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Section 2 - Stripe Hog Systems
1 MICRON
FILTER
10 MICRON
FILTER
Two Stage Filter System
Charge Water/Low Pressure Purge/Flush Valve
Filters
A two stage filter system in the supply line between
the charge pump and high pressure pump removes
any small debris that may accidentally find its way
into the water supply tanks. The first stage filter is
a 10 micron (Nominal) filter to trap larger particles.
The second stage filter is a 1 micron (Absolute)
filter to trap smaller particles that pass through the
first filter. A pressure sensor on the 1 micron filter
prevents the UHP pump from running if low charge
pressure is sensed.
The filters are critical to the proper operation of
the high pressure blasting system and should be
checked frequently and replaced as necessary. Dirty
charge water filters are the number one reason for
low charge water pressure that can cause the UHP
pump to cavitate and reduce the flow of lube water
to the packing seals in the UHP pump. Therefore it is
normal and recommended that the filters be checked
frequently and changed whenever the charge water
pressure drops below 40 PSI (2.8 Bar.)
Operating with dirty filters can cause:
• Unwanted particles forced through the filter
resulting in premature failure of the parts.
• Cavitation in the UHP pump which will result in
damage to the pump.
• Reduced flow of lube water to the packing seals
which could damage the seals.
Remember that the filters can be under pressure.
Always make sure the charge pump is off, the aux
-
iliary engine PTO is disengaged and the pressure
has been bled from the system before removing the
filter caps. You should also thoroughly flush the filter
canisters and charge water system when the filters
are changed and before activating the Ultra-High
Pressure system. A purge valve located on the low
pressure (charge water) side of the pump is used
to purge the system after a filter change or to flush
the charge water side of the pump if the system
becomes contaminated.
CAUTION
LOW CHARGE WATER PRESSURE CAN QUICKLY DAMAGE
THE UHP PUMP. THE OPERATOR MUST MONITOR THE
CHARGE WATER PRESSURE CLOSELY AND IMMEDIATELY
SHUTDOWN THE UHP PUMP, WATER BLASTING SYSTEM AND
CHARGE WATER PUMP IF LOW CHARGE WATER PRESSURE
IS INDICATED.
USE THE FOLLOWING PROCEDURE TO SHUTDOWN WATER
BLASTING SYSTEM AND CHARGE WATER PUMP:
• Turn the key SWITCH off to shutdown the
auxiliary engine, UHP pump and water
blasting system.
•
Stop the truck
• Turn all switches off and speed dials to 0
and set the parking brake
Summary of Contents for SK5500
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Page 80: ...80 NOTES...
Page 135: ...135 Section 5 Scheduled Maintenance Hog Technologies...
Page 141: ...141 Appendix 2 Tools Spare Parts...
Page 142: ...142 Appendix 2 Tools Spare Parts...
Page 143: ...143 Appendix 3 Daily Report Pre Op Checklist 1 877 HOG ROAD WWW STRIPEHOGSUPPORT COM...
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