25
Emptying Tanks
Almost all campgrounds will have dumping facilities. Park directories such as Woodalls and Rand
McNally also list dumping stations.
When Parked and Connected to Sewer Outlet
When you are in a campground and connected to a sewer outlet, keep the black water holding
tank dump valve closed, and empty the tank every few days or whenever it becomes almost full.
Only by sending a large volume of liquid through the black water holding tank at a time will
toilet paper and other solids completely wash away.
This practice will avoid the accumulation of solids in the black water holding tank, which could
lead to an unpleasant cleaning job. Should solids accumulate, close the dump valve; fill the tank
about half full with water, and then tow the trailer for a few miles. The turbulence and surging of
the water will usually dissolve the solids under suspension so the tank can be drained.
When connected to a sewer outlet, keep the grey water tank valve open.
Draining the tanks as described will protect them from freezing during storage or when travelling
in winter conditions. When travelling in sub-freezing temperatures and using the drain system,
use a winterizing solution designed for trailer use. Follow the directions on the container.
All products should be marked approved for ABS drainage systems.
Cleaning Drain System
The only cleaning agents that can be used without causing harm to the system are household
ammonia and trisodium phosphate in small quantities. Do not use any product that contains any
portion of petroleum distillates. This attacks the rubber seats of your toilet and dump valve. Also,
do not use any dish detergent or abrasive cleaners.
There are many deodorizers on the market in tablet, liquid and powder form. These not only
combat odour, but also stimulate the bacteria that works to dissolve the solids in your tank.
Dumping Waste Waters
When camping on sites without sewage hook up, waste water accumulates in the tanks. These
tanks will then have to be emptied at designated dump stations.
1. Bring the wheel (left side) of the ALTO close to the dump station sewage hook up.
2. Take the flexible hose located in the storage tube under the chassis close to the dump
valves.
3. Attach hose to sewage connector, located in front of the wheel (left side). Lock hose tightly
by twisting 1/8 of a turn clockwise. Make sure it is locked! (photo C-4.1)
4. Pivot sewage connector outlet downward.
5. Insert the other end of the hose in the dump station sewage hook up.
6. Open black water valve. (photo C-4.3.)
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