37
Section 3 - Operation
Startup Procedure
1. Make sure the Ground Hog control lever and
hydraulic brake control valve are in the OFF
or 0 position.
2. If the Ground Hog UHP hoses have been re-
connected since the last operation, the UHP
system will need to be purged. Remove the
spray bar and set it in a safe, clean location
with the nozzles facing up. If the hoses have
not been reconnected since the last operation,
skip this step.
3. Start the power system engine and allow it to
warm up for several minutes.
4. If the spray bar was removed in step 2, acti-
vate the UHP system at low pressure to purge
the system. Then shutdown the power sys-
tem, install the spray bar and follow the start-
ing procedure to restart the power system. If
the spray bar was not removed, skip this step.
5. Make sure the UHP system is operating nor-
mally and ready for waterblasting.
6. With the Ground Hog in the hands of the op-
erator, tilted so the nozzles can be seen and
pointed in a safe direction, a support person
monitoring and controlling the UHP power
systems and all personnel clear, slowly raise
the throttle to a safe operating RPM.
7. Activate the Ground Hog UHP lever and gradu-
ally raise the RPM on the power system engine
to increase pressure. Monitor all systems as
the pressure increases to the desired blasting
pressure. Be ready to shutdown the system if
a problem occurs.
8. Check the nozzle spray pattern and the spray
bar weep holes for leaks.
9.
Check all high pressure hose fittings and com
-
ponents for leaks. If leaks are found, shutdown
all systems and correct the problem before
waterblasting.
NOTICE:
ANY LEAKING uHP FITTINGS, SWIvEL SEAL OR NOZZLES
MuST BE CORRECTEd. HIGH PRESSuRE WATER LEAKS
WILL quICKLY dAMAGE FITTINGS, SEALS OR BLASTING
HEAdS IF THEY ARE NOT AddRESSEd.
10. Slowly turn the hydraulic brake control valve
counterclockwise to verify spray bar rotation.
Then set the desired spray bar RPM.
Spray Bar Rotation Control Valve
11. Release the UHP control lever to stop UHP
pressure to the spray bar and lower the blast
head to the ground.
12. With the pressure and spray bar RPM set and
Ground Hog nozzles working properly, water-
blasting operations can begin.
WARNING
ANY CONTACT WITH HIGH PRESSuRE WATER IS vERY
d A N G E R O u S A N d C A N B E FATA L ! u S E E X T R E M E
CAuTION dIRECTING THE PRESSuRE STREAM WHEN HIGH
PRESSuRE IS ENGAGEd.
UHP Pressure Control Valve (Dump Valve)
Содержание HT1000SR
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