18 - English
Fig. 20
Fig. 19
Tighten
Loosen
3/8 in. to
1/2 in.
Base of
the nut
Edge of
the brace
Rail
Edge
CENTER OF RAIL ASSEMBLY
ATTACHING RAIL ASSEMBLY TO POWER
HEAD
See Figures 22 - 25.
Locate the following items:
Power Head
Bracket (2)
Nut (7/16 in.) [4]
Sprocket
Rail Assembly
Place the power head on a towel or the packaging material
with the light cover facing down. Do not place the unit
directly on hard surfaces as this may damage the light
cover and motion sensor.
Fig. 21
Fig. 22
Belt
1/8 in.
Gap
Sprocket
Round
Side
Shaft
ADJUSTING THE BELT TENSION
See Figures 18 - 21.
Using a 1/2 in. socket, turn the tension nut clockwise
to tighten the belt and counter-clockwise to loosen it.
Adjust the nut until there is approximately 3/8 to 1/2 in.
of exposed thread showing above it or until the base of
the nut is aligned with the edge of the brace.
When properly tensioned, there should be about a
1/8 in. gap between the belt and the edges of the rail near
the center of the rail assembly.
ASSEMBLY