6-1: Water and Chemical System
6 - Water and
Chemical System
This section describes the TMTG 4000 water and chemical systems, and includes the
exhaust subsystem.
1. The process starts when fresh water is brought through the front of the truckmount
into the water box, as indicated in Figure 6-1. The level of water in the box is
maintained by the use of a float valve. The water is then gravity-fed to the pump
where it is pressurized.
2. Next, the pressurized water enters the by-pass valve. This valve allows manual
adjustment of the pressure level. When the valve at the wand is closed, the water
in the system is recirculated to the water box. When solution is being used at the
wand, the necessary amount of high pressure water passes through the by-pass
valve and to the heat exchanger.
3. In the heat exchanger, the temperature is raised. The heat necessary to do this is
provided by both the engine and blower exhausts. The heated water then travels
to the high pressure manifold.
4. Water temperature is controlled via a temperature sensor inside the high pressure
manifold. When the system achieves the maximum operating temperature, the
high pressure solenoid opens and flows water into the recovery tank. This will
reduce the internal temperature of the machine.
5. Water that is recirculated through the pressure regulator back to the water
box travels past a thermal valve. This thermal valve monitors the water box
temperature.
6. When the thermal valve senses the water in the water box has reached its set
point, it opens the low pressure thermal valve on the side of the water box and
closes once the temperature drops back below the set point (see Figure 6-2).
7. The water that is being called for by the wand then exits the manifold and passes
through a check valve (see Figure 6-2).
8. The chemical is pressurized by the HydraMaster diaphragm chemical pump
attached to the head of the water pump. This pump pulls the chemical from the
chemical or soap jug through the chemical flow meter (see Figure 6-3).
9. After being pressurized, the chemical travels through the metering valve and is
injected into the high pressure stream. This solution then exits the front of the
truckmount and is delivered to the cleaning tool (see Figure 6-2).
Summary of Contents for Truckmount to Go TMTG 4000
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Page 5: ...iii TMTG 4000 Owner s Manual ...
Page 31: ...3 5 Cleaning Information ...
Page 33: ...3 7 Cleaning Information 16 2 Evolution Flood Wand Item 000 163 058 Only 6 8 lbs ...
Page 58: ...6 3 Water and Chemical System Figure 6 1 Flow Diagram View 1 of 3 000 179 038 Rev A ...
Page 59: ...Water and Chemical System 6 4 Figure 6 2 Flow Diagram View 2 of 3 000 179 038 Rev A ...
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