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SPX FLOW TopGear GP Series - User Manual

SPX FLOW TopGear GP Series
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INSTRUCTION MANUAL
ORIGINAL INSTRUCTIONS
READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
TopGear GP
INTERNAL GEAR PUMPS
A.0500.451 – IM-TG GP/07.02 EN (03/2016)

Table of Contents

Questions and Answers

  • D
    Daniel DuffyAug 17, 2025
    Why SPX FLOW Water Pump has no flow?
    • C
      Christina LoveAug 17, 2025
      If your SPX FLOW Water Pump has no flow, it might not be priming due to several reasons. The suction lift could be too high. Reduce the difference between the pump and suction tank level, or increase the suction pipe diameter, or reduce the length and simplify the suction pipe. Check for air leaks in the suction line and repair them. If the viscosity is very low, increase the pump speed and reduce axial clearance. Ensure the suction strainer or filter is clear. Verify the pump casing is correctly installed. Finally, check the motor's rotation; for 3-phase drivers, switch two connections, or change the suction and discharge opening, but be careful to check the location of the safety relief valve.
  • V
    vreynoldsNov 1, 2025
    What to do if SPX FLOW TopGear GP stalls or has irregular flow?
    • D
      Dana HerreraNov 1, 2025
      If your SPX FLOW Water Pump is stalling or experiencing irregular flow, several issues could be the cause. Check if the liquid level in the suction tank is too low and correct the liquid supply or provide a level switch. The pump output might be too high; if so, reduce the pump speed or install a smaller pump, or install a bypass line with a check valve. Air could be getting sucked in; repair any leaks in the suction line, check or replace the shaft seal, check or provide a quench on the shaft seal, or connect plug Bb to the pump discharge to increase pressure in the sealing box. Cavitation could also be the issue; reduce the difference between the pump and suction tank level, increase the suction pipe diameter, or reduce the length and simplify the suction pipe. Finally, the liquid may be...

Summary

1.3 Safety

1.3.1 General Safety Precautions

Overall safety precautions and warnings for pump operation and maintenance.

1.3.2 Pump Unit Safety Guidelines

Specific safety guidelines relevant to the pump unit during handling and installation.

2.0 Pump Description

2.1 Type Designation Explanation

3.0 General Technical Information

3.2 Operating Principle

Explains how the internal gear pump mechanism functions.

3.17 Shaft Sealing

3.17.1 Packed Gland Sealing

Describes the packed gland (no lantern ring) shaft sealing type.

3.17.2 Packing Ring Materials

3.18 Safety Relief Valve

3.18.1 Valve Selection, Pressure, Heating, and Adjustment

3.19 Installation

3.19.1 General Installation Guidelines

Basic instructions and important considerations for pump installation.

3.19.2 Location, Accessibility, and Stability

3.19.3 Drives and Shaft Rotation

3.19.4 Shaft Rotation Direction

3.19.5 Shaft Rotation with Safety Relief Valve

3.19.6 Piping and Valve Installation

Guidelines for suction/discharge piping, forces, moments, valves, and strainers.

3.19.8 Guidelines for Assembly

3.19.8.1-4 Assembly Procedures

3.19.8.7-8 Guards and Electrical Heating

3.20 Instructions for Start-up

3.20.1-3 Start-up Preparation and Procedure

General start-up, pump cleaning, venting, and filling.

3.20.4 Initial Start-up Checklist

A comprehensive checklist to ensure all steps are completed before starting the pump.

3.20.5-7 Start-up, Shut-down, and Abnormal Operation

Guides for starting, stopping, and handling abnormal pump operations.

3.21 Trouble Shooting

Flow and Priming Issues

Addresses problems like no flow, pump stalling, irregular flow, and insufficient capacity.

Noise, Power, Wear, and Leak Issues

Solutions for pumps that are noisy, consume high power, experience rapid wear, corrosion, or leaks.

3.22 Maintenance Instructions

3.22.1-2 General Prep and Safety

General maintenance principles, safety, preparation, tools, shutdown, and conservation.

3.22.2.6-2.8 Cleaning and Draining Procedures

3.22.4-6 Pull-out Systems and Clearance Adjustment

4.0 Instructions for Assembly and Disassembly

4.1-3 General Service Precautions and Prep

General principles, tools, and preparation for assembly/disassembly.

4.5 Anti-friction Bearings Service

4.6 Relief Valve Service

5.0 Sectional Drawings and Part Lists

SPX FLOW TopGear GP Series Specifications

General IconGeneral
BrandSPX FLOW
ModelTopGear GP Series
CategoryWater Pump
LanguageEnglish

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