Waste Water Disposal - NewMar ventana 2017 Owner's Manual

Be careful not to spill the chemical on your hands, clothing, or the carpet as it may cause a permanent stain.
Use only approved RV odor-controlling chemicals in the holding tanks. Products containing ammonia and
petroleum will damage the ABS plastic holding tanks and seals.

Waste Water Disposal

Holding tanks are an enclosed sewer system and must be drained into an approved dump station. Both black
and gray water holding tanks must be drained and rinsed thoroughly on a regular basis in order to prevent the
accumulation of harmful or toxic materials.
How to Drain the Black Holding Tank
The holding tanks should only be drained when they are at least three-fourths full, to provide sufficient water to allow the
complete flushing of waste materials in the drain lines and hose. If the tanks are not three-fourths full, add enough water
to allow for sufficient flushing. Whenever possible, drain the holding tanks prior to traveling. The carrying capacity of your
unit will be reduced if water is left in the black or gray tanks.
To empty the waste water tanks, follow the procedure below, depending on the type of waste system your coach uses. It
is recommended to drain the black water tank before the gray water tank.
Draining the Black Water Tank on a Coach with a Standard Gravity Drain and Dump System
1. Connect the adapter to the drain hose.
2. Unscrew the drain cap, and connect the hose with the adapter to the drain fitting.
3. Open the gate valve all the way by pulling on the T-handle. The tank will start to drain as soon as the T-handle
is pulled.
4. After you have drained the black water tank, immediately drain the gray water tank, allowing the water from the
gray tank to wash the black water residue from the drain lines and hose.
5. Add a holding tank deodorant to help control the odor and break down the solid waste.
6. When both of the tanks are empty, flush them with fresh water before you close the valves. Flush the he gray
tanks by pouring a couple of gallons of water into a sink drain. The drain outlet is engineered for quick release of
the drain hose adapter.
7. Always close the gate valves and secure the end cap to prevent leakage while in transit.
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Both of the holding tanks terminate in a valve arrangement
that permits draining each tank separately or together. The
valves that open to release the water are called gate valves.
The blade that closed the opening in the sewer drain pipes is
connected to the T-handle to release the contents of the
tank(s) when pulled. The sewer line must be securely
capped during self-containment use to prevent leakage of
waste material onto the ground or pavement.
Do not pull the holding tank gate valve open, or operate the
electric dump valve switch (if equipped) when the protective
cap is installed on the pipe. Always drain the tank into an
acceptable sewer inlet or dump station.