Install Belt; Set The Belt Tension - Chamberlain Security+ 9200C-2K Owner's Manual

Assembly Step 4
Install the Belt & Set the Belt Tension
• Drop the notched side of the trolley clip into the
retaining slot on top of the trolley (see Figure 1).
• Grasp the clip connector at the end
of the belt and slip it through the belt
pulley bracket from behind, around
the pulley and toward the trolley.
• Fasten the belt clip connector to the
trolley clip with a master link:
a. Push pins of master link bar
through holes in trolley clip and
belt clip connector.
b. Push master link cap over pins
and past pin notches.
c. Slide clip-on spring over cap and
onto pin notches until both pins are
securely locked in place.
• With the trolley against the screwdriver,
dispense the belt along the rail and
around the opener sprocket. The sprocket
teeth must engage the belt (Figure 2).
• Use the second master link to connect the belt
to the flat end of the trolley threaded shaft (Figure 1).
Check to make sure the belt is not twisted.
• Remove the screwdriver.
Figure 2
• Insert the trolley threaded shaft through the hole
in the trolley.
• Hold the belt at the trolley shaft to avoid twisting
as you thread the spring/trolley nut by hand on the
shaft until finger tight against the trolley (Figure 3).
Do not use any tools.
Figure 3
Belt Clip
Connector
Slip Belt Clip Connector
around Pulley Bracket
from this direction
and attach to trolley clip
Opener
Sprocket
Trolley
Trolley
Threaded
Shaft
Spring
Trolley Nut
Serious injury can result if fingers become
entangled in moving opener sprocket. Attach
belt cap retainer securely. Never operate
opener while your hand is near the opener
sprocket.
Figure 1
Master Link
Clip-On Spring
Belt
Pulley
Figure 4
• Insert a screwdriver tip into one of the nut ring slots
and brace it firmly against the trolley. (Figure 4)
• Place a 7/16" open end wrench on the square end.
Rotate about 1/4 turn until the spring releases and
snaps the nut ring against the trolley (Figure 5).
This extends the spring for optimum belt tension.
Figure 5
Trolley Nut Ring
BEFORE
1"
10
WARNING
Master
Link Cap
Trolley
Clip
Trolley
Threaded Shaft
Pin Notch
Master
Link Bar
Belt
Clip Connector
Nut
Ring
Square End
Trolley
Trolley
AFTER RELEASE
1-1/4"
Pin Notch
Master
Link Bar
Trolley
Threaded
Shaft
Nut Ring
Slots
Nut Ring