Pumping Technology OMEGA GLANDED PUMPS INSTALLATION AND OPERATION MANUAL

Transcription

1 OMEGA GLANDED PUMPS INSTALLATION AND OPERATION MANUAL IMPORTANT INFORMATION These instructions must be read and understood before installing, commissioning, operating or maintaining the equipment.

2 This installation guide gives basic instructions which are to be observed during installation, operation and maintenance of the pump. It is therefore imperative that this document be read by the responsible person/operator prior to the installation and always be kept available at the site. It is not only the general safety instructions under the main heading Safety that are to be observed, but also the specific information provided under the other main headings. SAFETY DANGER Warns of the risk of electric shock, if the precautions are not observed. DANGER Warns of the risk of damage to persons, property or the unit, if the precautions are not observed. CONSTRUCTION AND APPLICATION PUMP MEDIUM Smedegaard Omega pumps are of the in-line type construction with the motor mounted directly to the pump body. The pumps are suitable for commercial and industrial heating systems, district heating schemes, water treatment plants, general water transfer duties and refrigeration plants. Clean, thin, non-aggressive and non-explosive fluids (similar viscosity and specific gravity to water) without any solids or fibres. Antifreeze without any mineral oil (special model upon request). TECHNICAL DATA Note: If any liquid other than water is being pumped, we recommend that you contact Smedegaard, or their representative, as the pump characteristics may change. Electrical data Max. working pressure NPSH requirements Temperature see nameplate 10 bar see pump performance in Omega range leaflet -15 o C to +120 o C AIRBORNE SOUND PRESSURE LEVEL 950 rpm max. 65 db(a) 1450 rpm 0.12 kw to 1.5 kw - max. 47 db(a), 3 kw to 7.5 kw - max. 60 db(a), 11 kw to 45 kw - max. 69 db(a) 2900 rpm 0.12 kw to 3 kw - max. 53 db(a), 4 kw to 11 kw - max 62 db(a), 15 kw to 45 kw - max. 78 db(a) 2

3 INSTALLATION Fig. 1 Where provided, the threaded tappings in the base of the pump are for the attachment of a foot plate for floor mounting and are not designed for the purpose of wall mounting. Where the pump is to be mounted with the head in a horizontal position, the weight of the pump must be taken into consideration so as to avoid the risk of the failure of the fixings and the consequential danger of damage or injury. The pump can be installed with the pump shaft vertical or horizontal (see Fig.1). Direction of flow through the pump casing is indicated by an arrow. Ensure pipework alignment is correct and the pump and pipework is adequately supported. Sharp bends should be avoided adjacent to the pump. If pump is mounted in vertical pipework, flow should be upwards. If flow is downwards (not recommended) it must be ensured that no air is able to collect in the pump body. Pumps should never be allowed to operate for a long period in a closed valve condition. To avoid accumulation of impurities in the pump, ensure that it is not mounted at the lowest point in a system. It is recommended that isolating valves are fitted on either side of the pump. The system should always be thoroughly flushed out to clear any solder, steel wool, plaster or any other foreign matter that may be lodged in the pump. To avoid this risk of the accumulation of air within the pump body the pump should not be situated at the highest point of the system. This may be critical in the case of HWS (bronze) pumps. Twin headed pumps fitted into horizontal pipework and with horizontal motor shaft, then fit an automatic air vent into the top casing. If the head is mounted in the horizontal position then rotate the head to ensure the air vent is at the top. See Fig 2. Filler Pipe Open Open Closed Fig. 2 Closed 3

4 Air Venting Closed Circuits Open valves on suction and discharge, allowing water to enter the pump casing. Open the air vent screw on the pump seal chamber (see Fig. 2) and allow all the air to escape. Close the air vent screw. Open Circuits - Flooded suction Proceed as for closed circuits above but with discharge valve closed. Open Circuits - Suction lift, with foot valve (see Fig. 3). Break the pipework at a suitable place on the discharge side of the pump. Open suction and discharge valves and fill pump and pipework to level of break. Open the air vent screw on the pump seal chamber (see Fig. 2) and allow all the air to escape from this area. Close the air vent screw. The water level in the pipe should remain constant, proving that the foot valve is holding. Reconnect the pipework. It is very important that the pump is fully vented otherwise the mechanical seal can be damaged. ELECTRICAL CONNECTION AND DIRECTION OF ROTATION Motors should always be connected, through a suitable starter, to the mains supply. Ensure that the electrical supply available agrees with the motor details shown on the nameplate. Connection details are shown inside the terminal box cover. Refer to the motor data plate to check for star/delta connection. If the pump is supplied with an inverter fitted, then refer to the inverter operating and maintenance instructions. The direction of rotation is shown with an arrow on the motor cowl and should always be checked after wiring. ALL OMEGA RANGE UNITS UP TO OMEGA SHOULD ROTATE IN AN ANTI- CLOCKWISE DIRECTION WHEN VIEWED FROM THE MOTOR NON-DRIVE END. ALL OMEGA RANGE UNITS OMEGA 12 AND ABOVE SHOULD ROTATE IN A CLOCKWISE DIRECTION WHEN VIEWED FROM THE MOTOR NON-DRIVE END. The direction of rotation of three phase motors can be altered by interchanging any two of the three main connecting leads. Single phase motors have the direction of rotation pre-set before despatch. STARTING THE PUMP MUST NOT RUN WITHOUT WATER. Open suction valve and close discharge valve. Start the pump and slowly open the discharge valve until fully open. The pump should never be allowed to operate for long periods in a closed valve condition. SERVICE/MAINTENANCE Motor bearings fitted to Omega pumps are sealed for life and do not need greasing. The mechanical seal fitted to this range of pumps should be checked periodically and replaced if necessary. We recommend that the casing O ring (and circlip when fitted) is replaced when a mechanical seal is changed. 4

5 FAULT FINDING Fault Cause Action Motor does not start Electrical supply isolated Check motor terminals for correct voltage Blown Fuses Replace fuses and check current Loose electrical connections Tighten all electrical connections Motor runs and then cuts out Undersized wiring Rewire with larger cable Starter overload tripped Check overload sizing with motor F.L.C Incorrect motor links Check motor links for star/delta Pump failing to deliver Not primed Bleed pump of air Suction valve not fully open Open Valve Foot valve not fully submerged (open circuits) Lower suction pipework Air leaks in suction pipework Recheck all joints Wrong Rotation Change Rotation (check wiring phases) Foreign body in pump case Clear obstruction Pump leaking Mechanical seal damaged Replace seal Casing O Ring damaged Replace O ring Pump unduly noisy Pipework not supported correctly Check pipe supports Pipework causing undue strain on pump casing Cavitation (closed systems) Cavitation (open systems) Resupport pipework or reinstall pipework Increase static head Increase size of suction pipework Insufficient flow Incorrect rotation Change rotation (check wiring phases) Low voltage Check Electrical supply Air leaks in suction pipework Recheck all joints Valves not fully open Open all valves Partially clogged pump or pipework Clear obstructions Pump too small Replace pump Motor does not start but emits a hum Foreign body in pump casing Check motor is free to turn 1 phase motors, faulty capacitor Pump will operate correctly if spun but if it fails to re-start, replace capacitor 3 phase motors, phase dropped Check the supply phase 5

6 Representative and manufacture: Smedegaard Pumps Limited 10 Beech Business Park Bristol Road Bridgwater Somerset UK TA6 4FF EC-DECLARATION OF CONFORMITY Machine: Type: Circulation Pump Omega No: From to Consist of: Pump, Motor Manufactured in accordance with the Machinery Directive 2006/42/EC on the approximation of the laws of machines. Standards used: EN 12100:2011 -EMC Directive, ie. Council Directive 2004/108/EC of 15 December 2004 to approximate the laws of Member States relating to electromagnetic compatibility. Standards used: EN , EN Low Voltage Directive (2006/95/EC) Standards used: EN :2006, EN :2012 -Commission Regulation (EU) No 640/2009 Implementing Directive 2005/32/EC of the European Parliament and of the Council with regard to eco design requirements of water pumps. -Commission Regulation (EU) No 547/2012 Implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco design requirements for water pumps Copenhagen date Tommy Andersen Managing Director - Smedegaard Group Whilst every care has been taken to ensure that data is correct, no responsibility can be accepted for inaccuracies or misprints. It is SMEDEGAARD policy to continually improve and develop the product range. We reserve the right to change specifications without prior notice. Smedegaard Pumps Ltd - United Kingdom Tel. +44 (0) Fax +44 (0) info@smedegaard.co.uk T. Smedegaard A/S - Denmark Tel Fax info@smedegaard.dk Omega 24/05/2013