INSTALLATION, OPERATION and MAINTENANCE - firma-web
Contents
1. EI m nM Liquifi Chemical IM Processing Pumps INSTALLATION OPERATION and MAINTENANCE MANUAL ROTOGEAR MAGNETIC DRIVE PUMPS 3 SERIES Models 31F 33F 35R 35F 37R 37F 39R 39F amp 311F MC H SERIES Models H3F HSR HSF H7N H7R amp H7F MC Table of Contents ON e e E ETE a Gee 2 Section l General Information 3 8 Section 2 Safety Precautions 9 Section 3 Pump amp Motor Installation 10 12 Section 4 Start Up amp Operation 13 Section 5 Maintenance amp Repair 14 30 APPENAIN si a o Ee de 31 47 June 2005 Liquiflo All rights reserved Document No 3 20 074 443 North Avenue Garwood NJ 07027 USA Tel 908 518 0777 Fax 908 518 1847 www liguiflo com CE RA Liu OMS o V Lae Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Forward This manual provides instructions for the installation operation and maintenance of the Rotogear 3 amp H Series gear pumps Mag Drive Models 31F 33F 35R 35F 37R 37F 39R 39F 311F H3F HSR H5F H7N H7R amp H7F It is critical for any user to read and understand the information in this manual along with any documents this manual refers to prior to installation and start up Liquiflo shall not be liable for damage or delays caused by a failure to follow the instructions for installation operation and2. H3F H Series SR amp HSF aum ss 6s 31 HIR amp H7F 1 For MCS MCU MCB amp MCV inner magnets 2 For MCA amp MCC inner magnets 39R 5 8 696 849 431 39F 311F Keys Three types of gear keys are used in the pumps High yield HY low yield LY and rectangular For Models 31F thru 37F 311F and H3F high yield keys are used for all gear materials except Teflon low yield keys are used only for Teflon gears Note High yield keys have a lower height than low yield keys For Models 39R 39F and HSR thru H7F rectangular keys are used for all gears To identify the keys use the following chart Key Identification Chart Note Key profiles are shown in actual size VS lt gt m 31F 33F 8 H3F HY 31F 33F 8 H3F LY 35R HY tz VI No 7 SOF HY SOF LY S R 37F amp 311F HY 37R 37F amp 311F LY d ee HOR amp HOF H N H R amp H F 38 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 5 Gear Shaft Assembly Continued Gears The 3 Series and H Series pumps use spur style gears as shown below _ JE To identify the gears use the following chart Gear Identification Chart Gear Outer Gear Inner Gear Length UNITS in S ono in Se 3 Series LI H Series H7N Retaining Rings The retaining rings are used to position the gears on the shafts They should alwa
3. Shaft Coating 0 No Shaft Coating Bare 316 SS Shafts O rings Teflon O rings 7 m V Retaining Rings 0 316 SSRetainingRings BearingPins O Teflon Bearing Pins gt Magnetic Coupling U MCU 75 in Ibs Magnetic Coupling C Options S Single Wall Containment Can NOTE See the Liquiflo Product Catalog or the Liquiflo Website www liquiflo com for complete Model Coding information Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 1 4 Pump Installation During installation of the pump and supporting equipment follow the guidelines given in Section 3 Pay special attention to all cautionary notes in this section 1 5 Start Up Before operating the pump inspect the system as outlined in Section 4 Do not start the pump until the inspection is satisfactory and all safety precautions have been taken 1 6 Operation amp Troubleshooting The successful and safe operation of a pump is not only dependent on the pump but also on each of the system components It is therefore important to monitor the entire pumping system during operation and to perform the necessary maintenance to keep the system running smoothly A normally operating magnetic drive gear pump will deliver a steady pulse less flow with no leakage be relatively quiet and have a predictable flow rate based on the pump speed fluid viscosity and
4. Fastener Torque Specifications Maximum Torque Specifications for 18 8 Stainless Steel Bolts S Torque Function Pump Models Bolt Size ipe po el ications 31F 33F H3F 1032UNFx1 HHCS Pees 35R 35F H5R rousing 37R HIN H7R vadouncx2 HHCS Ts ae A l ssembly 378 H7E 1 4 20 UNC x2 HHCS oa 75 as 39F 311F 1 4 20 UNC x 3 3 4 HHCS Containment 31F thru 39F Can 311F 1 4 28 UNF x 5 8 Assembly H3F thru H7F Pump 31F thru 39F Pedestal 311F 3 8 16 UNC x 1 1 4 HHCS Assembly H3F thru H7F Motor 31F thru 39F Pedestal 311F 3 8 16 UNC x 1 HHCS Assembly H3F thru H7F Motor 31F thru 39F Adapter 311F 1 2 13 UNC x 1 SHCS Assembly H3F thru H7F Adapter 31F thru 39F Pedestal 311F 3 8 16 UNC x 1 HHCS Assembly H3F thru H7F NEMA 56C 56HC 143TC amp 145TC motor frames HHCS Hex Head Cap Screw NEMA 182TC 184TC motor frames SHCS Socket Head Cap Screw 31 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 2 Retaining Ring Tool Specifications The following tool is recommended for the efficient and safe installation or removal of the retaining rings used in the pump It should be manufactured from a hard material such as steel Tool Dimensional Specifications inches Crona For Pump Modes 1D m Tolerance Do Not Chamfer Inside Edges NOTE The retaining ring tool is especially useful when
5. I Slide the retaining ring up the shaft and into outer groove Then pry the retaining ring out of the groove and remove CAUTION Be careful not to damage the shaft NOTE The retaining ring can be dislodged from the outer groove by using a large flat screwdriver and a rigid block as shown Dislodging Retaining Ring from Outer Groove 16 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 8 Remove the four housing bolts 4 and then separate the rear center and front housings 9 Remove the wear plates 7 and the E o a gear shaft assemblies Remove the 4 j Gear Shaft O rings 5 from the center housing 21 Plates CN k Assemblies and discard NOTE Liguiflo Repair Kits come with the gears and shafts preassembled as shown in Appendix 4 If you are using a repair kit to rebuild the pump it is not necessary to separate the gears from the shafts If this is the case skip Step 10 and proceed directly to Step 11 Gear Shaft Disassembly 10 CAUTION Be careful not to damage the drive and idler shafts a Remove one retaining ring 28 from the shaft 1 or 20 NOTE Use special vice jaws made of aluminum bronze brass or other soft material so as not to dent or damage the shaft see photo at right b Separate the gear 6 or 22 and key 23B or 23A from the shaft 17 Liquiflo Installation Operation a
6. Alloy 20 or Alloy C 18 8 Stainless Steel Epoxy Painted Cast Iron Motor Frames C Face NEMA 56C 56HC 143 145TC amp 182 184TC IEC 71 80 90 B5 Flange MCS and MCA Magnets Ceramic MCU MCB MCC and MCV Magnets Samarium Cobalt SmCo Inner Magnet Casing 316 Stainless Steel or Alloy C Note 2 Outer Magnet Casing Carbon Steel Epoxy Magnetic Coupling NOTES 1 Teflon is 25 glass filled PTFE 2 Metallic material will match pump housing material Exception Note 3 3 Alloy 20 pumps will have all metallic internal parts made from Alloy C 1 3 Model Coding A fifteen position Model Code is used to completely describe a specific mag drive pump This code is required when ordering a new pump or a cartridge repair kit or replacement parts for an existing pump The table below describes the Model Code and gives a specific example Table 6 Mag Drive Pump Model Code Description amp Example Code Selection Model 35F 35 Pump Size F Full Capacity 316 SS Housing and Shafts amp NPT Ports Pump Model Size Pump Model Capacity Basic Material amp Port Type Position i 35 ME Drive Gear 6 316SSDrveGear gt gt Idler Gear P PEEK IdlerGear S Wear Plates 2 Carbon Wear Plates 7 _ Bearings 2 CarbonBeaing gt gt gt Outer Magnet Bore Motor Frame 0 5 8 NEMA 56C or 56HC Motor Frame 2 BearingFlush 0 NoBeaingfluh
7. Appendix 7 Troubleshooting Guide Troubleshooting Guide Part 1 Possible Cause Corrective Action Verify suction pipe is submerged Pump not primed Increase suction pressure Open suction valve mm Reverse motor leads or reverse suction Wrong direction of rotation a and discharge piping Valves closed Open all suction and discharge valves Bypass valve open Close bypass valve Tighten connections No discharge Air leak in suction line Apply sealant to all threads Verify suction pipe is submerged Clogged strainer Pump worn or damaged Rebuild pump Stop driver and check temperature and viscosity of fluid Magnetic coupling has decoupled Verify position of outer magnet Stronger magnetic coupling may be needed Increase suction pressure Suction pressure too low Verify suction piping is not too long Fully open any suction valves Insufficient discharge Use larger size pump if required Tighten connections Apply sealant to all threads Inspect gaskets if applicable l Verify suction pipe is submerged operation eae Heat fluid to reduce viscosity Reduce pump speed Heat fluid to reduce viscosity Fluid viscosity higher than specified Reduce pump speed Increase driver horsepower Differential pressure greater than Increase pipe diameter specified Decrease pipe run Excessive power l Gear clearances insufficient for Purchase gears trimmed for the correct consumption a fluid viscosity visco
8. Max ax 3 a G 4 z unis rem rem var mPas m m LPR 3IF 183 1750 69 100000 09 015 001045 33F 548 1750 69 100000 06 046 003134 35R 913 1750 69 100000 06 06 005220 35F 128 1750 69 100000 06 12 007306 3 Series 37R 325 1750 69 100 000 16 18 018586 3m 47 1750 69 100000 16 21 023242 39R 57 0 1750 69 100000 12 18 032592 39F 813 1750 69 100 000 09 43 04648 311F 813 1750 5 5 100 000 09 43 04648 H3F 548 1750 155 100000 06 046 003134 HSR 9 13 1750 15 5 100000 0 6 0 6 005220 W Series MEL RE MM MN NM NM Na na ia Mm A H7R H Series Hi H7 H7 H NOTES ok Max AP Differential Pressure is derated to 125 PSI 8 6 bar for viscosities lt 10 cP mPas 2 Fluid viscosities gt 150 cP mPas should use pumps with trimmed gears to reduce power consumption and increase pump efficiency High viscosity fluids may require larger pumps with trimmed gears operating at lower speeds Consult factory 3 NPSHR and Dry Lift are Specified Max Speed and 1 cP mPas 4 TD Theoretical Displacement is based on new pump operating Max Speed and AP 0 4 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Table 2 Absolute Temperature amp Pressure Ratings Pum M
9. Place the front housing 8 and rear housing 2 on a flat surface with the bearing bores facing up Install the 1 8 NPT plug 9 into the front housing NOTE Standard housings 1 e not containing bearing flush grooves are shown at right Teflon tape should be applied to the threads of the drain plug to prevent leakage Internal Bearing Flush Option Pumps ordered with the Internal Bearing Flush IBF option will have modified front and rear housings as shown at right The purpose of the IBF option is to more effectively lubricate and cool the bearings when pumping Higher Pressure Discharge Side extremely thin or extremely thick liquids When assembling the pump the IBF grooves must be oriented on the higher pressure discharge side of the pump Front Housing 20 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Installation of Bearings into Front and Rear Housings 2 Insert bearings 3A amp 3B into the housing bores while aligning the grooves for the bearing lock pins NOTE Ifthe bearings have not yet been removed from the front and rear housings refer to Step 12 of the disassembly procedure see Page 18 The bearings normally require a light press fit to insert them into the housings A mechanical press can be used to facilitate this process see photos 3 Insert the bearing lock pins 25 into the front and rea
10. WearPlate 4 26 Nut Front Housing 3 8 16 4 8 FrontHousing Bolt Front Housing 3 8 16 x 1 4 HHCS 4 9 Plug W8NPT 1 28 Retaining Ring 6 10 Outer Magnet Assembly 1 29 Nut Housing 11 Inner Magnet Assembly 1 30 Lockwasher Housing 4 12 ContainmentCan 1 31 Lockwasher Front Housing 3 8 4 13 Key Inner Magnet 1 32 Lockwasher C Can 1 4 6 14 Screw Hub 8 32 x 5 8 SHCS 6 33 Hub Outer Magnet 15 Bolt Motor 3 8 16 x 1 HHCS 4 34 Lockwasher Motor 3 8 4 Setscrew Hub 1 4 28 x 3 8 SHSS CP 2 Not Shown 18 Bolt C Can 1 4 28 x 5 8 HHCS 6 36 Bolt Adapter 1 2 13 x 1 SHCS la 19 BE O ring Containment Can Not Shown Pump Models 37 39 311 8 H7 each have four bearings of egual size See Page 31 for bolt size 42 Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Liquiflo Installation Operation amp Maintenance Manual Appendix 6 Reference Drawings Continued Pump Exploded View Drawing 6 LAN l Md oe SMISNOH HIHSYMMIJOT NIH ONIN LIH ez z m z SNISNOH LNOHS 1708 ez ONISNOH LON I A SONIHEJA Nid sz 81 NWO LNSWNIVLNOD 1108 61 NVO INSIWNIY LNOD IMHO LYONS ONIUVJA ve i ze NVO UNOO HIHSVMNJOT ez SNIH DOMINE LJH v T 1 e i x a m ONISNOH L108 v v ONISNOH HYH u Jld H
11. differential pressure across the pump Refer to the performance curves of the specific pump model being operated see Liquiflo Product Catalog or website www liquiflo com If a significant problem is observed during operation the pump should be stopped so that corrective action can be taken The observed problem could have several possible causes and multiple remedies for each cause For help with problem solving refer to the Troubleshooting Guide given in Appendix 7 1 7 Maintenance amp Repair The pump has internal bearings wear plates gears and shafts which require replacement over time due to physical wear The center housing of the pump may also incur physical wear and require replacement see Appendix 3 O rings and retaining rings should always be replaced when rebuilding the pump Standard repair kits are available to facilitate repair of the pump see Appendix 4 A repair kit includes all internal wear parts as well as O rings retaining rings bearing lock pins housing alignment pins and keys The parts not included in a mag drive pump repair kit are the housings front center and rear magnets inner and outer containment can pedestal and hardware bolts nuts and washers Before performing maintenance on the pump review the safety precautions given in Section 2 Removal of the pump from the piping system is covered in Section 5 2 To disassemble the pump follow the procedure in Section 5 3 To replace parts and reassem
12. isolation valve If the fluid contains suspended solids a filter of at least 400 U S Mesh should be installed in the suction line Concentration of solids should be limited to a maximum of 1 Ensure that all safety devices are installed before operating pump Operating Requirements Do not operate the pump without fluid inside it CAUTION Do not run pump dry for more than 30 seconds or damage to internal parts can result The pump should be operated with at least 20 PSI 1 4 bar differential pressure to ensure that internal components are properly lubricated by the pumped fluid Adequate suction pressure must be available for the pump to function properly see NPSHR data on Page 4 Do not operate the pump outside of its design specifications See Pages 4 and 5 Troubleshooting During pump operation inspect for 1 Unusual noise 2 Product leakage 3 Expected suction and discharge pressures 4 Product flow If any problems are encountered with the above items stop the pump and take corrective action For help with troubleshooting refer to Appendix 7 13 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Section 5 Maintenance amp Repair The pump has internal bearings wear plates gears and shafts which require replacement over time due to physical wear The center housing of the pump may also incur physical wear and require re
13. maintenance as outlined in this manual These pumps are not warranted for service other than those specified on the order by Liquiflo applications engineering If it is desirable to use this product for alternative services please call Liquiflo applications engineering or your local Liquiflo distributor Thank you for purchasing a Liquiflo product LIQUIFLO STANDARD TERMS AND CONDITIONS APPLY UNLESS SPECIFIED IN WRITING BY LIQUIFLO Detailed Table of Contents 1 General Information 5 Maintenance amp Repair 1 1 General Instructions 5 1 Work Safety 1 2 Pump Specifications 5 2 Removal from System 1 3 Model Coding 3 3 Pump Disassembly 1 4 Pump Installation Cartridge Removal 1 5 Gear Shaft Disassembly 1 6 Operation amp Troubleshooting Removal of Bearing Lock Pins 1 7 Maintenance amp Repair Removal of Bearings 1 8 Repair Kits amp Replacement Parts Removal of Outer Magnet 1 9 Returned Goods Authorization RGA 5 4 Pump Assembly A Pump Cartridge Assembly Safety Precautions Internal Bearing Flush Option 2 1 General Precautions Installation of Bearings 2 2 Precautions for Magnetic Drive Pumps 9 Installation of Wear Plates Installation of Inner Magnet Pump amp Motor Installation B Outer Magnet Motor Assembly 28 29 3 1 Installation of Pump Motor and Base Outer Magnet Installation 29 3 2 General Piping Requirements C Motor Pedestal Assembly 30 3 3 Gear Pump Requirements D Cartridge Installation 30 3 4 General Motor Re
14. the motor with outer magnet from the pedestal 16 by removing four bolts 15 NOTE The pedestal is shown connected directly to a motor but the pedestal could also be connected directly to the Liquiflo S Adapter P N SADAPT or the Liquiflo Power Frame P N A 620804 Each of these devices can be used to long couple the mag drive pump to the motor If either of these devices are being used the outer magnet will be installed not on the motor shaft but on the shaft of the device See the Liquiflo Product Catalog or the Liquiflo Website for more information on the S Adapter or Power Frame b Loosen the two setscrews 17 on the Outer Magnet hub 33 of the outer magnet 10 Setscrew c Remove the outer magnet from the motor shaft END OF DISASSEMBLY PROCEDURE 19 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 3 4 PUMP ASSEMBLY Follow the procedure below and refer to the drawings in Appendix 6 Part A Pump Cartridge Assembly A Pump Cartridge is a complete mag drive pump less the outer magnet and pedestal see photo at right A cartridge replacement is a convenient way to quickly replace a pump that requires maintenance Pump cartridges are available from the factory and are designated by placing a C in front of the pump model code Example Pump Model Code 35FS6P22100000US Cartridge Model Code C35FS6P22100000US 1
15. A 182 184TC motor frames will be supplied with the adapter plate and adapter mounting bolts The motor must have an enclosure that is compatible with the application conditions If an explosion proof motor is required the temperature code of the motor must be acceptable for the fluid that will be pumped The speed and power output rating of the motor must be sufficient for the conditions of service The power output rating of the motor should exceed the maximum power that will be required by the pump over its operating range 11 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 3 4 2 Motor Hook Up 1 Electrical wiring of the motor should be performed by a certified electrician 2 Follow the recommendations of the motor manufacturer and observe all electrical wiring safety standards 3 The motor supply voltage must match the motor nameplate voltage or serious motor damage or fire can result CAUTION Lock out power to the motor before connecting to power line 3 4 3 Motor Direction The motor shaft is magnetically coupled to the drive shaft of the pump Both shafts will turn in the same direction Because the gear pump is bi directional the pump shaft can turn in either direction to produce flow in either direction The direction of rotation of the motor shaft same as that of the pump drive shaft will determine which side of the pump is the inlet suct
16. Always lock out the power to the pump driver when performing maintenance on the pump Always lock out the suction and discharge valves when performing maintenance on the pump Never operate the pump without safety devices installed Never operate the pump with suction and or discharge valves closed Never operate the pump out of its design specifications Never start the pump without making sure that the pump is primed Never use heat to disassemble pump Inspect the entire system before start up Monitor the system during operation and perform maintenance periodically or as required by the application Decontaminate pump using procedures in accordance with federal state local and company environmental regulations Before performing maintenance on the pump check with appropriate personnel to determine if skin eye or lung protection is required and how best to flush the pump Pay special attention to all cautionary statements given in this manual Failure to observe safety precautions can result in personal injury equipment damage or malfunction Cautionary statements will have the following format CAUTION Statement Precautions for Magnetic Drive Pumps Magnetic drive pumps contain strong magnets which pose health risks Based on this the following must be observed Individuals with cardiac pacemakers should avoid repairs on these units Individuals with internal wound clips metallic wiring or other metallic prosthetic devices shoul
17. Shaft Assembly Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Parts List for Gear Shaft Assemblies Drive Gear Shaft Parts Idler Gear Shaft Parts Quantity Quantity Drive Gear Idler Gear Drive Shaft Idler Shaft Retaining Ring Retaining Ring Key HY Description of Parts Shafts As shown above the pump contains two kinds of shafts the drive shaft and the idler shaft Both shafts have retaining ring grooves and a keyway for positioning the gears The drive shaft also has a set of retaining ring grooves and keyway on one end for the inner magnet The gears are positioned on the shafts using two retaining rings per gear Depending on the pump model some shafts may contain an inner and outer set of grooves to fit both full F and reduced R size gears See diagram below INNER MAGNET KEYWAY GROOVES GEAR KEYWAY a7 INNER MAGNET OUTER GROOVES FOR FULL SIZE GEAR INNER GROOVES FOR REDUCED SIZE GEAR OUTER GROOVES FOR FULL SIZE GEAR INNER GROOVES FOR REDUCED SIZE GEAR Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 5 Gear Shaft Assembly Continued To identify the pump shafts refer to the following chart Shaft Identification Chart of Gear Pump For Shaft Retaining Ses Pump Models Diameter Ring Grooves UNITS 31F 33F 3 Series 35R amp 35F 37R amp 37K
18. YI SNISNOH ONTO s i ONISNOH HJLNJI iz E Jlvld HTM 5 SMNSOOH LNOHJ4 s SNISOOH ONTO vz SNISMOH Nid ve HHS SNH WSs a NVO LNIJWNIYLNOJ fit LAND yi HANI LaWHS 43701 4 UVWJO AJA Gez L3NSYN HJLNO 01 JSN9V1N HALJO SMH ce ANH MZHIS 1 i SNISNOH s INOW j ANH M3425135 i waksvNdoo1 1 1 ONISNOH waszaza 9v NEM unn 92 s nea Ve B PE 43 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 6 Reference Drawings Continued Pump Cutaway View Drawing OOO WOO temi Description Qty Item Descripton Qty Idler Shaft tt 20 rive Shaft S j 1 i 2 RearHousing 1 21 CenterHousing 1 3A Bearing Short 3 22 DriveGear 1 3B Bearing Long 1 23A Key Drive Gear NotShown 1 4 Bolt Housing HHCS 4 23B Key IdlerGear 1 5 O ring Housing 2 24 Pin Housing Alignment 4 6 idlerGer tt 25 Pin Bearinglock 4 7 WearPlate 4 26 Nut Front Housing 3 8 16 4 8 FrontHousing 1 Bolt Front Housing 3 8 16 x 1 HHCS 4 Retaining Ring 6 9 Plug 1 8 NPT 1 28 Retaining Ring 10 Outer Magnet Assembly 1 29 Nut Housing 4 11 Inner Magnet Assembly 1 30 Lockwasher Housing 4 12 ContainmentCa
19. ally with pump ports CAUTION Do not use the pump to support the piping or allow the piping to apply stress to the pump ports This can distort the alignment of the pump housing with internal parts and lead to rapid wear or malfunction 2 DO NOT make final connection of piping to pump until the grout has hardened and the pump and motor hold down bolts have been tightened 3 Piping that handles both hot and cold liquids require proper installation of expansion loops and joints so that thermal expansion of the piping will not cause misalignment 4 Gasket installation and materials must be suitable for the service 5 Piping runs should be designed to minimize friction losses 6 Suction and discharge piping should be the same size or larger than the inlet and outlet ports 7 The piping should be arranged to allow the pump to be flushed and drained prior to the removal of the pump for servicing Valves and unions should be installed to allow the pump to be isolated during maintenance 8 The piping system should be thoroughly cleaned prior to installation of the pump 10 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps 3 3 1 2 3 3 4 1 2 3 4 3 4 1 1 2 3 Models 31 39 311 amp H3 H7 MC Gear Pump Requirements A positive displacement pump should have a pressure relief valve installed in the discharge line The relief valve should be the closes
20. ameter values listed in the above table are based on standard untrimmed parts Parts requiring viscosity or temperature trims will have dimensions based on the application Consult factory 35 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 4 Pump Parts List Repair Kit parts and quantities Drive gear shaft assembly 1 Idler gear shaft assembly 1 Bearings 4 Wear plates 4 Housing alignment pins 4 Bearing lock pins 4 Retaining rings for inner magnet 2 Key for inner magnet 1 O rings for housing 2 0 O ring for containment can 1 mio GO UAM BW N NOTE The gears and shafts come preassembled in a Standard repair kit as shown above These parts can also be purchased separately For the procedure for assembling the gears and shafts see Appendix 5 Other assembly parts and quantities 11 Front housing 1 12 Center housing 1 13 Rear housing 1 14 Inner magnet 1 15 Outer magnet 1 16 Containment can 1 17 Screws nuts and lockwashers for housing assembly 4 sets 18 Screws amp lockwashers for containment can assembly 6 sets 19 Screws nuts amp lockwashers for cartridge pedestal assembly 4 sets 20 Screws amp lockwashers for motor pedestal assembly 4 sets 21 1 8 NPT plug 1 22 Pedestal 1 36 Liquiflo Installation Operation amp Maintenance Manual Appendix 5 Gear
21. assembling the gears on the drive and idler shafts see Appendix 5 It can also be used to facilitate installation of the inner magnet on the drive shaft see Section 5 4 Page 25 32 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 3 Wear Allowances When a pump requires maintenance a convenient way to restore the pump to like new condition is to use a repair kit The repair kit contains all internal wear parts as well as O rings retaining rings bearing lock pins housing alignment pins and keys In some cases only certain parts may need to be replaced The primary wear parts of the pump are the gears Shafts wear plates and bearings The center housing secondary wear part may also incur physical wear by contact with the gears caused by excessively worn bearings Note the center housing is not included in a standard repair kit These wear parts can be reused if they are in acceptable condition O rings and retaining rings should not be reused The following used parts should be inspected and evaluated for reuse based on the specifications given in the Wear Allowances Chart see Page 35 Gears Spur gears should have a uniform tooth profile on both the leading and trailing edges If the outer diameter of the gear is worn pumping performance will degrade Gears with minor wear should be evaluated for reuse by measuring the outer diameter and comparin
22. ble the pump follow the assembly procedure in Section 5 4 When performing maintenance pay special attention to all cautionary notes given in these sections 1 8 Repair Kits amp Replacement Parts Repair kits and replacement parts for the pumps can be purchased from your local Liquiflo distributor Refer to Appendices 4 thru 6 for individual parts information Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 1 9 Returned Goods Authorization RGA If it is necessary to return the pump to the factory for service 1 Contact your local Liquiflo distributor to discuss the return obtain a Returned Goods Authorization Number RGA and provide the distributor with the required information see RGA Record below 2 Clean and neutralize pump 3 Package the pump carefully and include the RGA in a visible location on the outside surface of the box 4 Ship pump to factory freight prepaid C Diarvar Name Z Z Z _OrderDate isomero return Date Item s Returned Serial Number s Reason for Return Fluid s Pumped Ku NOTE Pump must be cleaned and neutralized prior to shipment to the factory Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Section 2 Safety Precautions 2 1 2 2 General Precautions
23. ched to the pump Explanation of ATEX Tag CH a chemical cc Liguifis i A Processin Category Equipment provides a high level of Somes T y protection Explosive atmospheres are 443 North Ave Garwood NJ 07027 likely to occur 7 7 MODEL Equipment provides a normal level of Category 3 protection Explosive atmospheres are ae unlikely to occur KR NE E Record the following information for future reference Model Number Serial Number Date Received Pump Location NOTE By adding a K prior to the pump s Model Code a Repair Kit can be obtained which consists of the following parts drive and idler gears drive and idler shafts wear plates bearings retaining rings keys housing alignment pins bearing lock pins and O rings See Appendix 4 for more information 3 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 1 2 Pump Specifications Table 1A Performance Specifications English System Units Pum Max Max Max Max 3 a 3 4 rem Os cem rem psi a a GPR 3 Series 37R 8 59 1750 100 100 000 52 6 004910 37F 39R 15 1 1750 100 100 000 4 008610 39F 3111F 215 1750 80 100 000 3 14 01228 H3F H5 5F N 537 1750 225 100000 52 6 003070 z EJ JN K NU NE NA KC TE Table 1B Performance Specifications SI System Units Pum Max Max
24. d avoid repairs on these units Strong magnetic fields can cause tools and parts to slam together injuring hands and fingers Strong magnets will attract iron cast iron carbon steel and some types of stainless steel Keep magnets away from credit cards computers computer discs and watches 9 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Section 3 Pump amp Motor Installation 3 1 Installation of Pump Motor and Base Refer to the Hydraulic Institute Standards for proper installation procedures of the base pump and motor Observe the following guidelines 1 The foundation area must be rigid and level for maintaining pump alignment 2 The pump and motor assembly must be securely fastened to the base and the base must be securely attached to the ground 3 The pump inlet should be as close to the liquid source as practical and preferably below it 4 The pump and motor should be accessible for servicing and inspection 5 The pump and motor should be cleaned periodically to prevent the build up of dust NOTE The pump models covered in this manual are close coupled and no alignment procedure between the pump and motor is required 3 2 General Piping Requirements Guidelines for piping are given in the Hydraulic Institute Standards and should be reviewed prior to pump installation 1 All piping must be supported independently and must line up natur
25. e procedure below and refer to the drawings in Appendix 6 Cartridge Removal 1 Remove the four front housing bolts 27 from the pedestal 16 Pedestal 2 Carefully pull the Cartridge straight out CAUTION Do not place hands or fingers between Pedestal and Pump Cartridge NOTE Force must be applied to overcome the magnetic attraction between the outer and inner magnets See Page 20 for information on the Pump Cartridge 3 Remove six screws 18 and separate the containment can 12 from the front housing 8 Discard the containment can O ring 19 Front Housing 15 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 4 Detach the inner magnet 11 from the drive shaft 20 by removing the outer retaining ring 28 Remove the retaining ring by inserting a pointed tool in the split and prying off CAUTION Be careful not to damage the shaft NOTE After removal of the retaining ring any high spots on the end of the shaft must be polished smooth so that free removal of the inner magnet is not inhibited 5 Remove the inner magnet and key 13 from the drive shaft 6 Dislodge the retaining ring 28 from the inner groove on the drive shaft CAUTION Be careful not to damage the shaft NOTE The retaining ring can be dislodged from the inner groove by using a large flat screwdriver and a rigid bar as shown
26. g it to the minimum diameter specification given in the Wear Allowances Chart Gears with obvious major wear such as flattened teeth or other significant wear on the profile should be replaced see photo below Shafts The area of the shaft that is engaged in the bearings will wear over time depending on the service conditions and materials of construction see photos below Hard coated shafts are available to minimize or eliminate wear of the shaft surfaces Worn shafts may allow the gears to contact the center housing and accelerate both gear and center housing wear The shaft journal area should be round and have a minimum diameter as specified in the Wear Allowances Chart Idler Shaft Drive Shaft Areas of Bearing Engagement 33 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 3 Wear Allowances Continued Wear Plates This is a sacrificial part of the pump designed to protect the front and rear housings from wear by continual contact with the sides of the gears Erosion of the wear plates increase clearances causing slip to increase This results in a reduction in pump performance Wear plates should have smooth surfaces and meet the minimum thickness requirements given in the Wear Allowances Chart Note Most Liquiflo wear plates are manufactured with cut outs or relief grooves to minimize hydraulically induced gear separation forces during pu
27. inimum Maximum Maximum Pump Mo P Operating Operating Operating Series Temperature Temperature Pressure TAN 300 225 H Series 300 225 NOTES 1 The actual maximum surface temperature depends not on the pump but primarily on the temperature of the fluid being pumped Temperature class can be controlled with the use of thermal sensors Pump surfaces will be approximately 20 F 7 C above the temperature of the fluid being pumped 2 Pump is designed to operate within the ambient temperature range of 4 F 20 C and 104 F 40 C 3 For pumps with ANSI 1504 RF Flanges the Maximum Operating Pressure Rating of the flange is 285 PSIG within the temperature range of 20 to 100 F Above 100 F derate by 0 29 PSIG F Table 3 Maximum Torque Specifications in lbs Idler Gear Teflon 4 7 10 14 22 27 38 54 54 Idler Gear Carbon 3 9 15 21 28 45 56 79 113 113 Idler Gear Celcon Delrin 4 11 19 26 36 57 71 99 142 142 Idler Gear PEEK 4 12 20 28 38 61 76 107 153 153 Idler Gear Ryton 4 12 20 28 38 61 76 107 153 153 Table 4 Weisht Data HSR i hie Weight of pump with threaded ports excluding motor Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Table 5 Material Data Material s Pump Housing 316 Stainless Steel
28. ion side and which side 1s the outlet discharge side For the pump models covered in this manual the flow direction will be as shown below Idler Gear Idler Shaft OUTLET Drive Shaft Drive Gear Dr pm Cc Counterclockwise Rotation of Motor Shaft Clockwise Rotation of Motor Shaft Fluid will enter the pump at the left side inlet Fluid will enter the pump at the right side inlet and be discharged at the right side outlet and be discharged at the left side outlet 12 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Section 4 Start Up amp Operation 4 1 1 2 3 4 5 6 7 4 2 1 2 3 4 4 3 Precautions Prior to Starting Pump Verify that the pump and motor are suitable for the conditions of service Verify that all suction and discharge valves are open before starting the pump Prime the pump and jog the motor to check the rotation As viewed from the pump end a clockwise rotation of the motor will result in fluid discharge to the left counterclockwise rotation will result in fluid discharge to the right see Page 12 The pump is capable of pulling a dry lift but it is still recommended that the pump be primed prior to starting A pressure relief valve should be installed in the discharge line to protect the pump from any kind of line blockage including the inadvertent closing of an
29. ip 34 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 3 Wear Allowances Continued Wear Allowances Chart Units inches Pump Pump Shafts Wear Plates Series Model O D O D O D O D Thick Thick I D I D a Series 311F 1711 H Series H7N 1 711 1 705 0 625 0 623 0 312 0 309 0 625 0 628 0 77 1711 1705 O D Outer Diameter I D Inner Diameter NOTES _ Photo 1 1 Pump models that are not highlighted in the above table have gears with an even number of teeth The diameter for these gears is measured from the tip of one tooth to the tip of the opposite tooth see Photo 1 This meas urement method gives the true diameter of the gears 2 Pump models that are highlighted in the above table have gears with an odd number of teeth Because no two teeth have tips that coincide with the actual gear diameter this makes the true gear diameter difficult to measure A prac tical field method for determining gear wear is to measure the three point diameter of the gear That is place one jaw of the caliper on the tip of one tooth and the other jaw on the tips of both opposite teeth and record the distance see Photo 2 The highlighted diameter values are based on this measurement method and are less than the true gear diameters For the true nominal gear diameters see the chart on Page 39 3 All di
30. ize Part Number Part Number NEMA S6C or SOHC 56C or 56HC sin in SOMCX 5 SPO00 NEMA 143TC or 4STC SoMcx7 spom X S U A B C or V Magnetic coupling size see Table 3 Page 5 Adapter plate required see Page 29 28 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Outer Magnet Installation The procedure for installing the outer magnet on the motor shaft 1s dependent on which motor frame is used with the pump The four standard cases are described below HUB OUTER MAGNET I NEMA 56C amp 56HC Frames The end of the motor shaft must be flush with the inner surface of the outer magnet s hub See diagram at right 56C S6HC MOTOR II NEMA 143TC amp 145TC Frames The motor shaft must protrude past the inner surface of the outer magnet s hub by 1 16 in 1 6 mm See diagram at right MAGNET III IEC 71 80 amp 90 Frames The outer magnet s hub is positioned by a snap ring installed in the hub The end of the motor shaft must contact the snap ring See diagram at right IEC 71 IEC 80 NOTE The IEC motor must have a B5 Flange as IEC 90 i MOTOR shown to be compatible with the pump mounting bracket IV NEMA 182TC amp 184TC Frames An adapter plate is required to mount the motor to the pedestal The outer magnet s hub is positioned by a snap ring installed in the hub The end of
31. ize compound to the bolts Refer to Appendix 1 for the torque specifications of the fasteners When tightening the housing bolts use a star pattern torque sequence on the fasteners to ensure even compression on the O ring s surface With Teflon O rings repeat this process several times waiting between retightening This is necessary because the Teflon will cold flow and require a certain amount of time to properly seat Continue the process until the bolts no longer require retightening 13 Turn the assembly over and install the containment can O ring 19 into the circular groove on the front housing CAUTION Do not reuse O rings Retaining Rings amp Key Installation of Inner Magnet 14 Install retaining ring 28 onto the drive shaft 20 in the groove that is closest to the front housing inner groove This can be done as follows CAUTION Be careful not to damage the drive shaft during this process a Tap the retaining ring onto the end of the shaft using a rubber mallet Retaining Ring on end of Drive Shaft above Outer Groove 24 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC b Push the retaining ring into the outer groove c Tap the retaining ring down and out of the outer groove by using either A a rubber mallet and specially made tool see Appendix 2 or B a rubber mallet and open end wrench that is slightly
32. larger than the shaft diameter Step 14c Either Method can be used CAUTION Be careful not to scrape or gouge the drive shaft NOTE Polish out any rough marks on shaft using very fine sand paper or polishing cloth V Retaining Ring in Inner Groove 15 Insert key 13 into the drive shaft 20 NOTE The straight edge of the key should be parallel to the drive shaft when installing the inner magnet on the shaft Outer Groove 25 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Inner Magnet Installation Models 31 39 311 amp H3 H7 MC Three kinds of inner magnets can be used in the pumps as shown below The axial positioning of the inner magnet is automatically set by snap retaining rings installed on the drive shaft The snap rings and key serve to lock the inner magnet on the shaft II II MCS MCB amp MCV Inner Magnets The rounded edge of the inner magnet must face the front housing See diagram at right MCU Inner Magnet The hub of the inner magnet must face away from the front housing See diagram at right MCA amp MCC Inner Magnets The counter bore of the inner magnet must face the front housing See diagram at right NOTE These inner magnets require longer drive shafts than those of the other magnets shown above FRONT HOUSING INNER MAGNET COUNTER BORE SHAFT 26 Liquiflo Installa
33. mp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC C Remove the other retaining ring 28 k Idler Gear Drive from the shaft G Shaft Parts ear NOTE One method for removing the retaining ring is shown at right First bridge the shaft with a close fitting open end wrench and then strike the wrench handle with a mallet to dislodge the retaining ring from the groove see photo Removal of Bearing Lock Pins 11 Remove the bearing lock pins 25 from the front and rear housings NOTE Ifthe pins are made of Teflon a pointed tool can be used to extract them as shown If the pins are metallic the bearings should be removed first see Step 12 Rear Housing Removal of Bearings Most bearings for these pumps were designed to have a light press fit into the front and rear housings Removal is generally accomplished by destroying the bearings The bearings can be pulled out using a hooked tool see Photos 12a and 12b Plastic bearings such as Teflon can also be extracted by using a tap that is slightly larger than the bearing inner diameter see Photo 12c 12 Remove the bearings 3A and 3B from the front and rear housings CAUTION Be careful not to damage the housing bores when removing the bearings 18 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Removal of Outer Magnet 13 a Detach
34. mping These relieved wear plates increase pump life by reducing loads on bearings and shafts A typical relieved wear plate is shown below Flat amp smooth surface Relief Grooves Typical Relieved Wear Plate Measuring Wear Plate Thickness Bearings The 3 Series and H Series pumps use sleeve type bearings that are also known as journal bearings These bearings are designed to support the shafts and precisely position the gears inside the housing Worn bearings will eventually allow the rotating gears to contact the center housing causing wear and eventual failure of both of these components See photo at below left for the typical wear pattern of the bearings If any wear of the bearings is observed they should be replaced The Wear Allowances Chart gives the maximum inner diameter that is acceptable for worn bearings Wear on inner surfaces caused by contact with the gears Typical Wear Pattern of Center Housing Center Housing The typical failure mode for the center housing is from contact with the rotating gears caused by extreme wear of the bearings and shafts Evidence of contact or slight wear on the inside surfaces can be expected However if deep grooves or excessive wear is observed the center housing should be replaced See photo at above right for the typical wear pattern of the center housing Reusing a worn center housing will cause pump performance to be lower than expected because of increased sl
35. n 1 31 Lockwasher Front Housing 3 8 4 13 Key Inner Magnet 1 32 Lockwasher C Can 14 6 14 Screw Hub 8 32 x 5 8 SHCS 6 33 Hub Outer Magnet 1 15 Bolt Motor 3 8 16x 1 HHCS 4 34 Lockwasher Motor 3 8 4 Setscrew Hub 1 4 28 x 3 8 SHSS CP 2 Not Shown 18 Bolt C Can 1 4 28 x 5 8 HHCS 6 EE Bolt Adapter 1 2 13 x 1 SHCS a 19 O ring Containment Can od Not Shown Pump Models 37 39 311 amp H7 each have four bearings of equal size See Page 31 for bolt size 44 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 6 Reference Drawings Continued Pump Dimensional Drawing Threaded Ports 4 X 41 DIA THRU See dimensional data from motor manufacturer for C Dimension Dimensional Data Mag Drive Pump Pum Port Size Port to Port M PRI Threaded P Threaded odeli O Mans ti 3 Series H Series in in mm i in in in NE NE NI K NE NI AM IE MN Ma m EV NI Z Z K NA pm Threaded ports are NPT or BSPT Flanges are ANSI 150 RF or DIN PN16 3 Length L is measured from C face of bracket to end of pump s rear housing Add 0 31 inches if pump has Bearing Flush Plugs installed N 45 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC
36. nstall O rings or gaskets without twisting or bending Use star pattern torque sequence on housing bolts during assembly Allow Teflon O rings to cold flow and seat during tightening Torque bolts to specification Use Teflon tape or other suitable sealant Use gaskets compatible with fluid and temperature of the application Only pump chemical fluids that are compatible with the pump housing material Decrease temperature to reduce corrosion rate to acceptable value Flush idle pumps that are used to pump corrosive chemicals Eliminate contaminants in the fluid that can accelerate corrosion wear Abrasives in fluid Discharge pressure too high Excessive noise and vibration Static seal failure caused by improper installation Excessive product l Pump port connections not properly sealed leakage Crevice corrosion of pump housing material 47
37. placement see Appendix 3 O rings and retaining rings should always be replaced when rebuilding the pump 5 1 Work Safety Before performing maintenance review the safety precautions given in Section 2 see Page 9 CAUTION The Magnetic Couplings used in these pumps are extremely powerful Observe the precautions given in Section 2 2 3 2 Removal from System Before servicing prepare the pump as follows CAUTION If the pump was used to move hazardous or toxic fluids it must be flushed and decontaminated prior to removal from the system piping Refer to the Material Safety Data Sheet MSDS for the liquid and follow all prescribed safety precautions and disposal procedures 1 Flush the pump 2 Stop the motor and lock out the electrical panel CAUTION Be certain the pump s motor switch is in the OFF position and the power to the motor is locked out 3 Close the suction and discharge isolation valves A Disconnect the pump from the system piping 5 Drain the containment can by removing the 1 8 NPT plug on the pump s front housing see photo below Location amp Removal of Drain Plug To drain the containment can remove the 1 8 NPT plug that is located near the bottom of the pump s front housing see photo 1 8 NPT Plug 14 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 5 3 PUMP DISASSEMBLY Follow th
38. quirements 3 4 1 Motor Selection Appendix 3 4 2 Motor Hook Up A 1 Fastener Torque Specifications 3 4 3 Motor Direction A 2 Retaining Ring Tool Specifications A 3 Wear Allowances Start Up amp Operation A 4 Pump Parts List 4 1 Precautions Prior to Starting Pump A 5 Gear Shaft Assembly 4 2 Operating Reguirements A 6 Reference Drawings 4 3 Troubleshooting A 7 Troubleshooting Guide Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Section 1 General Information 1 1 General Instructions This manual covers the 3 Series and H Series Mag Drive Close Coupled pumps Models 31 thru 39 311 and H3 thru H7 The materials of construction of the pump are selected based upon the chemical compatibility of the fluid being pumped The user must verify that the materials are suitable for the surrounding atmosphere If the fluid is non conductive methods are available to mechanically ground the isolated shaft This is only necessary if the surrounding atmosphere is extremely explosive or stray static charges are present Upon receipt of your Liquiflo pump A Verify that the equipment has not been damaged 1n transit B Verify that the pump Serial Number is stamped on the pump s rear housing C Verify that the Liguiflo Stainless Steel Nameplate is secured to the pump s housing D For ATEX certification verify that the following Stainless Steel Tag is atta
39. r housings NOTE The pins serve to prevent the bearings from rotating They are normally made of Teflon Metallic pins are available for high temperature applications 4 Insert two housing alignment pins 24 into the front housing as shown Housing Alignment Pins NOTE The pins should have a slip fit into the housing The housing pins serve to accurately align the front center and rear housings 21 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 5 Install housing O rings 5 into the racetrack shaped grooves of the center housing 21 CAUTION Do not reuse O rings 6 Place the center housing 21 onto the front housing 8 with orientation as shown NOTE Make certain the center housing seats properly over the Center Housing housing alignment pins in the front housing Front Housing Installation of Wear Plates Most Liquiflo wear plates are manufactured Relief Grooves with cut outs or grooves to provide liquid relief paths to reduce hydraulically induced gear separation forces that exist during pump operation These forces decrease pump life by placing significant loads on the shafts and bearings To be effective the relief grooves must face toward the gears NOTE Failure to orient the wear plates properly will reduce the operating life of the pump 22 Liquiflo Installation Operation amp Main
40. rly seat Continue the process until the bolts no longer require retightening 21 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Part B Outer Magnet Motor Assembly The axial positioning of the outer magnet on the motor shaft is critical to pump performance Improper positioning can cause the outer magnet to rub against the front housing or produce an axial load on the inner magnet causing premature pump wear Improper positioning can also cause the outer and inner magnets to decouple Refer to the diagrams on Page 29 when positioning the outer magnet 20 Install the outer magnet as follows a Insert motor key into the keyway on the motor shaft b Apply a small amount of anti seize compound to the motor shaft c Align keyway of the outer magnet s hub 33 with the key on the motor shaft d Slide the outer magnet 10 onto the motor shaft and position the hub as shown on Page 29 e Tighten the two setscrews 17 on the hub Outer Magnet amp Pedestal Part Numbers The specific outer magnet and pedestal supplied with the pump is dependent on the motor frame selected the outer magnet also depends on the magnetic coupling size see table below The pump Model Code defines both the Outer Magnet Bore Motor Frame and the Magnetic Coupling see Table 6 Page 6 tadaa NGOC Era Motor Shaft Diameter or Outer Magnet Pedestal Outer m a Bore S
41. see the section on Keys on Page 38 Align the keyway of the gear with the key on the shaft then slide the gear over the key until the gear contacts the retaining ring Retaining Ring in Second Groove 6 While holding the gear in place force the other retaining ring 28 onto the end of the shaft by striking the shaft with the rubber mallet as shown 7 Slide the retaining ring into the Drive Gear first groove This will lock the Shaft Assembly gear on the shaft NOTE As a check pull the gear by hand along the axis of the shaft to make sure it is securely locked Idler Gear into position Shaft Assembly END OF PROCEDURE 41 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 6 Reference Drawings Pump Cross Sectional Drawing a 5 w ee st 7 e C 90 5 6 638 O00000 ME S i ee 2 9 9 Description emi Description Qty 1 IdlerShatt 1 20 iDrive Shaft 4 1 o 2 RearHousing 1 21 CenterHousing 3A Bearing Short 3 22 DriveGear O 1 3B Bearing long 1 23A Key DriveGear 1 4 Bolt Housing HHCS 4 23B Key IdlerGear 1 5 O ring Housing 2 24 Pin Housing Alignment Not Shown 4 6 idlerGecar 1 25 Pin BearingLock NotShown 4 7
42. sity Plastic gear clearance insufficient Purchase plastic gear trimmed for the for fluid temperature correct temperature Rotating parts binding or severely Disassemble pump and replace worn worn parts 46 Loss of suction Air leaks in suction line after satisfactory Increase in fluid viscosity Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 7 Troubleshooting Guide Continued Troubleshooting Guide Part 2 Possible Cause Corrective Action Install suction strainer Limit solids concentration Reduce pump speed or use larger pump running at lower speed e A NARA Use materials of construction that are Rapid pump wear acceptable for fluid being pumped Extended dry running Install power sensor to stop pump Increase pipe diameter Decrease pipe run l Align piping with pump ports a ii Support piping independently of pump Suction and or discharge piping not Anchor per Hydraulic Institute Standards anchored or properly supported Tighten hold down bolts on pump and Base not rigid enough motor or adjust stilts Inspect grout and regrout if necessary Worn pump bearings Replace bearings Replace bearings or motor Increase NPSH available Static seal failure caused by Use O rings or gaskets made of material chemical incompatibility or thermal compatible with fluid and temperature of breakdown the application I
43. t valve to the discharge port of the pump and should bypass the discharge line back to the supply tank The maximum particle size capable of being passed by the pumps is 37 microns When pumping fluids containing solids a filter of at least 400 U S Mesh should be installed in the suction line Concentration of solids should be limited to a maximum of 1 Exceeding 1 can cause the wear rate to increase to an unacceptable level resulting in a rapid decrease in pump performance In addition to solids concentration the specific wear rate also depends on the size shape and hardness of the particles the operating speed and the materials used to construct the pump General Motor Requirements The motor must be compatible with the pump and conditions of the application The motor supply voltage must match the nameplate voltage of the motor The motor should never be operated outside of its design specifications The motor should be inspected periodically and serviced or replaced as required CAUTION Lock out power to the motor before servicing or replacing Motor Selection The motor frame must be compatible with the pump mounting bracket Choices are NEMA 56C 56HC 143TC 145TC 182TC amp 184TC and IEC 71 80 amp 90 B5 flange NEMA 182 184TC motor frames will require an adapter plate P N SP0046 and four adapter mounting bolts P N 641105 to mount the motor to the bracket see Page 29 Note Complete pumps ordered for use with NEM
44. tenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 7 Place two wear plates 7 into position as shown NOTE If the wear plates are relieved the relief grooves must face up see photo This will orient the grooves toward the gears Wear Plates T he Tay Relief Grooves facing up 8 Insert the gear shaft assemblies into the housing as shown NOTE Liquiflo Repair Kits contain the gears and shafts preassembled as shown below If the gears and shafts are not assembled see Appendix 5 for the assembly procedure Drive Gear Shaft Assembly Idler Gear Shaft Assembly 9 Place two wear plates 7 on top of the gears as shown NOTE If the wear plates are relieved the relief grooves must face down toward the gears 10 Insert two housing alignment pins 24 into the center housing 21 Housing Alignment Pins 23 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 11 Place the rear housing 2 on the center housing 21 Rear Housing NOTE Make sure the rear housing seats properly over the alignment pins If the rear housing has an Internal Bearing Flush IBF groove the groove must be on the discharge side of the pump see bottom of Page 20 12 Install four sets of bolts 4 nuts 29 and lockwashers 30 into the housing then tighten the bolts NOTE Apply anti se
45. the motor shaft must contact the snap ring See diagram at right ADAPTER PLATE OUTER MAGNET NOTE Complete pumps ordered for use with NEMA 182 184TC motor frames will be supplied with the adapter plate P N SP0046 and adapter mounting bolts P N 641105 29 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Part C Motor Pedestal Assembly 21 Install the motor with outer magnet to the pedestal 16 using four sets of bolts 15 and lockwashers 34 NOTE The C faces of the motor and pedestal should mate freely and mount flush Refer to Appendix 1 for the torque specifications of the fasteners Part D Cartridge Installation Zz Pinch Point CAUTION Do not place hands or fingers between Pedestal and Cartridge The Outer and Inner Magnets will suddenly pull together with significant force Carefully install the pump cartridge to the pedestal 16 using four sets of bolts 27 nuts 26 and lock washers 31 NOTE Hold the pump cartridge firmly as shown above and then slowly move the containment can inside the outer magnet The faces of the pedestal and cartridge will mount flush Refer to Appendix 1 for the torque specifications of the fasteners END OF ASSEMBLY PROCEDURE 30 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 1
46. tion Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC 16 Slide the inner magnet 11 onto the drive shaft 20 until 1t contacts the retaining ring in the inner groove NOTE Install inner magnet with orientation as described on Page 26 17 Install the second retaining ring 28 into the outer groove as shown Retaining Ring NOTE Use arubber mallet as shown to tap the retaining ring into the outer groove This will lock the inner magnet assembly on the drive shaft 18 Turn the inner magnet 11 by hand to ensure free rotation of the gears NOTE During this check the gears can be viewed thru the ports of the pump see photo Gears visible thru Port 19 Verify that the containment can O ring is installed see Step 13 Page 24 then attach the containment can 12 to the pump housing using six sets of bolts 18 and lockwashers 32 This completes the Pump Cartridge assembly Containment Can Pump Cartridge NOTE Apply anti seize compound to the bolts Refer to Appendix 1 for the torque specifications of the fasteners When tightening the containment can bolts use a star pattern torque sequence on the fasteners to ensure even compression on the O ring s surface With Teflon O rings repeat this process several times waiting between retightening This is necessary because the Teflon will cold flow and require a certain amount of time to prope
47. ys be replaced when repairing the pump g9 39 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 5 Gear Shaft Assembly Continued Assembly Procedure CAUTION Be careful not to damage the shafts 1 Place one retaining ring 28 on a firm rubber mat and then place the shaft over the retaining ring as shown NOTE The pump shaft shown is the drive shaft for a 33F MC pump This shaft has a 3 8 diameter and two gear retaining ring Second Groove grooves see Shaft Identification Chart on Page 38 Retaining Ring 2 Strike the top end of the shaft with a rubber mallet to force the retaining ring onto the bottom end of the shaft as shown 3 Using the retaining ring tool tap the shaft to slide the retaining ring into the first groove NOTE See Appendix 2 for specifications on producing the retaining ring tool 4 Strike the end of the shaft to dislodge the retaining ring from the first groove then slide the retaining ring into the second groove by tapping the shaft Retaining Ring in First Groove 40 Liquiflo Installation Operation amp Maintenance Manual Rotogear Magnetic Drive Pumps Models 31 39 311 amp H3 H7 MC Appendix 5 Gear Shaft Assembly Continued 5 Install the key 23A and gear 22 on the shaft NOTE The gear shown is a 33F metallic drive gear This gear requires a HY type key
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