737 Flight Crew Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
1.30.22 D6-27370-866-EGP
1 Water Heater Switch
On – activates the water heater.
2 Water Heater Light
Illuminated - heater operating.
3 Temperature Control Switch
4 Water Supply Selector Valve
Each lavatory has a Water Supply Selector Valve. The Water Supply Selector
Valve has four positions, and is located in the cabinet below the sink.
SUPPLY ON – Normal operating position. When the water system is
depressurized, all lavatories except “A” will drain. In this lavatory, the drain valve
must be opened to drain the lavatory
FAUCET ONLY – In this position, water is supplied to the faucet, but not to the
toilet
TOILET ONLY – In this position, water is supplied to the toilet, but not to the
faucet
OFF – No water is supplied to the lavatory.
5 Drain Valve Handle (red)
Located in the forward lavatory only.
September 15, 2016
To Next Page
Loading...
