TM 9-4120-408-14
4-29. FRONT (AIR INLET) EVAPORATOR EMI/RFI VENTILATION PANEL MAINTENANCE. (Continued)
c. Inspect.
(1) Inspect evaporator EMI/RFI ventilation panel (2) for hole(s) equivalent to two "honey combs" or larger.
(2) Inspect evaporator EMI/RFI ventilation panel (2) for deteriorated, damaged, or missing EMI gasket material (3).
(3) Inspect all mounting hardware for damage.
(4) Replace all damaged or defective components.
d. Install.
(1) Position evaporator EMI/RFI ventilation panel (2) on evaporator assembly (4) and secure with 22 screws (1).
(2) Follow on maintenance: refer to paragraph 4-28 and install air filter mounting brackets.
4-30. DIFFERENTIAL PRESSURE SWITCH TEST
This task covers:
Test Only
INITIAL SETUP:
Tools
General Safety Instructions
Tool Kit, Service Refrigeration Unit,
Do not work on equipment without
following standard shop safety
procedures.
Equipment Conditions
Air Conditioner running, paragraph 2-5.
Front (Air Intake) EMI/RFI Ventilation
Panel removed, paragraph 4-29.
a. Test. Cover filter end of tube (Figure 4-24, 1) and ensure air filter warning light (on control module) turns on. If air
filter warning light does not turn on or remains on after uncovering end of tube (1) notify direct support maintenance.
4-49
