A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 25-35-00-865-077
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ELEC/GALLEY/CNTOR 7MC S28
R **ON A/C 001-049, 051-060, 101-102, 201-201,
122VU ELEC/GALLEY/CTL 1XA S26
R **ON A/C 061-099, 103-149, 151-199, 202-299,
122VU ELEC/GALY & CAB/CTL 1XA S26
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299,
R RR 123VU FWD GALLEY/FEEDER F 123VU AFT GALLEY/FEEDER E 16MC 14MC AC10 AF09
Subtask 25-35-00-860-061
C. Aircraft Maintenance Configuration
(1) Make sure that the pushbutton GALLEY 2XA on the overhead panel 35VU is in the on position (the white OFF indicator does not come on).
(2) Make sure that the related C/B of the water-heater on the galley control panel is closed.
(3) Pressurize the potable water system (Ref. TASK 38-10-00-614-001).
4. Procedure
_________
R **ON A/C 001-049, 101-105,
Subtask 25-35-00-710-074-A
A. Do the Operational Test of the Water-Heater R
R (1) Use a CONTAINER 5 L(1 1/2 USGAL) to collect the water from the water R faucet during the test.
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the water-heater: On the water-heater:
-Push and hold the LAMP TEST - All indicators come on.
pushbutton to the on position.
-Release the LAMP TEST - All indicators go off.
pushbutton.
2. At the galley:
-Close the potable water shut
off valve.
3. On the water-heater:
-Open the hot water faucet until
waterflow stops.
-Close the hot water faucet.
4. On the water-heater: On the water-heater:
-Push the ON/OFF pushbutton to - The ON indicator comes on. the on position. - The LOW WATER indicator comes on.
5. At the galley:
-Open the potable water shut off
valve.
6. On the water-heater: On the water-heater:
-Open the hot water faucet to - The unit fills with water. bleed air from the tank until - The LOW WATER indicator goes off water comes from the hot water until the tank is full. faucet. - The CYCLE indicator comes on.
-Close the hot water faucet.
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
- Let the unit operate for approx. 5 min. - The CYCLE indicator goes off.
- Open the hot water faucet to empty the water-heater tank. - The CYCLE indicator comes on.
- Close the hot water faucet. - The unit fills with water. - After a short time, the CYCLE indicator goes off.
- Push the ON/OFF pushbutton to the off position. - All indicators go off.
R **ON A/C 051-099,
R Subtask 25-35-00-710-074-C
R A. Do the Operational Test of the Water-Heater
R (1) Use a CONTAINER 5 L(1 1/2 USGAL) to collect the water from the water R faucet during this test. R
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. At the galley:
R - Close the potable water shut
R off valve.
R 2. On the water-heater:
R - Open the hot water faucet until
R waterflow stops.
R - Close the hot water faucet.
R 3. On the water-heater:
R - Switch the ON/OFF switch to the
R on position.
R 4. At the galley:
R - Open the potable water shut off
R valve.
On the water-heater:
-The NO WATER indicator comes on.
EFF : 001-049, 051-099, 101-105, 25-35-00Page 530 May 01/05
CES
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
R 5. On the water-heater:
R - Open the hot water faucet to
R bleed air from the tank until
R water comes from the faucet.
R - Close the hot water faucet.
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