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Liquiflo H-Series Installation Operation & Maintenance

Magnetic-drive, close-coupled gear pumps
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MAGNETIC-DRIVE, CLOSE-COUPLED GEAR PUMPS
H-SERIES: Models H1F, H3F, H5R, H5F, H7N, H7R, H7F, H9R & H9F
3-SERIES: Models 31F, 33F, 35R, 35F, 37R, 37F, 39R, 39F & 311F
© Jan. 2016 Liquiflo, All rights reserved
443 North Avenue, Garwood, NJ 07027 USA
TM
H-SERIES & 3-SERIES
Tel: 908-518-0777
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
Fax: 908-518-1847
Document No.: 3.20.074
www.liquiflo.com

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Summary of Contents for Liquiflo H-Series

  • Page 1 & MAINTENANCE MANUAL H-SERIES & 3-SERIES MAGNETIC-DRIVE, CLOSE-COUPLED GEAR PUMPS H-SERIES: Models H1F, H3F, H5R, H5F, H7N, H7R, H7F, H9R & H9F 3-SERIES: Models 31F, 33F, 35R, 35F, 37R, 37F, 39R, 39F & 311F © Jan. 2016 Liquiflo, All rights reserved Document No.: 3.20.074...

  • Page 2: Table Of Contents

    H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F This manual provides instructions for the installation, operation and maintenance of the Liquiflo H-Series & 3-Series gear pumps, mag-drive models H1F, H3F, H5R, H5F, H7N, H7R, H7F, H9R, H9F, 31F, 33F, 35R, 35F, 37R, 37F, 39R, 39F and 311F.

  • Page 3: General Information 3

    General Information General Instructions This manual covers the H-Series Mag-Drive, Close-Coupled Gear Pumps, Models H1F thru H9F; and the 3-Series Mag-Drive, Close-Coupled Gear Pumps, Models 31F thru 39F, and 311F. The materials for construction of the pump are selected based upon the chemical compatibility of the fluid being pumped.

  • Page 4: Pump Specifications

    Pump Dry Lift NPSHR Pump Model Flow Speed ∆P Viscosity Series Units: Gal./Rev. .000276 .000828 .001379 .001930 1750 100,000 .003070 H-Series .004910 10.7 .006140 15.0 .008610 21.5 .01228 .000276 .000828 .001379 .001930 1750 100,000 .004910 3-Series 10.7 .006140 15.0 .008610 21.5...
  • Page 5 Units: ºF ºC ºF ºC PSIG bar (g) H1F, H3F, H5R & H5F 20.7 H-Series H7N, H7R, H7F, H9R & H9F 15.5 31F, 33F, 35R & 35F 20.7 3-Series 37R, 37F, 39R, 39F & 311F 15.5 NOTES: The actual maximum surface temperature depends not on the pump but primarily on the temperature of the fluid being pumped.

  • Page 6: Model Coding

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Table 5: Material Data Component Materials Pump Housing 316 Stainless Steel or Alloy-C Mounting Hardware 18-8 Stainless Steel Mounting Bracket (Pedestal) Cast Iron, Epoxy Painted Motor Frames (C-Face) NEMA 56C 143/145TC &...

  • Page 7: Returned Merchandise Authorization (Rma)

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Returned Merchandise Authorization (RMA) If it is necessary to return the pump to the factory for service: Contact your local Liquiflo distributor to discuss the return, obtain a Returned Merchandise Authorization Number (RMA #) and provide the distributor with the required information.

  • Page 8: General Operation

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F General Operation 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.

  • Page 9: Safety Precautions

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Section 2: Safety Precautions General Precautions • 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. •...

  • Page 10: Pump & Motor Installation

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Section 3: Pump & Motor Installation Installation Location of Pump, Motor & Base Refer to the Hydraulic Institute Standards for installation procedures of the base, pump and motor. 1 The pump inlet should be as close to the liquid source as practical and preferably below it.

  • Page 11: Strainers And Solids Handling

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Strainers and Solids Handling Liquiflo gear pumps have very close internal clearances and are designed to pump relatively clean fluids. The entrance of foreign material could cause damage or rapid wear to the pump components. While occa- sional small particles may not be catastrophic to the pump, the use of a strainer on the inlet will prevent large particulates from entering the pump.

  • Page 12: Motor Direction

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Motor Direction 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.

  • Page 13: Start-Up & Operation

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Section 4: Start Up & Operation Starting The Pump 1 Verify that the pump and motor are suitable for the conditions of service. 2 Verify that all suction and discharge valves are open before starting the pump. 3 Prime the pump if feasible.

  • Page 14: Maintenance & Repair

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Section 5: Maintenance & Repair The pump has internal sleeve 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 for Wear Allowances).

  • Page 15: Pump Disassembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F PUMP DISASSEMBLY Follow the procedure below and refer to the drawings in Appendix 6. 1 Remove the four front housing bolts (27) from the pedestal (16). Pedestal Pinch Point 2 Carefully pull the Cartridge straight out.
  • Page 16 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Retaining Ring 4 Detach the inner magnet (11) from the drive in Outer Groove shaft (20) by removing the outer retaining ring (28). Remove the retaining ring by inserting a pointed tool in the split and prying off.

  • Page 17: Gear-Shaft Disassembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 9 Remove the wear plates (7) and the gear-shaft assemblies. Remove the O-rings (5) from the center housing (21) and discard. Gear-Shaft Assemblies Wear NOTE: Liquiflo Repair Kits come with the gears and Plates shafts preassembled, as shown in Appendix 4.

  • Page 18: Removal Of Bearing Lock Pins

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Removal of Bearings: The bearings for these pumps were designed to have a slip fit into the front and rear housings The Carbon or Sil-Carbide bearings can normally be pulled out by using a hooked tool (see Photos 11a and 11b). Plastic bear- ings, such as Teflon, can also be extracted by using a tap that is slightly larger than the bearing inner diameter (see Photo 11c).

  • Page 19: Removal Of Outer Magnet

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F a) Detach the motor (with outer magnet) from the pedestal (16) by removing four bolts (15). Pedestal 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).

  • Page 20: Pump Assembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 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).

  • Page 21: Installation Of Bearings

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 2 Insert the bearing lock pins (25) into the front housing (8) and rear housing (2). NOTE: If the bearings have not yet been removed from the front and rear housings, refer to Rear Housing Step 12...

  • Page 22: Installation Of Wear Plates

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Install housing O-rings (5) into the racetrack shaped grooves of the center housing (21). NOTE: Do not reuse O-rings. O-rings Place the center housing (21) onto the front housing (8) with orientation as shown.
  • Page 23 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 7 Place two wear plates (7) into position. Relief Grooves NOTE: The relief grooves of the wear plates must face up. This will orient the grooves toward the gears. Wear Plates 8 Insert the gear-shaft assemblies...

  • Page 24: Installation Of Inner Magnet

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 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 oriented on the discharge side of the pump (see Page 20).
  • Page 25 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F c) Tap the retaining ring down and out of the outer groove by using either: [Option A] a rubber mallet and specially made tool (see Appendix 2). [Option B] a rubber mallet and open-end wrench that is slightly larger than the shaft diameter.
  • Page 26 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Inner Magnet Installation Diagrams 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.
  • Page 27 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 16 Slide the inner magnet (11) onto the drive shaft (20) until it contacts the retaining ring in the inner groove. Inner Retaining Magnet NOTE: Install inner magnet with orientation as described on Page 26. Ring 17 Install the second retaining ring (28) into the outer groove.

  • Page 28: B: Outer Magnet-Motor Assembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 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.

  • Page 29: Outer Magnet Installation

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Outer Magnet Installation Diagrams The procedure for installing the outer magnet on the motor shaft is dependent on which motor frame is used with the pump. The four standard cases are described below: NEMA 56C &...

  • Page 30: C: Motor-Pedestal Assembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Part C: Motor-Pedestal Assembly 21 Install the motor (with outer magnet) to the pedestal (16) using four sets of bolts (15) and lock washers (34). NOTE: The C-faces of the motor and pedestal should mate freely and mount flush.

  • Page 31: Appendix 1

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 1: Fastener Torque Specifications Maximum Torque Specifications for 18-8 Stainless Steel Bolts Max Torque Bolt Qty. Function Pump Models Bolt Size Specifications Type (Per Pump) (in-lbs) (N-m) H1F &...

  • Page 32: A-2: Retaining Ring Tool Specifications

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 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.

  • Page 33: A-3: Wear Allowances

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F 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.
  • Page 34 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.
  • Page 35 0.125 0.122 0.375 0.378 1.163 1.158 0.500 0.498 0.250 0.247 0.500 0.503 1.163 1.158 0.500 0.498 0.125 0.122 0.500 0.503 H-Series 1.711 1.705 0.625 0.623 0.312 0.309 0.625 0.628 1.711 1.705 0.625 0.623 0.125 0.122 0.625 0.628 1.711 1.705 0.625 0.623...

  • Page 36: A-4: Pump Parts List

    19 Screws, nuts & lockwashers for cartridge-pedestal assembly (4 sets) 20 Screws & lockwashers for motor-pedestal assembly (4 sets) 21 1/8” NPT plug (1) 22 Pedestal (1) NOTE: For Liquiflo Part Numbers, refer to H-Series or 3-Series Consolidated Bill of Materials (BOM).

  • Page 37: A-5: Gear-Shaft Assembly

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 5: Gear- Shaft Assembly Parts List for Gear-Shaft Assemblies Drive Gear-Shaft Parts Idler Gear-Shaft Parts Parts Quantity Part Quantity Drive Gear Idler Gear Drive Shaft Idler Shaft Retaining Ring Retaining Ring...
  • Page 38 Length Length Ring Grooves Series Units: H1F & H3F 4.71 6.24 1.91 H5R & H5F 5.20 6.68 2.40 6.46 3.81 H-Series H7R & H7F 6.46 7.86 3.81 6.96 8.49 4.31 7.71 9.24 5.06 31F & 33F 4.71 6.24 1.91 35R & 35F 5.20...
  • Page 39 H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 5: Gear- Shaft Assembly (Continued) Gears: The H-Series and 3-Series pumps use spur style gears, as shown below: Keyway Tooth To identify the gears, use the following chart: Gear Identification Chart...
  • Page 40 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 5: Gear- Shaft Assembly (Continued) Gear - Shaft Assembly Procedure Place one retaining ring (28) on a firm rubber mat and then place the shaft over the retaining ring.
  • Page 41 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 5: Gear- Shaft Assembly (Continued) Install the key (23A) and gear (22) on the shaft. NOTE: The gear shown is an H3F or 33F metallic drive gear.

  • Page 42: A-6: Reference Drawings

    Bolt, Adapter Plate (1/2-13 x 1 SHCS) (Not Shown) O-ring, Containment Can Pump Models H7-H9, 37-39 & 311 each have four bearings of equal size. See Page 31 for bolt size. NOTE: For Liquiflo Part Numbers, refer to H-Series or 3-Series Consolidated Bill of Materials (BOM).
  • Page 43 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 6: Reference Drawings (Continued) Pump Exploded View Drawing: Mag-Drive, Close-Coupled NOTE: Pump Models H7-H9, 37-39 & 311 each have four bearings of equal size.
  • Page 44 Bolt, Adapter Plate (1/2-13 x 1 SHCS) (Not Shown) O-ring, Containment Can Pump Models H7-H9, 37-39 & 311 each have four bearings of equal size. See Page 31 for bolt size. NOTE: For Liquiflo Part Numbers, refer to H-Series or 3-Series Consolidated Bill of Materials (BOM).
  • Page 45 Dimensional Data: Mag-Drive Pump Port Size, Port-to-Port Length Base-to- Hole-to- Port Size, Flanged Pump Threaded Threaded Port CL Port CL Models (PP) (BP) (HP) ANSI H-Series 3-Series H1F/H3F 31H/33F 2.68 9.31 4.50 3.06 H5R/H5F 35R/35F 2.44 9.81 4.50 3.31 H7N/H7R 3.32 10.72 4.75...

  • Page 46: A-7: Troubleshooting Guide

    Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 7: Troubleshooting Guide Troubleshooting Guide - Part 1 Problem Possible Cause Corrective Action Verify suction pipe is submerged. Pump not primed Increase suction pressure. Open suction valve.
  • Page 47 Liquiflo Installation, Operation & Maintenance Manual H&3-Series MAG-DRIVE Gear Pumps Models H1F-H9F, 31F-39F & 311F Appendix 7: Troubleshoot Guide (Continued) Troubleshooting Guide - Part 2 Problem Possible Cause Corrective Action Install suction strainer. Limit solids concentration. Abrasives in fluid Reduce pump speed or use larger pump running at lower speed.

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