Adjusting The C-Clamp; Adjusting The Yoke Position - ETC source four jr User Manual

A d j u s t i n g t h e C - c l a m p
The C-clamp attaches the fixture to the mounting pipe and allows you to adjust the position of the
fixture once it is mounted (see
Step 1:
Step 2:
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Step 4:
C A U T I O N :
A d j u s t i n g t h e y o k e p o s i t i o n
The Source Four jr / jr Zoom provide multi-positioning capabilities within its yoke for overall fixture
height and angle.
S e t t i n g t h e f i x t u r e h e i g h t w i t h i n t h e y o k e
The fixture is equipped with a two-position yoke for modifying the overall height in which the fixture
is mounted (see
Step 1:
Step 2:
Step 3:
Step 4:
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C-clamp
Pan screw
Figure
Tightly fasten the C-clamp to the yoke with the provided yoke bolt and lock washer.
Place the C-clamp on mounting pipe, then tighten the pipe bolt to secure it.
Loosen the C-clamp pan screw and rotate the yoke to the desired position.
Tighten the pan screw to lock the fixture.
Tighten C-clamp pipe bolt to 15-20 ft./lbs. (approximately finger tight plus up to
one-quarter turn). Do not exceed 25 ft./lbs. Do not use excessive force.
Tighten the yoke pivot bolt to 5-10 ft./lbs. (approximately finger tight plus up to
one-eighth turn). Do not exceed 15 ft./lbs. Do not use excessive force.
Figure 10). To change the height position, perform the following steps.
General use position
Yoke locking knob
Remove the yoke locking knobs, washers, and hex bolts from either side of the fixture.
Raise or lower the fixture to the desired position within the yoke.
Reinstall the yoke's hex bolts, washers, and locking knobs.
Tighten the yoke knobs to secure in position.
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Pipe bolt
Yoke bolt and
lockwasher
Yoke
9).
Figure 9
Low clearance position
Figure 10
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