[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-653832-105":59,"doc-detail-653832-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","moyno-500-pumps-300-series-motorized-service-manual-design-features-installation-operation-troubleshooting","MOYNO® 500 PUMPS - 300 SERIES MOTORIZED - SERVICE MANUAL - DESIGN FEATURES - INSTALLATION - OPERATION - TROUBLESHOOTING","","Service manual for MOYNO® 500 motorized pumps, covering 300 series models 331, 332, 333, and 344. Specifies construction materials (cast iron/316 SS housing, chrome-plated AISI 416 or 316 rotor/stator components, NBR/EPDM/FPM elastomers) and mechanical seal details. Provides installation guidance (mounting orientation, pre-wetting, piping support, electrical wiring and voltage tolerance), operating rules (self-priming limits, dry-run prohibition, lubrication flow requirement, rotation direction), and safety cautions. Includes pump data tables for ports, voltage ratings, discharge pressures, and temperature limits, plus troubleshooting steps for failure to pump, overloads, noisy operation, seal leakage, and priming issues.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/moyno-500-pumps-300-series-motorized-service-manual-design-features-installation-operation-troubleshooting/653832/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/moyno-500-pumps-300-series-motorized-service-manual-design-features-installation-operation-troubleshooting/653832.png","ImageObject",300,407,{"name":92,"@type":93},"naya.afterrain","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-31","2026-10-25",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What electrical voltage tolerance must be maintained for MOYNO® 500 pumps?","Question",{"text":112,"@type":113},"Voltage variations must not exceed ±10% of the motor nameplate voltage. The troubleshooting section also notes voltage requirements in locked rotor conditions (±10% of nameplate rating).","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the pump achieve self-priming and what limits apply?",{"text":117,"@type":113},"With wetted pumping elements, the pump self-primes with up to 25 feet of suction lift when pipe size matches the port size. Suction lines must be air tight; self-priming varies with fluid viscosity.",{"name":119,"@type":110,"acceptedAnswer":120},"What should be checked if the motor starts but the unit thermally trips?",{"text":121,"@type":113},"Check for excessive discharge pressure and, for 1-phase models, a defective centrifugal switch. Increase motor ventilation and ensure wiring uses no less than #14 wire size.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},653832,1793006158,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},962094248482,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Section:  \nMOYNO® 500 PUMPS Page: 1 of 4  \nDate: March 1, 1998  \nSERVICE MANUAL MOYNO® 500 PUMPS  \n300 SERIES MOTORIZED  \n331, 332, 333, AND 344 MODELS  \nDESIGN FEATURES  \nHousing: Cast iron/316 SS  \nPump Rotor: Chrome plated AISI 416 stainless steel/Chrome  \nplated 316 stainless steel Pump Stator: NBR (Nitrile)  \nSeal: Mechanical (carbon/ceramic)  \nMotor Shaft: AISI 416 stainless steel/ANSI 316 stainless steel  \nMotor: 1/2 HP, 60 Hertz, 1725 rpm, totally enclosed, fan cooled (TEFC) C-Faced, 1 phase 115/230Vor 3 phase 230/460V (other motor options available; consult sales representative)  \nNote: Alternate elastomers available. Refer to Repair/Conversion kit numbers pages 3 and 4.  \nINSTALLATION  \nMounting Position. Pump may be mounted in any position. When mounting vertically, it is necessary to keep bearings above seals to prevent possible seal leakage into bearings.  \nPre-Wetting. Prior to connecting pump, wet pump elements and mechanical seal by adding fluid to be pumped into suction and discharge ports. Turn pump over several times in a clockwise direction to work fluid into pump elements. Piping. Piping to pump should be self-supporting to avoid excessive strain on pump housings. See Table 1 for suction and discharge port sizes of each pump model. Use pipe“dope” or tape to facilitate disassembly and to provide seal on pipe connections.  \nElectrical. Follow the wiring diagram on the motor nameplate or inside the terminal box for the proper connections. The wiring should be direct and conform to local electrical codes. Check power connections for proper voltage. Voltage variations must not exceed ±10% of nameplate voltage. Motor is provided with internal automatic overload protection.  \nTo prevent damage to pump, pump rotation must be clockwise when facing pump from motor end. OPERATION  \nSelf-Priming. With wetted pumping elements, the pump is capable of 25 feet of suction lift with pipe size equal to port size. Be sure suction lines are air tight or pump will not self prime. Self-priming capabilities will vary due to fluid viscosity.  \nDO NOT RUN DRY. Unit depends on liquid pumped for lubrication. For proper lubrication, flow rate should be at least 10% of rated capacity.  \nPressure and Temperature Limits. See Table 1 for maximum discharge pressure of each model. Unit is suitable for service at temperatures shown in Table 2. Storage. Always drain pump for extended storage periods by removing bottom drain plug in pump body.  \nCaution: Suction pressure should never be greater than discharge pressure.  \nTable 1. Pump Data  \n\n| Pump\u003Cbr>Model | Suction\u003Cbr>Port\u003Cbr>(NPT) | Discharge\u003Cbr>Port\u003Cbr>(NPT) | Voltage\u003Cbr>Rating\u003Cbr>(VAC) | Discharge\u003Cbr>Pressure\u003Cbr>(psig) |\n| --- | --- | --- | --- | --- |\n| 331 | 3/4 | 3/4 | See Motor Name\u003Cbr>Plate For\u003Cbr>Voltage Ratings | 150 |\n| 332 | 3/4 | 3/4 | See Motor Name\u003Cbr>Plate For\u003Cbr>Voltage Ratings | 100 |\n| 333 | 3/4 | 3/4 | See Motor Name\u003Cbr>Plate For\u003Cbr>Voltage Ratings | 50 |\n| 344 | 3/4 | 3/4 | See Motor Name\u003Cbr>Plate For\u003Cbr>Voltage Ratings | †30 |\n\n†With 3/4 HP motor, pressure is 40 psig.  \nTable 2. Temperature Limits  \n\n| Elastomer | Temperature Limits |\n| --- | --- |\n| *NBR | 10°-160°F |\n| *EPDM | 10°-210°F |\n| *FPM | 10°-240°F |\n\n*NBR = Nitrile  \nEPDM = Ethylene-Propylene-Diene Terpolymer FPM = Fluoroelastomer  \nPage 2  \nTROUBLESHOOTING  \nWARNING: Before making adjustments, disconnect power source and thoroughly bleed pressure from system prior todisassembly. Failure to do so could lead to  \nelectric shock or serious bodily harm. Failure To Pump.  \n1. Motor will not start: Check power supply. Voltage must be ± 10% of nameplate rating when motor is in locked rotor condition. Check for faulty capacitor on 1 phase Models.  \n2. Motor runs and thermally kicks out: Check for excessive discharge pressure. Check for defective centrifugal switch on 1 phase Models. Increase ventilation to motor. Do not use less than \\#14 wire size.  \n3. Stator torn; possible excessive pressure: Replace stator, ch","cbCaiasHLdFXKU7O","https://ap.wps.com/l/cbCaiasHLdFXKU7O","pdf",240081,"English","# DESIGN FEATURES\n## Housing and components\n# INSTALLATION\n## Mounting position\n## Pre-wetting and piping\n## Electrical connections\n# OPERATION\n## Self-priming and dry-run warning\n## Pressure and temperature limits\n# TROUBLESHOOTING\n## Failure to pump\n## Pump overloads\n## Noisy operation\n## Seal leakage\n## Pump will not prime\n# PUMP DISASSEMBLY\n## Disassembly safety and steps","[{\"question\":\"What electrical voltage tolerance must be maintained for MOYNO® 500 pumps?\",\"answer\":\"Voltage variations must not exceed ±10% of the motor nameplate voltage. The troubleshooting section also notes voltage requirements in locked rotor conditions (±10% of nameplate rating).\"},{\"question\":\"How does the pump achieve self-priming and what limits apply?\",\"answer\":\"With wetted pumping elements, the pump self-primes with up to 25 feet of suction lift when pipe size matches the port size. Suction lines must be air tight; self-priming varies with fluid viscosity.\"},{\"question\":\"What should be checked if the motor starts but the unit thermally trips?\",\"answer\":\"Check for excessive discharge pressure and, for 1-phase models, a defective centrifugal switch. Increase motor ventilation and ensure wiring uses no less than #14 wire size.\"}]","MOYNO® 500 PUMPS - 300 SERIES MOTORIZED - SERVICE MANUAL - DESIGN FEATURES - INSTALLATION - OPERATION - TROUBLESHOOTING | PDF",1792900576,13]