Installation of the Waste-Water Ice-Protection Control Unit

TASK 30-71-34-400-001-A
Installation of the Waste-Water Ice-Protection Control Unit

NOTE: The procedure is the same for all the control units.

ZONE: 130
ZONE: 160
ZONE: 170
FIN: 140DU ** ON A/C NOT FOR ALL
FIN: 15DU
FIN: 23DW ** ON A/C NOT FOR ALL
FIN: 25DU ** ON A/C NOT FOR ALL
FIN: 3DW
FIN: 33DW ** ON A/C NOT FOR ALL
FIN: 35DU ** ON A/C NOT FOR ALL
FIN: 5DU
FIN: 53DW ** ON A/C NOT FOR ALL
FIN: 80DU ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
No specific	AR	ACCESS PLATFORM 2M (6 FT)
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
No specific	AR	ACCESS PLATFORM 2M (6 FT)
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
No specific	1	ACCESS PLATFORM 2M (6 FT)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
No specific	1	ACCESS PLATFORM 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
170	AFT CAB U/FLOOR COMPT AFT BHD OF BULK
FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
132KW
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
162CW
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
162CW
FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
132JW
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
131MW

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
Control Unit 103DW ** ON A/C NOT FOR ALL
Control Unit 5DU/15DU/35DU ** ON A/C NOT FOR ALL
Control Unit ** ON A/C NOT FOR ALL
Control Unit 5DU/15DU/140DU ** ON A/C NOT FOR ALL
Control Unit 5DU/15DU/35DU/3DW ** ON A/C NOT FOR ALL
Control Unit 5DU/15DU/25DU/35DU/80DU/140DU ** ON A/C NOT FOR ALL
FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 30-71-00-710-002-A	Operational Test of the Waste-Water Ice-Protection Heater-Elements
FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 30-71-00-710-002-A	Operational Test of the Waste-Water Ice-Protection Heater-Elements
FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 30-71-00-710-001-A	Operational Test of the Drainmast Ice Protection
FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [25DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 30-71-00-710-001-A	Operational Test of the Drainmast Ice Protection
FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 30-71-00-710-002-A	Operational Test of the Waste-Water Ice-Protection Heater-Elements
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 30-71-00-710-002-A	Operational Test of the Waste-Water Ice-Protection Heater-Elements
FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump

3. Job Set-up
Subtask 30-71-34-860-050-C ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the FWD cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(b) Make sure that the CARGO COMPT light switch 6LU is set to ON.
(c) Make sure that the sidewall panel 131MW is removed.
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the AFT cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
(b) Make sure that the CARGO COMPT light switch 8LU is set to ON.
(c) Make sure that the sidewall panel 162GW is removed.

Subtask 30-71-34-860-050-E ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position below the forward cargo-compartment.
(c) Make sure that the cargo-copartment light switch 6LU is set to ON.
(d) Make sure that the sidewall panel 131MW is removed.
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position below the forward cargo-compartment.
(c) Make sure that the cargo-compartment light switch 8LU is set to ON.
(d) Make sure that the sidewall panel 162CW is removed.

Subtask 30-71-34-860-050-G ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) is put in position.
(c) Make sure that cargo-compartment light switch 6LU is set to ON.
(3) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that sidewall panel 131MW is removed (Ref. AMM TASK 25-54-12-000-003).
(4) FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that sidewall panel 132KW is removed (Ref. AMM TASK 25-54-12-000-003).
(5) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) is put in position.
(c) Make sure that cargo-compartment light switch 8LU is set to ON.
(d) Make sure that sidewall panel 162CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 30-71-34-860-050-N ** ON A/C NOT FOR ALL

Make sure that sidewall panel 131MW is removed (Ref. AMM TASK 25-54-12-000-003).

(4) FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)

Make sure that sidewall panel 132JW is removed (Ref. AMM TASK 25-54-12-000-003).

(5) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that an ACCESS PLATFORM 2M (6 FT) is put in position.
(c) Make sure that cargo-compartment light switch 8LU is set to ON.
(d) Make sure that sidewall panel 162CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 30-71-34-860-050-R ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the forward cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 6LU is set to ON.
(3) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that sidewall panel 131MW is removed (Ref. AMM TASK 25-54-12-000-003).
(4) FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that sidewall panel 132KW is removed (Ref. AMM TASK 25-54-12-000-003).
(5) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001) or (Ref. AMM TASK 52-30-00-860-003).
(b) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(c) Make sure that cargo-compartment light switch 8LU is set to ON.
(d) Make sure that sidewall panel 162CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 30-71-34-865-060-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	POT/WASTE WIP-HEATER-LINE	21DW	A03
2000VU	POT/WASTE WIP-HEATER-LINE	1DW	A02
2000VU	POT/WASTE WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-LINE	21DW	A03
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
2000VU	WASTE WIP-HEATER-CTL	9DU	B02
2000VU	WASTE WIP-HEATER-LINE	8DU	B01
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-LINE	1DW	A02
2000VU	POT WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-HEATER-CTL	9DU	B05
2000VU	WASTE WIP-HEATER-LINE	8DU	B04
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-LINE	51DW	D04
2001VU	POT/WASTE WIP-HEATER-LINE	31DW	D03
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03
2001VU	WASTE WIP-DRAINMAST-MID	21DU	E02

4. Procedure
Subtask 30-71-34-420-050-A

A. Installation of a Control Unit
(1) Install the control unit (2) with the brackets (3), the washers (4) and the screws (5) on its support (1).
(2) Tighten the screws (5).
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(4) Connect the electrical connector (6) to the control unit (2).

Subtask 30-71-34-865-063-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B06
** ON A/C NOT FOR ALL
2000VU	POT/WASTE WIP-HEATER-LINE	21DW	A03
2000VU	POT/WASTE WIP-HEATER-LINE	1DW	A02
2000VU	POT/WASTE WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	DRAINMAST-FWD	1DU	B03
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-LINE	21DW	A03
2000VU	WASTE WIP-DRAINMAST-FWD	1DU	B03
2000VU	WASTE WIP-HEATER-CTL	9DU	B02
2000VU	WASTE WIP-HEATER-LINE	8DU	B01
** ON A/C NOT FOR ALL
2000VU	POT WIP-HEATER-LINE	1DW	A02
2000VU	POT WIP-HEATER-CTL	2DW	A01
** ON A/C NOT FOR ALL
2000VU	WASTE WIP-HEATER-CTL	9DU	B05
2000VU	WASTE WIP-HEATER-LINE	8DU	B04
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-CTL	32DW	D02
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP-HEATER-LINE	51DW	D04
2001VU	POT/WASTE WIP-HEATER-LINE	31DW	D03
2001VU	WASTE WIP-HEATER-LINE	31DU	E04
** ON A/C ALL
2001VU	WASTE WIP-DRAINMAST-AFT	11DU	E01
** ON A/C NOT FOR ALL
2001VU	POT/WASTE WIP HEATER CTL	32DW	D02
2001VU	WASTE WIP-HEATER-LINE	22DU	E04
2001VU	WASTE WIP-HEATER-CTL	10DU	E03
2001VU	WASTE WIP-DRAINMAST-MID	21DU	E02

Subtask 30-71-34-710-050-B ** ON A/C NOT FOR ALL

C. Test
(1) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [25DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do the operational test of the drainmast ice-protection (Ref. AMM TASK 30-71-00-710-001).

NOTE: The operational temperature of the drainmast heating circuits:
- The heater comes on at 10 +1 -1 deg. C (50.0 +1.80 -1.80 deg. F)
- The heater comes off at 15 +1 -1 deg. C (59.0 +1.80 -1.80 deg. F)

(2) FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)

Do the operational test of the waste-water ice-protection heater elements (Ref. AMM TASK 30-71-00-710-002).

NOTE: The operational temperature of the heating circuits:
- The heater comes on at 6 +1 -1 deg. C (42.80 +1.80 -1.80 deg. F)
- The heater comes off at 10 +1 -1 deg. C (50.0 +1.80 -1.80 deg. F)

Subtask 30-71-34-710-050-E ** ON A/C NOT FOR ALL

C. Test(s)
(1) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do an operational test of the drainmast ice-protection (Ref. AMM TASK 30-71-00-710-001).

NOTE: The operational temperature of the drainmast heating circuits is:
- The heater comes on at 10 -1 DEG.C or +1 DEG.C (50 -1.8 DEG.F or +1.8 DEG.F)
- The heater goes off at 15 -1 DEG.C or +1 DEG.C (59 -1.8 DEG.F or +1.8 DEG.F).

(2) FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do an operational test of the waste-water ice-protection heater-elements (Ref. AMM TASK 30-71-00-710-002).

NOTE: The operational temperature of the heating circuits is:
- The heater comes on at 6 -1 DEG.C or +1 DEG.C (42.8 -1.8 DEG.F or +1.8 DEG.F)
- The heater goes off at 10 -1 DEG.C or +1 DEG.C (50 -1.8 DEG.F or +1.8 DEG.F).

Subtask 30-71-34-710-050-F ** ON A/C NOT FOR ALL

C. Test
(1) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do the operational test of the drainmast ice-protection (Ref. AMM TASK 30-71-00-710-001).

NOTE: The operational temperature of the drainmast heating circuits:
- The heater comes on at 10 +1 -1 deg. C (50.0 +1.80 -1.80 deg. F)
- The heater goes off at 15 +1 -1 deg. C (59.0 +1.80 -1.80 deg. F)

(2) FOR [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)

Do the operational test of the waste-water ice-protection heater elements (Ref. AMM TASK 30-71-00-710-002).

NOTE: The operational temperature of the heating circuits:
- The heater comes on at 6 +1 -1 deg. C (42.80 +1.80 -1.80 deg. F)
- The heater goes off at 10 +1 -1 deg. C (50.0 +1.80 -1.80 deg. F)

Subtask 30-71-34-710-050-H ** ON A/C NOT FOR ALL

C. Test
(1) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do an operational test of the drainmast ice protection (Ref. AMM TASK 30-71-00-710-001).

NOTE: The operational temperature range of the drainmast heating circuits are as follows:
- The heater starts at 10 +1 deg.C or -1 deg.C (50.00 +1.80 deg.F or -1.80 deg.F)
- The heater stops at 15 +1 deg.C or -1 deg.C (59.00 +1.80 deg.F or -1.80 deg.F).

(2) FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)

Do an operational test of the waste-water ice-protection heater-elements (Ref. AMM TASK 30-71-00-710-002).

NOTE: The operational temperature range of the waste-water ice-protection heating-circuits are as follows:
- The heater starts at 6 +1 deg.C or -1 deg.C (42.80 +1.80 deg.F or -1.80 deg.F)
- The heater stops at 10 +1 deg.C or -1 deg.C (50.00 +1.80 deg.F or -1.80 deg.F).

5. Close-up
Subtask 30-71-34-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 131MW in the forward cargo compartment (Ref. AMM TASK 25-54-12-400-003).
(b) Set the CARGO COMPT light switch 6LU to OFF.
(c) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 162CW in the aft cargo compartment (Ref. AMM TASK 25-55-12-400-003).
(b) Set the CARGO COMPT light switch 8LU to OFF.
(c) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).

Subtask 30-71-34-410-050-C ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 131MW in the FWD cargo compartment.
(b) Set the CARGO COMPT light switch 6LU to OFF.
(c) Close the FWD cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 162CW in the AFT cargo compartment.
(b) Set the CARGO COMPT light switch 8LU to OFF.
(c) Close the AFT cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).

Subtask 30-71-34-410-050-E ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 131MW in the forward cargo compartment.
(b) Set the cargo-compartment light switch 6LU to OFF.
(c) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
(d) Remove the access platform(s).
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install the sidewall panel 162CW in the aft cargo compartment.
(b) Set the cargo-copartment light switch 8LU to OFF.
(c) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
(d) Remove the access platform(s).

Subtask 30-71-34-410-050-N ** ON A/C NOT FOR ALL

A. Close Access (1)
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install sidewall panel 131MW in the forward cargo-compartment (Ref. AMM TASK 25-54-12-400-003).
(b) Set cargo-compartment light switch 6LU to OFF.
(c) Remove the access platform(s).
(d) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) (Ref. AMM TASK 52-30-00-860-004).
(3) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install sidewall panel 162CW in the aft cargo-compartment (Ref. AMM TASK 25-55-12-400-003).
(b) Set cargo-compartment light switch 8LU to OFF.
(c) Remove the access platform(s).
(d) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) (Ref. AMM TASK 52-30-00-860-004).
(4) FOR [3DW] (CONTROL UNIT, POTABLE WATERICE PROTECTION-)
(a) Install sidewall panel 132JW in the forward cargo-compartment (Ref. AMM TASK 25-54-12-400-003).
(b) Set cargo-compartment light switch 6LU to OFF.
(c) Remove the access platform(s).
(d) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) (Ref. AMM TASK 52-30-00-860-004).

Subtask 30-71-34-410-050-R ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install sidewall panel 131MW (Ref. AMM TASK 25-54-12-400-003).
(3) FOR [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install sidewall panel 132KW (Ref. AMM TASK 25-54-12-400-003).
(4) FOR [5DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [140DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Set cargo-compartment light switch 6LU to OFF.
(b) Remove the access platform(s).
(c) Close the forward cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).
(5) FOR [15DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-), [35DU] (CONTROL UNIT, WASTE WATER ICE PROTECTION-)
(a) Install sidewall panel 162CW (Ref. AMM TASK 25-55-12-400-003).
(b) Set cargo-compartment light switch 8LU to OFF.
(c) Remove the access platform(s).
(d) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002) or (Ref. AMM TASK 52-30-00-860-004).

Subtask 30-71-34-862-050-A

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 00:31:58 UTC