Curtis Dyna-Fog MAXI-PRO 2D ULV, Instruction Manual For Operation And Maintenance

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8
WORKING PRINCIPLES
An 18 Horsepower, electric start, four-cycle gasoline engine with a flexible coupling on
its output shaft is used to drive a positive displacement rotary-blower. The air entering
the blower is first filtered through a large stainless steel filtering element. The blower
supplies air pressure to the nozzle. The air pressure is adjustable between 2-8 PSI
(0.14 - 0.69 Bar) by varying the engine speed and/or removing the air bleed orifice at
the boom. The formulation is delivered to each nozzle by means of a variable speed
positive displacement, rotary gear pump that draws the formulation from the tank,
through a filter and 3-way valve, and into each nozzle. The nozzle has six stationary fins
that create a swirling effect of the air mass as it leaves each nozzle. In the center of this
swirling air mass is a liquid supply spray tube. The spray tube directs the formulation
into the air mass where it is sheared into billions of tiny droplets and dispersed into the
atmosphere.
This unit is equipped with a flushing system that is controlled from the remote control
unit. The flushing liquid is conveyed to the nozzles in the same manner as the
formulation.
The system must be flushed after each use. See following page the
Fluid Systems Diagram.
FLUID PUMPING SYSTEMS
There are two types of pumping systems available for the Maxi-Pro 2D:
1)
Diaphragm Pump : This high volume pumping system utilizes a diaphragm type
pump with a needle valve on its outlet port to regulate liquid flow. Once the liquid flow
rate has been set, this is the flow rate that will be obtained when the operator activates
the SPRAY ON/OFF switch.
2)
Rotary Gear-Pump : This pump is driven by a variable speed electric motor. All
functions are controlled from the remote control box. Once the pump has been set to
the desired flow rate, that flow rate will be obtained when the operator activates the
SPRAY ON/OFF switch. When adapted with the Dyna-Fog Radar Syncroflow feature,
the flow rate of the pump will automatically vary with vehicle speed.