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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-83. HIGH TEMPERATURE SWITCH (S6).
This task covers:
a.
Inspection
b.
Removal
c.
Testing
d.
Installation
INITIAL SETUP:
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Material:
Heat gun (Item 2, Appendix E)
Equipment Conditions:
WARNING
Disconnect input power to the air conditioner before performing any internal maintenance. Voltages
used can KILL. Shutting the unit off at the control panel does not disconnect unit power.
1.
Disconnect air conditioner input power at source.
2.
Remove left front evaporator panel (para 4-23).
INSPECTION
Check high temperature switch (3) for corrosion, loose electrical connections or missing mounting hardware. If damaged,
replace switch (see Figure 4-83).
REMOVAL
1
Tag and disconnect leads.
2
Remove two screws (4), locknuts (2), and four flat washers (1).
3
Remove switch (3).
TESTING
NOTE
For full operational test of switch, an external heat source is required. Switch should open (no continuity
across contacts) at 130 degrees F (54.4°C).
With switch at room temperature, using multimeter, check for continuity between switch terminals. If continuity is not
indicated, replace switch.
INSTALLATION
1.
Place switch (3) in mounting position.
2.
Install two screws (4), four flat washers (1), and two locknuts (2).
3.
Reconnect leads and remove tags.
4-162
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