredand could resultin
severeinjury or death.
3. All repairsto cables,spring assembliesand other
hardwareMUSTbe maclebya traineddoor systems
technicianbeforeinstalling opener.
4. Disableall locksandremoveall ropesconnectedto
garagedoor beforeinstallingopenerto avoid
entanglement.
5. Install garagedoor opener7 feet or moreabovefloor.
6. Mount emergencyreleasehandle6 feetabovefloor.
7. NEVERconnectgaragedoor openerto powersource
until instructedto do so.
8. NEVERwearwatches,rings or looseclothingwhile
installingor servicingopener.Theycouldbecaughtin
garagedoor or openermechanisms.
9. Installwall-mountedgaragedoorcontrol:
• within sight of the garagedoor
• out of reachof children at minimumheightof 5 feet
• awayfrom all movingparts ofthe door.
10. Placeentrapmentwarninglabelon wall nextto garage
door control.
11. Placemanualrelease/safetyreversetest labelin plain
viewon insideof garagedoor.
12. Uponcompletionof installation,testsafetyreversal
system.DoorMUSTreverseon contactwith a one-
inch highobject(or a 2x4 laidflat) onthe floor.
11