caution - Thor Motor Coach

Water Systems
84
MONITOR PANEL
Tank Capacities
Inaccurate Holding
Tank Level
Readings
Oversensitive
Readings
Undersensitive
Readings
WASTE WATER
SYSTEM
7. Drain the entire system.
8. Flush the complete system with fresh water until chlorine odor disappears.
9. Finally, close all drains and fill the fresh water tank as you normally would. Make
sure the water heater has water in it prior to igniting.
Chlorine is poisonous. Recap bottle and clean any
appliances used with soap and water.
The monitor panel allows you to quickly check the levels in the fresh water and waste
water tanks. Electrical sensors at various points on the tanks send signals to the
monitor panel. To check fluid levels, press and hold the test switch designated for the
tanks, and read the level indicators on the panel. The indicator is proportioned in thirds
with each light being lit up to the level that the tank contains.
Sometimes, residue on the sides of a tank, or water with a low mineral content will give
a false reading. Check the levels occasionally when you are sure of a tank’s contents
to double check the accuracy of the monitor panel.
The monitor panel allows you to quickly check the levels in the fresh water and waste
water tanks. Electrical sensors at various points on the tanks send signals to the
monitor panel. To check fluid levels, press and hold the test switch designated for
the tanks, and read the level indicators on the panel. The indicator is proportioned in
thirds with each indicator light illuminating to the level that the tank contains. Indicator
lights and their meanings:
The accuracy of two wire holding tank monitoring systems can be adversely affected
by dirty tanks or unusual mineral content in the water. These conditions can cause
the monitoring system to have oversensitive (reads higher than actual level) or under
sensitive (reads lower than actual level) readings.
Oversensitive readings can occur as a result of scum build up on the tank walls, or
abnormally high mineral content in the water. In these situations, the monitoring
system indicates higher levels than are actually present in the holding tank. Certain
cleaning products and food by-products can build up on the inside walls of the holding
tanks, producing a layer of scum that can cause the monitoring system to read higher
than the actual level. To correct this problem, the holding tanks should be cleaned
periodically (consult dealer for cleaning instructions).
Under sensitive readings can occur if the mineral content of the water is abnormally
low. In this case, the monitoring system indicates lower levels than are actually
present in the holding tank. This problem can be corrected by moving the ground
probe closer to the other probes.
The waste water system is comprised of dual holding tanks with individual termination
valves. The holding (solid waste) tank as indicated on your monitor panel, collects all
the waste material from the toilet. The gray water tank collects all of the liquid waste
material from the sinks, drains, and showers. Both tanks are joined together after the
termination valve to provide a single termination outlet for convenient dumping of
waste materials. A flexible sewer hose (which is not provided) is required to make the
connection between your unit’s termination valve and the approved dump station inlet.
The drainage system is very similar to that of your home. The system is trapped and
vented to prevent waste gases from entering your motorhome. The drain piping is
made of ABS material and is resistant to most chemicals. The “P” traps at the sinks,
showers and tubs are available for use as clean-outs if necessary.