MD-11 Flight Crew Operations Manual
k
Water and Waste -
Controls and Displays
Wat.30.2
1. POTABLE WATER Quantity Indicator
Indicates how much water in the potable water tank. 100% is full.
2. PRESSURE Switch (2) - amber
Used by maintenance to depressurize the systems. LOW illuminates amber
when pressure in system tanks is low. OFF illuminates amber when
respective system is depressurized. This switch can be used to depressurize
and isolate an individual system.
3. LINE DRAIN Switch - amber
Used by maintenance to open valve and drain respective system lines. FWD
water drains into tanks. AFT water drains overboard. Respective OPEN light
illuminates amber when drain valve is open.
4. SYS 1/2 Status Lights - green and amber
ADD WATER illuminates amber when the water supply is below the selected
quantity.
VALVES OPEN illuminates amber when the fill/drain and overflow/vent
valves are open.
VALVES CLOSED illuminates green when the fill/drain and overflow/vent
valves are closed.
AT LEVEL SELECTED illuminates green when the tank is filled to the
selected level.
5. HEATERS 1/2 Light - green
Illuminates green during test when heater is operating properly.
6. TEST Switch and HEAT ON Light
TEST - Verifies status of heater circuits.
OFF - Turns heaters off.
HEAT - Turns heaters on.
HEAT ON light illuminates amber when the heaters are on and the water
temperature falls below 50 degrees F.
7. QTY SELECT Switch
Selects quantity to which the tanks are to be filled. DRAIN position allows
tank draining.
8. FILL/DRAIN Cap and Fitting
Tanks are filled and drained through this fitting. Protecting the fitting is a
lever lock cap.
October 02, 2006
To Next Page