Operational Test of the Coffee Maker

TASK 25-35-00-710-013-A
Operational Test of the Coffee Maker

ZONE: 200

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

B. 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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
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

3. Job Set-up
Subtask 25-35-00-861-062-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 25-35-00-865-085-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ELEC/GALLEY/CNTOR	7MC	S28
122VU	ELEC/GALY & CAB/CTL	1XA	S26
123VU	FWD GALLEY/FEEDER F	16MC	AC10
123VU	AFT GALLEY/FEEDER E	14MC	AF09
123VU	AFT GALLEY/FEEDER A	3MC	AF04
** ON A/C NOT FOR ALL
123VU	AFT GALLEY/FEEDER B	12MC	AD09
123VU	FWD GALLEY/FEEDER D	2MC	AD04
123VU	FWD GALLEY/FEEDER C	1MC	AE10

Subtask 25-35-00-860-051-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) In the cockpit, on the overhead panel, on the ELEC section of panel 35VU, make sure that the GALLEY or GALY & CAB pushbutton switch (2XA) is pushed (the OFF legend is off).
(2) On the galley control panel, make sure that the related circuit breaker(s) of the coffee maker is (are) closed.
(3) Pressurize the potable water system (Ref. AMM TASK 38-10-00-614-001).

4. Procedure
Subtask 25-35-00-710-064-A ** 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: OPEN THE WATER FAUCET OR THE WATER DRAIN CAREFULLY AND SLOWLY. THE TANK IS PRESSURIZED AND STEAM OR VERY HOT WATER CAN COME OUT OF THE NOZZLE. HOT WATER OR STEAM IS DANGEROUS (IT CAN BURN YOU).

A. Operational Test of the Coffee Maker

NOTE: The NO WATER or LOW WATER indicator could be installed in the COLD WATER pushbutton.

NOTE: If there is no HOT PLATE pushbutton installed, the hot plate is energized whenever the ON/OFF pushbutton is in the ON position.

ACTION	RESULT
1.In the galley:	In the galley at the coffee maker:
Close the galley potable-water shutoff-valve.
2.At the coffee maker:
Open the coffee maker hot water-faucet.	Water flows from the coffee maker hot water-faucet.
Hold the coffee maker hot water-faucet in the open position.	After a short time, the water flow from the coffee maker hot water-faucet stops.
Close the coffee maker hot water-faucet.
Push the ON/OFF pushbutton.	The indicator in the ON/OFF pushbutton and in the NO WATER or LOW WATER indicator comes on.
3.In the galley: Open the galley potable-water shutoff-valve.
4.At the coffee maker:	At the coffee maker:
Open and hold the coffee maker hot water-faucet in the open position.
Close the coffee maker hot water-faucet when the water starts to flow.	After a short time, the light in the NO WATER or LOW WATER indicator goes off.
Put the coffee-server in position and lock the brew handle in the down position.
Push the BREW and the HOT PLATE ON pushbutton.	The indicators in the BREW and HOT PLATE ON pushbuttons comes on. If the water has the set temperature, the hot water flows through the brew-cup into the coffee-server.
Release the brew handle to the up position.	The indicator in the BREW pushbutton goes off and the hot water flow through the brew-cup stops.
Open the coffee maker hot water-faucet.	Hot water flows from the coffee maker hot water-faucet.
Close the coffee maker hot water-faucet.	The hotwater flow stops.
If installed, open the coffee maker cold water-faucet.	If installed, cold water flows from the coffee maker cold water-faucet.
If installed, close the coffee maker cold water-faucet.	If installed, the cold water flow stops.
Lock the brew handle in the down position and push the BREW pushbutton switch.	The indicator in the BREW pushbutton comes on.
	After a short time, the hot water flows through the brew-cup into the coffee-server. After approx. 3 minutes the water has the set level in the coffee-server and operates the level sensor. The water flow stops and the indicator in the BREW pushbutton goes off.
Remove the coffee-server and discard the contents. Put the coffee-server in position under the coffee maker hot water-faucet.
Open and hold the coffee maker hot water-faucet in the open position.	Hot water flows from the coffee maker hot water-faucet.
Close the coffee maker hot water-faucet.	The hotwater flow from the coffee-maker hot water-faucet stops.
Push the ON/OFF pushbutton.	The indicator in the ON/OFF pushbutton and in the HOT PLATE ON pushbutton goes off.

Subtask 25-35-00-860-076-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Put the related circuit breaker(s) and switch(es) back to their initial configuration.
(2) If necessary, depressurize the potable water system (Ref. AMM TASK 38-10-00-614-002).
(3) Make sure that the coffee maker is in its initial configuration.
(4) Make sure that the work area is clean and clear of tools and other items.

5. Close-up
Subtask 25-35-00-862-062-A ** ON A/C NOT FOR ALL

A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 06:15:48 UTC