844-AB Sprayer control 17
Software 4.03
Pressure Regulating Mode
Pressure Regulating mode directs the 844-AB
to the location of the regulating valve
plumbing. Once established, this value should
not change unless the regulating valve is
physically moved to a new plumbing location.
For additional information about plumbing,
refer to the Plumbing and Installation manual
supplied with this kit.
The default value of bypass “BYP ” indicates
that the pressure regulating valve is plumbed
in a bypass line. If no changes are necessary,
press the Program key to accept the value
and advance to the next step.
Figure 4-27: Pressure Regulating Mode
(Bypass Mode)
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NOTE:
Once the bypass mode is selected and the
console is set to “manual” mode, the
pressure regulating valve should close
when the Plus key is pressed and open
when the Minus key is pressed.
If the pressure regulating valve has been
plumbed into in a supply line to the booms, it
is considered a “throttling position”. Use the
Plus or Minus keys to change the displayed
value to “THR” (throttling mode). By doing this,
the polarity that the console uses to control
the regulating valve will be reversed.
Figure 4-28: Pressure Regulating Mode
(Throttling Mode)
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NOTE:
Once the throttling mode is selected and
the console is set to “manual” mode, the
pressure regulating valve should open
when the Plus key is pressed and close
when the Minus key is pressed.
Press the Program key to accept the entry
and advance to the next step.
Minimum Pressure Setting
The Minimum Pressure Setting establishes
the minimum pressure the sprayer will
regulate. When the vehicle slows down, the
control system will sometimes regulate the
pressure so low that it falls below the
manufacturer’s recommended pressure for
the spray tip. It may also reduce system flow
to the point where the flow meter will stall.
To avoid these situations, the 844-AB can be
programmed to avoid regulating below the
pressure established with this setting. If the
default setting of 10 PSI (0.7 bar) is used, the
pressure will not fall below 10 PSI (0.7 bar)
while spraying in automatic mode.
Use the Plus or Minus keys to adjust the
value.
Press the Program key to advance to the next
program step.
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