Boeing 737-600 - Subtask 30-71-00-020-005; Subtask 30-71-00-020-006

(Continued)
Reference Description
COM-2531 Clamp-On- Current Meter
737-600, -700, -800
Part #: 324 Supplier: 89536
Part #: I800 Supplier: 89536
Part #: LH41A Supplier: 89536
Opt Part #: 321 Supplier: 89536
Opt Part #: 322 Supplier: 89536
Opt Part #: 80I-600A Supplier: 89536
Opt Part #: MODEL 33 Supplier: 89536
Opt Part #: MODEL 36 Supplier: 89536
D. Location Zones
Zone Area
143 Area Below Aft Cargo Compartment - Left
144 Area Below Aft Cargo Compartment - Right
E. Procedure
SUBTASK 30-71-00-020-005
WARNING
BE CAREFUL WHEN YOU DO WORK AROUND ENERGIZED PANELS. HIGH
VOLTAGES CAN KILL YOU.
(1) Open these circuit breakers and install safety tags:
CAPT Electrical System Panel, P18-3
Row Col Number Name
D 18 C01463 WASTE/WTR LINE HEATERS
E 3 C00234 HEATERS DRAIN MAST GND
E 4 C00700 HEATERS DRAIN MAST AIR
E 5 C00233 HEATERS DRAIN
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 412, 501, 507, 512, 513,
516, 518, 531, 532, 556, 557, 560-562, 567-569, 581, 583, 585, 588-590, 592-599, 601-603, 606, 607,
610-615, 620, 625-627, 671, 672, 691-699, 803-813, 821, 822, 831-838, 841, 842, 851, 852, 854-858,
861-863, 871-874, 947, 948, 968-973, 980-999
E 18 C01473 HOSE HEATERS
ILF 401, 402, 405, 406, 409, 410, 416, 424, 425, 427-429, 451, 452, 491-500, 502-504, 508-510, 514,
515, 519, 520, 523-528, 530, 533, 535-537, 541, 542, 552-555, 559, 563, 564, 571-577, 686, 703,
707-710
F 16 C01473 HOSE HEATERS
ILF ALL
F. Drain Heaters - Tryout
NOTE: This tryout is to make sure that the power to the drain heaters is in a zero energy state.
SUBTASK 30-71-00-020-006
(1) Get access to the heater and controlling thermostat (if applicable).
(a) Use the schematic (SSM 30-71-11) to find the location of the heater and thermostat.
(b) Use Figure 30-71-00-990-801 to identify access requirements.
(c) Do the necessary tasks to get access to the heater and thermostat.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-71-00
Page 203
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL