Chevrolet ranger rt Owner's Manual page 42

Utilities
Black Tank
The black water tanks contains toilet waste. Please refer to the
HOWTO: Waste Water Dumping section for an explanation of
which materials you can and can't flush down the toilet.
Indicators
The gray and black water tank level indicators on the control
panel will give you an approximate indicator of your tank levels.
When the gray water tanks is full to capacity, water will no
longer drain down the shower and sink drains, and you need to
dump the tanks before running any more water. If you see fluid
below the toilet valve in the bowl of the toilet, your black water
tank is full and also needs to be emptied before further use.
See Monitor Panel for more information.
Ensure that both the black and grey water gate valves are closed before using the waste water system. It is possible
for the valves to open slightly especially after extensive driving. Black and grey water dump valves are accessed through
the driver side storage door.
Tank level and battery charge indicators on monitor
panel
39
© 2014 by Roadtrek, Inc.