737 MAX Flight Crew Operations Manual
Airplane General, Emergency
Equipment, Doors, Windows -
Controls and Indicators
MN-FLT-OH-201
1.30.19
5
Tank Drain Valve Handle
Open - drains water from tank.
Closed - normal position.
6
Access Panel
Cannot be closed unless the Fill and Overflow Valve and Tank Drain Valve
Handles are in the closed position.
Lavatory Controls
1
Water Heater Switch
On – activates the water heater.
2
Water Heater Light
Illuminated - heater operating.
3
Temperature Control Switch
SELECTOR VALVE
FAU
CET
ON
LY
O
F
TOILET ONLY
SU
PP
LY
O
N
CLOSED
OPEN
DO NOT OPEN DURING FLIGHT
DRAIN VALVE OPERATION
PLACARD
4
5
LAVATORY SINK CABINET
1
2
3
March 1, 2021