Merik 501M El Manual Del Propietario página 9

ASSEMBLY STEP 4
Install Chain/Cable
Detach the cable loop from carton and fasten to flat end of
trolley with a master link from coin envelope.
MASTER LINK PROCEDURE: Push pins of master link
bar through cable loop and hole in front end of trolley (A).
Push cap over pins and into notches. Slide clip-on spring
over cap and into pin notches until both pins are securely
locked.
Caution: Keep the chain and cable taut during
installation to help prevent kinking.
With trolley against screwdriver,
dispense the cable around the cable pulley and forward to
the opener sprocket and chain spreader (B). The opener
sprocket teeth must engage the chain. Continue
dispensing chain forward to the trolley (C).
(See illustrations to the right for chain installation for
6- and 8-tooth sprocket based on door type.)
Use the second master link to connect chain to flat end of
threaded shaft.
Check to make sure chain is not twisted.
REMOVE SCREWDRIVER.
Chain
Spreader
B
Tighten The Chain & Cable
• 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.
As you turn the nut, keep the chain from twisting.
• When the chain is approximately 13mm above the base of
the T-rail at its midpoint, re-tighten the inner nut to secure
the adjustment.
Sprocket noise can result if chain is either too loose or
too tight.
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 when the door is open, do not
re-adjust the chain.
ASSEMBLY OF YOUR GARAGE DOOR OPENER IS NOW COMPLETE
Install Chain and Cable
in This Direction
Install Cable & Chain
in This Direction
Opener
Sprocket
C
Master Link
Flat End of
Clip-On Spring
Threaded Trolley Shaft
A
Master
Link Cap
Cable
Loop
Master
Cable Link Bar
Pulley
Sectional Door with Curved Track
8-TOOTH SPROCKET APPLICATION
(6-tooth sprocket can be used if slower
travel speed is desired.)
Chain
Spreader
One-Piece Doors
6-TOOTH SPROCKET APPLICATION
Chain
Spreader
Outer Nut
To Tighten Outer Nut
Trolley
Base of T-rail
9
Master Link
Clip-On Spring
Master
Link Cap
T-rail
Pin Notch
Pin
Trolley
8-Tooth
Sprocket
Opener
Mounting Plate
6-Tooth
Sprocket
Opener
Mounting Plate
Lock
Washer
Inner Nut
To Tighten
Inner Nut
Chain
13mm
Chain