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HWM Pegasus 2 User Manual

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User Guide: Pegasus 2
(Pressure control system)
Warning: This manual contains important safety and operating information.
Please read, understand, and follow the instructions in the manual.
MAN-163-0002-A
December 2020
1

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Summary of Contents for HWM Pegasus 2

  • Page 1 User Guide: Pegasus 2 (Pressure control system) Warning: This manual contains important safety and operating information. Please read, understand, and follow the instructions in the manual. MAN-163-0002-A December 2020...

  • Page 2: Table Of Contents

    PRV Function (under Pegasus 2 control) ..............25 2.9.1 Pegasus 2 Mechanical Actuator ............... 25 2.9.2 Pegasus 2 System options: (Basic and “Latching” models) ......25 2.9.3 Theory of operation (continuous pressure modulation) ......27 2.9.4 Theory of operation (Continuous pressure modulation + Latch) ....29 Configuration options (diagrams) ..................
  • Page 3 4.13 Fitting and adjusting the HWM mechanical actuator..........62 4.14 Latch Option - Prepare the PRV ................65 4.15 Latch Option - Connect Latch pipework on Pegasus 2 side ......... 66 4.16 Latch Option - Connect Latch pipework on PRV side ..........66 4.17 Latch Option - Bleed air from the pipework ............
  • Page 4 4.23 Setting Logger Startup / Measurement Sample Rates.......... 77 4.24 Setup of Data Delivery ..................... 78 4.24.1 Call-in times (schedule and protocol) ............. 78 4.24.2 Destination ......................79 4.24.3 Setting Network access parameters ............... 80 4.25 Communications / Antenna location check............81 4.26 Verification of the configuration.

  • Page 5: System Documentation And Support Of Product

    1.1 D OCUMENTATION AND ECHNICAL SUPPORT Thank-you for choosing a HWM device. We trust it will provide you with many years of service. The Pegasus 2 system is designed to control the outlet pressure from a clean-water pressure reducing valve.

  • Page 6: Overview

    Pegasus 2 is a system, provided by HWM-Water, that is designed to control the outlet pressure of a pressure reducing valve (PRV) within a clean-water supply pipe network. This section gives an overview of Pegasus 2, the equipment that is required to use it, and other (optional) system elements.
  • Page 7 A cable linking the Control Box to the Solenoid Box. • A HWM mechanical actuator. • An accessory kit for plumbing-in the Pegasus 2 system to work with the PRV. • (HWM can supply standard kits containing coloured plastic tubing, a 3-way manual valve, quick-connect fittings).
  • Page 8 The Pegasus 2 System REPLACES previous generations of HWM pressure control systems, known as Pegasus and Pegasus Plus. Pegasus 2 control box and solenoid box units are not compatible with Pegasus or Pegasus Plus units; the units cannot be used inter-changeably or mixed.
  • Page 9 An example installation accessory kit, the actuator, and brackets are shown above and opposite.

  • Page 10: Server Integration Option: Datagate And Pressview Websites

    (closed loop) modes of operation. These features are not covered further in this document; refer to the User-Guide for PressView for more details. The Pegasus 2 can also send any fault notifications (alarms) to the server for forwarding to interested parties.

  • Page 11: Communicating With Pegasus 2

    OMMUNICATING WITH EGASUS To communicate with the Pegasus 2 system a communications cable is required (part- number COMAE or COMAEUSB) to connect the Control Box to a PC. The PC also requires a HWM software utility called “Installation and Diagnostic Tool”, or more commonly known as IDT (PC version).

  • Page 12: Loading Pegasus 2 Settings Into Idt

    This copy can be edited. The unit itself is not updated with any of the program changes unless the user later saves the settings stored in IDT back to the Pegasus 2 Control unit by clicking on the ”Setup Device” button in IDT.
  • Page 13 The “Hardware Test” / “Data Collection” / ”PRV Installation” tabs shown in the above image provide access to information, settings and control functions available in Pegasus 2 and will be explained later in this manual. e.g. The “PRV Installation” tab is used during installation.

  • Page 14: Saving Settings From Idt Into Pegasus 2

    2.3.4 Saving settings from IDT into Pegasus 2 When Pegasus is shipped from the factory it is put into a “Shipping Mode” (see section 7.1.2); most functions are deactivated, including the built-in logger, but the unit will detect communications from the IDT tool.
  • Page 15 If the PRV control function of Pegasus has not yet been started, IDT will ask if you wish to start it now. Since we have not yet set these parameters but will do so later, click “No”. IDT reports that the unit has been given the new settings successfully.

  • Page 16: Pegasus 2 Control Box - Description

    – D EGASUS ONTROL ESCRIPTION Pegasus 2 control box is a combination of a PRV controller and a built-in data-logger. 2.4.1 Logger functions At the appointed time, the built-in logger will go into the state of “Recording” and begin repetitive logging.

  • Page 17: Controller Description

    An electrical interface for a flow meter. This measures the • rate of flow of water through the PRV. An electrical interface to the Pegasus 2 Solenoid Box. • A connector for attachment of an Antenna for the cellular •...
  • Page 18 “Electrical options” is a 6-character field, as follows: c c c c (character positions 1 to 6) Battery Fitment option (Additional Interface - Option 2) (Additional Interface - Option 1) PRV inlet pressure transducer type Water Flow transducer type PRV inlet pressure transducer type Pressure input (key): 3 –...

  • Page 19: Solenoid Box - Description

    The Front of the Control Box is labelled to show the position of each of the standard connectors. Non-standard connectors (for additional options fitted) are not labelled; refer to the model number and part-number guide (above). An example of a unit with internal pressure sensors and...
  • Page 20 The Solenoid Box, shown opposite, contains: A set of hose connectors for connection to water-pipes • required for the installation. An electrical interface to the Pegasus 2 Solenoid Box. • (Optional) additional interfaces for Hydroswitch units.; • (0 up to a maximum of 2).
  • Page 21 Battery Fitment options (key): F – Fitted internally and also connected (standard). D – Fitted internally but disconnected. S – Shipped separately. E – Empty. (Fixings for internal battery are supplied, but no battery). N – (Nothing supplied: No internal battery. No fixings). Hydroswitch interfaces (key): 0 –...

  • Page 22: Hydroswitch - Description

    ECHANICAL CTUATOR In order to control the outlet pressure of a PRV the Pegasus 2 system is required to modify the PRV behaviour so that it produces downstream water pressure which follows the programmed pressure profile closely. This is achieved with the help of the HWM Mechanical Actuator, shown opposite.

  • Page 23: Summary Of Prv Function (Pilot Operated)

    2.8 S PRV F UMMARY OF UNCTION ILOT OPERATED (Readers familiar with PRVs controlled by pilot valve operation may skip to section 2.9). 2.8.1 Main valve The main components of a Pressure Reducing Valve (PRV) are shown opposite. A plunger within the valve body is able to close Main valve Inlet chamber...

  • Page 24: Pilot Operated Pressure Reducing Valve

    2.8.3 Pilot operated pressure reducing valve A pilot operated pressure reducing valve automatically and accurately reduces downstream water pressure to a specific, adjustable value. Pressure adjustment bolt Pilot Valve Water Filter The Pressure Reducing Pilot [1] senses downstream pressure [2] and in real time modulates the top chamber of main valve [3] to maintain a constant downstream pressure.

  • Page 25: Prv Function (Under Pegasus 2 Control)

    Pegasus 2 is able to control the spring force by adding or removing water from the upper chamber of the actuator. This operates a rod internal to the device (the stem of the plunger) which connects to the seat of the spring.
  • Page 26 The differences in the two types of Solenoid box (latching vs non-latching) is illustrated in the diagrams below: Non-latching versions: Latching versions: Latch Input Latch Output Actuator Actuator Vent Vent Inlet Inlet S1 and S2 are 2-port valves which are normally sealed. An electronic pulse to one of the valves momentarily actuates it and allows a small quantity of water to flow through it.

  • Page 27: Theory Of Operation (Continuous Pressure Modulation)

    The controller can pulse solenoid valve S2 to slightly deflate the upper chamber of the HWM mechanical actuator. This decreases the outlet pressure. A small amount of water is discharged to the vent port, where it should be piped away from Pegasus to drain at a...
  • Page 28 (greater than 90m). In this situation, it is often possible to use Pegasus 2 safely by plumbing the Solenoid box unit into the PRV outlet to obtain water at a lower pressure, as shown below:...

  • Page 29: Theory Of Operation (Continuous Pressure Modulation + Latch)

    2.9.4 Theory of operation (Continuous pressure modulation + Latch) Continuous pressure modulation can be similarly implemented using a latched model version when plumbed into the PRV as shown below, provided the relay S3 is not operated. The connection between the pilot valve and the upper chamber of the PRV simply passes through the Latch solenoid, rather than being directly connected.
  • Page 30 Water from the upper chamber of the PRV is discharged through the port labelled “Latch out” to the Pegasus 2 port labelled “Vent” (and subsequently to a drain). The upper chamber of the PRV empties, allowing the PRV to open fully, so that the water flows through the PRV at maximum flow rate;...
  • Page 31 This is used to implement a function of “Latch on low unreachable” using a modified Pegasus 2. Note: Use of a Pegasus 2 modified and installed in this manner is very rare; it shuts off the supply of water. it requires specialised knowledge not covered in this manual.
  • Page 32 The upper chamber of the PRV is inflated by water flowing into the Pegasus 2 port labelled “Vent” (which is re-purposed as the inlet port). This causes the PRV to fully close so that the water flows through it at its minimum flow rate (and therefore maximum pressure loss).

  • Page 33: Configuration Options (Diagrams)

    ONFIGURATION OPTIONS DIAGRAMS The following sections illustrate some of the possible installation configurations that are achievable using the basic Pegasus 2 system. 3.1 K EY TO COMPONENTS WITHIN THE DIAGRAMS To assist understanding of the diagrams, details of the various other components surrounding the PRV are shown below.
  • Page 34 Outlet pipe from the PRV Flow meter The diagrams shows a flow meter (fitted within pipework of the outlet side). The Pegasus 2 system provides models that can interface with various types of flow meters (e.g. Pulse or analogue). Pressure Reducing valve The upper chamber is shown with 2 ports;...
  • Page 35 Pegasus 2 Solenoid box The Pegasus 2 solenoid box is shown opposite. The Inlet and Actuator connections are always plumbed into the system. The vent port connection to a drain is omitted from certain drawings in this manual for simplicity.

  • Page 36: Standard Installations: Continuous Pressure Control

    3.2 S TANDARD INSTALLATIONS ONTINUOUS PRESSURE CONTROL 3.2.1 Using: internal transducers (Pressure in < 90m)

  • Page 37: Using: External Transducers (Pressure In < 90M)

    3.2.2 Using: external transducers (Pressure in < 90m)

  • Page 38: Using: Internal Transducers (Pressure In > 90M)

    3.2.3 Using: internal transducers (Pressure in > 90m)

  • Page 39: Using External Transducers (Pressure In > 90M)

    3.2.4 Using external transducers (Pressure in > 90m)

  • Page 40: Standard Installation + High Pressure Unreachable

    3.3 S TANDARD NSTALLATION RESSURE NREACHABLE 3.3.1 Using: Latch solenoid / internal transducers (Pressure in < 90m))

  • Page 41: Using: Latch Solenoid / External Transducers (Pressure In > 90M)

    3.3.2 Using: Latch solenoid / external transducers (Pressure in > 90m)

  • Page 42: Using: Latch Solenoid / Internal Transducers (Pressure In < 90M)

    3.3.3 Using: Latch solenoid / internal transducers (Pressure in < 90m)

  • Page 43: Using: Latch Solenoid /External Transducers (Pressure In > 90M)

    3.3.4 Using: Latch solenoid /external transducers (Pressure in > 90m)

  • Page 44: Other Installation Options)

    Latch on Low pressure unreachable configuration shuts off water if pressure drops). It requires specialised knowledge of how to change the Pegasus 2 functionality for this type of installation. It also re-purposes the water connectors to be used for a different plumbing scheme.

  • Page 45: Installation Procedure

    The installer will be required to become familiar with the use of IDT as it is used at various parts of the installation process. (e.g. It is required in order to bleed air out of the system, test Pegasus 2 operation, and program a pressure profile). Summary of system selection and Installation: The system can be fitted to an operating PRV, however some flow pressure variation will be experience whilst testing the system.

  • Page 46: Position Control And Solenoid Boxes / Link With Cable

    ONTROL AND OLENOID BOXES INK WITH CABLE The Pegasus 2 Control Box and Solenoid Box can be secured to a wall using optional brackets, shown opposite. Ensure the wall and fixings used are able to bear the weight of the Pegasus 2 and any cables.

  • Page 47: Connection To The Flow Meter

    ONNECTION TO THE LOW METER Connection to the flow meter is required for any Pegasus 2 that uses a pressure profile that is dependent on flow (i.e. flow or combined time and flow). For other situations it is optional, and will be used only by the data-logger functions.

  • Page 48: Check / Modify Pegasus 2 Channel Settings

    EGASUS CHANNEL SETTINGS In order for Pegasus 2 to operate correctly, the input channels must be set up, along with any calibration data and also various other settings. Select the Setup tab in IDT. Scroll to the “Logging Channels” panel.
  • Page 49 Setup of the pressure transducer for “PRV inlet pressure”. Note: The PRV inlet pressure is required by Pegasus 2 (and also PressView) to be mapped to “channel 1”. Clicking the cog button for channel “1” gives details of the source of measurements that will be used for the “channel 1”...
  • Page 50 0.1 to convert it to metres (m, the selected recording unit). “Input multiplier” is therefore set “0.1”. The “Logging Mode” should be set at “average” for Pegasus 2; this will smooth-out any noise (short fluctuations) in the readings and give a representative value of pressure.
  • Page 51 It should be modified if required. The Flow input for Pegasus 2 PRV control is required to be a volt-free pulse input. This could be one of the following: Flow Bi (for a Bidirectional Flow meter), as in this example or •...
  • Page 52 If 1 pulse represents 10 litres, “Units per pulse” should be set to “10”. “Logging Mode” should be set at “average” for Pegasus 2; this will smooth-out any noise (short fluctuations) in the readings and give a representative value of flow.
  • Page 53 External Pressure Transducers – Entering Calibration coefficients External pressure transducers from HWM have calibration coefficients that must be entered into IDT in order for Pegasus 2 to use them correctly. Enter the values, as per the example opposite. Note: The final number represents the maximum pressure range of the transducer (in bar).

  • Page 54: Re-Zero Pressure Transducers

    4.5 R ZERO RESSURE TRANSDUCERS Ensure any external pressure transducers are connected to the Pegasus 2 at this stage. Be sure to connect the inlet pressure transducer to the connector labelled “PRV • Inlet pressure”. Be sure to connect the outlet pressure transducer to the connector labelled “PRV •...
  • Page 55 This starts the re-zeroing process of the Pegasus 2, which repeatedly reads the numeric output from the transducer. …Wait for this to stabilise (e.g. wait for 10 readings) and then click the “Save” button. The value is stored. Repeat the process for the second pressure transducer. This is identical but requires selection of the “PRV Outlet pressure”...

  • Page 56: Prepare The Pipework For The Pegasus 2

    REPARE THE PIPEWORK FOR THE EGASUS Accessory kits which include coloured hoses are available from HWM (ACT00* series accessory kits); Coloured hoses makes identification easier. A manual 3-way valve and quick-connect fittings are also available. Some of the items are shown below.

  • Page 57: Prepare The Prv For Pegasus Pressure Transducers

    PRV, as Close those required for transducers and required, to allow connection to water feed to “Inlet” of Pegasus inlet. Pegasus 2 at a later stage. Do not fit any pressure transducers or hoses to the PRV at this stage.

  • Page 58: Connect Pegasus2 Side Pipework

    4.8 C ONNECT EGASUS SIDE PIPEWORK Pipes can be connected directly to the Pegasus2 Solenoid Box ports by pushing the end of the pipe into the port. The pipes will be sealed and retained by the connector (until they are manually released, which requires pushing on the connector’s ring whilst pulling the pipe away from the connector).

  • Page 59: Connect Transducers And Basic Control Pipework On Prv Side

    4.9 C ONNECT TRANSDUCERS AND BASIC CONTROL PIPEWORK ON SIDE Before proceeding, confirm that the pressure transducers are of a suitable pressure range, that the channels have been set up, and the transducers have been re-zeroed at atmospheric pressure. Connect any external pressure transducers to the appropriate location on the PRV valve, ensuring that: The upstream side is connected to the “PRV Inlet Pressure”...

  • Page 60: Test Pressure Transducers

    Where internal transducers are fitted, detach and then re-attach the pipes using the quick-release connectors at the Pegasus 2 side (several times). This will allow air to escape from the pipes via the quick-release connector and be replaced by water.

  • Page 61: Preparing To Fit The Actuator

    4.12 P REPARING TO FIT THE ACTUATOR Note: The following instructions assume that the valve is neither vented to the maximum (fully open), nor used to cut the water supply (fully closed) but is under the control of the fitted pilot valve. It also assumes that the PRV is fitted with service stop-taps at the relevant...

  • Page 62: Fitting And Adjusting The Hwm Mechanical Actuator

    ITTING AND ADJUSTING THE MECHANICAL ACTUATOR Ensure that the thread of the HWM mechanical actuator being used is the same type of thread as the existing adjustment bolt on the PRV pilot valve. (HWM can supply alternative threads if the actuator is unsuitable).
  • Page 63 Note: Use the Pegasus transducers and IDT to help set the actuator pressure settings (or a pressure gauge). (See section 4.11). Screw the HWM mechanical actuator into the pilot of the PRV. It should be positioned at approximately the same depth as the pilot bolt, which has just been removed.
  • Page 64 Insert the green pipe (which connects the 3-way manual valve) into the top of the actuator head (as shown). Move the valve to open the path between the pipe from Pegasus 2 port labelled “Actuator” through to the upper chamber of the actuator.

  • Page 65: Latch Option - Prepare The Prv

    4.14 L ATCH PTION REPARE THE (When installing Pegasus models that do not include a latch … skip to section 4.19). Lock the PRV top chamber by closing the valve to the top chamber, if possible. Close PRV top chamber valve Shut both the input and output path of the pilot valve together (at...

  • Page 66: Latch Option - Connect Latch Pipework On Pegasus 2 Side

    4.16 L ATCH PTION ONNECT ATCH PIPEWORK ON SIDE Fit the Pegasus 2 latch pipework to the PRV and pilot valve connections; Refer to the relevant installation diagram for guidance. 4.17 L ATCH PTION LEED AIR FROM THE PIPEWORK Ensure the Latch state is “closed” (refer to section 4.18).

  • Page 67: Latch Option - Testing

    4.18 L ATCH OPTION ESTING Where fitted, the latch option can be tested (activated and deactivated) to switch the upper chamber of the PRV between being under control of the pilot valve, or being under control of the latched condition (emptying, in the case of a “Latch on high unreachable”...

  • Page 68: Prv Control Method And Settings

    The pressure can be verified using an external pressure meter or by using the Pegasus 2 transducers with IDT. To use the Pegasus 2 transducers, click the “Live Values” button. The display will update to show pressure and flow values. (Other buttons are disabled whilst this is operating;...
  • Page 69 The adjustment of the Deadband continues until a level is found which results in an acceptable daily energy use. However, it does not do this without limitation; a maximum limit can be set in the “Auto limit” field. Where the field is left blank, Pegasus 2 defaults to a value of 8m.

  • Page 70: Setup Of Pressure Control Using A Time Profile

    4.20.1 Setup of pressure control using a Time profile To use a pressure profile that is based on time, tick the “Time control” option. (With the “Flow Control” box un-ticked, flow does not participate in control decisions, but is still logged). …...
  • Page 71 Lines can be added to IDT in any order. After the program has been saved to the device and read back, the profile can be checked; the lines will be re-sequenced according to time of change. Confirm the settings match your expectations. A more specific setting made in the Day selection will over-ride a more general setting.

  • Page 72: Setup Of Pressure Control Using A Flow Profile

    4.20.2 Setup of pressure control using a Flow profile To use a pressure profile that is based on Flow, tick the “Flow control” option. … A “Flow Control Settings” panel will appear with additional options to set. The “Flow Control Offset” should usually be set to “not enabled”.
  • Page 73 Enter the profile as Flow rate (in litres/second) vs the required PRV outlet pressure. The Flow Control pressure profile can be built as a table of Flow-rate (in litres per second) and pressures (in metres). The pressure profile is executed with linear interpolation between the pressures entered into the profile.

  • Page 74: Setup Of Pressure Control Using A Combined Time And Flow Profile

    It is also possible for an installer to define their own limits for detecting a possible flow problems. It is possible for the installer to place upper and lower flow-rate boundaries on the expected PRV water flow. When outside of these limits, Pegasus will use the Default pressure setting as its target pressure.

  • Page 75: Setup For Annual Time Adjustments

    4.21 S ETUP FOR ANNUAL TIME ADJUSTMENTS Some countries have a scheme for adjusting the local time annually to make the most of available sunlight hours and for safety reasons. (e.g. British Summer Time, Daylight saving). Since water usage patterns follow people’s behaviour to some extent, it is possible for Pegasus to be programmed to adjust its local clock to match the scheme and therefore...
  • Page 76 Note: The user can also now pause control and (later) restart it without making any program changes. This can be done by using the buttons within the PRV Installation tab… Click on the “No Control” button if you wish to pause automatic PRV control.

  • Page 77: Setting Logger Startup / Measurement Sample Rates

    The “Logging Parameters” panel shows timing parameters for the logger functions within the Pegasus 2 control unit. For Pegasus 2, the built-in logger should be set for the measurement interfaces to be logged frequently. Therefore, set to “Log data at specified time interval”.

  • Page 78: Setup Of Data Delivery

    4.24 S ETUP OF ELIVERY Pegasus can be setup to call into the HWM DataGate server (over the mobile phone network) at specific times. During a call-in it will send measurement data or receive “remote programming commands”. The installer should setup Pegasus with the required schedule.

  • Page 79: Destination

    The remaining options in the “Data Destination” panel are related to potential power saving: The setting for “Logger is Battery Powered” does not matter for Pegasus 2; It automatically detects if an external battery is connected during its operation. Data compression can be set to minimise length of messages and hence call times.

  • Page 80: Setting Network Access Parameters

    4.24.3 Setting Network access parameters The unit needs to know how to connect to the internet using the mobile-phone data network. These details are set in the “APN settings”. Either select the option to “Use GPRS test to choose APN settings” to allow automatic set- up …...

  • Page 81: Communications / Antenna Location Check

    4.25 C OMMUNICATIONS NTENNA LOCATION CHECK Communications over the cellular network can be confirmed by making a test call. Click on the “Call Test” button, located at the bottom of the IDT program window. The call test will proceed. Confirm that a “Call connection test successfully complete” information box appears. Note the parameter “CSQ”;...
  • Page 82 The modem is the cellular communications module built into Pegasus 2. A new window will open with various types of modem tests. Click on the “CSQ” button. This measures the received signal strength, and a new measurement is made every few seconds.

  • Page 83: Verification Of The Configuration

    These can be supplied upon request at additional cost or sourced locally from a hardware store. To protect the pressure transducers from frost, Pegasus 2 has the option of being supplied with external transducers, rather than internal transducers. This removes the possibility of the column of water within the pressure hoses connecting to the internal transducers of the controller from freezing and potentially becoming damaged.

  • Page 84: Graphing / Data Download And Preview

    RAPHING DATA DOWNLOAD AND PREVIEW Measurements are saved by the Logger functionality built-into Pegasus. Measurements are normally incrementally uploaded to the DataGate server so that they can be: Viewed remotely. • Optionally, be used by the PressView system to fine-tune the performance of the •...
  • Page 85 A graph will be displayed of the channels being logged. To zoom to specific times/dates, click and drag over the part of the screen required. Click the ”Zoom Full” button to show all data once more. A larger display can be shown by clicking the button shown opposite.

  • Page 86: Connection Information

    6.1.1 FLOW Meter connection / cable RAG 93 Flow meter pulse unit cable (RAG R93). (Flow meter side: Volt-free) Open Collector (Pegasus 2 side) LINK Contact Closure Connect the cable to the flow meter’s volt-free pulse interface: Use the green wire as ground.

  • Page 87: Maintenance, Service And Repair

    When returning product for investigation or repair, be sure to follow the instructions of your distributor to document why the product is being returned. If returning to HWM, this can be done by completing the on-line RMA form: https://www.hwmglobal.com/hwm-rma/ Refer to the Safety Warnings and Approvals Information for guidelines of the packing requirements.

  • Page 88: Putting The Equipment Into Shipping Mode

    7.1.2 Putting the equipment into Shipping Mode Before long term storage, moving an installed unit, or shipping for repair, the Pegasus 2 unit should be put into “Shipping mode”. Be sure to upload any unsent data before this operation. To put the Pegasus 2 into shipping mode: Read the current configuration of the Pegasus using IDT.

  • Page 89: Water Ingress

    The unit will be re-programmed. • IDT will warn that the logger device has been stopped. Click “OK” and confirm that the • status of “(Stopped)” is shown at the top of the IDT Logger panel. Note: The unit may now be re-packed for shipping or long-term storage.
  • Page 90 All images, text and designs are protected by international and UK copywrite law and remain the property of HWM-Water. It is against the law to copy or use any of the content from the HWM website or literature without the written consent of HWM-Water.

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