MAXX 450D/470D/Diesel Page 1-7
HydraMaster Corporation
T
he MAXX heat exchanger system is a highly engineered cleaning plant designed
by HydraMaster Corporation. The system utilizes a dynamic heating system
comprised of three separate heat exchangers for capturing “free heat”.
The water flow is as follows:
Water is fed into the machine under tap pressure to the water box.
The water is then picked up by the high pressure pump and pressurized to the
desired level. The water then splits flow, as demanded by the technician.
The majority of the water flows to the bypass valve assembly, then back
through the blower exhaust heat exchanger, and back to the water box. The
water demanded by the technician flows from the water pump, through the
engine coolant heat exchangers, then through the engine exhaust heat
exchanger and out to the cleaning tool.
When the cleaning solution reaches a preset high temperature, it activates the
exhaust diverter valve control, which prevents the exhaust gases from entering
the exhaust heat exchanger. Once the solution temperature falls below the set
point, the exhaust diverter valve activates to allow the exhaust gases to flow back
through the exhaust heat exchanger. If the exhaust diverter valve becomes inop-
erable for any reason, the high pressure solenoid valve is activated to release the
heated water from the system and is directed to the recovery tank. Then cool
water enters the
system to regulate the temperature.
As there is no guess work in the manufacture of these highly advanced cleaning
plants, there must be none in preparing it to get the job done in the field. It is the
purpose of this manual to help you properly understand, maintain and service your
cleaning plant. Follow the directions carefully and you will be rewarded with years
of profitable, trouble-free operation.
It is imperative that no section be overlooked when preparing for operation of this
equipment.
System Operation
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