NetaJet Dosing Unit Table of contents Table of contents ......................2 Introduction ........................4 What is the system intended for...................4 Advantages........................4 NetaJet ........................4 Applications .........................6 Structure & Specifications:...................7 NetaJet dosing unit basic materials: ................7 Schemes and Drawings: ....................7 Inlet / Outlet Dimensions....................9 Water supply:.......................9 Fertilizer dosing capacity ...................10 Installation........................11...
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NetaJet NMC User & Installation Manual Table Of Contents Parts list & Description....................32 Venturis & Booster Pump Specifications..............35 Tips for calibrations … … … … … … … ………………………………………………………39 Warrenty And safety...……………………………………………………………………...42 Safety instructions...………………………………………………………………………...42 Installation and maintenance…...………………………………………………………….42 Preparing the stock of acid/lye...………………………………………………………….42...
NetaJet dosing units. The aim of this manual is to assist and enable technicians and skilled growers to install, commission and maintain the NetaJet dosing unit. What is the system intended for Netafim’s Netajet dosing units enable growers to precisely control their fertilizer and acid quantities as well as their irrigation water quantities. Advantages Netafim’s next-generation dosing systems meet the most demanding modern irrigation...
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NetaJet NMC User & Installation Manual Introduction Hydraulic principle Netajet OPTIONAL Figure 1- Hydraulic principle Notice: pH measurement and control is standard nevertheless the systems can be supplied with EC measurement if required.
NetaJet Dosing Unit Applications The most common application of the NetaJet is the direct distribution method: the dosing unit circulates the nutrient solution to the various crop sections. With this direct distribution method, the NetaJet is only active during Fertigation. The NetaJet can be used for overhead irrigation, drip irrigation, etc’.
NetaJet NMC User & Installation Manual Structure & Specifications Structure & Specifications: This chapter describes the structure of the Netajet dosing unit, its main components, sizes and dimensions. The role of the various components is explained. NetaJet dosing unit basic materials: The NetaJet is equipped with the following components: •...
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NetaJet Dosing Unit Figure 3 - Netajet Back View Figure 3 – Side drawing (inches dimensions)
NetaJet Dosing Unit Fertilizer dosing capacity • Maximum dosage capacity will be achieve in the minimum operating pressure of 30 PSI (in the main line), at this pressure, the dosage capacity per fertilizer channel is 60 Gallon/hour and per acid channel is 15 Gallon/hour. •...
NetaJet NMC User & Installation Manual Installation Installation This chapter details the hydraulic and electrical installation instructions for the Netajet dosing unit. The aim of this chapter is to enable and assist technicians and skilled growers to install and commission the Netajet dosing unit.
NetaJet Dosing Unit Hydraulic installation There are a few rules and recommendation that must observed when installing the Netajet dosing units: General requirements Water supply Prior to Netajet installation the following points must be observed and dealt with: • Filtering: An 80-mesh filter must be installed before the Netajet dosing unit.
NetaJet NMC User & Installation Manual Installation • The fertilizer tanks must be installed as close as possible to the Netajet. It is recommended to keep a maximum pipe length of 10 meters. Nevertheless there has to be enough space between the fertilizer tanks themselves and between the Netajet so that inspection and maintenance operations can be carried out.
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NetaJet Dosing Unit • A distance of about 6.5 foot should be maintained between inlet and outlet connections of the NetaJet to the irrigation mainline (see drawing below). • It is important to ensure proper turbulent flow between Bypass water and irrigation water in the mainline.
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NetaJet NMC User & Installation Manual Installation water meter Figure 6 - Installation with Filter...
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NetaJet Dosing Unit Typical installation...
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NetaJet NMC User & Installation Manual Installation...
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NetaJet Dosing Unit Electrical and controller installation Electrical Grounding Electrical equipment can be destroyed or slowly damaged by voltage spikes, lightning hits, etc’. Proper electrical grounding in combination with the NMC-64 internal protections is essential to protect the system, reduce the risk of damage and prolong its lifetime.
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NetaJet NMC User & Installation Manual Installation Independent ground rods will increase the risk of current, from a lightning strike for example, being dissipated through one rod and reentering the system through an adjacent rod. • Location; Close to the main circuit breaker panel and in moist soil. For example in an area that is usually wet from a drip or a low spot where water drains.
NetaJet Dosing Unit Ground connection What Should Be Grounded? Any equipment that is or could become energized, even accidentally, should be grounded. Current from lightning, strikes objects in a random fashion. Accounts of lightning strikes reveal scenarios most of us could not predict. Electric circuits should be wired with a 3-wire conductor consisting of hot, neutral and grounding wires.
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NetaJet NMC User & Installation Manual Installation Electrical connection – 3X480VAC Pictures will be change...
NetaJet Dosing Unit PH Transmitter & Sensor connection and calibration Typically the pH transmitter will be supplied wired and connected to the NMC-64, nevertheless it should be checked and calibrated after system installation. Connecting pH sensor to Transmitter: 1. Connect wire (HI) to connector 10. 2.
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NetaJet NMC User & Installation Manual Installation Allowing the PH sensor to dry out, will damage and is not covered by warenty. Connecting pH transmitter to NMC-64 controller 1. Connect pH transmitter to NMC-64 analog input card as follows: 2. pH transmitter’s connector 1 to analog card’s connector Red.
NetaJet Dosing Unit EC Transmitter & Sensor connection and calibration Typically the EC transmitter will be supplied wired and connected to the NMC-64 (if ordered as option), nevertheless it should be checked and calibrated after system installation. Connecting EC sensor to Transmitter: 1.
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NetaJet NMC User & Installation Manual Installation Inpu 12VDC Figure 8 – EC sensor & transmitter’s connections to Analog input card...
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NetaJet Dosing Unit NMC-64 EC & pH definitions and calibration 1. Menu 8.2 - Install / Analog Input 1: Define pH sensor No. 1 on input number 6. 2. Menu 7.7 - CONFIGURATION / EC pH SENSOR RANGE: Define table as follows: Sensor 4 mA 20 mA...
NetaJet NMC User & Installation Manual Installation NNM-64 Installation - Getting started This paragraph briefly explains how to get started with the NMC-64 software setup procedure. For further explanations please refer to the NMC-64 User & Installation Manual. For initial configuration of the controller start with Menu 6: Setup.
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NetaJet Dosing Unit EC/pH Setting Define whether fertigation is according to EC/pH and set injection definitions. Table # Table description NMC64 Setup EC PH calibration Adjust the calibration factor so that the Value is similar to the value shown on the EC&pH transmitters Test Relays...
NetaJet NMC User & Installation Manual Installation NetaJet Commissioning When commissioning the NetaJet, keep to the following procedure: • Ensure that the outlet of the NetaJet to the water distribution system is closed; • Fully bleed the NetaJet pump. The pump must not run dry. Consult the pump supplier's documentation for how to bleed the pump.
NetaJet Dosing Unit Installation requirements Pressure sustaining valve The pressure sustaining valve is used to ensure that the NetaJet works against constant pressure and should be added to the system whenever the mainline pressure fluctuates more than 0.5 bars. The pressure sustaining valve (PSV) is installed on the main line after the NetaJet inlet and ensures the pressure doesn’t drop below the set value.
NetaJet NMC User & Installation Manual Installation Maintenance In order to ensure reliable and optimal operation and extend system life cycle regular maintenance must be cried out. The NetaJet dosing unit and its immediate environment must be kept clean by removing dust, water and chemicals from the dosing unit.
NetaJet NMC User & Installation Manual Installation Venturis & Booster Pump Specifications Water Suction Capacity – Injector Inlet Pressure 5 – 50 PSI * Number in parenthesis indicate the injector outlet pressure when suction stop (Zero Suction Point)
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NetaJet Dosing Unit Water Suction Capacity – Injector Inlet Pressure 60 – 120 PSI * Number in parenthesis indicate the injector outlet pressure when suction stop (Zero Suction Point)
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NetaJet NMC User & Installation Manual Installation Goulds Pump – Model NPE...
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NetaJet Dosing Unit Dimensions and weight System type [Inch] [Inch] [Inch] [Inch] [Inch] [Inch] [Inch] NetaJet NMC 1 ½ 46.95 28.34 24.8 System type Package Net weight (lb) Gross weight (lb) NetaJet NMC...
NetaJet NMC User & Installation Manual Installation Tips for calibrations Before running the NetaJet, a calculation has to be done in order to understand what are the dosing capabilities. The following data is part of the calibration process and has to be consider before the system operation: •...
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NetaJet Dosing Unit The same calculation can be done for the acid channel: Acid injection capacity Gallon Maximum quantity that can be delivered by an acid channel: 1500 Gallon Main line capacity Gallon Gallon Gallon 1000 1500 Gallon 1500 Gallon 1000 Gallon Example B: Ec calibration according the system capabilities...
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NetaJet NMC User & Installation Manual Installation The recommended value is between 50% - 70% of the fertilizer channel limitation, means: 0.67 X 70% = 0.47 Gallon of fertilizer from each channel to be inject per 1000 Gallons that flows through the main line.
NetaJet Dosing Unit Warranty and safety Safety instructions This chapter describes the safety instructions that should be applied when installing, using and maintaining all NetaJet dosing units. Installation and maintenance The dosing unit must always be switched off before installation or maintenance work is carried out on it.
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