Pressure Regulator, General Instructions

Don’t use the sprayer without having consulted the enclosed handbook.

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12unigreen

4.8PRESSURE REGULATOR

To use the pressure regulator, follow the instructions in the enclosed handbook scrupulously. The pressure regulator controls all of the most important spraying functions, the thorough knowledge of its functions makes work easier and more precise.

The working pressure and the maximum pressure of the sprayer are determined by the pressure regulator which also protects the circuit from overpressure in any work conditions. (In serious but very rare cases, if the connecting pipes get blocked the pressure relief valve lets the pressure off)

In some setups there may be a pump that can reach a pressure of 50 bar con- trolled by a regulator designed for 20 bar. In this case the maximum pressure that can be reached is 20 bar.

The regulators can be manual, mounted on the sprayer or at a distance to make the controls easier to use; or electrical with a control panel in the cabin.

There are also regulator versions with mechanical remote controls with a cable. If the tractor has a waterproof cabin the use of electrical controls is obligatory.

4.8.1 COMPONENTS OFTHE PRESSURE REGULATOR

Below you will find the indications for the main models fitted on Unigreen products.

A main ON-OFF command: “open” lets the fluid flow into the circuit in use; “closed” empties the tank.

B maximum pressure valve: adjusted by hand with the relevant knob (drains the excess liquid when the set pressure is reached).

C jets section tap: opens the corresponding jet boom or drains to the compensation regulator (G).

D auxiliary tap: can be used for various accessories (it is always manual). E volumetric pressure valve (proportional):

(when present) it regulates the spraying pressure. The valve automatically compensates variations in speed (within the scope of the same gear ratio), keeping the quantity of liquid supplied per surface unit (litres/hectare) unchanged.

F self-cleaning filter: filters the delivery liquid.

G compensation regulators: suitably regulated, these make it possible to keep the pressure constant when one or more sections of jets is closed, they don’t influence treatments with the boom fully open.

H manometer: indicates the working pressure.

Connections:

R1 supply union

R2 drain union

R3 volumetric drain union

R4 jets section delivery union

R5 auxiliary delivery union

Control box for GCP ELETTRICO electrical regulators

I1 main control valve switch

I2 volumetric pressure valve switch (proportional)

I3 jets section valves switches

4.8.2 GENERAL INSTRUCTIONS

When using the pressure regulator, scrupulously observe the instructions in the enclosed handbook, below you will find generic indications for the major models fitted by Unigreen.

All the regulation and adjustment tests must be carried out with clean water.

Pressure regulators without a volumetric valve (GCP3-way - GRH-RVA) Adjusting the maximum pressure valve

=put main control A in the drain position (“OFF”).

=loosen the hand wheel of maximum pressure valve B completely (anticlockwise).

=start the pump by activating the power-takeoff of the tractor at 540rpm

=open main control A (position “ON”), the manometer will be activated

=open all of the section valves C (position “ON”)

=adjust maximum pressure valve B to the working value (in any case less than the safe maximum pressure the system can reach).

AP APC, DEVIL, serie EOLO, EXPO, SIRIO specifications

Unigreen is recognized for its innovative agricultural machinery, particularly in the realm of spraying technology. Among its flagship products are the SIRIO, EXPO, DEVIL, AP APC, and the EOLO series, each designed to cater to the diverse needs of modern-day farming.

The SIRIO line is particularly lauded for its versatility and efficiency. This series is engineered for precision application, equipped with advanced GPS technology that allows for automatic section control. The ability to adjust spray patterns and flow rates in real-time ensures minimal waste and optimal coverage, which translates to both economic and environmental benefits. Its durable construction also promises longevity, making it a reliable choice for farmers looking for investment-worthy equipment.

The EXPO series is tailored for open-field spraying. It boasts an impressive working width and can cover large areas quickly. The EXPO's multifunctional design includes a user-friendly interface, allowing operators to monitor and adjust performance easily. This model emphasizes user comfort and safety, featuring advanced anti-drip systems to minimize environmental impact during operation.

Next, the DEVIL is particularly noteworthy for its compact design and agility. Ideal for vineyards and orchards, the DEVIL allows for precise application in constrained spaces, facilitating detailed and targeted treatments. Its lightweight build ensures easy maneuverability without sacrificing power, and the robust motor guarantees consistent performance.

The AP APC series stands out for its multi-purpose functionality. This range is designed to perform well under diverse environmental conditions, making it suitable for various crops. The addition of a high-capacity tank allows for extended working hours without frequent refills, enhancing productivity. Furthermore, its low-center-of-gravity design improves stability on uneven terrains.

Lastly, the EOLO series showcases Unigreen's commitment to eco-friendliness. These machines feature low-drift nozzles that keep the chemicals where they are needed most, which helps in minimizing off-target application. The EOLO series also incorporates energy-efficient technologies, reducing fuel consumption and greenhouse gas emissions.

In summary, Unigreen's SIRIO, EXPO, DEVIL, AP APC, and EOLO series represent a blend of innovation, efficiency, and environmental responsibility. Each model is designed to meet the specific requirements of various agricultural environments, ensuring that farmers can operate at peak efficiency while contributing to sustainable farming practices.