amxseries magnetically driven chemical pump user manual
Contents
1. 725 01 Inlet flange adaptor S21 Bearing Rear casing Rear thrust ring Backup plate erruen Front support shaft Protection ring optional part see Annex C B Aa aa y Impeller EM Motr rr JZ Magnetcapsule Ir O ring According to No AS568 Each type is refer to the sectional drawing 725 02 purea Baza AI J b b RG137 gt an 18 AMX SERIES Annex C Description of ATEX specific marking 1 The ATEX specific marking of pump body without motor is indicated on the name plate 2 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 Ee Il 2 Ge HA T6 Distinctive Community mark Il Equipmentgroup a o o a oo e Where explosive atmospheres caused by gases vapors or mists are concerned Protection type constructional safety Temperature class max permissible surface temperature 85 C When pump is installed in a potentially explosive atmosphere be sure to select an explosion proof motor and make sure both the pump and the motor are suitably rated for the environment 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 grounded or there may be a risk of static electric discharge Never run pump without priming Nev2. Magnetic field hazard AMX 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 could result in CAUTION 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 AMX SERIES 3 Inspecting the Pump Prior to Unpack the Carton Install the Pump 1 Check the pump exterior for any physical damage that may have been incurred during shipping 2 Use a small screwdriver to rotate the impeller of the motor s cooling fan The fan should turn easily If the fan feels
3. Duda ai KO OEE QUALITY b MANAGEMENT MAGNETICALLY DRIVEN CHEMICAL PUMP USER MANUAL S GOIRI Symbols used DANGER WARNING CAUTION Situation where improper handling or operation failure to follow this manual would almost certainly result in death or serious bodily injury Situation where improper handling or operation failure to follow this manual could result in death or serious bodily injury Situation where improper handling or operation failure to follow this manual could result in bodily injury or equipment damage When pump is installed in an environment with a potentially explosive atmosphere strict adherence to our instructions must be followed shown in this manual with the Ex symbol Situation where improper handling or operation or failure to follow instructions in this manual would almost certainly result in death or serious bodily injury AMX SERIES Table of Contents PA CC ee es Pe 2 2 Safety dde i lh 2 3 Inspecting the Pump Prior to Unpack the Carton Install the Pump 3 4 Installation Piping and AAE e A A 4 5 Notes for ASEA D E AEA 8 6 Operating Procedure and NOSTER ZE 1 7 Maintenance and Inspection jg Seige B o AA 12 8 Incorrect Usage and Selection gat GE E saus 14 9 Repair and Warranty lie S a SAMs AAA 15 Annex A Disassembling amp Assembling the AMX POTO rrura 17 Annex B Exploded View and Fun
4. Fig 4 1 Fig 4 2 Bad Piping Designs Gil or gt 2D FEF ih Gu EE d gt 0 5m JO gt 1 5D ia aan k Ee Ea D Diameter gt 1 5D bed GI bo A Ga o Yy Fig 4 3 AMX 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 Inlet piping and connectors should be installed properly to prevent sucking in 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 General Requirements 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 be at least 0 5m or at least twice the pipe diameter belo
5. 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 plate etc are securely fastened 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 6 2 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 6 3 Operating the Pump 1 Shut down the pump immediately in 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
6. pump and check the piping and wiring NOTE Outlet Pressure Inlet Pressure Pump Pressure Pump Pressure kg em Fluid Specific Gravity Pump Head 10 6 4 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 is 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 11 AMX SERIES plug should be included in the piping system or a heating system could be used to maintain the temperature during shutdown 7 Maintenance and Inspection 7 1 Daily Inspection See Table 7 1 Check for oxidation or corrosion of the front casing bracket and base plate Appearance 2 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 for irregular sounds and vibrations 2 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 Check the current and motor loading Check and test run backup pump
7. tight or if there are unusual sounds the interior of the pump may have been damaged during shipping 3 Ifthere 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 4 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 5 Although some motor marked usable for both 50Hz and 60Hz but the impeller size of the pump should be trimmed according to frequency applied Apply under inadequate frequency may cause motor overload use under higher frequency or pump under performance use under lower frequency 6 Nameplate information including motor nameplate and pump nameplate plays an important role for the operation and maintenance of the pump It 1s proposed to re copy data on nameplates and store it securely 7 The flow and head on the nameplate is the rated operating point or the operating point made to customer demand Where Head means Total head Total Head Static Head Dynamic Head VF aV 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 WARNING information Use the pump strict
8. 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 Control Valve flow Always open 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 is pump gt Check Valve gt Control Valve Aud dd A vent should be installed if the horizontal section of the outlet piping is very 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 1 Explosive and inflammable liquids 2 Corrosive and stimulus toxic liquids 3 Liquids could directly harm the human body or detrimental to health 4 Liquids could produce a chemical reaction AMX SERIES 4 4 Wiring The wiring system should be done properly using premium equipment and complying with rules and standards set by the el
9. aces where flammable gas dust or material is used or placed CAUTION Places where corrosive gas is generated Places where the ambient temperature is extremely higher than 40 C or extremely lower than 0 G 4 2 Piping 1 AMX flange is the RF type adjustable flange which can be oriented to match corresponding bolt holes to facilitate piping installation 2 AMX flange screw is either M16 or 5 8 The tightening torque is 5 N m 3 The allowable load of pipe on the pump SUCTION Model Force N Moment N m Rey EE EM My Mn EN JZ 120 120 200 30 50o 30 75 AMX SERIES DISCHARGE Model a Zen ZO Ge X The values in table are reference ones within 40 C 4 3 Notes for Installing the Piping System 1 Outlet Piping 2 Throttle Valve 3 Priming Piping DOI Bad 4 Priming Valve IAE KE ae 5 Check Valve Ei GA bd E 6 Outlet Pressure Gauge 4 Etze bg E HI B 7 Motor O up 0 ae 8 Pump d HEE j Z 9 Inlet Pressure Gauge E N 10 Inlet Piping es bk G 11 Inlet Piping Support oe Tae E 12 Vibration Damper o IE ba Pd GO 7 13 Filter H I 0 01 0 02 slope da Good 14 Inlet Tank 13 p Ld E e Ee eea 15 Foot Valve 14 4 E dize E TT A Eu 15 ZA ten
10. al PPG 0 80 C 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 display CAUTION 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 ma
11. ected 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 system 3 Reduced pump performance 4 Serious cases can lead to dry running Incorrect System Calculations or Incorrect Pump Selected 14 AMX SERIES Abnormal Condition Possible Effect Damage 1 Reduced pump performance be GARAGARRA 2 Serious cases can lead to dry running Parallel pumps improperly installed IZT suction resulting in low efficiency insufficient flow cavitation or dry running Fluids within pump leaks during shut down period resulting in dry running when pump 1s restarted Starting the pump without priming Dry running causing damage to pump Parallel pumps improperly installed Leaking foot valve or inlet piping foot valve or inlet piping Low speed or wrong rotation direction Low fluid flow Low performance and vibrations caused by sucked in air Fracturing of the bearing and thrust rings Dry running Produce vibrations and noise Foreign objects stuck in impeller 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 in cavitation Transfer fluid temp
12. ectrical 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 is protected from rain 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 dio 1 Be sure not to performing any type of maintenance while the power turns on It may lead to electric shock 2 Powersupply and wire connecting work should be performed by qualified DANGER personnel only After wiring be sure to replace the terminal box cover in its original position Failure to do so could result in electrical shock 1 Instal
13. er operate the pump below the minimum recommended flow rate for over minute 19
14. erational 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 AMX is made at factory with vibration below 3 0 mm sec r m s measured at flange edge of bracket and the noise value is below 80dB at rated point Ga UCL GO A a yy Io O a EO GO gt LCL UCL Upper contorl Limit LCL Lower contorl Limit Time Fig 7 1 13 AMX SERIES AMX 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 lead to personal injury 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 No remodeling Remodeling of the pump by the user may resu
15. erature too high 2 Reduced strength of the magnet resulting in decoupling l l i 1 Rapid wearing of the bearing Deformation TEOK Resin fea OOOO 2 Reduced pump performance and fluid flow 1 Produce vibrations and noise Damaged motor bearings 2 Overloads the motor 3 High Motor temperature 2 Overloads the motor 2 May result in fracturing of the impeller shaft Pump s base screws loose Produce vibrations and noise s Reduced pump performance and low flow rate or Blockage of inlet piping or foot valve 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 Low inlet tank fluid level Low flow over extended period of time Improper Operation Improper Maintenance Blockage of the outlet piping 9 Repair and Warranty When a problem arises please 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 15 AMX SERIES 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 co 16 AMX SERIES Annex A Disassembling amp Asse
16. ia Sa rss 18 Annex C Description of ATE X specific OTRO rss 19 AMX 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 rating of the AMX Series pump is dependent on the material selected and motor used Please consult our order specification sheet or contact one of our local representatives to select the best product DANGER for your needs Refer to Annex C for a description of the ATEX markings 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 from equipment modified by the customer Be sure to take special precautions when performing operations if using hazardous explosive or inflammable liquids
17. l 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 is 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 WARNING gt 5 Notes for Operation 5 1 Dry Running 1 Our pump use the transfer fluid as its internal cooling system therefore dry running 8 AMX SERIES 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 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 is operating within the proper temperature range 2 The optimal temperature range for pumping pure water Body materi
18. lt 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 is 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 CAUTION disassembling A small amount of fluid may however remain in the internal parts or pipe fittings WARNING 8 Incorrect Usage and Selection System resistance too high 1 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 in cavitation 1 High frequency vibration and noise NPSHa too low 2 Fracturing of the bearing and thrust rings resulting in cavitation 3 Decreased pump 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 sel
19. ly 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 AMX 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 WARNING 2 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 Install or store the pump 1n the following places with special care and consult with ASSOMA INC or authorized dealer in the near region 1 Pl
20. mbling the AMX Pump A Preparing for Disassembly 1 For personal safety wear protective gear like corrosive resistant aprons and protective eyeglasses during disassembly to prevent injuries caused by spilled chemicals 2 The magnets used in our AMX 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 3 Make marks on corresponding terminals and contact points when disconnect and remove motor wirings It would prevent wrong connections in future application B Notes for assembly 1 Please follow the reverse procedure for disassembly to assemble the pump 2 When pressing the shaft bearing into the impeller make sure the cut edge of the bearing matches the flat edge inside the impeller 3 Before assembly use an adhesive tape to remove all metal fragments or debris that may be on the outside of the magnet housing 4 When fastening the different parts of the pump make sure to fasten the corresponding opposite screws in turn to ensure a uniform tightness 5 After the entire pump is assembled use a small screwdriver to rotate the motor cooling fan to ensure everything 1s installed correctly 6 The tightening torque for the front casing of AMX Series is 110 5 kgf cm 11 0 5N m 17 AMX SERIES Annex B Exploded View and Parts List No
21. s regularly to ensure they can function properly when needed Operation Table 7 1 7 2 Periodic Maintenance 1 The following items should be inspected quarterly referring to table 7 2 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 pumping 2 Contact the distributor particle laden fluids 3 Crystallization or sludge 3 Clean 4 Shaft support loose or deformed 4 Contact distributor 1 Scratch marks or cracks 1 Contact distributor 2 Cracked bearing or crystallization 2 Contact distributor Front and Rear Casing and tear excessively 4 Crystallization and other sludge 4 Clean 5 Foreign objects stuck in impeller 5 Remove the objects 6 Impeller deformed 6 Contact distributor 1 Resistance of three phases and 1 Repair or change if insulation impedance abnormal is found 2 Check amount of lubricant when 2 Keep amount of lubricant using open bearing at proper level Used gasket or o ring even without suffering corrosion may also cause seal failure due to deformation or elastic reduction We strongly suggest to replace the new one when a pump is under repair or 12 AMX SERIES Table 7 2 Time e Gia ta Time to change AMX AMX 220 221 440 441 6 gt as 5 AMX E arin Wear limit Zerren 7 3 Preventive Maintenance Op
22. tter enter the pump it may cause pump damage or failure Turn off the power at once and remove the obstruction CAUTION AMX 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 AMX SERIES pumps Figure 5 1 8 6 SEO S AMX 542 543 545 4 AMX 552 553 555 a _ oo 220 221 653 655 SO AMX 440 441 E 0 0 10 20 30 40 50 60 70 80 T C 5 6 Minimum Flow Our pump uses the pumped fluid as its 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 Unit l min 0 JU 0 AMX 220 22b S f AMXA40 441 TSS 20 30 d AMX 552 553 542 543 20 20 30 40 du 50 0 JU 0 0 0 0 l 2 3 4 5 Table 5 1 Note The above data is based on water For volatile or viscous fluids consult your local distributor 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 10 AMX SERIES 6 Operating Procedure and Notes 6 1 Notes Prior to Starting the
23. urred AMX SERIES Items to Note 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 1f the suction system does not employ positive pressure 1 e upward suction see Fig 4 1 The flow rate in 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 Beane Pinta Upward suction pumps that do not have a self priming cylinder 5 ETE should have a priming piping system 1 Pressure gauge used should be able to read beyond the maximum operating pressure 2 Pressure gauge should be made of material that 1s corrosive resistant otherwise a diaphragm should be used Pressure Gauge 3 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 1 Outlet piping is long 2 Head of outlet is more than 15m Check Valve 3 Discharge pressure exceeds 2kg cm and flow rate exceeds 3m sec d de General Requirements Outlet Piping Two or more pumps share the same outlet piping system To prevent back flow
24. w the liquid surface see Fig 4 4 Inlet Piping 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 e If there are two or more inlet piping in the same tank they should E 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 prevent dry running due to a leaking foot valve 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 A control valve should be installed to make disassembling of the pump easier The valve should only be shut off when the pump is to Control Valve be detached for maintenance or repairs We recommend the use of valves that have the least loss when fully Self Priming Cylinder opened like a gate valve It is generally not recommended to install a filter in front of a Filter pump which can unpredictably increase suction system resistance Ifa filter has to be used it should be cleaned regularly to ensure a smooth flow The material used should be corrosion resistant otherwise a f A pressure gauge diaphragm should be used During operation 1f the vacuum gauge reading fluctuates either there are air bubbles in the system or cavitation has occ
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