HEATING AND VENTILATING SYSTEM VISUAL CHECK

HEATING AND VENTILATING SYSTEM WIRING DIAGRAM

HEATING AND VENTILATING SYSTEM VISUAL CHECK (Continued)

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 13-1.3 HEATING AND VENTILATING SYSTEM VISUAL CHECK 13-1.3 INITIAL SETUP Applicable Configurations: All References: TM 55-1520-240-23 Tools: Aircraft Mechanic's Tool Kit, Equipment Condition: NSN 5180-00-323-4692 TM 55-1520-240-23 Materials: Battery Disconnected None Electrical Power Off Hydraulic Power Off Personnel Required: Heater Compartment Acoustic 67U10 Medium Helicopter Repairer Blanket Removed TASK RESULT 1. Check air pressure switch (1). If switch (1) is loose or damaged, tighten or replace it as required. If tubes, wiring, or electrical connector to switch are damaged, repair or replace them as required. 2. Check heater fan (2). If fan (2) is loose or damaged, tighten or replace it as required. If wiring or electrical connector to fan is damaged, repair or replace it as required. 3. Check heater control relay box (3). If box (3) is loose or damaged, tighten or replace it as required. If wiring or electrical connector to box is damaged, repair or replace it as required. 4. Check temperature controller (4). If controller (4) is loose or damaged, tighten or replace it as required. If wiring or electrical connector to controller is damaged, repair or replace it as required. 5. Check air inlet duct (5). If duct (5) is loose or torn, tighten or replace it as required. 6. Check heater fuel control (6). If control (6) is loose or damaged, tighten or replace it as required. If fuel hoses, wiring or electrical connector to control is damaged. repair or replace it as required. 7. Check heater ignition unit (7). If ignition unit (7) is loose or damaged, tighten or replace it as required. If wiring, electrical connector. or shielded lead (8) to ignition unit is damaged, repair or replace it as required. 8. Check boater (9). If heater (9) is damaged, replace it. 9. Check exhaust shroud (10). If shroud (10) is damaged, repair or replace it as required. 10. Check three temperature switches (11). If any switch ( 1 ) is loose or damaged, tighten or replace it as required. If wiring to any switch is damaged, repair or replace it as required. 13-4 GO TO NEXT PAGE

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