Related Manuals for Pumps (UK) PUK AutoPress LEV
Summary of Contents for Pumps (UK) PUK AutoPress LEV
- Page 1 PUK AutoPress LEV & HEV Compact Pressurisation Units Installation, Commissioning and Servicing Instructions www.pumpsukproducts.com | 01322 292415 | boosters@pumpsukltd.co.uk Pumps UK Ltd, Units 2 and 3, M2M Park, Maidstone Road, Rochester, ME1 3DQ...
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Page 2: General Requirements
Note: THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT. THE ELECTRONIC PRESSURISATION UNITS ARE INTENDED FOR USE ONLY IN COMMERCIAL/LIGHT INDUSTRIAL APPLICATIONS. THIS PRESSURISATION UNIT COMPLIES WITH THE ESSENTIAL REQUIREMENTS OF THE MACHINERY DIRECTIVE 2006/42/EC, THE LOW VOLTAGE DIRECTIVE 2014/35/EC AND THE ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 2004/108/EC. -
Page 3: Product Description
Mains Water Connections All connections to local water mains must comply with applicable regulations including any local requirements. The System temporary fill connection must be as per water supply bylaws and must be removed after initial filling. Expansion Vessels System expansion vessels must comply with relevant standards. Pumps UK have a range of products available on request including guidance of vessel sizing. -
Page 4: Installation
Figure 2 – Electronic Single and Twin Pump Pressurisation Unit – Technical Data General Low Pressure (LEV) High Pressure (HEV) Minimum cold fill pressure Maximum cold fill pressure Maximum operating pressure Maximum Flow Rate l/min Maximum water flow rate @ Maximum cold fill pressure l/min Weight (empty) - Page 5 Location Figure 4 - Recommended Clearance Dimensions The unit is designed for wall mounting. A mounting bracket is supplied inside the unit, taped to the front of the tank. It is intended that this bracket should be fixed to the wall and the unit hung from it. The corresponding holes in the wall should be drilled to suit once the unit is mounted on its bracket;...
- Page 6 Pipework Connections Mains water connection - ½” Male BSP The units have a type ‘AF’ air gap to prevent backflow in accordance with Water Supply (Water Fittings) Regulations 1999. The water supply connection must conform to all local WRAS regulations. Overflow Connection - 22mm Compression Fitting Overflow should be piped to where it will be safe but visible so it will be noticed and corrected.
- Page 7 OPERATION OF THE PRESSURISATION UNIT Figure 6 – Schematic Layout Unit Operation A drop in system pressure due to, for example, loss of water, will cause the pump[s] to maintain the pressure. As the level of water in the tank reduces a ball valve allows new water into the tank. When the pressure sensor indicates that the correct pressure has been reached the pump stops.
- Page 8 Electrical Installation Before working on the Pressurisation unit ensure all electrical circuits connected to it are isolated. System Expansion Vessel To set or check the expansion vessel charge pressure the lock-shield between the Pressurisation unit and the vessel must be closed. The charge pressure must be checked with the expansion vessel empty.
- Page 9 Figure 7 – Priming Screw on Pump (Hex head bolt located beside the outlet port.) Check for any leaks within the units, if OK open system isolation valve and the PU will fill the system until it reaches the set cold fill pressure. The Pressurisation can be used to top up the system, but it is not designed to fill the system from empty.
- Page 10 Can only be moved up to 0.2 bar below COLDFILLPRES setting. If moved down L PRESS ALARM will move when only 0.2 bar lower. L PRESS ALARM Low Pressure Alarm Setting. 0.0 - 5.6 bar Can only be moved up to 0.2 bar below CUT IN PRES setting.
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Page 11: Error Codes
ERROR CODES In the event of the Pressurisation unit going into fault mode, the display will flash the following error messages. If there is more than one fault the unit will flash between the fault codes every 3 seconds. ALARM-LO PRESS - The Electronics are showing that the system pressure has fallen to the low alarm setting and the Low Alarm Relay will have been activated. - Page 12 12 Monthly Check the ball float valve diaphragm for integrity and replace if necessary. Also check the plastic float for soundness. Check the expansion vessel for signs of external corrosion. If any deterioration is observed, then it is recommended that the frequency of inspection be increased. Check the operation of the safety circuits if utilised on the Unit.
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