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A 747-400 MAINTENANCE MANUAL
(2) S 975-093Use the hot wire anemometer and the adaptor and write the air velocity in zone 1 at each orifice in the forward compartment (2 locations). - (STA 480, LBL 44.0) feet per minute - (STA 660, LBL 44.0) feet per minute.
(3) S 735-094Make sure the air velocity values are more than 150 feet per minute at each orifice.
(4) S 975-095Use the hot wire anemometer and the adaptor and write the air velocity in zone 2 at each orifice in the forward compartment (2 locations). - (STA 740, LBL 44.0) feet per minute - (STA 920, LBL 44.0) feet per minute.
(5) S 735-096Make sure the air velocity values are more than 150 feet per minute at each orifice.
(6) S 975-097Use the hot wire anemometer and the adaptor and write the air velocity in zone 3 at each orifice in the aft compartment (2 locations). - (STA 1540, LBL 44.0) feet per minute - (STA 1800, LBL 44.0) feet per minute.
(7) S 735-098Make sure the air velocity values are more than 150 feet per minute at each orifice.
(8) S 975-099Use the hot wire anemometer and the adaptor and write the air velocity in zone 4 at each orifice in the aft compartment (2 locations). - (STA 1860, LBL 44.0) feet per minute - (STA 2125, LBL 36.0) feet per minute.
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A
747-400 MAINTENANCE MANUAL
S 735-100
(9)
Make sure the air velocity values are more than 150 feet per minute at each orifice.
S 865-101
(10)
Release the pressure from the crossover duct or the alternative pressure source (AMM 36-00-00/201).
NOTE: If you used an alternative air source, remove the air source.
____ Connect the hoses at STA 1490. Torque the 3/4" ejector bleed air inlet (428 to 472 in. lb.) and make a mark on it.
TASK 26-16-00-735-260
8. Smoke Test
A. Special Tools and Equipment
(1)
Rosco Fog/Smoke Machine - Model 1600 or equiv.
Rosco Laboratories Inc.
52 Harbor Avenue
Stamford, CT 06902
Phone number: (800) 767-2669 or (203) 708-8900
FAX number: (203) 708-8919
(This is the preferred smoke source)
(2)
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
(3)
Hot Wire Anemometer (Air Velocity Meter) - Model 1650, 8350, 8352, 8355, 8357, or 8360 TSI Incorporated 500 Cardigan Road Shoreview, Minnesota 55216 Mailing Address: P.O. Box 64394
St. Paul, Minnesota 55164 Telephone Number: 800-876-9874 Fax Number: 612-490-2874
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(4)
G26005 - Adaptor, Hot Wire Anemometer
Boeing
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatic System
C.
Access
(1)
Location Zones
122 Forward Cargo Compartment Forward Half RH
142 Aft Cargo Compartment RH
221 Control Cabin LH
222 Control Cabin RH
D.
Prepare for System Test
S 865-250
(1) Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
(a)
6H1, FIRE EXTINGUISHER ENG 1&3 B
(b)
6H2, FIRE EXTINGUISHER ENG 1&3 A
(c)
6H3, FIRE EXTINGUISHER ENG 2&4 B
(d)
6H4, FIRE EXTINGUISHER ENG 2&4 A
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