Netafim NETAJET 4G User manual
INSTALLATION MANUAL
V 002.01 - DECEMBER 2020
NETAJET
™4G
© COPYRIGHT 2020, NETAFIM™
NO PARTS OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN AN AUTOMATED DATA FILE OR MADE PUBLIC IN
ANY FORM OR BY ANY MEANS, WHETHER ELECTRONIC, MECHANICAL, BY PHOTOCOPYING, RECORDING OR IN ANY
OTHER MANNER WITHOUT PRIOR WRITTEN PERMISSION OF THE PUBLISHER.
ALTHOUGH NETAFIM™TAKES THE GREATEST POSSIBLE CARE IN DESIGNING AND PRODUCING BOTH ITS PRODUCTS
AND THE ASSOCIATED DOCUMENTATION, THEY MAY STILL INCLUDE FAULTS.
NETAFIM™WILL NOT ACCEPT RESPONSIBILITY FOR DAMAGE RESULTING FROM THE USE OF NETAFIM'S PRODUCTS
OR THE USE OF THIS MANUAL.
NETAFIM™RESERVES THE RIGHT TO MAKE CHANGES AND IMPROVEMENTS TO ITS PRODUCTS AND/OR THE
ASSOCIATED DOCUMENTATION WITHOUT PRIOR NOTICE.
FOREIGN LANGUAGES
In the event that you are reading this manual in a language other than the English language, you
acknowledge and agree that the English language version shall prevail in case of inconsistency or
contradiction in interpretation or translation.
CONTENTS
6
7
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9
9
10
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26
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26
27
27
28
Use of symbols
Introduction
General instructions
Safety instructions
Safety instructions when using acid/chemicals
Description
Features
Highlights
Advantages
Operating principle
Main components
Analog dosing channel
Dual dosing channel
Capabilities
Service
Maintenance
Add-ons
Dimensions
Weights
Modes
Main parts of the NetaJet™ 4G and its infrastructure
BP PL mode
BP ST mode
High-flow mode
Octa - 8-channel mode
IL PL mode
IL ST mode
On-site preparations
Infrastructure requirements
Pump house (Filter house / Fertilizer house) requirements
The water distribution system
The fertilizer/acid tanks and lines
Hydraulic infrastructure preparation
Location of inlet, outlet and fertilizer/acid line connectors
Continued on the next page
CONTENTS
Continued
29
29
30
30
31
32
33
35
35
37
39
41
42
Recommended flow meter pulse rate
Electrical preparation
Installation
Unpacking and placement
Hydraulic installation
Electrical installation
System operation
Preparations for running the NetaJet™ 4G
Running the NetaJet™ 4G
Dosing calibration
Calculation of dosing channel opening percentage
Simulation with a 10-liter (2-US-gallon) bucket of water
Calibration of the NetaJet™ 4G while irrigating
System calibration
Commissioning
Warranty
6 NETAJET™4G INSTALLATION MANUAL
USE OF SYMBOLS
ELECTRICAL HAZARD
Vontains instructions aimed at preventing bodily injury or direct damage to the NetaJet™ 4G
and/or the infrastructure in the presence of electricity.
WARNING
Contains instructions aimed at preventing bodily injury or direct damage to the crops, the
NetaJet™ 4G and/or the infrastructure.
CAUTION
Contains instructions aimed at preventing unwanted system operation, installation or conditions
that, if not followed, might void the warranty.
ATTENTION
Contains instructions aimed at enhancing the efficiency of usage of the instructions in the
manual.
NOTE
Contains instructions aimed at emphasizing certain aspects of the operation of the system or
installation.
SAFETY FOOTWEAR
Vontains instructions aimed at preventing foot injury.
TIP
Provides clarification, tips or useful information.
ACID HAZARD
Contains instructions aimed at preventing bodily injury or direct damage to the crops, the
product and/or the infrastructure in the presence of acid.
PROTECTIVE EQUIPMENT
Vontains instructions aimed at preventing damage to health or bodily injury in the
presence of fertilizers, acid or other chemicals.
EXAMPLE
Provides an example to clarify the operation of the settings, method of operation or installation.
The values used in the examples are hypothetical. Do not apply these values to your own
situation.
The symbols used in this manual refer to the following:
NETAJET™4G INSTALLATION MANUAL 7
INTRODUCTION
General instructions
• Installation must be performed by authorized technicians only.
• Refer to your supervisor if problems occur during the installation procedure.
• Installation should be performed on a hard, leveled floor or on a flat, hard, leveled plate.
• Do not apply force or pressure on components during the installation procedure.
• Verify that field components work properly.
• Make sure fertilizers and acid are on site at the time of installation.
Electricity
•
Ensure that a suitable electrical power supply is available in the vicinity of the installation for the NetaJet™ 4G
electrical connection (see Electrical preparation, page 29).
•
Ensure that an electrical socket is available in the NetaJet™ 4G vicinity, for installation and for service purposes.
Safety instructions
•All safety regulations must be applied.
•Ensure that the installation is carried out in a manner that prevents leaks from the NetaJet™ 4G,
the fertilizer/acid tanks and lines, the peripherals and the accessories (contaminating the
environment, soil or ambient area).
•When using acid, always observe the acid manufacturer's safety instructions.
•Electrical installation and troubleshooting should be performed by an authorized electrician only.
•The electrical installation must comply with the local safety standards and regulations.
•Installation should be performed by authorized technicians only.
•Protection provided by the equipment can be impaired if the equipment is used in a manner other than
that specified by the manufacturer.
CAUTION
Read the safety instructions section before beginning installation of the NetaJet™ 4G dosing unit.
WARNING
In agricultural environments - always wear protective footwear.
CAUTION
When opening or closing any manual valve, always do so gradually, to prevent damage to the
system by water hammer.
WARNING
Always use protective equipment, gloves and goggles when handling fertilizers, acid and
other chemicals!
NOTE
The maximum sound level produced by the equipment does not exceed 70dB.
WARNING
Measures must be taken to prevent fertilizer infiltration of the water source, to avoid water pollution.
8 NETAJET™4G INSTALLATION MANUAL
INTRODUCTION
Safety instructions when using acid/chemicals
ACID HAZARD
When using acid - always observe the acid manufacturer's safety instructions.
WARNING
Always use protective equipment, gloves and goggles when handling fertilizers, acid and
other chemicals!
WARNING
Exceeding the recommended acid concentrations will damage the dosing channels.
WARNING
Substances
such as chemicals for pest/disease control might be corrosive and damage the
NetaJet™ 4G. When using any substance
other than
fertilizers or acids not exceeding the
concentrations in the table above, always observe the manufacturer's instructions for corrosivity.
In case of any doubt, contact your local Netafim™ representative.
CAUTION
High concentrations of some fertilizer combinations might induce crystallization in the NetaJet's
lower manifold and cause clogging of the pipes.
These combinations should never be used in any
concentration in the dual dosing channel (Octa mode only)!
Fertilizer combinations prone to induce crystallization:
•
Calcium nitrate + ammonium sulfate => calcium sulfate
•
Calcium nitrate + potassium sulfate => calcium sulfate
•
MKP + calcium nitrate => calcium phosphate
•
MAP + calcium nitrate => calcium phosphate
•
Phosphoric acid + calcium nitrate => calcium phosphate
When injecting these fertilizer combinations:
•
Make sure to dilute each fertilizer to the allowed concentration in the fertilizer tank prior to injection
through the NetaJet™ 4G.
•
Immediately after each injection of any of the fertilizer combinations above, flush the NetaJet™ 4G
with clean water for at least 2 minutes.
In case of doubt regarding the use of any
combination of
fertilizers, contact your local Netafim™
representative.
ATTENTION
When dosing acid, use a dosing channel fitted with the appropriate components according to
the type
and concentration of acid used*:
For pH correction
For maintenance of drippers
Type of dosing channel
Diaphragm
and O-rings
Nitric acid
(HNO3)
Phosphoric
acid
(H3PO4)
Sulfuric acid
(H2SO4)
Potassium
hydroxide
(KOH)
Acetic acid
(CH3COOH)
Hydrochloric
(HCl)
Hydrogen
peroxide
(H2O2)
Chlorine (as
(hypochloride
For diluted acid EPDM <3% <85% <30% <35% <30% <10% <30% <1%
For concentrated acid
Viton <40% <85% <90% <10% <5% <33% <50% <10%
% is by weight at 21oC (70oF)
*The table indicates the resistance of the dosing channel components to acid,
and is not a recommendation to use the acids mentioned.
NETAJET™4G INSTALLATION MANUAL 9
DESCRIPTION
Features
•The NetaJet™ 4G realizes Netafim’s “grow more with less” concept. Based on Netafim’s unique
Nutrigation™ technology, it controls the amount of water and fertilizers used, optimizing resource
utilization for each specific crop and soil/substrate type.
•The NetaJet™ 4G is extremely accurate and reliable, preventing water and fertilizer waste while reducing
environmental pollution.
•The NetaJet™ 4G ensures very precise and homogeneous nutrient dosing for greenhouse crops.
•The NetaJet™ 4G is a modular CE-compliant dosing system that easily integrates with multiple
Netafim™ and third-party control and monitoring systems.
•
The NetaJet™ 4G always injects a uniform quantity of nutrients while performing perfect EC and pH control.
•The NetaJet™ 4G can accommodate a wide variety of dosing channels for fertilizer and
concentrated/diluted acid.
•The NetaJet™ 4G accommodates a wide variety of system pumps, peripherals and accessories to meet
a vast range of applications and infrastructure constraints.
Highlights
•Equipped with Netafim's unique innovative
analog dosing channels for very accurate and
reliable EC/pH control.
•
Provides fast and accurate fertilizer and acid control.
•State-of-the-art technology with unique static
mixing chamber
•Short control cycle
•Efficient water, fertilizer and energy consumption
•Guaranteed EC and pH control
•Almost completely maintenance-free Venturi
operations – no moving parts
•Highly accurate dosing channels
•
Fast and efficient Nutrigation™ recipe adjustments
•Multi-lingual capabilities
•Made by Netafim™
Advantages
•Easy system installation and maintenance
•In-house developed offering
•Versatile flow capacity
•Covers all applications ranging from greenhouse in soil, to very intensive soilless media
•Requires minimal investment with rapid ROI
Operating principle
The NetaJet™ 4G doses the various fertilizers and acids into a homogeneous solution in its unique
HidroMix static mixing chamber and injects it into the irrigation water main line.
The suction of the fertilizers and acid in the dosing channels is based on the Venturi principle. This requires
a pressure differentiation - available on the main line or supplied by the main line pump or the NetaJet's
dosing booster.
Main components
•HydroMix static mixing chamber
•A compensation channel with a pressure regulator
•Factory-installed PRV at the inlet and a PSV at the
outlet
•Selectable analog dosing channels
•Dual EC/pH monitoring and control
•Quick-action dosing valves
•Wide range of integrated accessories and
peripherals
•High-quality components and PVC piping
•Aluminum, corrosion-resistant frame with
adjustable legs
10 NETAJET™4G INSTALLATION MANUAL
DESCRIPTION
Analog dosing channel
The NetaJet™ 4G is the first fertilizer-dosing system equipped with Netafim's unique innovative analog
dosing channel.
The analog dosing channel is the long-awaited solution for very accurate and reliable EC/pH control for
Nutrigation™ of high-value greenhouse crops.
The analog dosing channel is equipped with a servo motor capable of continuous variable opening from 0
to 100%. This unique feature allows unprecedented precise and seamless Nutrigation™.
Advantages
•Ultra-high precision
•Smooth and stable hydraulic operation
•No fluctuations
•Fast EC/pH set-point reaching
•Short stabilization time
•Enables short Nutrigation™ cycles
•No risk of cavitation damage to the booster
Stabilization time
The analog dosing channel offers the benefit of a
significantly shorter stabilization time compared with
the digital (pulsating) dosing channel (up to 50%).
This is particularly beneficial when performing short
Nutrigation™ cycles typical of greenhouse crops.
•X = Analog (continuous-variable) dosing channel
•Y = Digital (pulsating) dosing channel
Dual dosing channel
The NetaJet™ 4G Octa mode (8 dosing channels) includes 3 dual dosing channel.
The dual dosing channel is applicable with 50 l/h (13 GPH) and 600 l/h (158 GPH) Venturis.
Dual dosing channel schematic diagram
pH
Time (sec)
10
9
8
7
6
5
4
3
2
1
0
205
0
X
Y
Source water
352510 403015 45 50
Analog (continuous-variable) dosing channel
Digital (pulsating) dosing channel
pH set point
Digital (ON/OFF) vs. analog dosing channel
performances
ARotameter
BNeedle valve
CDosing valve
DCheck valve
EVenturi
A
B
CDE
A
B
CDE
CAUTION
There are fertilizer combinations that should never be used in any concentration in the dual dosing
channel! (see CAUTION, page 8)
NETAJET™4G INSTALLATION MANUAL 11
DESCRIPTION
Capabilities
NetaJet™ 4G modes fed by a pressurised main line are suitable for a vast range of main line pressures
•Standard: 2.5 - 5.8 bar (36.5 - 84.0 PSI)
•High pressure: 5.8 - 7.5 bar (84.0 - 108.5 PSI)
For main line pressures lower than 2.5 bar (36.5 PSI), consult Netafim™.
NetaJet™ 4G modes fed by a storage tank
The water level in the storage tank should not be higher than 5 meters (16.4 feet) above the NetaJet™ 4G
inlet.
Various dosing channel configuration options
•Most modes: Up to 5 highly accurate dosing channels of various types,
from 50 l/hr (13 GPH) up to 600 l/hr (158 GPH) each.
•Octa mode: Up to 8 highly accurate dosing channels of various types,
from 50 l/hr (13 GPH) up to 600 l/hr (158 GPH) each.
•High-flow mode: Up to 5 highly accurate dosing channels of various types,
from 50 l/hr (13 GPH) up to 1000 l/hr (264 GPH) each.
Service
The NetaJet™ 4G utilizes modular construction, making servicing a simple and quick process.
The dealer keeps a small quantity of interchangeable components on hand, for replacement on site within
a few minutes.
Maintenance
To prevent failures and extend the life cycle of the NetaJet™ 4G, regular maintenance must be carried out
by the user, such as periodic rinsing of filters and calibration of the EC and pH sensors.
Regular maintenance of the NetaJet™ 4G is a time- and cost-efficient process requiring no special tools or
skills.
Add-ons
You can extend the functionality of your NetaJet™ 4G by means of the the wide variety of useful add-ons.
All the add-ons are easy to connect to the NetaJet™ 4G - here are a few examples:
Fertilizer meter with electric output
Enables continuous reading of fertilizer dosing. Useful in applications where the costumer wants a broader
indication of fertilizer flow in addition to the EC and pH readings. Installed externally, controlled and
monitored by the
NetaJet™ 4G
NMC Pro controller.
Stock selection
Enables the dosing of multiple fertilizers through a single dosing channel (in cases where simultaneous
dosing is not required). Available in a wide variety of configurations, from a single channel with 2 fertilizers
to as many channels and fertilizers as required. Installed externally, controlled and monitored by the
NetaJet™ 4G
NMC Pro controller.
For further information on the NetaJet™ 4G add-ons, consult Netafim™.
12 NETAJET™4G INSTALLATION MANUAL
Dimensions
NETAJET 4GBPPL
H
D
W
External
dimensions
Mode
NetaJet™ 4G
external dimensions (W/D/H*)
Package dimensions (W/D/H**)
BP PL
123/90/134 cm (48/35.5/53") 131/112/158 cm (52/44/62")
BP ST
High-flow
Octa - 8-channel
IL PL
112/125/134 cm (44/49/53") 142/142/158 cm (56/56/62")
IL ST
*The height varies by ±1 cm (±0.5") according to the adjustment of the legs.
**The package height includes the pallet height of 15 cm (6").
NOTE
Allow 20 cm (8") arround the
NetaJet™ 4G for inlet, outlet and fertilizer pipes connections.
Weights
Mode
Net weight Packed weight
BP PL
130 -150
kg (
287-331
lbs)
180-200
kg (
397- 441
lbs)
BP ST
90-100
kg (
199-221
lbs)
140 -150
kg (
309-331
lbs)
High-flow
221-235
kg (
487-518
lbs)
255-275
kg (
562-606
lbs)
Octa - 8-channel
200 -215
kg (
441- 474
lbs)
275-295
kg (
606-650
lbs)
IL PL
130 -150
kg (
287-331
lbs)
180-200
kg (
397- 441
lbs)
IL ST
150 -190
kg (
331-419
lbs)
200-240
kg (
441- 529
lbs)
The weight ranges in the table above are order of magnitude only -
final weights, depending on the selected dosing booster, will be issued with the product order.
DESCRIPTION
NETAJET™4G INSTALLATION MANUAL 13
DESCRIPTION
Modes
•
BP PL
: Bypass system for pressurized-line water source; 5 dosing channels (see page 14)
•
BP ST
: Bypass system for storage-tank water source; 5 dosing channels (see page 16)
•
High-flow
: High-flow bypass system for pressurized-line water source; 5 dosing channels (see page 18)
•
Octa - 8-channel
: Bypass system for pressurized-line water source; 6-8 dosing channels (see page 20)
•
IL PL
: Inline system for pressurized-line water source; 5 dosing channels (see page 22)
•
IL ST
: Inline system for storage-tank water source; 5 dosing channels (see page 24)
Legend:
BP
Bypass
IL
Inline
PL
Pressurized line
ST
Storage tank
Main parts of the NetaJet™ 4G and its infrastructure
The list below presents the main parts of the NetaJet™ 4G and the parts of the infrastructure required for
the operation of the NetaJet™ 4G various modes.
1Dosing channel + Venturi
2Dual dosing channel + Venturis
3
Inlet
pressure gauge
4Outlet pressure gauge
5
Lower
manifold pressure gauge
6Main line pressure gauge
7Sampling outlet
8Controller
9EC/pH transducer
10 Dosing booster switchbox
11 pH sensor
12 EC sensor
13 Dosing booster
14 Check valve
15 Pressure switch
16
Pressure sustaining valve (PSV)
17 Pressure reducing valve (PRV)
18 Air release valve
19 Mixing chamber
20 Compensation channel
21 Onboard main line pump
22 Upper manifold filter
23 Main line pump
24 Main line filter
25 Main line water meter
26
Main line
pressure sustaining valve (PSV)
27 Manual valve (isolation)
28 Irrigation valve
29 Fertilizer/acid filter
30 Manual valve (fertilizer)
31 Fertilizer/acid stock tank
Color code:
Supplied (part of the NetaJet™ 4G) Not supplied (part of infrastructure).
14 NETAJET™4G INSTALLATION MANUAL
DESCRIPTION
BP PL mode
Bypass system for pressurized-line water source.
Operating principle:
The pressure differential required to generate fertilizer suction via the Venturis
is produced by a booster pump integrated in the NetaJet™ 4G. This mode of
operation, where the lower manifold is under low pressure (around 0 bar/PSI),
permits the use of high-efficiency Venturis with high suction capacity and low
motive flow consumption.
Suitable for main line flow rate:
20-120 m³/h (90-500 GPM)
Flow limitation depends on the fertilizer injection rate and the size of the Venturis.
Suitable for main line pressure:
•Standard: 2.5-5.8 bar (36.5-84.0 PSI)
•High pressure: 5.8-7.5 bar (84.0-108.5 PSI)
For main line pressures lower than 2.5 bar (36.5 PSI), consult Netafim™.
Dosing channels:
Accommodates a wide variety of highly accurate dosing channels for fertilizer and concentrated/diluted acid:
•Up to 5 dosing channels of various types, from 50 l/hr (13 GPH) up to 600 l/hr (158 GPH) each.
•Optional - Concentrated acid channel, 50 l/h (13 GPH).
Total fertilizer/acid suction capacity - up to 3000 l/h (792 GPH).
Controller:
NMC-Pro (Operation with third-party controllers is optional. Consult Netafim™.)
EC/pH:
Precise single or dual monitoring and control - selectable by customer.
Front view Back view
16 NETAJET™4G INSTALLATION MANUAL
DESCRIPTION
BP ST mode
Bypass system for storage-tank water source.
Operating principle:
For systems operating at low pressure - from an on-ground reservoir or a storage
tank [max. height: 6 meters (20 feet)].
The main line pump also serves as dosing booster pump.
Suitable for main line flow rate:
15-100 m³/h (66-440 GPM)
Flow limitation depends on the fertilizer injection rate and the size of the Venturis.
Suitable for main line pressure:
The water level in the storage tank should not be higher than 5 meters (16.4 feet) above the NetaJet™ 4G inlet.
Dosing channels:
Accommodates a wide variety of highly accurate dosing channels for fertilizer and concentrated/diluted acid:
•Up to 5 x 50-600 l/hr (13-158 GPH)
•Optional - Concentrated acid channel, 50 l/h (13 GPH)
Total fertilizer/acid suction capacity - up to 3000 l/h (792 GPH).
Controller:
NMC-Pro (Operation with third-party controllers is optional. Consult Netafim™.)
EC/pH:
Precise single or dual monitoring and control - selectable by customer.
Front view Back view
18 NETAJET™4G INSTALLATION MANUAL
DESCRIPTION
High-flow mode
High-flow bypass system for pressurized-line water source
Operating principle:
The pressure differential required to generate fertilizer suction via the Venturis
is produced by a booster pump integrated in the NetaJet™ 4G. This mode of
operation, where the lower manifold is under low pressure (around 0 bar/PSI),
permits the use of high-efficiency Venturis with high suction capacity and low
motive flow consumption.
Suitable for main line flow rate:
80-400 m³/h (350-1760 GPM)
Flow limitation depends on the fertilizer injection rate and the size of the Venturis.
Suitable for main line pressure:
•Standard: 2.5-5.8 bar (36.5-84.0 PSI)
•High pressure: 5.8-7.5 bar (84.0-108.5 PSI)
Dosing channels:
Accommodates a wide variety of highly accurate dosing channels for fertilizer and concentrated/diluted acid:
•Up to 5 x 50-1000 l/h (13-265 GPH)
•Optional - Concentrated acid channel, 50 l/h (13 GPH)
Total fertilizer/acid suction capacity - up to 5000 l/h (1320 GPH).
Controller:
NMC-Pro (Operation with third-party controllers is optional. Consult Netafim™.)
EC/pH:
Precise single or dual monitoring and control - selectable by customer.
Front view Back view
20 NETAJET™4G INSTALLATION MANUAL
DESCRIPTION
Octa - 8-channel mode
Bypass system for pressurized-line water source, with 8 dosing channels.
Operating principle:
The pressure differential required to generate fertilizer suction via the Venturis is
produced by a booster pump integrated in the NetaJet™ 4G. This mode of operation,
where the lower manifold is under low pressure (around 0 bar/PSI), permits the use
of high-efficiency Venturis with high suction capacity and low motive flow consumption.
Suitable for main line flow rate:
20-120 m³/h (90-500 GPM). Flow limitation depends on the fertilizer injection rate and the size of the Venturis.
Suitable for main line pressure:
•Standard: 2.5-5.8 bar (36.5-84.0 PSI)
•High pressure: 5.8-7.5 bar (84.0-108.5 PSI)
Dosing channels:
Accommodates a wide variety of highly accurate dosing channels for fertilizer and concentrated/diluted acid:
•Up to 8 x 50-600 l/h (13-158 GPH)
•Optional - Concentrated acid channel, 50 l/h (13 GPH)
Total fertilizer/acid suction capacity - up to 4800 l/h (1268 GPH).
CAUTION
The Octa mode (8 dosing channels) includes 3 dual dosing channels. There are fertilizer combinations
that should never be used in any concentration in the dual dosing channel! (see CAUTION, page 8)
Controller:
NMC-Pro (Operation with third-party controllers is optional. Consult Netafim™.)
EC/pH:
Precise single or dual monitoring and control - selectable by customer.
Front view Back view
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