Water Pumping System; Heat Transfer System - Prochem BLAZER PLUS Operating Instructions Manual

WATER PUMPING SYSTEM

See Figures 1 and 2.
Cold water enters the console through the water
inlet connection located on the lower front panel.
The water flows to the water box through a float
valve, which shuts off water flow when the water box
is full.
Water then flows from the water box, through a
strainer, into the water pump where it is pressurized.
This pressurized water is pumped to the pressure
regulator which provides and maintains the desired
pressure setting.
Any volume of water not used in the cleaning
process flows from the pressure regulator to the
vacuum exhaust heat exchanger.
Water flows through the pre-heat radiator-type heat
exchanger where heat is transferred from the
vacuum pump exhaust. The heated water then
returns from the vacuum exhaust heat exchanger to
the water box.
If the temperature in the water box exceeds 180°F,
a temperature relief valve will open and bleed a
small amount of hot water into the waste tank,
allowing cool water to flow into the water box.
When the operator opens the tool valve, water flows
through the engine exhaust heat exchanger coils,
where it is heated from engine exhaust flowing
through it.
Next, the hot water flows from the engine exhaust
heat exchanger, through a check valve and
Y-strainer, to the outlet manifold. This is where
chemical injection occurs. The hot solution then
flows into the cleaning tool.
A small amount of hot water constantly bleeds
through the bypass manifold, which contains a small
orifice, to the water box.
A temperature switch on the heat exchanger outlet
will shut down the engine if the water temperature
exceeds 275°F. If this occurs, consult the
Troubleshooting section of this manual to determine
the cause of overheating before restarting your unit.

HEAT TRANSFER SYSTEM

See Figures 1 and 2.
Water is heated through a two stage heat exchange
system which utilizes engine exhaust and vacuum
pump exhaust.
Water flows through an inlet hose to the water box
and then to the water pump where it is pressurized.
It then travels to the pressure regulator manifold.
This manifold contains a nitrogen-charged
accumulator which helps reduce pressure
fluctuations and dampen water pump pulsations.
Any volume of pressurized water not used in the
cleaning process bypasses from the pressure
regulator manifold to the vacuum exhaust heat
exchanger.
BLAZER 980073 09/16/02
OPERATION
3-5