A
757
FAULT ISOLATION/MAINT MANUAL
FLIGHT LAVATORY AND GALLEY AREA THERMOSTAT (EXAMPLE) LAVATORY AREA GALLEY AREA FLOOR LEVEL
COMPARTMENT SEE B
HEATER
BLANKET HEATER TAPE
(EXAMPLE) (EXAMPLE)
SEE E SEE A
HEATING GASKET FORWARD DRAIN AFT DRAIN MAST
PIPESEE C
SEE D FORWARD DRAIN MAST
SEE D
RIBBON HEATER TAPE
WATER
LINE
TERMINATION BUTTON
GASKET HEATER (EXAMPLE) THERMOSTAT (EXAMPLE)
CB
ADHESIVE TAPE
LEAD
WIRES
A
LEAD WIRES
JUMPER ASSEMBLY HEATER BLANKET
HEATER BLANKET
FORWARD DRAIN MAST HEATER BLANKET INSTALLATION (AFT DRAIN MAST IS ALMOST THE SAME) (EXAMPLE)
D E
Water and Drain Line Heaters - Component Location Figure 102
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30-71-00
ALL ú ú 01 Page 102 ú Mar 20/91
A
757 MAINTENANCE MANUAL
WATER SUPPLY AND DRAIN LINE HEATER TAPES - REMOVAL/INSTALLATION
_______________________________________________________________
1. General (Fig. 401)
_______
A. This procedure contains two tasks. The first task is the removal of heater tapes. The second task is the installation of heater tapes.
B. Heater tapes and blankets are wound around water supply lines and some drain lines to keep off ice.
C. Heater tapes are in the rear of the cargo compartment wall and floor panels.
D. Removal/installation procedures are the same for all units.
TASK 30-71-01-004-001
2. Remove the Heater Tapes
_______________________
A. Prepare for Removal
S 014-002
(1)
Remove the necessary floor or wall panels.
S 864-005
(2)
Open the applicable circuit breakers on the right miscellaneous relay panel, P37, and attach DO-NOT-CLOSE tags (see table).
NOTE: Circuit breaker 34B3(B), HEATERS DRAIN MST GND, is on the
____
APU/External Power Panel P34(B).
~.............................................................................. | REF | | | | NO. | TYPE OF HEATER | CIRCUIT BREAKER | ................................................................................ | B43 | FWD TOILET DRAIN GASKET | 37F5, HEATERS WATERLINE FWD| | | | | | B107 | DRAIN LINE BLANKET | 37F5, HEATERS WATERLINE FWD| | | | | | B117 | DRAIN LINE BLANKET | 37F5, HEATERS WATERLINE FWD| | | | | | B118 | DRAIN LINE TAPE | 37F5, HEATERS WATERLINE FWD| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2........…...........................….........................................1 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 防冰和排雨 CHAPTER 30 - ICE AND RAIN PROTECTION(177)
