Waste Drain Hose; Tank Flush - Monaco 2009 Knight Owner's Manual

Ensure that there is enough liquid in the
holding tanks prior to dumping to provide a
smooth flow through the valve, termination
drain and sewer hose. Empty the waste holding
tanks weekly to prevent stagnation and
overfilling.
Black Water Tank:
Before initially operating the toilet, treat
the sewage holding tank with a pre-charge
of water and an odor-control chemical
(available at most RV supply stores). First,
add approximately three gallons of water to
the holding tank. Next, mix the chemicals, in
accordance with the manufacturer instructions,
with approximately one gallon of water. Pour
mixture through toilet to the holding tank.
Be careful not to spill the chemical on hands,
clothing, toilet bowl or carpet. Hot weather
conditions may require adjusting the amount
of chemical used to control odor. Repeat the
chemical pre-charge to the holding tank each
time the tank is cycled.
WARNING
Most chemical mixtures for holding
tank odor control are poisonous.
Follow the product manufacturer's
directions and warnings when using
holding tank additive. DO NOT use
any products that contain petroleum
distillate or ammonia in place of RV
odor controlling chemical. Petroleum
distillate or ammonia will damage the
ABS plastic holding tanks and seals.
132

Waste Drain Hose

A flexible three-inch
sewer hose attaches
between the common
termination drain and
the sewer shore facility.
Sewer hoses usually
come in 10 or 20 foot
lengths.
The shore fitting for the sewer hose may be a
three or four-inch, male or female thread pipe;
or a four-inch pipe with no threads covered
by a metal plate. Different style of adapters
are available to fit most configurations. Hose
ladders may also be purchased to support the
hose.
It is important that the sewer hose remains
secure. Always tighten clamps and restraining
devices before use. Lay the sewer hose inline
between the termination drain and the shore
fitting. Restrain the hose to prevent movement
during use. Wear protective and/or disposable
gloves when handling the sewer hose.
To Attach the Hose:
Remove termination cap. Align coupler

tangs with termination tabs. Twist
coupler clockwise 90º locking coupler
to termination drain.
Attach other end of hose to shore

sewer facility. Restrain hose to prevent
movement during
use.
Open the liquid

waste drain (grey
water) valve.
The solid waste drain (black water) valve
remains closed until the tank is full or until
time of departure to help prevent clogging.
Use the outside faucet or shower attachment
for washing or rinsing the sewer hose after
dumping the black tank.
NOTE
Use care when connecting the sewer
030834d
hose adapter to the termination drain
in cold weather.
NOTE
Close the grey water valve 24 hours
prior to departing to allow the tank to
fill with liquid to help in the dumping
process.
LUBE
Periodically lubricate the O-ring on
the sewer hose adapter with silicone
spray.

Tank Flush

The motorhome comes equipped with a
power flush nozzle located in the black tank
to help reduce solids build-up. Flush the black
tank each drain cycle. Failure to thoroughly
rinse the black tank may result in accumulated
solids and a clogged spray nozzle.
Gravity Drain Hose Dumping:
Attach sewer hose to terminal drain

and shore facility.
Prepare to dump the solid waste (black)

tank first. Close the liquid waste drain
(grey) valve.
Fill the grey tank to at least 50% by

running water in the shower or sinks.
130013