Hog Technologies Stripe Hog SK2000, Operation Manual

Page: 72 / 166

72
Operation
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 pres-
sure.
• Consider spray bar width. Choose a spray bar
2” wider than the line being removed to pro-
vide steering tolerance plus slight over spray
to reduce the potential for missed areas and
need to back up and re-do sections.
• Pre-clean the work area with a power broom
if necessary before blasting.
Water Blasting Operation Do’s and Don’ts
Do’s
• STOP blasting before stopping the truck.
Blasting with the unit stopped will damage the
pavement, spray bar and blast head.
• STOP blasting before changing direction.
• If there is any doubt about the correct spray
bar for the job, choose a less aggressive spray
bar.
• Adjust the forward speed and head rotation
to remove 98% of the paint in a single pass
to eliminate a second pass and more potential
for damage.
• Adjust the pressure for the pavement. Typically
a blast pressure between 32,000 and 38,000
psi is used.
• Check and clean the vacuum filter frequently to
ensure strong vacuum pressure while blasting.
A dirty filter and low vacuum will leave exces -
sive paint chips and debris on the pavement
slowing productivity.
• Check the charge pressure before blasting
operations begin. Change both filters if charge
water pressure is below 60 psi (4 BARS) before
beginning operations.
• Monitor the water flow to the stuffing boxes
frequently to ensure a steady stream is flowing
to cool and lubricate the packing.
Digital Gauges In Control Switch Panel
• Monitor charge pressure frequently during
blasting operations to ensure proper charge
water pressure while blasting.
• Check the pavement frequently and watch the
outer edges of the lines for damage. Continu-
ously make adjustments as required.
Don’ts
• Do not allow untrained personnel to operate
Stripe Hog equipment.
• Do not continue blasting with a damaged
nozzle. It can cause damage, wastewater,
reduce the power of other nozzles and slow
production.
• Avoid running the blast head wheels on rumble
strips. Always adjust the Hog Arm and the
castor wheel support arms on the blast head
to keep the wheels off the rumble strips.
• Do not blast directly on sealed joints in the
pavement. Especially weather stripping on
bridges or airfields.