MAGNETICALLY DRIVEN CHEMICAL PUMP
Contents
1. RG114 RG451 lt 890 ry Y RG368 161 02 516 211 847 920 921 B22 Ae AMA SERIES Annex F Exploded View and Parts List of AMA FP C Pump casing T Front thrust ring SSiC 155 01 186 03 M01 181 161 01 EM ei S Shaft SU 155 01 155 02 155 03 161 01 161 02 C y Magnet capsule ETFE Nd Fe B Nut amp washer SUS3162. Shaft nut ETFE Rear casing with ETFE CF CARBON cover FRP Backup plate 343 RG451 Protection ring J optional part BRASS a l E see Annex G RG368 161 02 516 211 847 920 921 B22 K M01 Drivemagnet_ Nde b jRG Oring MITON EPDM Z AMA SERIES Annex G Description of ATEX specific marking The ATEX specific marking of pump body without motor is indicated on the name plate Please check the name plate on the motor for ATEX specific marking for the motor The ATEX specific marking indicated on the name plate of AMX CO H 2 G c HA T6 Distinctive Community mark The specific marking of explosion protection Equipment group Equipment category Atmosphere containing explosive gas vapors or mist Protection type For constructional satety Gas Group Temperature class Max permissible surface temperature 85 C When pump 1s installedun a potentially explosive atmosphere be sure to select an explosion proof motor andmake sure both the pump and the motor are suitably rated for the environment DANGER The protection ring must be installed to prevent spark generation from contact between outer magnet ring and bracket or backup plate under abnormal circumstances Both pump and motor must be properly g
3. 19 Annex D Disassembling the AMA DT EFP Pump 2 0 Annex E Exploded View and Parts List of AMA DT 2 2 Annex F Exploded View and Parts List of AMA FP SN Annex G Description of ATEX specific markIng 2 4 AMA SERIES 1 Foreword Thank you for purchasing an ASSOMA pump To ensure proper operation and maximum efficiency please read this instruction manual carefully Failure to follow the recommended operating conditions outlined in this manual may result in serious personal injuries and or equipment damage 2 Safety Requirements This section lists general information about the safety The relevant safety requirements of installation wiring operation and maintenance will set out in the relevant sections ASSOMA INC does not assume responsibility for personal danger or property damage resulting from failure to follow the safety instructions contained herein The explosion proof grade of AMA series 1s varied according to materials used together with type of motor matched Please follow the order specification sheet or contact ASSOMA s local agent Be sure to turn the power off before any wiring or disconnection operations The customer should not modify the pump under any circumstances Doing so could result in an unexpected accident ASSOMA INC shall not be responsible for accidents or damage resulting fro
4. 2 Pump s disassembly assembly and notes to be attended refer to Annex A Inspection Item 1 Cracks 1 Replace 2 Scratch marks except when 2 Contact the distributor Front and rear pumping particle laden fluids ici 3 Crystallization or sludge 3 Clean 4 Shaft support loose or deformed 4 Contact distributor Front casing o ring Deformed corroded or swollen 1 Scratch marks or cracks 1 Contact distributor 2 Cracked bearing or crystallization 2 Contact distributor 3 Bearing displays signs of some 3 Replace if worn excessively magnet assembly oo 4 t n 4 Crystallization and other sludge 4 Clean 5 Foreign objects stuck in impeller 5 Remove the objects 6 Impeller deformed 6 Contact distributor ring 2 Cracks 2 Replace 1 Resistance of three phases and 1 Repair or change if abnormal is insulation impedance found 2 Check amount of lubricant when 2 Keep amount of lubricant at proper using open bearing level Table 7 2 Maintenance and wear tear limits Maintain the magnetic pumps by controlling the wearing parts like bearing shaft thrust ring and wear ring To avoid damages at the pump we recommend controlling the wearing gap limit l2 AMA SERIES between bearing and shaft not exceed 0 8mm while between thrust ring and wear ring not exceed 1 0mm You need only to change one of parts with heavier wear and tear During disassembly of the magnetic pump the dimensions of following com
5. Sa O LL J f 15 LOY I VW C4 3 2 E N a Ls Fig 4 1 Fig 4 2 Bad Piping Designs Ti K SI N TS L NIID gt 0 5m a Ga of gt 1 5D 4 E ete cee D Diameter gt 1 5D a J ig l Fig 4 4 N AN Fig 4 3 AMA SERIES Items to Note Suction condition must satisfy NPSHa gt NPSHr 0 5m 2 Reduce inlet Head as much as possible Use straight and short piping The pipes should have adequate structural support and shouldn t use the pump as its primary support see Fig 4 1 When designing supports consider the effects of temperature changes on the supports to avoid thermal stress General Inlet piping and connectors should be installed properly to prevent sucking in Requirements air The piping system should not have upward bumps that may collect air The inlet piping should also have a 0 01 0 02 slope increase towards the pump see Fig 4 2 There should not be any elbows for at least 5 times the pipe diameter from the opening of the pump The elbow closest to the pump opening should be a long radial elbow There should be at least a 1 5 diameter distance between the pipe inlet and the closest tank wall to prevent circulation see Fig 4 4 The submerge depth of the inlet should
6. e bet QUALITY MANAGEMENT S H RIE S Reg No 059 A MAGNETICALLY DRIVEN CHEMICAL PUMP USER MANUAL hagin AL Symbols used Situation where improper handling or operation failure to follow this manual would almost certainly result in death or serious bodily injury DANGER Situation where improper handling or operation failure to follow this manual could result in death or serious bodily injury WARNING Situation where improper handling or operation failure to follow this manual could result in bodily injury or equipment damage CAUTION AMA SERIES Table of Contents Pe cs ce ah p 2 2 Safety Requirement sss sese sese sese H p 2 3 Inspecting the Pump Prior to Unpack the Carton Install the Pump 3 4 Installation Piping and WirIng c s lt lt lt lt lt lt lt 55585 52 4 5 Notes for Opecratlon adi Reig 3 6 Operating Procedure and Notes 5 77c 232 lt lt lt 10 7 Maintenance and Inspection 4 TT T W l 2 8 Incorrect Usage and Selection S gt 14 9 Repair and Warranty T Se ilies Annex A Disassembling the AMA CT EP Pump 16 Annex B Exploded View and Parts List of AMA CT 18 Annex C Exploded View and Parts List of AMA EP
7. lead to personal injury 13 AMA SERIES When handling a toxic or odorant liquid ventilate the working area well In addition the operator must wear protector gear such as a safety mask safety goggles and protective gloves WARNING 2 No remodeling Remodeling of the pump by the user may result in serious injury electric shock or damage to the pump Do not attempt to remodel as it is very dangerous Magnetic field hazard Be careful not to get your hands or fingers pinched by parts Impeller 1s encapsulated strong magnet inside While do not let the magnet close to the magnetic sensitive objects such as magnetic cards computer equipment etc Use the right tools for any maintenance or disassembly and assembly Be careful with hazardous liquids If pumping dangerous chemicals be sure to drain and wash well before disassembling A small amount of fluid may however remain 1n the internal parts or pipe fittings CAUTION 8 Incorrect Usage and Selection Abnormal Condition Possible Effect Damage System resistance too high L Insufficient or no flow or 2 Pump unable to effectively dissipate heat Pump head too low 3 Excessive wear on bearing and thrust rings Resistance lower than expected 1 Excessive flow or 2 Overloading of the motor Pump head too high 3 NPSHa too low resulting 1n cavitation 1 High frequency vibration and noise 2 Fracturing of the bearing and thrust rings 3 Decreased p
8. SSCCERAMC 230 c D 310 Bearing SSiCARBON E 534 Rearthrustring S C CERAMIC Rear casing with ETFE CF CARBON 161 01 cover FRP 161 02 FCD G 912 Drain plug _ JETFE CF H B1 Base SUS304 a Protection ring optional part see BRASS Annex G Bracket foot SUS304 K M01 Drive magnet Nde 5 L EM Motor FC Aluminum Alloy RG O ring VITON EPDM 155 03 516 161 01 _MO1 181 _EM AKO 5259 L I l Laag 1 V a aa LL l l gt JA SN l xin 7 Z L 19 PO OT HS SOs co 2 r 46102 310 847 211 S34 183 AMA SERIES Annex D Disassembling the AMA DT FP Pump a The magnets used in our AMA DT FP magnetic drive seal less pumps have very strong magnetic strength Take extra precautions when disassembling the pump to prevent personal injury and
9. be at least 0 5m or at least twice the pipe diameter below the liquid surface see Fig 4 4 There should be a distance of at least 1 5D between the bottom of the tank and the beginning of the inlet pipe opening see Fig 4 4 If there are two or more inlet piping 1n the same tank they should be placed at least 3D apart to prevent mutually disrupting each other s flow Foot Valve Please install a foot valve if upward suction is used see Fig 4 1 1 If suction method is upward suction please install a self priming cylinder to Self Priming prevent dry running due to a leaking foot valve Cylinder 2 The size of the self priming cylinder should have a minimum liquid level of at least 0 5m above the opening of the pump Acontrol valve should be installed to make disassembling of the pump easier The valve should only be shut off when the pump is to be detached for Control Valve maintenance or repairs We recommend the use of valves that have the least loss when fully opened like a gate valve It is generally not recommended to install a filter in front of a pump which can unpredictably increase suction system resistance Inlet Piping 3 Inlet Piping puter If a filter has to be used 1t should be cleaned regularly to ensure a smooth flow The material used should be corrosion resistant otherwise a pressure gauge Vacuum diaphragm should be used During operation if the vacuum gauge reading fluctua
10. damage to electronic and magnetic equipments like diskettes magnetic stripe cards etc b For personal safety wear protective gear like corrosive resistant aprons and protective eyeglasses during disassembly to prevent injuries caused by spilled chemicals c Please follow the reverse procedure for disassembly to assemble the AMA DT FP pump Note Following steps are for periodic maintenance or repair under abnormal condition Pump disassembly 1 Switch off power 2 Shut off inlet amp outlet valves 3 Use 12 open end wrench to unscrew the drain plug 4 Drain the pump and use proper container to keep the liquid For personal safety wear protective gear like corrosive resistant aprons gloves and protective eyeglasses during disassembly 1 Dismount pump head by unscrew M12x30L hex screws and M12x40L inner hex screws 2 Hoist motor and bracket to pull out from the pump head N Piace the motor safely with suitable support to prevent the danger of tumbling 1 Unscrew inner hex screws M10x20L 2 Dismount backup plate and rear casing 3 Remove o ring Aif the transmission fluid in the pump is not discharged completely when unlock the screws on the back cover the liquid will start to leak Please pay attention to the staff s safety and the pollution to environment 2 U AMA SERIES Take off Inner Hex Screws M10x40L assembly and rear thrust ring Dismount bearing fram
11. plate etc are securely fastened 10 AMA SERIES 3 Fill the pump with liquid priming to remove any air within the pump and suction piping 4 Check to ensure the inlet valve is open 5 Using a screwdriver rotate the motor s cooling fan to ensure it is not too tight or stuck Starting Up the Pump 1 Check the direction of rotation of the motor by rapidly switching on and off the power 2 Direction of motor rotation can be checked from the fan side It should be clockwise seeing from the fan cover follow arrow direction on the fan cover If the rotating direction reverses change wiring phases by shifting any two wire connections 3 Close the outlet valve and start up the pump 4 Slowly open the outlet valve when the motor has reached a stable speed Adjust the outlet valve to obtain the desired operating pressure or flow rate Operating the Pump 1 Shut down the pump immediately 1n the case of cavitation or dry running 2 If decoupling should happen shut down the pump to prevent reducing the magnet s strength 3 During power outages shut off the pump s power supply and close the outlet valve 4 When switching on the pump with the outlet valve closed the outlet pressure should increase If the pressure fails to rise or if the pressure is too low shut down the pump and check the piping and wiring NOTE Outlet Pressure Inlet Pressure Pump Pressure Pump Pressure kg em Fluid Specific Gravit
12. thrust ring SSiC CERAMIC TS Nh y i 161 04 Rear casing with ETFE CF CARBON J INT NN SAIS e cover FRP ae than ZIM S STZ Backup plat Rey 8 Material a ETFE CF L 912 Drain plug ETFE CE SUS304 IVA Protection ring optional part see BRASS Annex G Bracket foot SUS304 S M M01 Drivemagnet Nd Fe B B11 847 310 S34 211 183 FC Aluminum Alloy RG O ring MITON EPEM 18 AMA SERIES Annex C Exploded View and Parts List of AMA EP dan gt ce ae DN Wy i eee a 7 nnt T ot LI i SS Part 101 155 01 168 02 Inletarmou 168 03 Outletarmou B 244i Sham
13. RNING information Use the pump strictly in accordance with the pump specifications and application range If the user intends to change any specification contacts ASSOMA INC or the authorized dealer in the near region to obtain the permission in writing before operation Unpack a pump for inspection without proper hoisting or support of lifting equipment may cause serious personal injury or damage to the pump CAUTION AMA SERIES 4 Installation Piping and Wiring 4 1 Installation Location 1 The pump should be close to the ground and located near the inlet tank 2 There should be sufficient space reserved around the pump to facilitate future maintenance and repairs 3 The pump and its wiring should be placed in a relatively dry environment protected from possible flooding 4 Install in the place where the ambient temperature is not above 40 C 5 Fastening the pump to base plate or machine with anchor bolt 1 Be sure to use the hanger bolt to lift the pump Do not hang with the other position of the pump When hoisting do not pass under a raised pump A serious injury could occur if the pump is accidentally dropped Before lifting check the weight of the pump Do not lift a pump which exceeds the rated weight of the hoist And be sure no one standing below the pump while lifting or transporting WARNING 2 Install or store the pump 1n the following places with special care and consult with ASSOMA INC or auth
14. do so could result in electrical shock Install an earth leakage breaker The operation of a pump without using an earth leakage breaker may cause an electrical shock Install an optional leakage breaker in the system before running operation Grounding wire should be consistent with the third type of grounding grounding resistance 1s 10Q or less Each pump must have a separate grounding wire directly connected to the common ground terminal and must not form a loop between wires Ifthe long wiring results more than 3 voltage drop in the line replaces with bigger size of wires 5 Notes for Operation 5 1 Dry Running 1 Our pump use the transfer fluid as its internal cooling system therefore dry running the pump can cause the temperature to rise to a dangerous level that may seriously damage the pump 2 If dry running occurs switch off the pump immediately let it cool for at least an hour 8 AMA SERIES before priming the pump to prepare it for normal operation NOTE Do not subject the pump to rapid cooling which may damage the internal parts 3 We recommend using a dry run protector to detect dry run occurrences to avoid causing unnecessary damage to the pump 5 2 Operating Temperature 1 Operating temperature may change the fluid s viscosity vapor pressure and corrosiveness Please ensure that your pump 1s operating within the proper temperature range 2 The optimal temperature range for pumping pu
15. e impeller assembly and o ring Unscrew shaft nut clockwise 2 Remove o ring nut and washer The tightening torque between nut and Shaft is 100N m Remove inner magnet and o ring Dismount impeller shaft sleeve and bearing frame then remove shaft sleeve J Parts to be separated such as bearing frame with impeller shaft sleeve don t separate the parts forcibly to prevent breakage Inner magnet being demagnetization or Any deformation or imbedded particles swollen on the Impeller _ Wear and tear of bearing and wearing Any crack on thrust ring and shaft ring _ Any corrosion being detected on the _ Any scratch mark being detected on wetted parts impeller front casing and rear casing Items to check Al AMA SERIES Annex E Exploded View and Parts List of AMA DT L Pu casing C c n r asing armour 15502 niet amour FC 18309 a cm Qt shat l U R E oS ss l ane C ETFE CF a T S 847 Magnet capsule ETFE Nd Fe B 920 Nut amp washer SUS316 gt Bh na p2 for Shatin R 3g Rear casing with ETFE CF CARBON cover Backup plate Drang E PEGE ae Protection 6 optional part BRASS see Annex G K M01 Drive magnet NdFeB jRG Oring MTONEPDM Nee N 155 03 MO1 18116101 EM
16. event back flow water hammer from damaging the pump during unexpected power outages Acontrol valve can be used for controlling the flow of fluids Do not run the pump with the control valve closed for an extended period of time When starting the pump always start with a closed valve and then slowly open the valve to obtain the desired operating pressure and flow Always open Control Valve or close the valve gradually To facilitate the adjustment of discharge flow and the adjustment of motor overload it is recommended to install valves on outlet piping And if both a check valve and a control valve are to be installed the order of allocation 1s pump gt Check Valve gt Control Valve Exhaust A vent should be installed if the horizontal section of the outlet piping is very Valve long Cautions when dangerous liquids are transferred When the pumps are used to transfer the dangerous liquids mentioned as below the pumps piping and fittings must be checked and watched so that the liquids can not be leaked WARNING Leaking the liquids may result in personal injury and or explosion fire accidents a Explosive and inflammable liquids b Corrosive and stimulus toxic liquids c Liquids could directly harm the human body or detrimental to health d Liquids could produce a chemical reaction Wiring The wiring system should be done properly using premium equipment and complying with rules and standards set by
17. exterior for any physical damage that may have been incurred during shipping Use a small screwdriver to rotate the impeller of the motor s cooling fan The fan should turn easily If the fan feels tight or if there are unusual sounds the interior of the pump may have been damaged during shipping If there is any damage to the pump contact the shipping company and the distributor immediately to determine who should pay for the damage and to arrange for replacement parts Each pump has a nameplate indicating the pump model MFG number rated head flow rate and motor power voltage and frequency Check these data to ensure they comply with your order and application When using versatile motor with 50Hz and 60Hz compliance be sure to use suitable diameter of impeller according to the frequency of power A wrong diameter can cause the motor overload frequency is too high or insufficient pump performance frequency is too low The information of nameplates on motor and pump is key for operation setup and pump maintenance Please keep the nameplate intact for reference The nameplate of a pump indicates the optimum point of its operation Therein Total Head Static Head Dynamic Head Va V Total Head H 2g The pump is designed and manufactured to the specifications agreed upon by the user and ASSOMA INC such as fluid composition fluid temperature working pressure environmental conditions and necessary operational WA
18. m equipment modified by the customer Be sure to take special precautions when performing operations if using hazardous explosive or inflammable liquids Magnetic field hazard AMA rotor including the drive magnet and driven magnet uses strong permanent magnet Pay attention to potential hazards from powerful magnetic fields to persons such as who are assisted by electronic devices The pump operator and pump operation supervisor must not allow any operator who has little or no knowledge of the pump to run the pump Pump operators must have a sound knowledge of the pump and its WARNING operation Do not use a damaged pump Doing so could result in injury or fire Keep away from heat or flame Do not place any open flame or flammable object near the pump Transport installation piping and wiring connections operation adjustment maintenance and inspection should be carried out by qualified personnel Having unqualified personnel perform these tasks CAUTION could result in electrical shock injury or fire Do not block name plate or warning labels for view Do not stand on the pump or use the pump as s step under any circumstances Otherwise you may experience a serious injury Disposal of used or damaged pump must be done in accordance with local laws and regulations AMA SERIES 3 Inspecting the Pump Prior to Unpack the Carton Install the Pump 1 2 3 4 5 6 7 Check the pump
19. nd vibrations caused by sucked in air 2 Fracturing of the bearing and thrust rings 3 Dry running l 2 Low inlet tank fluid level Produce vibrations and noise Reduced efficiency and flow Serious cases may result in dry running Insufficient cooling of pump 2 Excessive radial and axial force reducing service life of bearing and thrust rings 1 Low NPSHa resulting 1n cavitation Transfer fluid temperature too high 2 Reduced strength of the magnet resulting in decoupling 1 Rapid wearing of the bearing 1 Resulting in vibrations and noise 2 Reduced pump performance and fluid flow 1 Produce vibrations and noise 2 Overloads the motor 3 High Motor temperature Wear rine sera 1 Produce vibrations and noise K 2 Overloads the motor e Foreign objects stuck in impeller Low flow over extended period of time Improper Operation Damaged motor bearings 1 Produce vibrations and noise 2 May result in fracturing of the impeller shaft 1 Reduced pump performance and low flow rate Blockage of inlet piping or foot valve or may result in cavitation Serious cases may result in dry running Low flow or no flow Pump unable to dissipate heat Serious cases may result in overheating of the pump and outlet piping Wearing of the impeller bearings Improper Maintenance Blockage of the outlet piping 9 Repair and Warranty When a problem arises please
20. orized dealer in the near region a Places where flammable gas dust or material is used or placed CAUTION b Places where corrosive gas is generated Places where the ambient temperature is extremely higher than 40 C or extremely lower than 0 C 4 2 Piping 1 AMA flange screw is either M16 or 5 8 2 The allowable load of pipe on the pump SUCTION Model Force N m Moment N m Fx AMA SERIES DISCHARGE Model AMA EP 800 900 1000 1500 600 500 600 800 _ AMA CT 800 900 1000 1500 600 500 600 800 _ AMA DT 900 1000 1000 1500 700 600 700 1000 900 1200 1000 1600 700 600 700 1000 Notes for Installing the Piping System 1 Outlet Piping 2 Throttle Valve 1 3 Priming Piping th Bad 4 Priming Valve 1 2 e K p 5 Check Valve Bex aI am 6 Outlet Pressure Gauge 4 SN 5 KT 7 Motor x wf x6 Res 8 Pump ah it 4 f 7 e 9 Inlet Pressure Gauge a 3 10 Inlet Piping IF mal 11 Inlet Piping Support g ei K 12 Vibration Damper 19 ll Ms py S427 TA E Ga 13 Filter P IC 0 01 0 02 slope _ Goo 14 Inlet Tank 13 gt qo lo ane oe a a ee 15 Foot Valve 7 la ZZ 7 A A _ Se 77 yo
21. ponents should be checked E 7 Pima Unit mm part Dimension New part Time to change Moda Shaft outer diameter AMA CTIEP Thrust ring thickness 7 6 W Wear ring thickness za gt Shaft sleeve outer diameter AMA DIVEP Thrust ring thickness Wear ring thickness Preventive Maintenance Operational data like vibration flow rate voltage etc can be collected and upper and lower limits can be set for each of the values The collected data can be used for trend analysis see Fig 7 1 which can be a basis in which to determine when to carry out preventive maintenance The vibration value should be lower than 4 5mm sec RMS measured on the surface of bracket and the noise level should be below 85dB at operating point UCL LCL Measured Date UCL Upper contorl Limit N LCL Lower contorl Limit Time Figure 7 1 L AMA s powerful permanent magnetic coupling could adversely affect persons who are assisted by electronic devices such as pacemaker Be sure to turn the power off before performing any type of maintenance DANGER repair or inspection Make special provisions so that no other operator mistakenly turns on the power supply while someone is working on the pump In a noisy or poor visibility environment display a sign near the power supply switch to notify others that someone is WORKING on the pump Power supply mistakenly turned on during maintenance may
22. r the pump it may cause pump damage or failure Turn off the power at once and remove the obstruction CAUTION AMA SERIES 5 5 Maximum Operating Pressure The pump s maximum operating pressure is dependent on the operating temperature and the structure of the pump Please refer to figure 5 1 for the recommended maximum operating pressure for our AMA SERIES pumps bar 16 0 95C Figure 5 1 AMA allowable working pressure 5 6 Minimum Flow Our pumps use the pumped fluid as their cooling and lubricating system A low flow rate may result in increasingly high temperature within the pump and increased radial and axial force thus affecting the pump s performance and service life Please use table 5 1 for the recommended minimum flow rate Table 5 1 Unit L min Temperature 40 C GU C RU C 95 C 1 AMACT E 6 aw io 150 120 Note 1 Above data 1s based on water For volatile or viscous fluids please consult your local distributor 2 Please do not operate the pump under minimum flow rate over minute Do not operate the pump with outlet valve shut off more than 1 minute Long time shut off will cause the inside to heat up and damage the pump CAUTION 6 Operating Procedure and Notes Notes Prior to Starting the Pump 1 Check the motor s power rating including frequency voltage and wiring 2 Recheck to make sure all the parts flange pump casing base
23. re water Body material ETFE CF 0 95 C 3 Please consult the distributor for the temperature range suitable for your chemicals 4 We recommend the operating environmental temperature to be between 0 C 40 C When the pump is used to feed a hot liquid do not touch the front cover or the piping with your bare hands It may cause burns Any reachable hot surfaces including pumps motors and piping must provide isolate device and CAUTION display obvious warning signs for high temperature 5 3 Concentrations Viscosity and Specific Gravity 1 A change in a fluid s concentration will usually affect its viscosity and specific gravity Other physical properties like corrosiveness may also change with the fluid s concentration therefore the selected pump material should be able to withstand the corrosive properties of the fluid 2 When the fluid s viscosity and or specific gravity differ from that of water the shaft power flow rate and pump head may change also 5 4 Particle Size Sludge 1 The service life of a pump can be greatly shortened by pumping fluids that carry small particles or sludge Its service life 1s dependent on the concentration of the particles its size and hardness 2 For particle concentration less than 5 particle size smaller than 50um and hardness within 80Hs which has SiC bushings can be used However a shorter than normal service life can be expected Should foreign matter ente
24. read this instruction manual and try to troubleshoot the problem If the problem cannot be found or if replacement parts are needed please call the distributor and give them the following information 1 The pump model and manufacturing serial number indicated on the nameplate 2 The operating condition 3 The situation under which the pump fails Please refer to the warranty card for details of the warranty terms and conditions l5 AMA SERIES Annex A Disassembling the AMA CT EP Pump a The magnets used in our AMA CT amp EP magnetic drive seal less pumps have very strong magnetic strength Take extra precautions when disassembling the pump to prevent personal injury and damage to electronic and magnetic equipments like diskettes magnetic stripe cards etc b For personal safety wear protective gear like corrosive resistant aprons and protective eyeglasses during disassembly to prevent injuries caused by spilled chemicals c Please follow the reverse procedure for disassembly to assemble the AMA CT amp EP pump Note Following steps are for periodic maintenance or repair under abnormal condition Pump disassembly 1 Switch off power 2 Shut off inlet amp outlet valves 3 Use 12 open end wrench to unscrew the drain plug 4 Drain the pump and use proper container to keep the liquid T For personal safety wear protective gear like corrosive resistant aprons gloves and protective eyeglas
25. rounded or there may be a risk of static electric discharge Neverrun pump without priming Never operate the pump below the minimum recommended flow rate for over 1 minute 24
26. ses during disassembly 1 Dismount pump head by unscrew M12x25L hex screws and M10x30L inner hex screws 2 Hoist motor and bracket to pull out from the pump head T Place the motor safely with suitable support to prevent the danger of tumbling 1 Unscrew inner hex screws M10x30L 2 Dismount backup plate and rear casing 3 Remove o ring N pe aware of the safety of person and the pollution of the liquid The liquid left inside the pump will leak or flow out of the pump when the backup plate is disassembled 2 When take off Backup Plate use your finger against the Impeller to prevent it dismounted together and cause damage 16 AMA SERIES 1 Dismount impeller magnet bearing assembly and rear thrust ring 2 For AMA CT series Buffer thrust ring assembly shaft and front shaft support can be dismounted A Pull out Impeller from the Shaft carefully Don t separate the parts a l forcibly to prevent breakage _ Inner magnet being demagnetization or Any deformation or imbedded particles swollen on the Impeller _ Wear and tear of bearing and wearing _ Any crack on Thrust Ring and Shaft ring Any corrosion being detected on the _ Any scratch mark being detected on wetted parts impeller front casing and rear casing Items to check LT AMA SERIES Annex B Exploded View and Parts List of AMA CT B 155 01 155 02 155 03 Outlet armour Front support Front
27. tes either there are air bubbles in the system or cavitation has occurred The weight of the outlet piping should be properly supported to prevent putting excessive stress on the pump see Fig 4 1 A priming piping must be installed if the suction system does not employ Ge positive pressure 1 e upward suction see Fig 4 1 Requirements 3 The flow rate 1n the outlet piping should not exceed 3m sec The ability for each component In the piping system to withstand pressure should be calculated to determine the maximum allowable operating pressure Outlet Piping Priming Upward suction pumps that do not have a self priming cylinder should have a Piping priming piping system AMA SERIES Items to Note Pressure gauge used should be able to read beyond the maximum operating pressure Pressure gauge should be made of material that 1s corrosive resistant otherwise a diaphragm should be used A valve can be installed on the piping that leads to the pressure gauge to facilitate maintenance and to lengthen the gauge s service life During operation if the pressure gauge reading fluctuates either there are air bubbles in the system or cavitation has occurred A check valve should be installed in the following situations Outlet piping is long Head of outlet 1s more than 15m Discharge pressure exceeds 2kg cm and flow rate exceeds 3m sec Two or more pumps share the same outlet piping system To pr
28. the electrical company The following recommendations should also be implemented 1 Power frequency voltage and capacity should strictly follow according to motor specification sheet and name plates 2 Please select the proper non fuse switch NFB according to the rated current of the motor 3 When using the pump for outdoor applications please make sure the switch 1s protected from rain AMA SERIES 4 Keep the electromagnetic contactor MC from a pump with suitable distance and clearly mark warning sign to avoid false start 5 Tags at the end of wires or Diagram shown in the terminal box and method of connection are based on the number wires phases power voltage and mode of start for the motor Be sure to connect the power cable in accordance with name plate for the motor and the connection diagram in the terminal box 6 Select the proper size of wire for power wiring and tighten screws to prevent loosening Table 4 1 lists the reference value and make sure to follow local electrical regulations Table 4 1 Wire diameter and terminal locking torque __ Minimum diameter Locking torque 7 5Hp I0Hp 15Hp 25Hp Be sure not to performing any type of maintenance while the power turns on It may lead to electric shock Power supply and wire connecting work should be performed by DANGER qualified personnel only After wiring be sure to replace the terminal box cover in its original position Failure to
29. ump performance and low flow rate 4 Serious cases may result in dry running anticipated 2 Decoupling of the magnetic drive 1 Motor overloading Viscosity higher than anticipated 2 Decoupling of the magnetic drive 3 Decreased pump performance and reduced flow 1 Corrosion and cracking Wrong pump material selected 2 Rapid corrosion and wearing of bearing 3 Corrosion of the O ring resulting in leakage Inlet pipe not submerged sufficiently 1 Produce high frequency vibrations and noise into the fluid or air sucked into piping 2 Fracturing of the bearing and thrust rings 3 Reduced pump performance 4 Serious cases can lead to dry running 1 Reduced pump performance Si ckets in inlet piping 2 Serious cases can lead to dry running Improper suction resulting 1n low efficiency insufficient flow cavitation or dry running Fluids within pump leaks during shut down Leaking foot valve or inlet piping period resulting in dry running when pump is restarted NPSHa too low resulting 1n cavitation Incorrect System Calculations or Incorrect Pump Selected Parallel pumps improperly installed Improper Piping or Layout AMA SERIES Abnormal Condition Possible Effect Damage Starting the pump without priming Dry running causing damage to pump Low speed or wrong rotation direction Low fluid flow Incorrect motor frequency or voltage Overloading of the motor 1 Low performance a
30. y Pump Head 10 Shutting Down the Pump 1 Close the outlet valve slowly to prevent damage to the pump due to reverse fluid flow water hammer 2 Shut off the pump It should stop gradually If not check the interior of the pump for problems 3 The pump should be checked periodically If the pump 1s used in a cold operating environment relative to the fluid s freezing point the fluid may crystallize even if the pump is shut down for a very short amount of time To prevent crystallization a drain plug should be included in the piping system or a heating system could be used to maintain the temperature during shutdown L 1 AMA SERIES 7 Maintenance and Inspection Daily Inspection Check for oxidation or corrosion of the front casing bracket and base plate Check for leakage of the pump and the piping system Check the pump exterior for any physical damage such as corrosion paint stripped off Check the current and motor loading Check and test run backup pumps regularly to ensure they can function properly when needed Operation 1 Check for irregular sounds and vibrations Check any abnormal overheat on the surface of motor three phase current is imbalanced bearing noise foreign material blocking the vent of fan Check the in tank fluid levels and inlet outlet pressures Table 7 1 Periodic Maintenance 1 The following items should be inspected quarterly referring to table 7 2
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