TM 9-4120-395-14&P
4-42. FUSE LINKS.
This task covers:
a. Inspection
b. Testing
c. Removal
d. Installation
INITIAL SETUP:
Tools:
Tool Kit, service, refrigeration unit
Equipment Conditions:
Power off at power source.
General Safety Instructions:
Disconnect input power to the unit before performing any internal maintenance.
Voltages used can kill. Shutting the unit off at the thermostat does not
disconnect unit power.
a.
Inspection.
(1)
Remove the three screws (1, Figure 4-38) and lift off the heater access door (2) on the upper right side of
the air conditioner.
(2)
Check the wiring and fuse links (3) for damage and loose mounting nuts (4).
(3)
Replace the heater access door and secure with the three screws.
b.
Testing.
(1)
Remove the three screws (1, Figure 4-38) and lift off the heater access door (2) on the upper right side of
the air conditioner.
(2)
Use the multimeter to check the fuse links (3) An open or direct short to ground indicates a defective fuse
link which must be replaced.
(3)
Install the heater access door and secure with the three screws.
c.
Removal.
(1)
Remove the three screws (1, Figure 4-38) and lift off the heater access door (2) on the upper right side of
the air conditioner.
(2)
Tag and remove the wire fuse links (3).
(3)
Remove the mounting nuts (4) using nutdriver and lift out the fuse links.
d.
Installation.
(1)
Place the fuse links (3, Figure 4-38) into position in the heater assembly (2) and secure with the mounting
nuts (4).
(2)
Connect the wires as marked and remove the tags.
(3)
Install the heater access door (2) and secure with the three screws (1).
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