TASK 26-14-00-755-092
4. System Smoke Test_________________
A. Special Tools and Equipment
(1)
Rosco Fog/Smoke Machine - Model 1600 or equiv.
Rosco Laboratories Inc.
52 Harbor View Avenue
Stamford, CT 06902
Phone: 800-767-2669 or 203-709-8900
Fax: 203-709-8919
(Preferred source)
(2)
Ventilation Smoke Tube (Part #458481)
Mine Safety Appliance Co.
P.O. Box 426
Pittsburgh, PA 15230
Phone: (412) 967-3000
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatic System
C. Access
(1) Location Zone
221 Control Cabin LH
222 Control Cabin RH
D. Prepare for the System Test
S 865-068
(1) Pressurize the pneumatic crossover duct (AMM 36-00-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-247
(2)
Close these circuit breakers:
(a) P7 Overhead Circuit Breaker Panel 1) 7F23 LANDING GEAR DSP & CONT ALTN 2) 7H16 CARGO SMOKE - MAIN DECK ZN 1-8 DET A 3) 7H17 CARGO SMOKE - MAIN DECK ZN 1-8 DET B 4) 7H18 CARGO SMOKE - MAIN DECK ZN 9-16 DET A 5) 7H19 CARGO SMOKE - MAIN DECK ZN 9-16 DET B
E.
Smoke Test
S 865-237
WARNING:_______MAKE SURE THAT YOU DO NOT BREATHE THE SMOKE. MAKE SURE THAT YOU USE EYE PROTECTION. IF YOU USE THE VENTILATION SMOKE TUBE, DO NOT LET THE SMOKE TOUCH YOUR SKIN. THE SMOKE FROM THE SMOKE TUBE CAN CAUSE CORROSION TO THE MATERIALS IN THE SMOKE DETECTION SYSTEM. MAKE SURE THAT THERE IS SUFFICIENT AIR MOVEMENT. IF THE AIR MOVEMENT IS NOT SUFFICIENT OR YOU HAVE RESPIRATORY PROBLEMS, USE AN APPLICABLE RESPIRATOR. IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE SMOKE CAN CAUSE INJURIES OR DAMAGE TO EQUIPMENT.
(1)
Use a smoke source to put the smoke adjacent to the Zone 1 orifice at STA 333, RBL 3.7 in the main deck cargo compartment.
S 735-061
(2)
Look for these effects:
(a)
The red MAIN DECK CARGO warning light on the P5 panel goes on.
(b)
The red master WARNING lights on the P72 panel go on.
(c)
The alarm bell operates.
(d)
The EICAS warning message "FIRE MAIN DECK FWD" is displayed.
(3)
Stop the smoke source.
S 865-062
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 735-063
(4) Look for these effects:
(a)
The EICAS warning message goes out of view.
(b)
The MAIN DECK CARGO warning light goes off.
(c)
The WARNING lights go off.
(d)
The alarm bell stops.
S 865-227
(5) Use this table and do the test again for the other stations: ~............................................................... | ZONE | LOCATION | EICAS MESSAGE | ................................................................. | 2 | STA 505, RBL 3.0 | FIRE MAIN DECK FWD | | 3 | STA 625, RBL 3.7 | FIRE MAIN DECK FWD | | 4 | STA 770, RBL 3.0 | FIRE MAIN DECK FWD | | 5 | STA 925, RBL 3.0 | FIRE MAIN DECK FWD | | 6 | STA 1061.5, RBL 3.0 | FIRE MAIN DECK MID | | 7 | STA 1226.5, RBL 3.0 | FIRE MAIN DECK MID | | 8 | STA 1323.5, RBL 3.0 | FIRE MAIN DECK MID | | 9 | STA 1442.4, RBL 5.0 | FIRE MAIN DECK MID | | 10 | STA 1553, RBL 3.0 | FIRE MAIN DECK AFT | | 11 | STA 1697, RBL 3.0 | FIRE MAIN DECK AFT | | 12 | STA 1833.8, LBL 66.2 | FIRE MAIN DECK AFT | | 13 | STA 1841, RBL 3.0 | FIRE MAIN DECK AFT | | 14 | STA 1985, RBL 3.0 | FIRE MAIN DECK AFT | | 15 | STA 2129, RBL 3.0 | FIRE MAIN DECK AFT | | 16 | STA 2273, RBL 3.0 | FIRE MAIN DECK AFT | 2........….........................…............................1
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