Spray Bar Lever
DOWN
(Toggle)
Circulating Lever
DOWN
Spray Wand Lever
UP
(Toggle)
Selector Lever
UP
Figure 4-20. Upper Valve Settings
3. Pull the circulating valve DOWN to open. (Figure
4-20)
4. Pull the selector valve UP to select the Reverse
Suction mode to begin the process.
5. Toggle the spray wand valve from Open (UP) to
close (DOWN) in one rapid motion two or three
times, making sure not to pause in the center.
• If equipped, then toggle the spray bar valve from
Open (DOWN) to close (UP) in one rapid motion
two or three times, making sure not to pause in
the center.
6. You are now ready to back ush the system.
Figure 4-21. Flush Tank
Back FlushBack Flush
DO NOT perform the Back Flush procedure until
you have properly completed the Reverse Suction
procedure to remove excess asphalt material from
the system back into the asphalt tank.
Follow government guidelines for
properly disposing of hazardous materials such
solvents. Consult local authorities or reclamation
facilities for more information. Never dumping these
chemicals onto the ground or into waterways.
Use the following procedure to back ush the system:
1. Park the distributor on level ground.
2. Ensure the ush tank is 90 percent full of solvent (to
allow room for expansion in the tank).
• Solvent can be reused, but replace it with fresh
solvent when it becomes too dirty to use.
ALWAYS loosen the ush tank ller
cap slightly to vent the tank. Tank pressure can build
up during the Back Flush cycle.
3. 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.
• Fuel valve (diesel burner only).
• Sampling valve.
• Circulating valve.
• Spray wand valve.
• Spray bar valve (if equipped).
4. Pull the selector valve DOWN to select other
operational modes. (Figure 4-20)
5. Open the ush valve by pulling the lever UP. (Figure
4-22 on the following page.)
44
Operation
L300 and L600 Tack Distributors 4-21
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