MCi Crusader II 1989 Maintenance Manual page 520

Date
1-1-89
Page ___
17_-8 _ _
Mc·~sMAINTENANCE MAI\IUAL
CHEMICAL TANK
DRAINING CHEMICAL TANK:
. 1. Place coach over floor flush hopper.
2. Pull handle of slide dump valve. This completely exposes
the dump tube opening and drains the contents of the tank.
NOTE: The valve should _be left open until
the flushing operation is performed; the
chemical tank incorporates a large clean-
out hole in one end for removal of wastes.
FLUSHING CHEMICAL TANK Connect water service hose to
Hansen connector to introduce continuous flushing action
through chemical tank. Flush chemical tank until clean.
FILLING AND TREATING CHEMICAL TANK - Before filling
chemical tank make certain that dump valve is closed.
The water supply hose is left connected to inlet until the
water level can be seen in the sight gauge on the side of the
chemical tank.
Pour 1/3 pint(.15 liters) of Kilgerm or equivalent disinfectant
into chemical tank. This chemical mixed with water will prop-
erly treat the chemical tank. It can be obtained from:
Government Chemical Products Corporation
5511 Bellford Avenue
Cleveland. Ohio
WINTERIZING - The most economical way to protect the
chemical tank. should it be exposed to extreme cold tempera-
tures, is to use an antifreeze solution such as ethylene glycol
(unless the tank is equipped with an immersion heater).
AIR OPERATED FLUSH SYSTEM
The air-operated pump is a self-contained flushing unit
having one movable part, an air-operated diaphragm which is
within the unil The pump unit is mounted to the bottom of the
chemical tank. .
The system operates from the main air supply and pressure
is reduced to 11 psi (76 kPa) by a regulator. A push button
control valve is installed and when pressed will permit the
regulated air pressure to operate the pump diaphragm. The
diaphragm will expel sufficient water to flush the toilet bowl. The
flushing cycle takes approximately 14 seconds and the recov-
ery time approximately 10 seconds.
Flushing is accomplished by delivering water into the toilet
bowl ir. a vigorous swirling action.
When the push button is released the quick release valve will
release air from the diaphragm pump.
CHARGING SYSTEM {WARM OR COLD WEATHER)
To charge the system fill the tank with 5 gallons (19 liters) of
.water through the chemical tank rinse and fill fitting located
above the inside right side engine compartment door. Press the
control button in lavatory to flush and add the recommended 6
oz. (177 ml) of DG-19 chemical or the alternate and quantities as
shown later. Flush again and the system is ready for use.