Installation of the Water Boiler(s)/Heater(s)

TASK 25-35-27-400-001-A
Installation of the Water Boiler(s)/Heater(s)

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 200

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

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.12 and 0.10 m.daN (10.62 and 8.85 lbf.in )
No specific	Torque wrench: range to between 0.20 and 0.16 m.daN (17.70 and 14.16 lbf.in )
No specific	Torque wrench: range to between 0.19 and 0.17 m.daN (16.81 and 15.04 lbf.in )
No specific	Torque wrench: range to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )
No specific	Torque wrench: range to between 0.22 and 0.18 m.daN (19.47 and 15.93 lbf.in )
No specific	Torque wrench: range to between 0.53 and 0.43 m.daN (46.90 and 38.05 lbf.in )
FOR [6475MM] (GALLEY LOC.I)
No specific	Torque wrench: range to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )
FOR [6480MM] (GALLEY LOC.III)
No specific	Torque wrench: range to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )
FOR [6482MM] (GALLEY LOC.IV A/B)
No specific	Torque wrench: range to between 0.17 and 0.14 m.daN (15.04 and 12.39 lbf.in )
No specific	Torque wrench: range to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05BAA1)	Threadlocking Adhesive-- Low strength -
(Material No.05BAE1)	Threadlocking Adhesive-- Medium strength -
(Material No.05PAC1)	Double Sided Adhesive Tape-- Foam Base -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
FOR [6475MM] (GALLEY LOC.I)
(Material No.05BAE1)	Threadlocking Adhesive-- Medium strength -
FOR [6480MM] (GALLEY LOC.III)
(Material No.05BAE1)	Threadlocking Adhesive-- Medium strength -
FOR [6482MM] (GALLEY LOC.IV A/B)
(Material No.05BAE1)	Threadlocking Adhesive-- Medium strength -
(Material No.05PAC1)	Double Sided Adhesive Tape-- Foam Base -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

D. Referenced Information

REFERENCE	DESIGNATION
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
TASK 25-35-00-710-023-A	Operational Test of the Water Boiler/Heater
TASK 38-10-00-614-001-A	Pressurization of the Potable Water System from a Ground Air Supply
TASK 38-10-00-614-002-A	Depressurization of the Potable Water System
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler/Heater ** ON A/C NOT FOR ALL
Water Boiler(s)/Heater(s) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-35-27-860-054-A ** 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) Make sure that the potable water system is depressurized (Ref. AMM TASK 38-10-00-614-002).
(3) On the water service panel, make sure that the WARNING NOTICE(S) is (are) in position to tell persons not to pressurize the potable water system.

Subtask 25-35-27-860-057-A ** ON A/C NOT FOR ALL

B. At the applicable galley, on the galley control panel, make sure that the circuit breaker(s) of the water boiler(s)/heater(s) is (are) open, safetied and tagged.

Subtask 25-35-27-860-057-B ** ON A/C NOT FOR ALL

B. At the applicable galley, on the galley control panel:
(1) Make sure that the circuit breaker(s) of the water boiler/heater is(are) open, safetied and tagged.

Subtask 25-35-27-860-051-C ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that the ice drawer(s) is (are) removed.

Subtask 25-35-27-860-051-F ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Make sure that all applicable doors are open to let you get access to all the parts that you must install/connect.
(2) If necessary, remove the ice drawer(s).

4. Procedure
Subtask 25-35-27-210-051-B ** ON A/C NOT FOR ALL

A. Preparation for Installation
(1) Clean the component interfaces and the adjacent area.
(2) Do a visual inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.

Subtask 25-35-27-420-050-E ** ON A/C NOT FOR ALL

B. Installation of the Water Boiler/Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

(7) Connect the water supply line (2).
(8) Carefully push the water boiler/heater (4) into the galley.
(9) Install the screws (1).
(10) Tighten the screws (1).

Subtask 25-35-27-420-050-L ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

B. Installation of the Water Boiler/Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Prevent damage to the component interfaces and the adjacent area.
(5) Put the water boiler/heater (4) in position.
(6) Connect the electrical connector (3).
(7) Connect the water supply line:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: DO NOT DO WORK ON THE WASTE WATER SYSTEM AND THE POTABLE WATER SYSTEM AT THE SAME TIME. THIS WILL PREVENT CONTAMINATION OF THE POTABLE WATER SYSTEM. SUCH CONTAMINATION CAN BE DANGEROUS TO HEALTH.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

(a) Remove the PLUG-BLANKING from each disconnected line end.
(b) Connect the water supply line (1).
(8) Carefully push the water boiler/heater (4) into the galley.
(9) Install and tighten the screws (2).

Subtask 25-35-27-420-050-AA ** ON A/C NOT FOR ALL

B. Installation of the Water Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Remove the PLUG-BLANKING from each disconnected line end.
(4) Install the water heater in the galley:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

(a) Make sure that the lever (2) is in the unlocked position.
(b) Carefully put the water heater (3) on the rails (4).
(c) Push the water heater (3) and connect the electrical connector, the potable water supply line and the drain line.
(d) Set the lever (2) to the locked position.
(e) Install the screw (1).
(f) Tighten the screw (1).
(g) Make sure that the water heater (3) is correctly locked on the rails (4).

Subtask 25-35-27-420-050-AB ** ON A/C NOT FOR ALL

B. Installation of the Water Boiler/Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

(1) Prevent damage to the component interfaces and the adjacent area.
(2) Remove the PLUG-BLANKING from each disconnected line end.
(3) Remove the CAP-BLANKING from each electrical connector and receptacle.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Put the water boiler/heater (5) in position on the galley.
(6) Connect the electrical connector (4) and the water supply line (1) as follows:
(a) Connect the electrical connector (4).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

(b) Connect the water supply line (1).
(7) Carefully push the water boiler/heater (5) into the galley.
(8) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the threads of the screws (3).
(9) Install the washers (2) and the screws (3).
(10) TORQUE the screws (3) to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )

Subtask 25-35-27-420-050-AO ** ON A/C NOT FOR ALL

B. Installation of the Water Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Remove the PLUG-BLANKING from each disconnected line end.
(3) Make sure that all the electrical connections are clean and in the correct condition.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Install the water heater in the forward galley:
(a) Make sure that the lever (2) is in the unlocked position.
(b) Put the water heater (4) on the mounting rails (1).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

(c) Carefully push the water heater (4) to connect the electrical connector, the water supply line and the drain line.
(d) Set the lever (2) to the locked position.
(e) Install the screw (3).
(f) Tighten the screw (3).
(6) Install the water heater in the aft galley:
(a) When you connect/install the components, refer to the match marks made during the removal procedure.
(b) Put the water heater (9) in position.
(c) Connect the electrical connector (8).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

(d) Connect the water supply line (5).
(e) Carefully push the water heater (9) into the galley.
(f) Put the washers (6) in position and install the screws (7).
(g) TORQUE the screws (7) to between 0.20 and 0.16 m.daN (17.70 and 14.16 lbf.in )

Subtask 25-35-27-420-050-AV ** ON A/C NOT FOR ALL

B. Installation of the Water Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

(1) Install the water heater (5) in the forward galley and aft galley G3B as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Hold the water heater (5) in position.
(e) Connect the water supply line (1) as follows:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

1 Remove the PLUG-BLANKING from each disconnected line end.
2 Connect the water supply line (1).
(f) Connect the electrical connector (4).
(g) Carefully push the water heater (5) into the galley.
(h) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the heads of the screws (3).
(i) Install the washers (2) and the screws (3).
(j) TORQUE the screws (3) to between 0.20 and 0.16 m.daN (17.70 and 14.16 lbf.in )

.
(k) Clean the heads of the screws (3) and/or the adjacent area.
(l) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the heads of the screws (3).
(2) Install the water heater (6) in aft galley G4B as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the heads of the screws (7) and (8).
(e) Put the bracket (11) in position and install the screws (8) and (7).
(f) TORQUE the screws (8) to between 0.22 and 0.18 m.daN (19.47 and 15.93 lbf.in )

.
(g) TORQUE the screws (7) to between 0.53 and 0.43 m.daN (46.90 and 38.05 lbf.in )

.
(h) Clean the bracket (11), heads of the screws (7) and (8) and/or adjacent area.
(i) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the heads of the screws (7) and (8) and the bracket (11).
(j) Hold the water heater (6) in position.
(k) Connect the water supply line (1) as follows:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

1 Remove the PLUG-BLANKING from each disconnected line end.
2 Connect the water supply line (1).
(l) Connect the electrical connector (4).
(m) Carefully push the water heater (6) into the galley.
(n) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the heads of the screws (9).
(o) Install the screws (9).
(p) TORQUE the screws (9) to between 0.19 and 0.17 m.daN (16.81 and 15.04 lbf.in )

.
(q) Clean the bracket (11), heads of the screws (9) and/or adjacent area.
(r) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the heads of the screws (9), bracket (11) and adjacent area.
(s) Apply Double Sided Adhesive Tape-- Foam Base - (Material No.05PAC1) to the decorative strip (10) and install it.

Subtask 25-35-27-420-050-AY ** ON A/C NOT FOR ALL

B. Installation of the Water Heater

Water Boiler/Heater ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

(1) Install the water heater in the forward galley:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.
(b) Make sure that all the electrical connections are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Put the water heater (5) in position.
(e) Connect the water supply line:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

1 Remove the PLUG-BLANKING from each disconnected line end.
2 Connect the water supply line (1).
(f) Apply Threadlocking Adhesive-- Low strength - (Material No.05BAA1) on the electrical connector (4).
(g) Connect the electrical connector (4).
(h) Carefully push the water heater (5) into the galley.
(i) Put the washers (2) in position and install the screws (3).
(j) TORQUE the screws (3) to between 0.20 and 0.16 m.daN (17.70 and 14.16 lbf.in )

.
(k) Clean the heads of the screws (3) and/or the adjacent area.
(l) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) on the heads of the screws (3).
(2) Install the water heater in the aft galely:
(a) When you connect/install the components, refer to the match marks made during the removal procedure.
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Do an inspection of the component interfaces and the adjacent area.
(e) Put the water heater (5) in position.
(f) Connect the water supply line:

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

WARNING: ALWAYS USE RUBBER GLOVES WHEN YOU DO WORK:

ON THE WASTE WATER SYSTEM, OR
ON PARTS THAT HAVE CONTAMINATION FROM THE WASTE WATER SYSTEM.

WHEN YOU COMPLETE THE WORK PROCEDURE, CLEAN YOUR HANDS WITH SOAP AND WATER. THIS WILL PREVENT INFECTION (WASTE WATER IS DANGEROUS FOR HEALTH).

1 Remove the PLUG-BLANKING from each disconnected line end.
2 Connect the water supply line (1).
(g) Apply Threadlocking Adhesive-- Low strength - (Material No.05BAA1) on the electrical connector (4).
(h) Connect the electrical connector (4).
(i) Carefully push the water heater (5) into the galley.
(j) Put the washers (2) in position and install the screws (3).
(k) TORQUE the screws (3) to between 0.20 and 0.16 m.daN (17.70 and 14.16 lbf.in )

.
(l) Put the metal plates (7) and (8) and the cover (9) in position and install the screws (6) and (10).
(m) TORQUE the screws (6) and (10) to between 0.12 and 0.10 m.daN (10.62 and 8.85 lbf.in )

Subtask 25-35-27-420-050-KL ** ON A/C NOT FOR ALL

B. Installation of the Water Boiler(s)/Heater(s)

Water Boiler(s)/Heater(s) ** ON A/C NOT FOR ALL

WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

WARNING: SUPPORT THE UNIT/ASSEMBLY. THE UNIT/ASSEMBLY IS HEAVY. IF YOU DO NOT SUPPORT IT, IT WILL FALL. THIS CAN CAUSE INJURY TO PERSONS, AND/OR DAMAGE TO EQUIPMENT.

(1) Prevent damage to the component interfaces and the adjacent area.
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Make sure that all the electrical connections are clean and in the correct condition.
(4) Remove the PLUG-BLANKING from each disconnected line end.
(5) FOR [6475MM] (GALLEY LOC.I)
Install the water boiler/heater (5) in the galley as follows:
(a) Put the water boiler/heater (5) in position on the galley.
(b) Connect the electrical connector (4) and the water supply line (1) as follows:
1 Connect the electrical connector (4).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

2 Connect the water supply line (1).
(c) Carefully push the water boiler/heater (5) into the galley.
(d) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the threads of the screws (3).
(e) Install the washers (2) and the screws (3).
(f) TORQUE the screws (3) to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )

.
(6) FOR [6480MM] (GALLEY LOC.III)
Install the water boilers/heaters (5) and (6) in the galley as follows:
(a) Put the water boilers/heaters (5) and (6) in position on the galley.
(b) Connect the electrical connectors (4) and the water supply lines (1) as follows:
1 Connect the electrical connectors (4).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

2 Connect the water supply lines (1).
(c) Carefully push the water boilers/heaters (5) and (6) into the galley.
(d) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the threads of the screws (3).
(e) Install the washers (2) and the screws (3).
(f) TORQUE the screws (3) to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )

.
(7) FOR [6482MM] (GALLEY LOC.IV A/B)
Install the water boiler/heater (5) in the galley as follows:
(a) Put the water boiler/heater (5) in position on the galley.
(b) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the threads of the screws (7).
(c) Put the bracket (10) in position and install the screws (7).
(d) TORQUE the screws (7) to between 0.20 and 0.18 m.daN (17.70 and 15.93 lbf.in )

.
(e) Connect the electrical connector (4) and the water supply line (1) as follows:
1 Connect the electrical connector (4).

WARNING: MAKE SURE THAT THE POTABLE WATER SYSTEM IS DEPRESSURIZED. A PRESSURIZED SYSTEM CAN CAUSE INJURY TO PERSONS WHEN THEY DO WORK ON IT.

2 Connect the water supply line (1).
(f) Carefully push the water boiler/heater (5) into the galley.
(g) Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) to the threads of the screws (8).
(h) Install the screws (8).
(i) TORQUE the screws (8) to between 0.17 and 0.14 m.daN (15.04 and 12.39 lbf.in )

.
(j) Apply Double Sided Adhesive Tape-- Foam Base - (Material No.05PAC1) to the screen (9) and install it.
(k) Clean the screen (9) and the adjacent area.
(l) Apply Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the screen (9).

Subtask 25-35-27-860-058-A ** ON A/C NOT FOR ALL

C. At the applicable galley, on the galley control panel, remove the safety clip(s) and the tag(s), then close the circuit breaker(s) of the water boiler(s)/heater(s).

Subtask 25-35-27-860-058-B ** ON A/C NOT FOR ALL

C. At the applicable galley, on the galley control panel:
(1) Remove the safety clip(s) and the tag(s) and close the circuit breaker(s) of the water boiler/heater.

Subtask 25-35-27-710-050-A ** ON A/C NOT FOR ALL

D. Do the operational test of the water boiler(s)/heater(s) (Ref. AMM TASK 25-35-00-710-023).

Subtask 25-35-27-710-050-B ** ON A/C NOT FOR ALL

D. Do the operational test of the water boiler/heater (Ref. AMM TASK 25-35-00-710-023).

Subtask 25-35-27-860-055-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Remove the WARNING NOTICE(S).
(2) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).

5. Close-up
Subtask 25-35-27-410-050-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.

Subtask 25-35-27-410-050-D ** ON A/C NOT FOR ALL

A. Close Access
(1) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).
(2) Remove the warning notice.
(3) Install the ice drawer(s).
(4) Make sure that the work area is clean and clear of tools and other items.

Subtask 25-35-27-410-050-F ** ON A/C NOT FOR ALL

A. Close Access
(1) If the ice drawer(s) is (are) removed, install it (them).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close all doors.

Subtask 25-35-27-862-050-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.03.31 23:34:37 UTC