Liquiflo MAX Series Installation, Operation And Maintenance Manual

Mechanically sealed gear pumps

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INSTALLATION, OPERATION and MAINTENANCE MANUAL

Sealed Models M2, M3 & M4

Liquiflo

443 North Avenue, Garwood, NJ 07027 USA

MAX

MECHANICALLY SEALED GEAR PUMPS

General Information . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pump & Motor Installation . . . . . . . . . . . . . . . . . . . . 5

Start-Up & Operation . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintenance & Repair . . . . . . . . . . . . . . . . . . . . . . . 7-11

Exploded View Reference Drawings . . . . . . . . . . . . 12-13

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . 14-15

SERIES

Sealed Models M5, M6, M7 & M8

Tel: 908-518-0777 Fax: 908-518-1847

Document No.: 3.20.085

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Summary of Contents for Liquiflo MAX Series

Page 1: Table Of Contents
Troubleshooting Guide ..... . . 14-15 © Feb. 2005 Document No.: 3.20.085 Liquiflo 443 North Avenue, Garwood, NJ 07027 USA Tel: 908-518-0777 Fax: 908-518-1847...
Page 2: General Information
Verify that the pump Model Code and Serial Number are stamped on the circular tag on the rear housing of the pump. Verify that the Liquiflo Nameplate is secured to the pump. Verify the Group and Category Codes: Explanation of Nameplate...
Page 3 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Pump Specifications ® Series SEALED Pump Specifications Pump Model Units 1 ¼ 1 ½ Port Size Threaded (NPT/BSPT) or Flanged (ANSI/DIN) ▬ Port Type 316 Stainless Steel ▬...
Page 4: Safety Precautions
® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 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 5: Pump & Motor Installation
1% is not recommended as wear rates will increase to unacceptable levels. Clean the pump and motor periodically to prevent the build-up of dust. NOTE: The Max Series pumps are close-coupled and no alignment procedures between the pump and motor are needed.
Page 6: Start-Up & Operation
® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Start-Up & Operation Start-Up Open all suction and discharge valves before starting the pump. Prime the pump and jog the motor to check the direction of rotation. As viewed from the pump end, a clockwise rotation of the motor will result in fluid discharge to the left.
Page 7: Maintenance & Repair
® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Maintenance & Repair The pump has internal bearings, wear plates, gears, shafts and a mechanical seal that require replacement over time due to wear. Standard repair kits are available to facilitate repair of the pump. Repair kits contain all internal wear parts as well as O-rings, retaining rings, keys, bearing lock pins and housing alignment pins.
Page 8 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Pump Disassembly Follow the procedure below and refer to the Exploded View Drawing on Page 12 for Models M2- M4 or Page 13 for Models M5-M8.
Page 9 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Pump Assembly Follow the procedure below and refer to the Exploded View Drawing on Page 12 for Models M2- M4 or Page 13 for Models M5-M8.
Page 10 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 CAUTION! Before installing the mechanical seal, be certain to remove any burrs or sharp edges on the drive shaft to prevent damaging the Teflon seal wedge. Damage to the Teflon wedge can cause the seal to leak.
Page 11 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Install the coupling key (27) and coupling flange (29) on the drive shaft. Roughly position the flange so that its inside surface is flush with the end of the drive shaft (19) and then lightly tighten the setscrew.
Page 12: Exploded View Reference Drawings
® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 Exploded View Reference Drawings ® Series Sealed Pump – Models M2 thru M4 Item # Description Qty. Item # Description Qty. Idler Shaft O-ring, Seal Seat...
Page 13 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 ® Exploded View of Max Series Sealed Pump – Models M5 thru M8 Note: Pump is shown with Standard Gears & Shafts and Single Internal Mechanical Seal.
Page 14: Troubleshooting Guide
® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 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 15 ® Liquiflo Installation, Operation & Maintenance Manual Series Sealed Pumps Models M2 thru M8 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.
Page 18 ® -SERIES PERFORMANCE DATA Model M2 1 cP Fluid (Water) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1.50 1800 1.25 1800 1500 1.00 1200 0.75 0.50 0.25 DIFFERENTIAL PRESSURE (PSI)
Page 19 ® -SERIES PERFORMANCE DATA Model M3 1 cP Fluid (Water) 1800 1500 1800 1200 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1800 1500 1800 1200 DIFFERENTIAL PRESSURE (PSI)
Page 20 -SERIES PERFORMANCE DATA ® Model M4 1 cP Fluid (Water) 1800 1500 1800 1200 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 2.75 1800 2.50 1800 2.25 1500 2.00 1200 1.75 1.50 1.25 1.00 0.75 0.50 0.25 DIFFERENTIAL PRESSURE (PSI)
Page 21 ® -SERIES PERFORMANCE DATA Model M5 1 cP Fluid (Water) 1800 1500 1800 1200 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI)
Page 22 -SERIES PERFORMANCE DATA ® Model M6 1 cP Fluid (Water) 1.95 1800 1800 1.80 1.65 1500 1.50 1.35 1200 1.20 1.05 0.90 0.75 0.60 0.45 0.30 0.15 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI)
Page 23 ® -SERIES PERFORMANCE DATA Model M7 1 cP Fluid (Water) 2.40 1800 1800 2.25 2.10 1500 1.95 1.80 1.65 1200 1.50 1.35 1.20 1.05 0.90 0.75 0.60 0.45 0.30 0.15 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI)
Page 24 ® -SERIES PERFORMANCE DATA Model M8 1 cP Fluid (Water) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI) 100 cP Fluid (Oil) 1800 1800 1500 1200 DIFFERENTIAL PRESSURE (PSI)

This manual is also suitable for:

Max m2 Max m3 Max m6 Max m7 Max m8 Max m4 ... Show all