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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, reqighten
the inner nut to secure the adjustment.
Sprocket noise can result if chain istoo loose
When installation is complete, you may notice some
chain droop with the door dosed 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, ALWAYSpuff 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 ff necessar]z Then repeat Adjustment
Step3.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
Figure 1 Tro!ley
Outer Lack Threaded
Nut Washer Shatl
To_ghlen Outer Nut _ , /
U _ TOTlghlen
Figure 2
Chain
i
Base el Ra Mid length ut Roll
_._b1,_,,,,u_, L , i i L J L_ i , Jl ULLL_ LL ±HLuJl
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1 READANDFOLLOWALLINSTALLATIONWARNINGS
ANDINSTRUCTIONS.
2 Installgaragedoor openeronly onproperlybalanced
and lubricatedgaragedoor An improperlybalanced
door maynet reversewhenrequiredandcouldresult in
SEVEREINJURYor DEATH
3 All repairsto cables,springassembliesandother
hardwareMUSTbe madebya traineddoor systems
technicianBEFOREinstallingopener,
4 Disableatt locksand remeveall ropesconnectedto
garagedoor BEFOREinstalling openerto avoid
entanglement..
5 Installgaragedoor opener7feet (2 13 m) or more
abovefloor
6 Mountemergencyreleasehandle6 feet (183 m) above
floor
7 NEVERconnectgaragedoor openerto powersource
until instructedto do so
8..NEVERwearwatches,ringsor looseclothingwhile
instalgngor servicingopener Theycouldbe caughtin
garagedoor or openermechanisms,
9 Installwalt-mountedgaragedoor control:
• within sight of the garagedoor.
, out of reachof childrenat minimum height of 5 feet
(15 m).
• awayfrom all movingparts ofthe door
I0 Placeentrapmentwarninglabel onwal! nextto garage
door control
11 Placemanua]release/safetyreversetest labelin plain
viewon insideof garagedoor
12 Uponcompletionof installation,testsafety reversal
system DoorMUSTreverseon contactwith a
I-1t2" (38 cm) high object(or a 2x4laid flat) on
thefloor
11