Related Manuals for FLOWTECH flowpress WMDA
Summary of Contents for FLOWTECH flowpress WMDA
- Page 1 WMDA Single & Twin Pump Pressurisation Units OPERATION AND MAINTENANCE MANUAL First Publication Date: 01/09/2020 Revision: Revision Date:...
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Page 2: Table Of Contents
Contents General Information Safety Information Equipment Overview Principal of Operation Installation Pipe Connections Typical Installation Diagram Flow Restrictors (ECO & WMDA Models Only) WMDA Clearance and Connection Requirements Electrical Power Supply Micro Controller Fault contacts Commissioning Pre-Commissioning Checklist Controller Overview Controller Programming Program List Hydraulic Commissioning... -
Page 3: General Information
General Information These instructions are to assist in the installation of the flowpress WMDA Pressurisation Units please follow them carefully. If, having read this Operation & Maintenance Manual, there is any doubt about any aspect of the installation please don't hesitate to contact our technical team. - Page 4 Water Solutions. This document is intended for ALL installers, operators, users and persons carrying out maintenance of this equipment and must be kept with the equipment, for the life of the equipment and made available to all persons at all times.
- Page 5 SAFETY WARNINGS & PRECAUTIONS These instructions should be read and clearly understood before working on the system. Please read this manual carefully and all of the warning signs attached before installing or operating the equipment keep this manual handy for your reference. This equipment should be installed, adjusted and serviced by trained and qualified personnel.
- Page 6 exclamat CAUTION! - It is strongly recommended that all electrical equipment conforms to National Electrical Codes and local regulations. Only qualified personnel should perform installation, alignment and maintenance. The manufacturer reserves the right to alter the technical data in order to make improvements or update information. exclamat CAUTION! - Failure to observe these rules will render the guarantee invalid.
- Page 7 Remember – When installing a expansion vessel with the pressurisation unit make sure the cold pressure is the same in order for the system to work effectively. Flowpress WMDA 1-1 and Flowpress WMDA 1-2 - Under no circumstances must be used to fill a system of any size.
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Page 8: Equipment Overview
Equipment Overview The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and cooling systems. The equipment is designed to provide periodic water top-up to compensate for minor losses in system pressure (e.g. slow leaks, air venting, etc.). This equipment is not designed to cope with sudden losses of system pressure (e.g. -
Page 9: Installation
Installation This pressurisation unit is not designed to be installed in an outdoor environment. The unit must be installed in a frost free environment, away from precipitation and water sprays/jets. If there is a risk of flooding, the unit must be installed on a raised plinth. Please refer to the appropriate datasheet for the maximum working pressure and temperature of the pressurisation unit. - Page 10 Mains Water Requirement Pressure Below 1 Bar No Restrictor. Install Filter Only 1 – 4 Bar Low Pressure Restrictor (coloured) Above 4 Bar High Pressure Restrictor (white) If no restrictor is required, the filter must be removed from one of the restrictors and installed on its own. The following diagram shows how to remove the filter: To install the flow restrictor/filter, hold it by the tab and push it into the opening of the float valve connection, as shown in the diagram below:...
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Page 11: Wmda Clearance And Connection Requirements
WMDA Clearance and Connection Requirements Connection Size Notes Mains ½” BSP M An isolation valve must be installed on the Water Feed mains water feed for servicing. Break Tank 22mm Guidance on drainage requirements should Overflow be obtained from the local water authority. System ½”... -
Page 12: Electrical Power Supply
Electrical Power Supply This equipment must be electrically isolated before removing the covers. Cables connected to the volt free contacts may be supplied from another source and may remain live after the unit is isolated. These must be isolated elsewhere. All electrical connections must be carried out by a suitably qualified and competent person. -
Page 13: Micro Controller
Micro Controller Fault contacts There are 6 volt free fault contacts which can be used for connection to a BMS system, or as a boiler interlock. These are terminals 1-12, located on the digital controller: With the exception of the Common Alarm, it is possible to convert all other fault contacts to normally closed. For further information please refer to the commissioning section of this manual. -
Page 14: Commissioning
Commissioning It is highly recommended to have this equipment commissioned by a Flowtech approved engineer. Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not be covered by the warranty. Pre-Commissioning Checklist The following conditions must be met before starting the commissioning process. Failure to meet these conditions may result in injury or damage to the equipment, system and property. -
Page 15: Controller Overview
Controller Overview The following image shows the front of the pressurisation unit digital controller. 4 buttons are provided for programming, and an LED display which shows scrolling messages. When the controller is first powered up, it will display the controller version number. This manual relates to controller version >8.0. -
Page 16: Controller Programming
Controller Programming Do not alter any settings without first understanding the implications of doing so. Incorrect settings may cause damage to the equipment, system or property. To enter the programming menu, hold the (+) button until “enter code” appears on the screen, followed by “0000”... -
Page 17: Program List
Program List The table below gives details of all menu items, in the order that they will appear: Default Menu Item Function Value The required fill pressure, i.e. pump ‘cut-out’ pressure. The recommended setting is 0.3 BAR above the static pressure of the system (0.1 Bar per meter of static height). - Page 18 The cumulative number of power interruptions (i.e. controller turned off/power cut). POWER This is a cumulative counter, the value of which cannot be modified. If using the INTERRUPTED engineer’s code, the counter can be reset to zero by holding the (MUTE) button. When enabled, if a pump has been inactive for 60 days, it will start and run for PULSE 2 seconds.
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Page 19: Hydraulic Commissioning
ID NUMBER A user configurable identification number. This option does not serve any functional purpose. RELAY When enabled, all normally open fault contacts (i.e. all except the common alarm) INVERSION are converted to normally closed. OVERRUN Allows the pump to continue running for a set period of time after the required pressure has been reached. - Page 20 Un-screw cap turn cap push cap on socket Twist cap Attach a length of hose to the hose tail on the drain valve and put the other end to drain. Then, using the cap off the isolation valve, open the drain valve: Locate the bleed screw on the pump.
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Page 21: Forcing Pumps To Run
Forcing Pumps to Run Turn on the power supply to the digital controller and wait for the system pressure to appear on the display. Then, enter the code 2601 and go to the first setting in the menu, cold fill. While at this point in the menu, holding down the (MUTE) button will force pump 1 to run, and holding down the (SET) button will force pump 2 to run. -
Page 22: Testing
Turn on the power supply to the pressurisation unit. Depending on the current system pressure, the unit will respond in one of the following ways: If the system pressure is below the low pressure alarm setting, the controller will display a “LOW PRESSURE” fault and the pumps will not run. -
Page 23: Fault Codes
Fault Codes The following table gives the meanings of all fault codes used on the digital controller: Fault Code Description Auto/Manual Reset LOW PRESSURE The system pressure is below the [LOW PRESSURE] set point. User Defined HIGH PRESSURE The system pressure is above the [HIGH PRESSURE] set point. User Defined LOW H20 The break-tank low level float switch has been activated... -
Page 24: Visual Inspection
Visual Inspection A basic visual inspection will highlight the majority of potential faults on a pressurisation unit. It is recommended to perform a visual inspection annually. However, due to the simplicity of performing these checks, frequent inspections are encouraged. • Check the digital display for fault codes • Check for signs of leakage (e.g. -
Page 25: Check Expansion Vessel Pre-Charge
Check Expansion Vessel Pre-Charge Many of the problems experienced with pressurisation equipment can be traced back to the expansion vessel. The expansion vessel pre-charge pressure must be checked after 2 years and annually thereafter. To perform this test, the expansion vessel must first be drained of water, then a gauge can be connected to the Schrader valve on the vessel to measure the pre-charge pressure. -
Page 26: Wiring Diagram
Wiring diagram... -
Page 27: Wiring Location List
Wiring location list Wiring diagram – 3 Phase flowpress WMDA Pressurisation Units... - Page 28 Wiring location list - 3 Phase...
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Page 29: Spare Parts
Spare Parts The drawings on the following pages show the internal components for a range of pressurisation equipment. Due to continuing development and minor design changes, some components may be changed without notice. Therefore, the drawings may not accurately reflect the current production design. - Page 30 WMDA Models *Image for indication only Description Model 1-1 & 1-2 (PQA60) Model 2-3 & 2-4 (PQ81B) ½” Non-Return Valve Braided Hose Pressure Transducer (0-10 Bar, 1-6V) Mini Float Valve Combined Isolation & Drain Valve Overflow Connection Mesh Strainer Float Switch...
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Page 31: Troubleshooting
The pump is air-locked Bleed the pump The unit is undersized for the system Review unit selection The FLOOD LIMIT time is too short. Consult Flowtech P1 and/or P2 FAIL is The PUMP TYPE option is set incorrectly. Review PUMP TYPE setting displayed... - Page 32 Pump runs but does not The pump is air-locked and not pumping Bleed the pump make up pressure water The pump is persistently The wrong/no flow restrictor is installed Check float valve flow restrictor becoming air-locked in the float valve (WMDA units selection (WMDA units only) only) The break tank...
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Page 33: Warranty Details
If our own engineer is to commission the unit please have the leaflet on site for completion by the engineer. Liability Flowtech Water Solutions Limited can only respond to warranty queries from its direct customer. If in doubt, please contact your installer to establish the supply chain. - Page 34 Service 1 Date__________ Service 2 Date_________ ____ Engineer’s Name _________________ _ ___ Engineer’s Name _______________ ______ Company Name__________________ Company Name________________ ______ Tel No_______________________ _______ Tel No________________________ ______ Comments______________________ ____ Comments____________________ ______ Signature ________________________ _____ Signature _______________________ ____________ Service 3 Date_________ ____ Service 4 Date________...
- Page 35 Unit 1 Lock Flight Buildings, Wheatlea Industrial Estate, Wigan, Greater Manchester WN3 6XP United Kingdom 9001 : 2015 REGISTERED Membership No. 700106 Certificate No. 185352020 Copyright © 2020 • All Rights Reserved • Flowtech Water Solutions Limited • Company Number: 05125479 • VAT Number: 836 8024 19...