6-18
Rosco Maximizer 3B Asphalt Distributor
Operation
Bar Width
Bar width is determined by monitoring the switch
positions on the main control panel. There is a linkage
on each spray valve that makes it possible for the
operator to mechanically disengage or engage the valve
linkage from each valve. The operator can manually
turn off spray nozzles every 4” along the length of the
spraybar in this manner.
The Maximizer 3B Asphalt Distributor has a variable bar
width. The operator can extend or retract the right , the
left, or both halves of the spraybar. An algorithm is used
to limit the movement of the bar in 4” increments.
If the operator toggles the Extend or Retract Switch
one time the bar moves 4”. If the operator holds the
Extend or Retract Switch the bar moves until the switch
is released or until the limits of travel are reached. The
bar locates the closest 4” increment of travel once the
switch is released.
The outside left and right spray bar sections (ranging
from 4 feet to 8 feet per side) are controlled in one foot
sections with three spray valves per foot. The inside left
and right 4 foot center sections are controlled in 4 foot
sections with three spray valves per foot.
Burner
The control system enables a relay that allows the
burner to be ignited. If the temperature should exceed
the high temperature set point in the controller; a relay
will turn off the burner, (
). The burner will also
turn off if the distributor ground speed exceeds 5 MPH.
Temperature Set Point Screen
Figure 6-11
LOAD (Button 3 of the Mode Selection Screen)
This mode of operation is used to fill the
distributor with material. Fill the tank no more
than 80% to 90% full to allow for material
expansion.
TRANSFER (Button 4 of the Mode Selection Screen)
The distributor can be used as a pumping
station without placing material in the tank.
The TRANSFER mode of operation is used to
transfer emulsified asphalt from one location to
another.
UNLOAD - HAND SPRAY (Button 5 of the Mode
Selection Screen)
Use this mode of operation to remove excess
material from the tank or to hand spray using the
spray wand.
REVERSE SUCTION (Button 6 of the Mode Selection
Screen)
REVERSE SUCTION mode of operation removes
material from the spray bar. It should always be
used to remove material from the spray bars and
other piping at the end of the work day before the
spray material has a chance to cool and thicken.
REVERSE SUCTION mode should always
precede the AUTOMATED Clean-out mode of
operation.
AUTOMATED CLEAN OUT (Button 7 of the Mode
Selection Screen)
This function automatically starts a cycle to
circulate solvent through the asphalt pump,
valves, and plumbing as a means of cleaning.
This is a timed process once started. Used
solvent is placed in the enviroflush tank.
OFF (Button 8 of the Mode Selection Screen)
OFF mode of operation is the startup condition of
the Maximizer. The asphalt tank valve is closed
and a pathway is opened between the asphalt
pump and the spraybar.
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