WMTA6 LN Multi-stage IOM-Rev
Contents
1. rear replace it if necessary d Each time you disassemble the bushing re place tolerance rings and bushing O rings 14 Flatten the magnet lock washer and 15 Pull out the internal magnet remove the internal magnet bolts 18 Pull out rear volute ring assembly 19 Remove rear volute ring backplate screws 20 Remove rear volute ring backplate 21 Follow the instruction shown at point 13 22 In case of worn or damaged sleeve bush 23 Pull out shaft sleeve bearings and replace if ings remove shaft sleeve worn or damaged Replace the tolerance rings every time you replace sleeve bushing 24 Remove the impeller and replace it if worn 25 To remove the external magnet or damaged unlock the hub screw 26 Pull out the magnet from motor shaft using an pacha CAUTION e Replace all damaged or worn parts e Thoroughly clean all parts before assem bly Make sure all parts are free of dirt metallic particles etc e Tore assembly the pump following the above instruction in reverse NOTICE The information in this user s manual is subject to change without notice The manufacturer or resellers shall not be liable for errors or omissions contained in this manual and Shall not be liable for any consequential damages which may result from the performance or use of this manual The information in this user s manual is protected by copyright laws No part of this manual may be photocopied or reproduced in any form2. suction piping No Flow Flow restricted by vapor pockets in high points of suc NPSH actually lower than NPSH tion line requirement listed on specification sheet No pressure at start up Suction tank level or pressure too low Entrained air or vapor in pumped fluid NPSH reduced by presence of more volatile fluid in process fluid Failure of drive component such as interconnecting shaft or impeller Disassemble and inspect key or item missing from assembly Insufficient flow or head rise Motor Overloaded Excessive discharge pressure pulsations Reverse direction of rotation NPSH actually lower than NPSH requirement listed on specification sheet Flow too low causing overheating of fluid resulting in internal boiling or unstable pump operation Diffuser discharge partially plugged or impeller damaged by passage of solid particle Process fluid specific gravity or viscosity different from values shown on specification sheet Drive speed too low Pressure gauges of flow meters in error Fluid specific gravity or viscosity higher than values listed on specification sheet Electrical failure in electric driver Mechanical failure in driver or pump Insufficient NPSH Note Impeller and driver rotate in the same direction Refer to solutions listed under No Flow no pressure at start up Increase through flow rate By pass part of pump discharge to supply tank Use seal cavit
3. without prior written authorization from the copyright owners WARRENDER LTD Ph 847 247 8677 Fax 847 247 8680 821 Sivert Drive www warrender com Wood Dale IL 60191 T email sales warrender com Seal less Mag drive Pump Specialists
4. WMTA6 LN SERIES SEAL LESS MAG DRIVE MULTI STAGE TURBINE PUMPS INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS TO OBTAIN THE BEST PERFORMANCE FROM YOUR WARRENDER WMTA6 LN PUMP PLEASE READ THIS MANUAL CAREFULLY Failure to follow the recommended procedures may result in early and severe damage to your WARRENDER pump and may also invalidate the guarantee Thank you for your purchase of a WARRENDER WMTA6 LN Series Multi Stage turbine pump Proper installation and maintenance will provide many years of trouble free operation 86 65 1 16 84 40 2 51 62 16 10 51 30 10 18 a be HE F 51 85 61 65 2 40 1 65 3 61 15 15 D D 82 20 Cesa StudNuts SSG Shaft Ext Magnet Neodym Steel Sleeve Bearing incl of screw Steel d Bearing e Tolerance Rings Centrifugal Impeller 8316 Stationary Bushing f Stationary Bushing Turbine Impeller S8316 e Tolerance Ring Bracket Cast Iron Fade peels Pump Head Carbon Steel incl of pins incl of drain plug Steele aaa O SSS 8 End Gover Carbon Ste Centrifugal Impeller 10 30 40 1 40 2 51 61 Lockwasher sse 62 65 2 70 75 76 84 02 EE Thrust Bearings 84 FrontRing 1 SAFETY INSTALLATION OPERATION AND MAINTENANCE MUST BE DONE BY QUALIFIED PERSON NEL IN STRICT ACCORDANCE WITH THIS MANUAL AND MUST COMPLY WITH ALL LOCAL STATE AND FEDERAL CODES For your protection and the protection
5. amage has occurred 3 STORAGE lf the pump is not installed immediately it should be protected from exposure to moisture and dust Shipping protections on the ports installed at the factory must be kept securely in place Storage instruction provided by the driver manufacturer should be observed 4 INSTALLATION 1 The foundation should be substantial in order to reduce vibrations and rigid enough to prevent flexing that can result in misalignment Foundation bolts of the correct size should be installed by referring to certified drawings if the baseplate is supplied with the pump 2 The pump must be mounted horizontally on a level foundation with the discharge port facing up wards 3 When installing a close coupled motor pump unit without baseplate level the pump base accu rately using shims under the pump feet The pump must sit firmly and evenly on its foundation It must not be distorted by bolting to an uneven surface 4 Bare frame motor pump unit on baseplate level the baseplate accurately using shims under the baseplate next to the foundation bolts The baseplate must sit firmly and evenly on its foundation it must not be distorted by bolting to an uneven surface that will throw the pump and motor out of alignment 5 OPERATION SAFETY BASICS Listed below are some of basics you should keep in mind in addition to company rules regarding in Stallation operation and maintenance NEVER start pump without proper pr
6. ime casing must be full of liquid NEVER operate pump with the suction or the discharge valve closed NEVER run pump dry over a few minutes NEVER operate pump if there are signs of leakage NEVER change pump service condition without approval of your Warrender Pump representative NEVER loosen port connection while system is under pressure NEVER attempt to clean the pump while it is operating NEVER operate pump above rated temperature and pressure NEVER Pump liquids containing ferromagnetic particles of any size or substances that will erode or chemically attack the internal parts of the pump If in doubt please contact your pump supplier for advice NEVER Restrict both the inlet and the discharge lines while the pump is running Restriction of the inlet may cause the pump to cavitate leading to loss of efficiency and rapid wear Reduced flow can be obtained if required by a valve branch from the discharge side of the pump back to the liquid source If the pump is to be shutdown for an extended period circulate clean water or other suitable solvent compatible with pump materials for several minutes to avoid the risk of internal precipitation or encrustation 6 PUMP IDENTIFICATION Every Warrender pump unit has a nameplate located on the side of the casing It is recommended that the purchaser record the serial number and reference it when requesting information or service parts from Warrender Ltd The serial number
7. must be used for all correspondence and spare parts order 7 SUCTION AND DISCHARGE PIPING Piping should be supported independently of the pump and the line up naturally to pump ports Suction piping should be installed with as few restrictions as possible to provide no less than minimum NPSH as listed on the specification sheet The length of the suction pipe should be kept to a minimum Suction line should be clean and or a strainer should be installed to protect the impeller from damage by welding slag mill scale or other foreign particles during initial start up Pump suction use only a full flow valve Pressure gauges should be installed in both the suction and discharge piping The gauges will enable the operator to easily observe the operation of the pump and to control if the pump is operating in conformance with the duty point required lf cavitation or other unstable operation should occur widely fluctuating pressure will be noted 8 ELECTRICAL DANGER WARNING Only a qualified electrician should make the electrical connections to the pump drive motor Thoroughly read motor manufacturers instructions before installation Check motor nameplate data to be certain that all wiring switches starter and overload protection are correctly sized Install the motor according to local electrical codes Check all connections to the motor and starting device with wiring diagram Check voltage phase and frequency on mot
8. of others always follow the safety rules outlined in this book let Observe warning signs on machines and act accordingly Form safe work habits by reading the rules and abiding by them Keep this booklet handy and review it from time to time to refresh your understanding of the rules The use of the word DANGER always signifies an immediate hazard with a high likelihood of severe personal injury or death if instructions including recommended precautions are not followed The use of the word WARNING signifies the presence of hazards or unsafe practices that could result in Severe personal injury or death if instructions including recommended precautions are not followed The use of the word CAUTION signifies possible hazards or unsafe practices that could result in minor injury product or property damage if instructions when recommended precautions are not followed SDTM series are magnetic driven pumps The use of the word Magnetic indicates the persistent presence of a magnetic field Such fields present immediate danger to individuals having electronic medical devices metallic heart valves metallic prosthetics or metallic surgical clips 2 INSPECTION All Warrender pumps are inspected prior to shipping and prepared for safe transportation Upon receipt of the WMTA6 LN series pump check for any damage that may have occurred during shipment Notify the courier and Warrender Ltd Pumps promptly if d
9. oning it must be thoroughly drained and cleaned by the cus tomer 1 Remove bolts connecting pump and motor to foundation or base plate 2 Remove hex bolts connecting pump to motor 3 Separate the pump from the motor end by pulling the driver away from the pump WARN NGMAGKETIC Warrender pumps contain extremely strong magnets The use of non magnetic tools and work surface are highly recommended There is strong magnetic attraction when disassembling assembling drive end to liquid end The shop area must be clean and free of any ferrous particles 4 Place the pump with the suction port facing up ward remove hex screws connecting the bracket from the pump casing Then pull off the bracket assembly 5 Remove the O ring and replace it each time the pump is disassembled 6 Unlock impeller nut and lock washer 7 Remove the impeller 8 Unscrew the two screws that locks volute 9 Remove pump casing screws ring in the back of centrifugal stage Reminder Keep all metal tools away from magnetic field of the inner magnet 10 Remove rear casing O ring Note O ring should be replaced each time you disassemble the pump 11 Extract internal assembly pulling the inter nal magnet with your hand 12 Extract front volute ring 13 To disassemble the volute ring a Remove lock washer screw b Pull out lock washer and wear ring replace the wear ring if worn or damaged c To extract the bushing push from the
10. or nameplate with line circuit NOTE Install a flexible electrical conduit on the motor to allow movement of at least 12 inches This is necessary to service and inspect the pump 9 PUMP SPEED WMTA6 LN pumps are designed to rotate at soeeds up to 4000 RPM Standard speeds are ELECTRIC 50Hz 60Hz MOTOR 2POLES 2900RPM 3500RPM 4POLES 1450RPM 1750RPM If the pump is driven at variable speeds via an a c frequency inverter keep within the recommended limit of speed 10 STARTING Fully open the suction valve Pump requires a flooded suction Do not operate pump with suction or discharge valve closed Operating pump more than a few minutes with the suction valve closed can cause bearing failure CAUTION CAUTION WMTA6 LN pumps sense of rotation is not At start up immediately check pressure gauges reversible If discharge pressure is not quickly reached stop Check driver for proper rotation the motor reprime and attempt to restart Correct rotation is counter clockwise when Check the pump and piping to ensure that there viewed from the pump casing are no leaks Investigative Trouble Possible cause corrective action Bleed all vapor or air from port 6 Allow more cool down time if pumping low temperature Pump not completely filled with fluid liquid Check suction line for air leak if suction pressure is lower than atmospheric Suction line blocked check suction screen and valve Excessive pressure drop through
11. y bypass and vent the high point of pump to continuously increase inlet flow rate Clean these areas of all obstructions and restore surfaces to a smooth polished finish use emory cloth or machine free of all corrosion pitting Check actual viscosity and specific gravity at operating temperature Viscosity higher than ten centipoises will cause reduced head and flow with increased power consumption Check speed against value listed on specification sheet Calibrate instrumentation Check actual viscosity and specific gravity against value listed on specification sheet Check circuit breaker heater size and setting Check Voltage Current for each phase should be balanced within three percent Remove driver and check for freedom of rotation of pump shaft assemblies Remove fluid end and search for any me chanical failure Refer to solution for insufficient NPSH under No Flow no pressure at start up above 11 MAINTENANCE AND DISASSEMBLY The maintenance and disassembly procedure are intended for use during standard field inspection or service Warrender Pumps WMTA6 LN series contains very strong magnets The use of a non metallic work surface is highly recommended A Disassembly Proceed with caution Make sure the pump has cooled down if it is recently handled hot liquids Wear protective clothing and eyewear if the pump has handled any dangerous or toxic liquids The back to the manufacturer for reconditi
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