Hog Technologies STRIPE SH7500, Operation Manual

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Section 2 - Stripe Hog Systems
Ultra-High Pressure Pump
The Ultra-High Pressure pump (UHP) is a positive
displacement pump that requires a constant water
supply from the charge water pump at a minimum
of 30 PSI (2 BAR) to operate properly and prevent
cavitation. The operator must monitor the charge
water pressure closely and immediately shutdown
the waterblasting system if the charge water pres-
sure drops below 30 psi (2 BAR) to protect the
charge water pump from running dry and protect
the UHP pump from damage due to overheating
and cavitation.
The high pressure pump is powered by the main
truck engine through the OMSI Drive PTO that is
activated by the PTO switch in the control panel.
The PTO switch also activates the solenoid which
enables the hydraulic rotation of the spray bar
that is controlled by the Head Rotation dial. The
transmission PTO switch on the truck dash acti-
vates the hydraulic system. Green LED lights in the
console switches illuminate to indicate the pump
and spray bar hydraulic rotation are activated.
When the system is activated, the DUMP VALVE
40K switch activates or turns off high pressure
water to the Hog Head spray nozzles.
When the high pressure is turned off by the DUMP
VALVE 40K switch, the diverter valve (dump valve)
located on the UHP pump is activated to divert
the water from the Hog Head pressure lines to
the bypass line and back to the clean water tank.
The dump valve is a safety feature that enables
high pressure water supplied to the blast head to
be immediately reduced to less than 100 PSI (7
Bar) at any time without causing damage to the
high pressure lines and components.
Maximum operating pressure for the UHP pump
of 40,000 PSI (2,758 Bar) @ 8.5 gallons (32 Li-
ters) per minute is achieved at maximum engine
operation RPM (Typically 1800 RPM). Ultra-high
water pressure is monitored by the High Pressure
analog gauge on the pump and a digital gauge in
the control panel.
Ultra-High Pressure Pump Components
1. High Pressure Gauge 4. High Pressure Pump Manifold
2. High Pressure Sensor 5. Manual Bypass Valve
3. Diverter Valve 6. Rupture Discs
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