The spray bar height can be manually set in a lower or
higher position via two bolts on the bar. Reinstall the
bolts securely before spraying.
NOTE: Set the spray bar height at the lowest
position on windy days to maintain the
proper spray pattern and prevent material
waste.
To operate the spray bar:
1. Align tow vehicle with the
area to be covered.
2. After determining width of
the spray pattern needed,
open each individual spray
bar nozzle valves by turning
the valve counterclockwise,
according to the width of
the area you’re covering.
(Figure 4-19)
Nozzle
Valve
Figure 4-19. Spray
Nozzle
Open the spray bar nozzle valves
BEFORE opening the spray bar valve to prevent
the lines from becoming pressurized and possibly
spraying hot tack on the operator or bystanders.
3. Ensure the spray wand, circulating, ush and
sampling valves are all CLOSED. (Figure 4-16 on
Page 4-18.)
4. Pull the selector lever DOWN to select other
operational modes.
5. Turn ON the liquid asphalt valve by turning the valve
right.
6. Open the spray bar valve by pulling the lever DOWN.
7. Slowly move tow vehicle forward along coverage
area. When nished, close the spray bar valve by
pulling the valve lever UP. (Figure 4-16 on previous
page.)
8. Perform the Reverse Suction and Back Flush
procedures described on the following pages.
When moving from one job site to
another, turn the individual nozzle valves OFF to
prevent dripping.
CLEANING THE SYSTEM
Cleaning the distributor system daily prevents asphalt
material from clogging components. Allowing tack
material to build up in the system where it will harden
will block the hoses, piping and nozzles, rendering the
distributor inoperable and requiring costly repairs.
Properly cleaning the distributor system is a two-step
process that must be performed in this order:
Reverse Suction: This procedure pulls the asphalt
material from the plumbing circuit back into the asphalt
tank.
Back Flush: This procedure circulates solvent
throughout the system to clean residual asphalt material
from components and piping, returning the used solvent
back to the ush tank for reuse or disposal.
DO NOT ush the system until you
have properly completed the Reverse Suction
procedure to remove excess asphalt material from
the system back into the asphalt tank.
Reverse SuctionReverse Suction
The Reverse Suction mode creates a vacuum that
pulls material from the distributor system and plumbing
circuit. This is an extremely important process for
proper machine operation, and should ALWAYS be
done when spraying is complete and before ushing
the system.
NOTE: If moving from one job site to another,
perform the Reverse Suction procedure
before moving to the next job site, and again
at the end of the day before ushing the
system.
To perform the Reverse Suction procedure:
1. Park the distributor on level ground.
2. Ensure the liquid asphalt valve is in the OFF position,
and the following valves are in the CLOSED position
before proceeding. (Refer to Page 3-6 and 3-7,
Valve Controls.)
• Propane tank valve.
• Pilot valve.
• Shut-Off valve.
• Burner valve.
• Sampling valve.
• Flush valve.
Operation
L300 and L600 Tack Distributors4-20
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