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2420 FIELD HOSPITAL SURGICAL LIGHT
2. Service Installation Check
6.
Raise mounting
plate ring in direction exten-
sion arm drifts toward. Lower opposite side of
ring if necessary.
7.
Check again for E1 type drift.
8.
Tighten all leveling nuts.
Adjustment E2
9.
Tighten
friction
adjustment
set
screw
until
horizontal drift is eliminated at all locations of
travel.
FRICTION
ADJUSTMENT
Figure 8.
EXTENSION ARM FRICTION ADJUSTMENT
LIGHT PERFORMANCE
CHECK
Performance checks are required to insure cor-
rect and safe operation of the light. These checks
and any necessary adjustments should be done by
Castle
Division
Service
personnel.
Refer
to the
Repair
Section
of this
manual
for
any
service
corrections.
Optical Safety Check
1.
Remove lens cover.
2.
Ensurethatshipping material has been removed
from around blue-green heat filter.
3.
Check that heat filter is in place and that three
spring wires are in place.
4.
Replace lens cover.
Check ON/OFF Switch
Check
Move
lighthead
through
maximum
travel
at
both pivots using integral handles. Observe that the
light does not flicker or go out. Check for positive
action of the switch.
Service Correction
1.
Ensure that all lighthead wires are firmly at-
tached to flat terminals and that terminals are
secure.
2.
Replace ON/OFF switch if required.
Optical Performance Check
The light should have a5-1/2 to7 inch diameter
light pattern at 36 inches below the outer edge of the
lens cover. The illumination should be 3000 to 5500
footcandles at 120V, measured at the center of the
pattern.
Intensity Control Check
1.
Turn intensity control to a middle position.
Snap intensity control toggle switch to ON.
Snap lighthead switch to ON. The lamp should
light.
4.
Rotate intensity control counterclockwise. The
light should dim.
5.
Rotate the intensity control clockwise through
its maximum travel. Light intensity should vary
smoothly without falter or rough spots.
DATE: 9/87
30840
REPLACES: 2/85
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