S 215-095

 (2)  
Do a vacuum measurement:

 (a)  
Examine the tubes from the smoke detection assemblies to the orifices in the cargo compartment ceilings. Inspect for sources of leakage.

 (b)  
Measure the vacuum at each orifice in each cargo compartment. Inspect for a minimum measure of 0.5 inches of water (vacuum) at each orifice.

 (c)  
Open these circuit breakers on the P70 panel, and attach DO-NOT-CLOSE tags: 1) 70B10, SMOKE DET BLOWER 1 2) 70B12, SMOKE DET BLOWER 3

 (d)  
ON GUN 001-003 WITHOUT SL 26-9A; after 10 to 40 seconds, measure the vacuum at each orifice in each cargo compartment. Inspect for a minimum of 0.5 inches of water (vacuum) at each orifice.

 (e)  
ON GUN 004-999 AND AIRPLANES WITH SL 26-9A; After 60 to 90 seconds, measure the vacuum at each orifice in each cargo compartment. Inspect for a minimum measure of 0.5 inches of water (vacuum) at each orifice.

 (f)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P70 panel: 1) 70B10, SMOKE DET BLOWER 1 2) 70B12, SMOKE DET BLOWER 3

 S 865-096
 (3)  Open for one second, and then close this circuit breakers on the P11 panel, to set the system:
 (a) 11S35, CARGO SMOKE BLOWER CONT or FIRE DET CARGO CONT
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 S 755-097
 (4)  Make sure that within 90 seconds, these EICAS messages do not show on the bottom display.
 (a)  
FWD CARGO DET 1 or FWD CARGO DET 2.

 (b)  
AFT CARGO DET 1 or AFT CARGO DET 2.

 (c)  
CARGO DET AIR.

 (d)  
FWD DET FAN or AFT DET FAN.

 S 025-216
 (5)  
Close cargo door (AMM 52-34-00/201).

 S 865-153

 (6)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 26-16-00-735-147
 4. System Test - Cargo Compartment Smoke Detection
_______________________________________________
 A. Equipment
 (1)  Smoke Source
 (a)  
Rosco Fog/Smoke Machine - Model 1500 or 1600 Rosco Laboratories Inc. 52 Harbor View Stamford, CT 06902 Phone Number: (800) 767-2669 or (203) 708-8900 FAX Number: (203) 708-8919

 (b)  
Ventilation Smoke Tube (Part #458481) Mine Safety Appliance Co.

 P.O. Box 426 Pittsburgh, PA 15230 Phone Number: (412) 967-3000 FAX Number: (412) 967-3161
 B. References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 31-41-00/501, Engine Indication and Crew Alerting System (EICAS)

 (3)  
AMM 31-51-00/501, Warning System

 (4)  
AMM 33-16-00/501, Master Dim and Test System

 (5)  
AMM 52-34-00/201, No. 1 and No. 2 Cargo Doors

 C. Access
 (1)  Location Zones
 121/122 Forward Cargo Compartment
 153/154 Aft Cargo Compartment
 211/212 Flight Compartment

 D. Prepare for Test
 S 865-148
 (1)  Supply electrical power (AMM 24-22-00/201).
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 (2)  Make sure these systems operate:
 (a)  
EICAS (AMM 31-41-00/501).

 (b)  
Warning System (AMM 31-51-00/501).

 (c)  
Master Dim and Test System (AMM 33-16-00/501).

 S 755-150
 (3)  Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:
 (a)  
11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1

 (b)  
11B27, FIRE DETECTION CARGO 2 or CARGO SMOKE DET 2

 (c)  
11S35, FIRE DET CARGO CONT or CARGO SMOKE BLOWER CONT
　
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