Hog Technologies HT1000SR, Руководство по эксплуатации

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Section 3 - Operation
3.4 Ground Hog Operating Guidelines
Overview
Before you start the job, you should evaluate the
pavement and material to be removed. Choose
the appropriate spray bar and nozzles best suited
for the job. You should also consider the desired
or expected profile of the blasted surface in your
selection. There are many variables that affect
blasting efficiency, productivity and the profile
of the blasted surface. As the operator becomes
more experienced, the selection process becomes
more refined and easier.
Generally, large, high volume (.013 - .015) nozzles
are the most aggressive and provide faster results.
However, they also provide greater potential for
damage and a coarse profile. Consequently, high
volume nozzles should be used only on strong
pavement (concrete or newer pavement). Small,
low volume (.007 - .011) nozzles are less aggres-
sive and will provide somewhat slower results but
provide less potential for damage and a smoother
profile. Low volume nozzles are well suited for
weak pavement (older or damaged pavement).
Low volume nozzles are typically a better choice
for inexperienced operators on any surface.
Hog Technologies offers an on-site training pro -
gram that dramatically reduces the learning curve
and increases productivity. If you are new to water
blasting, we highly recommend that you consider
this factory training for your operators. You can
also contact Hog Technologies Customer Service
department for assistance in choosing spray bars
and nozzles or more information regarding the
factory training program.
CAUTION
THE BLASTING SuRFACE WILL BE dAMAGEd IMMEdIATELY
IF HIGH PRESSuRE BLASTING IS ACTIvATEd WITHOuT THE
GROuNd HOG MOvING. ALWAYS MAKE SuRE THE GROuNd
HOG IS MOvING BEFORE SquEEZING THE LEvERS ANd
SuPPLYING HIGH PRESSuRE TO THE SPRAY BAR.
Before Blasting Operations Begin
• Evaluate the Pavement and Select a Spray Bar.
• Strong pavement withstands high aggression
spray bars. This is generally concrete or new
asphalt.
• Cracked pavement is weak and will require a less
aggressive spray bars.
• Brittle pavement is a challenge and will require
less aggressive spray bars and reduced pressure.
• When removing paint lines, consider spray bar
width. Choose a spray bar 2” wider than the line
being removed to provide right/left tolerance plus
slight over spray to reduce the potential for missed
areas and need to re-do sections.
• Pre-clean the work area with a power broom if
necessary before blasting.
Engaging The Water Blasting System
1. Position an operator on the power system.
1. Position an operator on the Ground Hog and posi-
tion it a short distance before the material to
be removed.
2. Make sure all control valves are set to the OFF
position or 0.
3. Activate the power system by following the manu-
facturer’s startup instructions.
4. Raise engine speed to the operation RPM and set
the pressure (refer to Section 3.3)
5. If necessary, activate the vacuum system.
6. Make sure the Ground Hog operator is ready, then
turn activate the high pressure water and vacuum
systems.
7. With the Hog Tool moving at the desired speed,
squeeze the high pressure control valve to send
high pressure water to the spray bar and begin
blasting operations.
8. Use the hydraulic brake control knob to make final
adjustment to the spray bar rotation speed.
Remember, never activate UHP pressure at
the blasting head while the Hog Tool is not
moving.
9. Make sure to keep an operator stationed at the
power system control panel at all times during
water blasting operations. The power system op-
erator must be prepared to immediately respond
to commands from Ground Hog operator or shut-
down the system in an emergency.