27
OPERA
TION
WARNING
To prevent possible burns from hot asphalt
spray: Do not stand, or allow anyone to stand,
where accidental opening of a valve may
cause contact with hot asphalt.
After sucking back for approximately 2 minutes,
open the right or left end valve for approximately one
minute to let air into the system, then repeat for the
other side. You must hear a positive indication of
vacuum for proper suckback. Suck a quart of solvent
through each of the end valves, once the spray bar is
properly sucked back when using hard asphalts like AC.
Close the suckback valves.
Reduce the asphalt pump speed to 100 gpm.
Open the self-flush valve located on the strainer box.
This will allow diesel fuel to enter the system and wash
out the pump.
After 2 minutes, shut the self-flush valve.
Turn the “Master Power” switch off.
If the unit is equipped with auto wash option, turn
the electric pump on with the flush valve open and as-
phalt pump turned off and run for 2 minutes. This will
place a quart of diesel fuel on top of the asphalt pump
for better starts after long periods of shutdown.
If not equipped with the electric pump, it is helpful
to pour some diesel fuel down the fill line after all op-
erations are completed. The diesel fuel will remain in
the pump overnight to keep the pump free for the next
morning’s operation.
Figure 9. Valve Positions for Suck Back of the Spray Bar.
nient way to store 5 different preset application rates.
These settings are saved in the memory even after the
master power switch has been shut off.
To store an application rate in a memory location,
set the digital display to “Gal/Sq Yd using the “Change
Display switch.
To set a memory, push that preset button in and hold
it in. While holding it in, set the application rate to the
desired value using the “Application Rate” toggle
switch. To raise the application rate hold the applica-
tion rate switch up and to lower the application rate,
hold the application rate switch down. When you have
the application rate set to the desired value, release the
memory button. The displayed application rate will be
stored in that memory location until it is over written
with a new application rate using the same procedure.
Suckback from the Cab
Set all of the valve positions first.
Raise the spray bar and fold the wings up.
Turn the “Rotary Actuator” knob to the “Load/Suck-
back” position.
Run the pump at 200 gpm using the circulation rate
switch in the cab or set the pump control to “rear” and
adjust the pump speed with the rear pump control knob.
Remember the gpm reading is displayed only in the
cab.
Suck
Back
Off
Hand
Spray
Hand Spray Valve Positions
4 Way Valve
Load/Suckback
Suction Valve
Closed
Suck Back
Valve
Open
Handspray
Valve
Off
Suckback
Control Cylinder
Extended
Transfer Valve
Closed
Hand Spray
Valve
Closed
Transfer Line
Suck Back
Valve
Closed
Return Valve
Open
Flush Valve
Closed
Butterfly Valve
Cylinder Retracted
Butterfly Valve
Closed
Summary of Contents for Black-Topper Shooter II
Page 3: ...2 ...
