Hog Technologies Stripe Hog SH8000, Operation Manual

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Stripe Hog Systems
Charge Water Pump
The charge water pump is a hydraulically powered
centrifugal pump that provides a constant supply
of water to the Ultra-high pressure pump. There
is a supply valve located between the clean water
tank and the charge water pump that controls the
flow of water. Always make sure there is at least a
half a tank of water and the supply valve is open
prior to engaging the charge water pump. If the
charge water pump is engaged while this valve
is closed or there is no water in the clean water
tank you will not be able to achieve required UHP
charge pressure and the charge pump impeller
could be damaged.
The charge water pump is activated by pressing
the rocker switch labeled “CHARGE PUMP” on the
console in the cab of the truck. (Refer to Start up
Procedure in the Operation section of this manual)
Once activated a green light will illuminate to con-
firm the charge water pump is engaged. A charge
pressure gauge located on the Joystick console
must be monitored closely when engaging the
charge water pump. Once engaged the pressure
should rise immediately above 10 psi (7 BAR) and
continue climbing to the normal operating pres-
sure of approximately 60 psi (4 BAR).
Water supply problems to the charge pump can be
indicated by low water pressure or by the sound
of the pump. Fluctuating pump RPM, inconsistent
high pitch wines and fluctuating charge water
pressures are indications of a water supply prob-
lem to the charge pump. If the pressure does not
immediately rise and the pump is whining, make
sure the valve is open, check both filters and/or
bleed the air from the system. Operators should
be familiar with the normal sound of the pump
and stop blasting if the sound changes. Find and
correct the problem before waterblasting opera-
tions resume.
Charge Water Pump Switch In Console
Joystick Console & PLC Charge Water Pressure Gauges
Clean Water Tank Level Sensor Charge Pump & Drain Valve