TM  55-1520-240-T 5-3.4 ENGINE AIR PARTICLE SEPARATOR PROVISIONS  OPERATION  CHECK 16-3.4 INITIAL  SETUP Applicable   Configurations: Helicopters  with  Engine  Air Particle  Separator  Provisions Tools: Electrical Repairer’s Tool Kit, NSN   5180-00-323-4915 Multimeter Materials: None Personnel Required: Aircraft  Electrician  (2) References: TM  55-1520-240-23 Equipment Condition: TM   55-1520-240-23: Battery  Connected Electrical  Power  On Hydraulic  Power  Off Visual  Check  of  Engine  Air  Particle  Separator Provisions  Performed TASK RESULT CHECK  CIRCUIT  BREAKERS 1. 2. 3. 4. 5. 6. 7. On NO. 1 PDP extension box, close the following circuit breakers: EAPS 1 FAN (1) EAPS 1 FAN CONT (2) EAPS 1 BYPASS DOORS (3) On NO. 2 PDP extension box, close the following circuit breakers: EAPS 2 FAN (4) EAPS 2 FAN CONT (5) EAPS 2 BYPASS DOORS (6) On NO. 1 Engine EAPS control box (7), press to test EAPS BYPASS DOORS OPEN light (8). On NO. 2 Engine EAPS control box (9), press to test EAPS BYPASS DOORS OPEN light (10). ON EAPS control panel (11) set EAPS ENG 1 FAN switch (12) to ON. At receptacle 151J1 (13) check for 115VAC between pin A and ground,  pin B and ground, and pin P and ground. On EAPS control panel (11) set EAPS ENG 1 DOORS switch (14) to OPEN. At receptacle 151J1 (13) check for 28VDC between pin U and ground. Check  for  ground  on  pin  a. On EAPS control panel (11) set EAPS ENG 1 DOORS switch (14) to CLOSE. At receptacle 151J1 (13) check for 28VDC between pin  a and ground. Check for ground on pin U. 16-116 If any circuit breaker opens, close it. If EAPS 1 FAN circuit breaker (1) opens again, go to task  4-5. If EAPS 1 FAN CONT circuit breaker (2) opens again, go to task 4-5. If EAPS 1 BYPASS DOORS circuit breaker (3) opens again, go to task 4-5. If any circuit breaker opens, close it. If EAPS 2 FAN circuit breaker (4) opens again, go to task 4-6. If EAPS 2 FAN CONT circuit breaker (5) opens again, go to task 4-6. If EAPS 2 BYPASS DOORS circuit breaker (6) opens again, go to task 4-6. EAPS BYPASS DOORS OPEN light (8) shall come on momentarily. If it does not, replace bulb. Press to test light again. If light still does not come on, go to task 4-7. EAPS BYPASS DOORS OPEN light (1 O) shall come on. If it does not, replace bulb. Press to test light again. If light still does not come on, go to task 16-3.7. 115VAC should be present on pins A, B and P. If 115VAC is not present on any pin, go to task 16-3.8. If 28VDC is not present on pin U, go to task 16-3.9. If ground is not present on pin a, go to task 16-3.10. If 28VDC is not present on pin a, go to task 16-3.11. if ground is not present on pin  U, go to task  16-3.12. TASK RESULT 8. 9. 10, 11. 12. 13. 14. 15. Check for ground on receptacle 151J1 pins G, D and V. At receptacle 151J1 (13) place a jumper wire be- tween pins F & G. On NO. 1 PDP, close CAUTION PNL LIGHTING circuit breaker (15). On EAPS control panel (11), set EAPS ENG 2 FAN switch (17) to ON At receptacle 151J2 (18), check for 115VAC between pin A and ground, pin B and ground, and pin P and ground. ON EAPS control panel (14) set EAPS ENG 2 DOORS switch (19) to OPEN. At receptacle 151J2 (18) check for 28VDC between pin U and ground. Check for ground on pin a. On EAPS control panel (14) set EAPS ENG 2 DOORS switch (19) to CLOSE. At receptacle 151J2 (18) check for 28 VDC between pin a and ground. Check for ground on pin U. Check for ground on receptacle 151J2 pins G, D and V. At receptacle 151  J2 (18), place a jumper wire be- tween pins F & G. Remove jumper wires from receptacles 151J1 and 151J2. If ground is not present, repsir or replace wire be- tween receptacle and ground stud. On Master Caution Panel, EAPS 1 FAIL capsule (16) shall come on. If it does not, go to task 16-3.13. 115VAC shall be present on pins A, B and P. If 115VAC is not present on any pin, go to tash If 28VDC is not present on pin U, go to task If ground is not present on pin a, go to task 16-3.14. 16-3.15. 16-3.16. If 28VDC is not present on pin a, go to task 16-3.17 If ground is not present on pin U, go to task 16-3.18. If ground is not present, repair or replace wire be- tween receptacle and ground stud, On master caution panel, EAPS 2 FAIL capsule (20) shall come on. If it does not, go to task 16-3.19. FOLLOW ON MAINTENANCE: Turn Off Electrical Power Disconnect   Battery