SECTION
3
BLUE
LINE THERMALWAVE
®
5M
15
4. SYSTEMS
NOTE: Read and understand this section of the
manual entirely before proceeding.
This portion of the manual divides the unit up into
systems and describes how each system works.
Prior to proceeding into the operations and
maintenance sections of this manual it is
recommended that you acquire a basic
understanding of how the unit functions.
WATER PUMPING SYSTEM
See figures 3-1 and 5-10. Cold water enters the
console through the water inlet connection located
on the lower right corner of the right lower front
panel. The water then flows to the water box
through a float valve, which shuts off the water
when the water box is full.
Water then flows through a strainer in the water
box to the water pump. The water pump is
plumbed to a nitrogen charged accumulator, which
helps reduce pressure pulsations.
The water pump assembly also includes a high-
pressure and a low-pressure shutdown switch.
These switches will shut down the unit if the water
pressure exceeds 1200 PSI or drops below 50 PSI
for more than 5 seconds.
Water is then pumped to the pressure regulator
assembly, which provides and maintains the
desired pressure setting.
Water then flows from the pressure regulator
through the heli-coil heat exchanger and into the
high- pressure heat exchanger, where it is super-
heated by the engine exhaust.
The water then flows through the check valve
manifold that contains a Y-strainer and a check
valve. At this point, the chemical injection takes
place.
The hot solution mixture of water and chemicals
then flows through the solution outlet manifold to
the cleaning tool.
This unit has an automatic diverter feature.
Temperature is controlled using the thermostatic
control. When the water exceeds the temperature
setting, the electronic rotary solenoid valve
automatically positions the diverter valve, located
between the engine exhaust manifold and the hi-
pressure heat exchanger, into the muffler mode. At
this time hot water is bypassed into the water box
to preheat the water, resulting in reduced
temperature fluctuations. The temperature sensor is
located in the thermostat manifold, before the
solution outlet.
In addition, a temperature sensor is located on the
engine exhaust heat exchanger outlet. This will
shut down the engine if the water temperature
exceeds 285 deg. F. If this occurs, see the
“
Troubleshooting
” section of this manual to find
the cause of overheating prior to restarting your
unit.
