Installation Quick Start

Transcript

HortiMaX-Go! Installation Manual SV 0.0 18/07/2017 160211MAN040 96000000 HortiMaX B.V. Honderdland 131 2676 LT Maasdijk The Netherlands Mailing address P/O box 33 2676 ZG, Maasdijk The Netherlands Tel: +31(0)15 3620300 Website: www.hortimax.com E-mail: [email protected], [email protected], [email protected] All efforts have been made to ensure the accuracy of the contents of this manual. Should any errors be discovered, however, HortiMaX B.V. would greatly appreciate being informed of them. The above notwithstanding, HortiMaX B.V. can assume no responsibility for any errors in this manual or their possible consequences. This product is subject to the General Conditions of HortiMaX B.V.. This document may not be copied or made public by means of print, photocopy, microfilm or any other process, without the written permission of HortiMaX B.V.. Publication date: 18/07/2017 14:39    160211MAN040    Item code: 96000000 Contents 1 Preface 1.1 Documentation overview 2 Installation 2.1 Requirements 2.2 Brief description of individual components 2.3 Schematic view of the system 2.4 Installation and commissioning instructions 2.5 HortiMaX-Go! Control panel cabinet 2.5.1 Location and connection requirements 2.5.2 Connecting supply voltage (power supply) 2.5.3 Fieldbus 2.6 Smart Switches 2.6.1 Assigning addresses to Smart Switches 2.6.2 Location and connection requirements 2.6.3 Connecting equipment and contacts 2.6.4 LED indications 2.7 MTV-Go! 2.7.1 Installation instructions 2.7.2 Representative location 2.8 Meteo-Go! 2.8.1 Location 2.8.2 Sharing a weather station 2.8.3 Network connection 3 Configuration 3.1 System settings 3.1.1 New start 3.1.2 Scanning 3.2 Configuration settings 3.2.1 System date/time 3.2.2 Location 3.2.3 Time zone and location 3.2.4 Network 3.2.5 Purple tiles 3.3 Climate controls 3.3.1 Configuring the air vents and screens 3.3.2 Setting controls and periods 3.4 Irrigation controls 3.4.1 Assigning valves 3.4.2 Valves simultaneously 3.4.3 Calibrating the EC and pH sensors 3.4.4 Setting up flow sensor 4 4 5 5 5 7 8 9 9 9 10 11 12 13 14 14 15 16 16 17 17 17 18 19 19 19 19 21 22 22 23 24 24 24 24 26 27 27 27 27 28 HortiMaX-Go! 1 Preface Welcome to the installation manual for the HortiMaX-Go!. This manual is intended for dealer/installers. It contains specific information on how to install and operate the HortiMaX-Go!. The HortiMaX-Go! is an easy-to-use and affordable control computer designed specifically for the horticultural sector. With the HortiMaX-Go!, you can control both the irrigation and the climate inside your greenhouse. The HortiMaX-Go! is easy to customize by choosing unique ‘Smart Switches’ that can be installed in a plug-andplay manner. The HortiMaX-Go! is also a breeze to operate using its touchscreen display. By using the CloudBox and the HortiMaX-Go! app, you can even operate the HortiMaX-Go! remotely with your smartphone. You can manage your Cloudboxes, controllers and app users on the HortiMaX-Go! CloudBox Portal. This manual was originally published in Dutch and English. 1.1 Documentation overview For more information, please consult the online help or the following manuals: HortiMaX-Go! user manual The OEM (Original Equipment Manufacturer) documentation provided Scan the QR code to access the online help. help.hortimax-go.com 4 HortiMaX-Go! 2 Installation 2.1 Requirements The following components are required to install the HortiMaX-Go!: I. II. III. IV. V. HortiMaX-Go! controller. HortiMaX-Go! Smart Switches. 2x 120Ω terminal resistor. Bus cable, model 'Cat5e'. Cables between the system and Smart Switches. Cable diameter: AWG 24. VI. Supply voltage: 110V-230V 50-60hz with Ground (Earth) connection. VII. Power source(s): 24VDC. VIII. 1x HortiMaX MTV-Go! sensor unit per zone and 1 Meteo-Go! weather station (locally or in the network). IX. Local network with DHCP router for shared weather data and Internet connection. X. If applicable, calibration solutions for the EC and pH sensors. XI. Required screwdrivers: 1. Phillips screwdriver PH1 for the sensor unit 2. Flat-blade screwdriver VDE flat 4.0 mm for unlocking terminals (included with the MTV-Go! or FertiMiX-Go!) To install the control panel cabinets (switch cabinets), motor control units and other equipment: cables, mounting materials and various tools. 2.2 Brief description of individual components Image Name Description HortiMaX- Panel cabinet with built-in HortiMaXGo! conGo! panel PC, which runs the controller trol panel software. cabinet HortiMaX FertiMiXGo! Dosing unit for mixing fertilizers, including HortiMaX-Go! control panel cabinet. HortiMaX- Individual HortiMaX-Go! panel PC runGo! ning the controller software. Installation dimensions H118 x W196 mm. 5 HortiMaX-Go! Image Name Description HortiMaXGo! Smart Switch Switch for the automatic (computerized) and manual control of connected equipment. Various versions available. HortiMaX MeteoGo! All-in-one weather station for measuring the solar radiation, outside temperature, outside humidity, wind direction and wind speed. It is also capable of detecting rain and its GPS location. HortiMaX MTV-Go! Sensor unit for measuring the ambient temperature and humidity inside the greenhouse. MTV-Go! Smart Switch Individual sensor unit board for MTVGo!. Terminal resistor 120 Ω resistor for closing the fieldbus. Motor con- Switch boxes for increasing the power trol units level of motors and other equipment (MCB) or devices. May contain various versions of Smart Switches. Product insert 6 Insert included with every product. Contains essential information about the correct use of the product. HortiMaX-Go! Image Name Description Address list List allowing you to specify which Smart Switches have been assigned to which addresses in the system. 2.3 Schematic view of the system Every HortiMaX-Go! configuration is designed in a modular fashion according to the principles below. For the sake of clarity, the example below includes only a limited number of Smart Switches have been used in this example. Since the HortiMaX-Go! is a modular system, every system will vary both in the number of Smart Switches and the number of HortiMaX-Go! controllers. The FertiMiX-Go! is always equipped with its own controller. No. Description 1 HortiMaX-Go! controller 2 Meteo-Go!/Alarm Smart Switch 3 Meteo-Go! weather station 4 MTV-Go! sensor unit for measuring the temperature and humidity 5 Ventilation Smart Switch 6 Vent motor 7 Heating Smart Switch 7 HortiMaX-Go! No. Description 8 Pipe heating 9 HortiMaX-Go! CloudBox 10 Smartphone 11 Tablet device A Fieldbus network (RS485) B Local network - LAN Backbone C Internet (router) 2.4 Installation and commissioning instructions Step Description 8 1 Unpack the required materials and check for defects. 2 Examine the descriptions included with the equipment. 3 Assign addresses to all Smart Switches using the instructions provided on the address list, zone and product stickers. 4 Install the control panel cabinet(s) and motor control units (MCBs), and then mount the Smart Switches in the desired locations. 5 Use the bus cable (type: Cat 5E ) to connect the Smart Switches and the controller in series. Install terminal resistors on the first Smart Switch and the last one. 6 Connect the 24VDC power supply/supplies, then connect the 'signal ground' to the earth (ground) of the control panel cabinet(s). 7 Activate the HortiMaX-Go! and the Smart Switches by switching the supply voltage on. 8 As the system has yet to be configured, the HortiMaX-Go! display will show the boot menu 'new start’. Select the desired language and system of units (Metric or US Custom), and then confirm your selections. 9 Tap the 'Play' button on the Scan screen. The system will detect the connected Smart Switches automatically. 10 Check whether all the connected Smart Switches are in the address list and there are no address conflicts or other problems. 11 Disable any valves and start contacts that are not connected, then disable any valve groups that are not required. 12 Configure the system settings, such as location, time and IP address. 13 Configure all the connected 'open-close' systems by entering the required settings, such as the run times and opening directions. 14 Calibrate the EC and pH sensors with the calibration solutions provided. Follow the calibration instructions on the display. HortiMaX-Go! 2.5 HortiMaX-Go! Control panel cabinet The HortiMaX-Go! control panel cabinet contains a panel PC (HortiMaX-Go! controller), a Smart Switch with an alarm output and a weather station connection. 2.5.1 Location and connection requirements Bear in mind the following when choosing a location for the control panel cabinet: 1. Make sure that the cabinet is easy to access 2. Keep the cabinet out of direct sunlight, so the display is easy to read Keep out of reach of rain, condensation water and sprinkler irrigation 3. Do not exceed the maximum field bus length (500 metres) 2.5.2 Connecting supply voltage (power supply) The connection value of the cabinet's supply voltage is 110-230V, 50-60Hz. Proper grounding (earthing) is required. The cabinet's power supply is 24VDC with 1.8A. 9 HortiMaX-Go! 2.5.3 Fieldbus Communication with and between the Smart Switches occurs via a fieldbus. In order to prevent communication problems, the cables must be connected correctly. Use CAT5e cables to connect the Smart Switches to each other as follows: When connecting the Smart Switches in series, there should be no branches in the bus communication. Use the orange wire for connection 'A' and the orange-white wire for connection 'B'. Never use two twisted pairs of wires on the same bus terminal. If using two or more power sources, no potential difference may arise. Connect the blue/blue-white pair of twisted wires on V- to avoid any potential difference. Connect the V- of the control panel to earth (ground). 10 HortiMaX-Go! Never increase the supply voltage of the Smart Switches above 24VDC, as this will inevitably cause damage. Install additional power supplies if the distance between Smart Switches is too great and/or more power is required. 2.6 Smart Switches Smart Switches are the manual control switches used for the HortiMaX-Go!. In addition to an electrical circuit, these switches feature a processor and software. The Smart Switches perform specific control actions for the equipment connected to them. The switches are advanced control devices that can process a wide range of information, such as status and position determination and run and operating times. The installation engineer can also connect various contacts to the switches, such as end contacts, emergency stop contacts and thermal cut-out contacts (also called 'thermal protector contacts'). If such contacts are connected, the Smart Switch can use the collected status information for control purposes and relay the information to the central HortiMaX-Go! controller. This greatly enhances the system's reliability and allows alarms to be generated instantly if something goes wrong with your equipment. No. Meaning 1 DIP switch for setting the Smart Switch address 2 LED indicators for bus communication 3 Manual control knob (optional) 4 LED indicators for control actions active 5 Power supply and bus connections 6 Connections for peripheral equipment 11 HortiMaX-Go! If the controller and/or bus communication are non-operational, the Smart Switches will be unable to control the equipment automatically. However, using the control knob, you will still be able to adjust the Smart Switches manually, so you can turn equipment on / off, or, open / close it. In this situation, the equipment positions and operating times shown by the controller may differ from their actual values. 2.6.1 Assigning addresses to Smart Switches Up to 32 Smart Switches can be connected to the HortiMaX-Go!. The first installation step is assigning addresses to the Smart Switches. Each Smart Switch requires a unique address. This address is set with the DIP switch. That is why, in the software, a Smart Switch address is called the ‘DIP switch position’. By moving the small toggle switches (or 'dips') up or down, you can set a binary number that will be used as the Smart Switch address. Using the HortiMaX-Go! address list provided, you can set a unique address or DIP switch position for each Smart Switch. Each system includes an alarm/weather Smart Switch, with address 0, all 'dips' down. The alarm/weather Smart Switch is shared by all climate zones (i.e. greenhouse compartments). The other Smart Switches in the system need to be assigned to a particular zone. Each zone or compartment contains an MTV-Go! sensor unit. DIP switches 1, 2 and 3 determine which zone the Smart Switch belongs to. This means that there can be more than one Smart Switch in the same zone. DIP switches 4,5,6,7 and 8 determine the unique address or ID number of the Smart Switch (called 'DIP switch position’ in the software). Each ID number may only occur once for a particular HortiMaX-Go!. How to set the DIP switch position: Place the product sticker, included with the Smart Switch, in an empty spot on the wiring list. 12 HortiMaX-Go! Determine up to which zone the Smart Switch belongs (1 - 8). On the wiring list, place the relevant 'zone sticker' on the line of the Smart Switch next to the ID number. Set the DIP switch on the Smart Switch to the DIP switch position shown on the wiring list. If two Smart Switches are assigned the same address, one or both Smart Switches may not be detected during scanning. Even if only one of the Smart Switches is detected, the HortiMaX-Go! will not be able to use it as information from the other Smart Switch will also be coming in. The scan screen will show 'address conflict'. 2.6.2 Location and connection requirements 13 HortiMaX-Go! Smart Switches are not moisture resistant and have an IP rating of 20. Install the Smart Switch in a sealed cabinet that will protect the Smart Switch from moisture (IP65). Avoid direct sunlight on the Smart Switch cabinets. The terminals are spring terminals. Wiring requirements: I. Use ferrules if stranded wires are used. II. Use wires with a minimum diameter of 0.14 mm² and a maximum diameter of 2.5 mm². AWG 28-14. III. The desired length of a stripped wire is 6.0 mm. IV. To unlock the spring terminal, use the screwdriver provided (VDE flat 4.0 mm). 2.6.3 Connecting equipment and contacts Terminals 1-14 on the underside of the Smart Switch are the connections for inputs and outputs. The control signals and various contacts of the existing equipment are connected to these input and output connections. Always follow the connection instructions provided with the equipment. The Smart Switch outputs can send a plus or minus 24VDC control signal, depending on whether the connection to the common is plus or minus. Before connecting the limit contacts, remove the wire bridges. This functionality needs to be set up on the controller. Most equipment or devices are protected by a PKZ thermal cut-out (also called a 'thermal protector'). Most PKZ cut-outs are equipped with an auxiliary contact that is connected to the controller IOs. Remove the wire bridge and connect the output of the PKZ cut-out. The controller will generate an alarm alert if a thermal cut-out is tripped. You can also connect the PKZ alarm outputs of multiple devices in series (as a 'daisy chain'), in which case the alarm will also apply for the group of connected devices. In the event of an alarm, climate and irrigation control will remain active. The power supply to the equipment/devices in question will be interrupted. Use auxiliary relays if multiple devices need to be connected to one output or an AC control current is required. The maximum power level that can be controlled is 5 Watts. Certain Smart Switches are equipped with inputs for specific sensors. 2.6.4 LED indications The Smart Switches feature two types of LEDs on the bottom circuit board and the switch covers. Listed below are the meanings of the various LED indications: 14 HortiMaX-Go! 2.7 MTV-Go! The MTV-Go! is the indoor sensor unit of the HortiMaX-Go!. The MTV-Go! is a special Smart Switch, enclosed in a naturally ventilated dual housing, that is capable of measuring the greenhouse temperature and humidity levels. The electronic humidity sensor is located at one end (the bottom end) of the printed circuit board; the power supply and bus connections are located at the other end (the top end). The top end is installed in a moisture-resistant inner housing. 15 HortiMaX-Go! 2.7.1 Installation instructions Step Description 2.7.2 1 To install the sensor unit, first detach the entire outer tube from the top cover. 2 Then detach the inner housing from the top cover and screw it open (using the Phillips screwdriver PH1). 3 Set the DIP switch address, as described in "Assigning addresses to Smart Switches" on page 12. 4 Insert the cables through the cable gland and connect them, preferably using matching ferrules. To remove wires, use the flat-blade screwdriver provided (4.0 mm). 5 Close the inner housing tightly and reattach it to the top cover. 6 Reattach the outer tube to the top cover. 7 Hang the sensor unit in a representative location inside the greenhouse (see: "Representative location" below). Representative location The MTV-Go! sensor unit is essential for controlling the greenhouse climate. That is why it must be hung in a representative location inside the greenhouse. For tall crops, we recommend hanging the sensor unit in between the plants. For short crops, we recommend hanging the sensor unit just above the plants. Do not hang the sensor unit too close to a path or wall. Avoid an excessive bus cable length by hanging the sensor unit near to the other Smart Switches. Use the free Green-Green-White wire to feed power from a control panel cabinet (housing the Smart Switches) to the sensor unit. Use the Brown (A) and Brown-White (B) wires for the return if the sensor unit is not the last device on the bus. This does require the Smart Switch before and after the 16 HortiMaX-Go! sensor unit to be located in the same control panel. 2.8 Meteo-Go! The Meteo-Go! weather station is used to measure the solar radiation, outside temperature, humidity, wind direction and wind speed. The Meteo-Go! is also capable of rain detection and automatically determining its GPS coordinates. The cable provided with the weather station is connected to the Weather/Alarm Smart Switch in the main control panel cabinet. 2.8.1 Location Install the weather station on a 25-mm pole 2 metres above the greenhouse roof. Choose a location that is free from shade and not too close to an exhaust such as a chimney. 2.8.2 Sharing a weather station If a location has multiple controllers, they can share the readings of the same weather station. To share the weather data, the controllers must be connected to the same network and each controller must have a unique ID number (called the 'Controller instance' in the software). To set the ID number, go to the configuration menu: 17 HortiMaX-Go! How to set a network connection is described in the following section. 2.8.3 Network connection There is one network connection on the rear side of the panel PC. The network connection is used for sharing the weather station data among multiple systems and to control the weather station remotely. No peripheral equipment for creating networks is supplied with the HortiMaX-Go! To create a network, use commonly available devices. If possible, use standard CAT 5 cables or higher and normal patch cables. Do not use cross cables between the controllers. Diagram The controllers can be incorporated in the company network with Internet access. See also "Netwerk". The system requires at least a router with DHCP service to determine the IP addresses. One or more network switches may also be required to connect to the network. The maximum length of a normally wired Ethernet network without extenders is 100 metres. 18 HortiMaX-Go! 3 Configuration Before you can start using the HortiMaX-Go!, it first needs to be configured. To do this, read through the following sections: "System settings" below "Configuration settings" on page 21 "Irrigation controls" on page 27 "Climate controls" on page 24 3.1 System settings When using the system for the first time, you will need to set the desired language and unit of measurement. You will also need to specify which components are present in the system. For instructions on how to do this, read through the following sections: "New start" below "Scanning" below 3.1.1 New start When you launch the software for the first time, you will be taken to the startup menu. This is where you need to set the display language and unit of measurement. Tap Language. A pop-up menu appears with language options. Select the desired language, then tap the OK button. Tap Unit of measurement. A pop-up menu appears with unit of measurement options. Select the desired unit of measurement, then tap the OK button. Once you have selected the desired options, you need to confirm them. Tap confirm. A pop-up menu appears. Select Yes. Tap the OK button. You have now run through the startup menu. The scanning screen will open automatically, see "Scanning" below. 3.1.2 Scanning The control switches of the HortiMaX-Go! are the Smart Switches. You need to specify which switches are present in the system. The connected Smart Switches are activated by scanning the system. If you are using the system for the first time, the scan screen will open automatically after the language selection. You can also access the scan screen by tapping the system time on the right-hand bar, and then navigating this path on the display: . Initially, the scan screen will be empty. This means that no Smart Switches have yet been detected. Tap the scan button. 19 HortiMaX-Go! The system will now start scanning for Smart Switches. Once scanning is complete, all Smart Switches detected in the system will appear. One or more of the components may have to be removed from the system configuration. This is necessary, for example, if these components are not being used or are not connected. If this is the case, change the configuration status of these components. Do this as follows: Tap the Smart Switch that you wish to disable/remove. A pop-up menu appears. Select the desired status. Tap the OK button. The status has been changed. If you wish to undo a change that you have made, go through the above steps again. Make sure that you select the 'Restore’ status. 20 HortiMaX-Go! Once you have checked all the components and made sure that the configuration is correct, tap the Save button. The system will now update the configuration automatically and then take you to the home screen. This screen will show you all the available climate and irrigation controls (also called programs). See also: . 3.2 Configuration settings After scanning, the system will contain all the required climate and irrigation controls. However, before you can set the controls to automatic mode, you will first need to enter certain configuration settings and control values. To access the configuration settings, tap the system time . Then tap the tile with the 'Configuration menu’ icon . The minimum required values are: Time, see: "System date/time" on the next page. Time format (12/24 hours), see: "System date/time" on the next page. Location (detect automatically), see: "Location" on the next page. 21 HortiMaX-Go! Time zone and location (set manually), see: "Time zone and location" on the facing page. Network address (if a network is required), see: "Network" on page 24. Physical components, see: "Purple tiles" on page 24. 3.2.1 System date/time To ensure that automatic control actions are performed at the desired times, the system date and time need to be set correctly. To access the time settings, tap the tile with the 'System settings’ icon . To get to this tile, navigate the following path: Check the System date/time. Change this if it is not set correctly. Tap Time format. A pop-up menu opens. Select the desired time format. You can choose from a 12-hour or 24-hour format. Tap the OK button. You have now set the system time. 3.2.2 Location The system's location is necessary to determine the sunrise and sunset times. If a Meteo-Go! is connected to your system, then the location can be detected automatically based on the internal GPS chip. The location settings can be found by tapping the tile with the 'System settings' icon . To get to this tile, navigate the following path: If you wish to enter the location yourself, please bear in mind that the HortiMaX-Go! uses the 'signed degrees ' format. For more information, please see "Time zone and location" on the facing page. 22 HortiMaX-Go! 3.2.3 Time zone and location Determining the location offset The time zone offset for summer time (daylight saving time) and winter time (standard time) can be determined based on the UTC (Coordinated Universal Time). The time zone offset is the number of hours/minutes that your local time differs from the UTC. This offset needs to be set for both summer time and winter time. The offset for summer time will usually be 60 minutes less than that for winter time. Since summer time and winter time does not come in effect at the same time worldwide, and given that the rules governing summer and winter time are not the same in all countries, it is not possible to determine summer or winter time automatically. That is why you will need to adjust the current time zone (summer or winter time) manually. Determining latitude and longitude manually A GPS location can be indicated in various ways. The HortiMaX-Go! uses the 'signed degrees' format. This means that: a positive longitude is used for the Eastern Hemisphere (this is east of Greenwich). a negative longitude is used for the Western Hemisphere. a positive latitude is used for the Northern Hemisphere (this is north of the equator). a negative latitude is used for the Southern Hemisphere. Example The following applies for a location in North America: The offset in hours: -5 hours The longitude: -83.17 The latitude: 30.79 This means that you need to enter the following on the HortiMaX-Go!: Time zone offset winter time [min] = -300. Time zone offset summer time [min] = -240. 23 HortiMaX-Go! 3.2.4 Network If the HortiMaX-Go! has been connected to the network correctly, the IP address will be retrieved automatically. The system uses the router's DHCP service to set the IP address. It is not possible to set the IP address manually. To retrieve the IP address automatically, go to the tile with the icon: Select 'Yes' for 'Obtain IP address automatically'. Check whether the IP addresses have been entered. If this is not the case, make sure that the cables have been connected properly and that the router has been set to DHCP server. If necessary, contact your network administrator. 3.2.5 Purple tiles The purple tiles represent the physical components (connected devices) in the system. Certain devices have specific properties or configuration settings that you can change. Other devices only display details that you can view. 3.3 Climate controls 3.3.1 Configuring the air vents and screens In order for ventilation and screen control to work correctly, the vent and screen run times need to be set. You also need to set the correct opening direction for the roof and side vents. If these settings are not entered correctly, the vents and screens will be adjusted to the wrong positions. 24 HortiMaX-Go! Run times Measure the run times with a stopwatch. Set the system in question (valve, screen or roof or side vents) to manual control and let it run from the fully closed position (0%) to the fully open position (100%) without interruption. Measure the time it takes for the system to fully open and fully close individually, as these run times can differ significantly. Connecting the limit contacts is important, as it will allow the controller to determine the motor's position more accurately. When the limit contacts have been connected, the run times can be determined automatically. Step 1: Connect limit contacts. Step 2: Select 'Yes' for the setting 'Limit switches connected'. Step 3: Set the device in question to a position that is not 0 or 100% with the control knob of the relevant Smart Switch. Step 4: Turn the control knob to 0% and wait until the limit switch engages. Step 5: Turn the control knob to 100% and wait until the limit switch on the other side is reached. Step 6: Turn the control know back to 0%. Step 7: Check whether the run times have been adjusted. If desired, turn the control know back to automatic mode. Vent opening direction Setting the vent opening direction is necessary in order to determine whether the vents are located on the leeward or windward side of the greenhouse roof. Various safety overrides and safeguards depend on this setting. To set the vent opening direction, use a compass to determine the correct compass point and select it in the software. 25 HortiMaX-Go! Many mobile phones include a compass app. Make sure to first calibrate the app according to the instructions on your phone. 3.3.2 Setting controls and periods How to set the automatic controls is explained in the HortiMaX-Go! User Guide. To enable automatic control, the minimum required settings are: I. II. III. IV. V. Period start/end times Stage temperatures Stage positions Automatic conditions Additional overrides (limit values) When a control is activated, the connected equipment will be adjusted to a fixed position that is either '0%' or 'off'. If this is not the desired position, turn the control knob of the Smart Switch to the 'off’ position after you have set the desired position manually. Once the controls have been set up, set the Smart Switches to the 'automatic’ position. 26 HortiMaX-Go! 3.4 Irrigation controls 3.4.1 Assigning valves 3.4.2 Valves simultaneously Multiple valves can be opened at the same time. 3.4.3 Calibrating the EC and pH sensors To ensure accurate measurements, the EC and pH sensors must be calibrated regularly. To calibrate a sensor, go to the calibration menu and follow the instructions on the screen. Calibrating a sensor takes just a few steps. To complete the calibration, you will need the calibration solutions provided: EC: 1.4 and 5.0, pH: 7.0 and 4.0. Stir the sensors during the wait time so that the liquid will remain homogeneous. 27 HortiMaX-Go! 3.4.4 Setting up flow sensor If the irrigation unit is equipped with a litre counter, you will need to set the 'K-factor' (pulse/litre). The value to be set for the K-factor depends greatly on how and where the sensor has been installed. Follow the instructions provided with the sensor to install the sensor correctly and determine the K-factor. 28