Liquiflo
Installation, Operation & Maintenance Manual
Poly-Guard
®
Series MAG-DRIVE Gear Pumps
Models P1 thru P9, Close-Coupled
2
Introduction
This manual provides instructions for the installation, operation and maintenance of the Liquiflo Poly-Guard
®
Series Gear Pumps, Models P1, P2, P3, P4, P5, P6, P7, P8 & P9. 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 and maintenance as outlined in this manual.
Thank you for purchasing a Liquiflo product.
LIQUIFLO STANDARD TERMS AND CONDITIONS APPLY UNLESS OTHERWISE SPECIFIED IN
WRITING BY LIQUIFLO.
Table of Contents
1. General Information
5. Maintenance & Repair
1.1 General Instructions . . . . . . . . . . . . . . . . . . . . . . 3
5.1 Work Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2 Pump Specifications . . . . . . . . . . . . . . . . . . . . . . 4
5.2 Removal from System . . . . . . . . . . . . . . . . . . . . . 12
1.3 Model Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.3 Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . 13-15
1.4 Repair Kits & Replacement Parts . . . . . . . . . . . . 6
5.3.1 Cartridge Removal. . . . . . . . . . . . . . . . . 13
1.5 Returned Merchandise Authorization (RMA) . . . 6
5.2.3 Cartridge Disassembly . . . . . . . . . . . . . . 13-14
5.3.3 Outer Magnet Removal . . . . . . . . . . . . . . 15
2. Safety Precautions
5.4 Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 16-24
2.1 General Precautions . . . . . . . . . . . . . . . . . . . . . . 7
5.4.1 Pump Cartridge Assembly . . . . . . . . . . . . 16-21
2.2 Precautions for Magnetic-Drive Pumps . . . . . . . . 7
Assembly of Gear-Shafts . . . . . . . . . . . . 16
Installation of Bearings . . . . . . . . . . . . . 17
3. Pump & Motor Installation
Installation of Wear Plates . . . . . . . . . . . 18-19
3.1 Installation of Pump, Motor & Base . . . . . . . . . . . 8
Installation of Gear-Shafts . . . . . . . . . . . 18
3.2 General Piping Requirements . . . . . . . . . . . . . . . 8
Installation of Inner Magnet . . . . . . . . . . 20-21
3.3 Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation of Containment Can . . . . . . 21
3.4 Strainers & Solids Handling . . . . . . . . . . . . . . . . . 9
5.4.2 Outer Magnet-to-Motor Assembly . . . . . . 22-23
3.5 Pressure Requirements . . . . . . . . . . . . . . . . . . . . 9
Outer Magnet Installation . . . . . . . . . . . 23
3.6 Controlling the Flow . . . . . . . . . . . . . . . . . . . . . . . 9
5.4.3 Motor-to-Pedestal Assembly . . . . . . . . . 24
3.7 Motor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4.4 Cartridge Installation . . . . . . . . . . . . . . . 24
3.8 Motor Hook-Up . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.9 Motor Shaft Direction . . . . . . . . . . . . . . . . . . . . . . 10
Appendix:
A-1
Fastener Torque Specifications . . . . . . . . . . . . . 25
4. Start-Up & Operation
A-2
Pump Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1 Starting the Pump . . . . . . . . . . . . . . . . . . . . . . . 11
A-3
Reference Drawings . . . . . . . . . . . . . . . . . . . . . 27-31
4.2 Operating & Troubleshooting . . . . . . . . . . . . . . . 11
A-4
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . 32-33
