Dynamicfluid4 Pressure Regulation - Hardi COMMANDER DELTA FORCE Instruction Book

Pressure SmartValve (Green symbols)
This valve is to select which function the pressurized liquid from the
pump will be routed to.
The active function is indicated by the indicator. The handle is turned so
the indicator points to the label for required function. If handle is turned
to a position without label (unused function) then the valve is closed.
Main tank
Internal tank cleaning
(Rinsing nozzles)
Suction SmartValve (Blue symbols)
This valve is to select suction from main tank or from the rinsing tank.
The handle is turned so the label for required function is directed to the
indicator. If handle is turned to vertical position (indicator not pointing
at a label) then the valve is closed.
Main tank
External filling (optional)

DynamicFluid4 Pressure Regulation

Traditional fluid regulation starts, when the nozzles are opened. With DynamicFluid4 (DF4), the regulation is a continuous
process, even if the nozzles are closed. A synthetic and a stainless steel disc regulate the pressure and ensure quick reaction
and zero leakages. Used parameters are sprayer speed, PTO speed and the number of activated sections. The benefit is more
precise application rates from the second the sprayer begins spraying.
The DF4 uses feed forward technology based on 5 sensors, which feed the JobCom computer with data necessary for
optimal regulation. It auto-primes at start-up and starts to move the valve towards the final position, immediately after the
operator makes changes. For example, when section valves are opened or closed, the regulation valve is started at the same
time as the section valve motors are started. This avoids overpressure situations e.g. after running empty and refilling of the
main tank.
The 5 sensors are also back-up for each other, ensuring that the system can continue regulation - even if one or more sensor
signals fails. The applied sensors measure:
1. Sprayer speed (km/h)
2. Fluid flow (l/min)
3. Fluid pressure (bar)
4. Pump speed (rpm)
5. Regulation valve opening angle (°)
Features for DF4
• Very fast and accurate regulation when all sensors are ok, setup in menus are correct, and pump, filters and valves are
in good condition.
• Quick reacting valve, when sections are turned ON/OFF, and at speed changes.
• Optimized AutoSectionControl feature that predict boom sections to open and optimized nozzle pressure.
• Optimized for different PTO systems.
• Nozzle surveillance. No setup or tuning is required for nozzle change.
Spraying
Pressure draining (optional)
or TurboFiller
Rinsing tank
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