Y1-03-0146 Rev. D
4
b.
Turn "OFF". Slide switch down until it stops. The unit will stop operating.
c.
White Light. With the flashguard shield in the retracted (stored) position, slightly
raise the IR filter and rotate it either left/right 90°, push filter in to lock into place.
(Figure 2)
d.
IR Light. With the flashguard shield in the retracted (stored) position, insure that
the IR filter is resting on the top (vertical) end of the light over the clear lens, then
push filter down to lock into place. (Figure 3)
e.
Blue Light. With the flashguard shield in the retracted (stored) position, slightly
raise the IR filter and rotate it either left/right 90°. Then snap it in toward the side
of the light to lock it into position. While 'Holding the main body case with either
hand, grasp the flashguard shield with the other hand and pull it up until it stops
or a slight locking sound is detected, then release. This is an indication that the
Blue filter has been released and fully engaged to its proper operating position.
(Figure 4)
5. Performance
Testing
a.
Light Leakage Test
With the IR filter in its operation position (Figure 3), turn the switch ON and
observe that no light is transmitted through the sides of the case or the flashguard
shield. Turn switch OFF. No light leakage is allowed in the IR mode. If
necessary, replace the flashguard shield assembly and repeat the test. If a new
flashguard shield fails to remedy the problem, the light is to be condemned and
discarded in accordance with local procedures.
b.
Flash Rate Test.
(1) Initial. A ten minute MANUAL flash rate test is a one-time requirement for
all new MS-2000(M) lights received from supply stock. This test is required for
initial acceptance of the light and is conducted to insure that the light is capable of
sustained operations. Select the White Light function (Figure 2), turn the switch
to ON and observe that the strobe lamp flashes. Allow the light to flash for nine
(9) minutes, and then manually count the flash rate of the strobe during the final
one minute of the test. This rate should be 50 ± 10 flashes. It is not necessary to
directly observe the light flashes during this evaluation. This inspection should
be performed in a dark room or enclosure. If any light fails to meet the 50
± 10
flash rate requirements, check the batteries and, if necessary, replace both
batteries and repeat the test. Additionally, the battery contacts in the battery well
should be checked and, if necessary, cleaned with a small brush. Hold vertical
while using brush so that any debris falls out of the light. Repeat the test again.
If battery replacements or cleaning contacts fail to correct the problem, discard
the light in accordance with local procedures.
(2) Periodic. Normally this test is accomplished in conjunction with other life
support survival kit / vest test requirements and/or as required by specific
MAJCOM directives. This test may be accomplished MANUALLY or
Summary of Contents for 3990
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