DRAIN AND WATER SUPPLY LINE HEATING - ADJUSTMENT/TEST
1. General
A. This procedure has general instructions for testing the water supply, drains, and waste anti-icing
system. This procedure includes these tests:
(1) Drain mast heater ground and air mode tests
(2) Heater tests
TASK 30-71-00-720-801
2. Drain Mast Heater Ground and Air Mode Test
A. References
Reference Title
24-22-00-860-813 Supply External Power (P/B 201)
32-09-00-840-801 Prepare to Put the Airplane in the Air Mode (P/B 201)
32-09-00-860-801 Put the Airplane in the Air Mode (P/B 201)
32-09-00-860-802 Return the Airplane to the Ground Mode (P/B 201)
38-31-01-000-801 Forward Drain Mast Removal (P/B 401)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
COM-1572 Thermometer - Infrared, Intrinsically Safe
737-600, -700, -800
Part #: 568 Ex Supplier: 89536
Opt Part #: DHS24XC-FM Supplier: 08086
Opt Part #: DHS24XF-FM Supplier: 08086
Opt Part #: EX-MP4 A Supplier: 3GT36
Opt Part #: IR-16L3 IS Supplier: 75037
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
C. Location Zones
Zone Area
143 Area Below Aft Cargo Compartment - Left
D. Prepare for the Procedure
SUBTASK 30-71-00-860-001
(1) Do this task: Supply External Power, TASK 24-22-00-860-813.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-71-00
Page 501
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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