HOWTO: Waste Water Dumping
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© 2016 by Erwin Hymer Group North America, Inc.
Open the black valve
Open the gray valve
Always dump the black tank first and the gray tank second. The graywater will help flush any remaining solids from
the dump hose. If you wish to rinse the system, pour water down the toilet and sink, and dump again.
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• Close the discharge valve on the end of the waste water hose.
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• Rinse off the dump area and the dump hose.
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• Return the waste water hose to its storage compartment by pushing the green hose back onto the reel.
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• Add about ½ gallon of fresh water to the black tank. While you`re doing this, add a packet of black holding tank chemicals
to the tank.
Do not toss the packet into the toilet, even if it claims to be `dissolvable`. It may not be dissolvable enough for the
macerator. Tear open the packet and pour the contents into the black tank, and dispose of the packet in the trash. The
contents of the powder packets can be irritating to your eyes and nose, so hold the packet low to the bowl and try to
pour directly into the tank.
The waste water discharge pump will be damaged if allowed to operate dry for any length of time. Turn off the pump
as soon as the solid stream of liquid begins to sputter, and the pump's sound changes.
