TM 9-4120-408-14
5-29. CONDENSATE LEVEL WARNING SWITCH MAINTENANCE
This task covers:
Test
Install
Remove
INITIAL SETUP:
Tools
Materials/Parts (Continued)
Tool Kit, Service Refrigeration Unit, Appendix
B, Section III, Item 1
Recovery and Recycling Unit, Refrigerant,
Regulator, Nitrogen, Appendix B, Section III,
Item 9
Manifold Gage, Charging and Testing, Appendix
Refer to TM 9-4120-408-24P for part numbers of
items to be replaced.
Leak Detector, Appendix B, Section III, Item 17
Equipment Conditions
Materials/Parts
General Safety Instructions
Do not work on equipment without
following standard shop safety precautions.
CAUTION
Dehydrator must be replaced every time the air conditioner lines are exposed to the atmosphere.
Failure to obey this caution may result in equipment damage.
a. Test.
Test continuity at
terminal board, TB4, (Figure 5-26, 1)
positions 1
and 2.
When condensate drain pan (2) is
full, resistance should be 0. When condensate drain pan (2) is empty, resistance should be infinite. Replace defective
condensate level warning switch (3).
b. Remove.
(1)
Remove two screws (4) and tag and remove three electrical leads (5).
(2)
Remove and discard tiedown straps from electrical leads (5).
(3)
Loosen four nuts (6) and remove two electrical leads (5) from four cushion clamps (7).
(4)
Loosen switch retaining nut (8) and remove condensate level warning switch (3) from condensate drain pan (2).
c. Install .
(1) Install condensate level warning switch (3) in condensate drain pan (2) and secure with retaining nut (8).
(2) Install two electrical leads (5) in four cushion clamps (7) and tighten four nuts (6).
Change 1 5-71