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TM 9-4120-367-14
TM 07592B-14/1
Location/Item
LPCO Jumper
Action
Disconnect power supply to air conditioner.
Remove cover from top of evaporator section.
Remove screws and pull control panel from
frame. Use care to avoid breaking or kinking the
sensing line.
Place jumper between terminals 1 and 2 of low
pressure contact.
Fabricate CAUTION tag to place on control panel
to show that low pressure cutout has been by-
passed.
Push control panel back into frame. Use care to
avoid breaking or kinking sensing line and the
LPCO jumper.
Replace top cover.
Connect power supply.
Remove jumper when outside temperature in-
creases to 40°F (5 °C).
Remarks
Shut off power before begin-
ning any maintenance. High
voltage can kill.
Sensing line is copper tube
connected between TEMPER-
ATURE SELECTOR and
SENSING BULB which is be-
hind the return air louver.
Check that jumper will not
short out against frame of con-
trol panel.
Air conditioner low pressure
cutout has been bypassed.
Compressor will not shut off
under low suction pressure
conditions.
3-25/(3-26 blank)
3.8 LOW PERSSURE CUTOUT JUMPER. - Continued
a.
b.
c.
d.
e.
f .
g.
h.
i .
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