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SPX TopGear H Series - User Manual

SPX TopGear H Series
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A.0500.351 – IM-TG H/07.02 EN (10/2015)
TopGear H
INTERNAL GEAR PUMPS
ORIGINAL INSTRUCTIONS
READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
INSTRUCTION MANUAL

Table of Contents

Questions and Answers

  • M
    Melissa MorrisonAug 15, 2025
    Why SPX Water Pump has no flow and is not priming?
    • M
      Matthew DelgadoAug 15, 2025
      The SPX Water Pump might not be priming due to several reasons. The suction lift may be too high, so you should reduce the difference between the pump and suction tank level, increase the suction pipe diameter, or reduce the length and simplify the suction pipe. There could be an air leak in the suction line that needs repair. If the viscosity is very low, increase the pump speed and reduce axial clearance. Also, check if the suction strainer or filter is clogged and clear it if necessary. Ensure the pump casing is correctly installed. Finally, verify the motor's rotation direction, changing connections for 3-phase drivers or swapping the suction and discharge openings, while checking the safety relief valve location.
  • R
    Richard WallaceAug 26, 2025
    Why SPX Water Pump consumes too much power or becomes hot?
    • C
      Clayton WilliamsAug 26, 2025
      If your SPX Water Pump is consuming too much power or getting hot, the pump speed might be too high; reduce it and consider installing a larger pump if necessary. The gland packing could be too tight, so check or replace it. Misalignment of the coupling can also cause this issue, so check and correct the alignment. If the viscosity is too high, increase the axial clearance, heat the pump, reduce the pump speed, or increase the discharge pipe diameter.
  • J
    Jessica BirdAug 28, 2025
    How to fix a noisy SPX Water Pump?
    • M
      Michael HowellAug 29, 2025
      If your SPX Water Pump is too noisy, it could be due to several reasons. The pump speed might be too high; reduce it and consider installing a larger pump if necessary. Cavitation could be occurring, so reduce the difference between the pump and suction tank level, and increase the suction pipe diameter. High back pressure could also be the issue; increase the pipe diameter, reduce the working pressure, and check accessories like filters or heat exchangers. Check and correct the coupling alignment. Vibration of the base plate or pipings can also cause noise; make the base plate heavier and/or fix the base plate/pipe work better. Finally, damaged or worn ball bearings can contribute to the noise; replace them if necessary.
  • H
    Heidi BartonSep 1, 2025
    What causes rapid wear in SPX Water Pump?
    • S
      Samantha EspinozaSep 1, 2025
      Rapid wear in your SPX Water Pump can be caused by several factors. High back pressure can be a culprit, so increase the pipe diameter, reduce the working pressure, and check accessories like filters and heat exchangers. Solid matter in the liquid can also cause wear, so filter the liquid. The pump running dry is another cause; correct the liquid supply, provide a level switch or dry running protection, heat up the liquid, and stop or reduce air sucking. Finally, corrosion can lead to rapid wear, so consider changing the pump materials or application parameters.
  • B
    bradleywrightSep 4, 2025
    What causes motor overloading in SPX Water Pump?
    • S
      Susan LeeSep 4, 2025
      Motor overloading in your SPX Water Pump can stem from several issues. High back pressure might be the cause; increase the pipe diameter, reduce the working pressure, and check accessories like filters and heat exchangers. If the gland packing is too tight, check and replace it. High viscosity can also lead to overloading; increase the axial clearance, heat the pump, reduce the pump speed, or increase the discharge pipe diameter.
  • D
    David WilliamsSep 7, 2025
    What causes rapid wear of the mechanical seal in SPX Water Pump?
    • Q
      qsmithSep 7, 2025
      Rapid wear of the mechanical seal in your SPX Water Pump can be attributed to several factors. If the viscosity is too high, heat the pump or install a double mechanical seal. Bad de-aerating or dry running can also cause this; fill the pump with liquid and check the position of the relief valve or top cover. High temperature can be a factor; reduce the temperature or install a suitable mechanical seal. If the priming period is too long or there's dry running, reduce the suction line, provide dry running protection, and check the maximum allowable dry running speed for the mechanical seal. Finally, if the liquid is abrasive, filter or neutralize it, or install a double mechanical seal with hard seal faces and barrier liquid.
  • P
    Pamela SandersSep 12, 2025
    What to do if SPX Water Pump is leaking?
    • J
      jasonmolinaSep 12, 2025
      If your SPX Water Pump is leaking, it could be due to the gland packing leaking excessively; check or replace the gland packing. Alternatively, the mechanical seal may be leaking, in which case you should replace it.
  • S
    Steven AtkinsNov 17, 2025
    What to do if SPX Water Pump has not enough capacity?
    • E
      Erin JosephNov 17, 2025
      If your SPX Water Pump isn't providing enough capacity, several factors could be responsible. The pump speed might be too low; if so, increase it, but be careful not to exceed the maximum speed and check the NPSHr. Air could be getting into the system; repair any leaks in the suction line, and check or replace the shaft seal. Cavitation might be occurring, so reduce the difference between the pump and suction tank level, and increase the suction pipe diameter. High back pressure could also be the issue; check the discharge pipe, increase the pipe diameter, reduce the working pressure, and inspect accessories like filters or heat exchangers. Ensure the safety relief valve isn't set too low and correct the pressure setting if needed. If the viscosity is too low, increase the pump speed, inst...
  • J
    Jason HernandezNov 21, 2025
    Why does SPX Water Pump stall or have irregular flow?
    • P
      paula21Nov 21, 2025
      If your SPX Water Pump is stalling or experiencing irregular flow, it could be due to several reasons. The liquid level in the suction tank might be too low; correct the liquid supply or provide a level switch. The output may be too high; reduce the pump speed or install a smaller pump, or install a by-pass line with a check-valve. Air could be getting sucked in; repair any leaks in the suction line, check or replace the shaft seal, provide a quench on the shaft seal, or connect plug Bb to the pump discharge to increase pressure in the sealing box. Cavitation might be occurring; reduce the difference between the pump and suction tank level, and increase the suction pipe diameter. Alternatively, the liquid may be vaporizing in the pump due to heating; check the temperature and vapor pressur...

Summary

1.3 Safety

1.3.1 General Safety Precautions

General safety precautions, warnings, and compliance with regulations for pump operation.

1.3.2 Pump Unit Safety

Specific safety instructions for pump units, including handling and installation.

2.0 Pump Description

2.1 Type Designation

Explanation of the pump's type designation code and its meaning.

3.5 Main Characteristics

3.6 Pressure

3.16 Shaft Sealings

3.16.3 Mechanical Seals

General information on GS, GG, GD, and KU/NU mechanical seal types.

3.17 Safety Relief Valve

3.17.1 Pressure Classes

3.18 Installation

3.18.1 General Installation

General instructions and safety warnings for pump installation.

3.18.2 Location Selection

Guidelines for selecting the optimal location for pump installation.

3.19 Start-Up Instructions

3.19.1 General Start-Up

Prerequisites and general instructions before commissioning the pump.

3.19.2 Pump Cleaning

3.19.3 Venting and Filling

3.19.4 Initial Start-Up Checklist

3.19.5 Start-Up Procedure

3.20 Trouble Shooting

3.21 Maintenance Instructions

3.21.1 General Maintenance

Importance of proper maintenance and safety guidelines for qualified personnel.

3.21.2 Preparation for Maintenance

Steps for preparing the work area, tools, and pump before maintenance.

3.21.2.7 Electrical Installation Maintenance

3.21.2.8 Draining Fluid

4.0 Assembly and Disassembly

4.1 General Assembly;Disassembly

Importance of trained personnel and following instructions for assembly/disassembly.

4.3 Preparation for Work

4.5 Anti-Friction Bearings

4.5.2 TG H2-32;H3-32 Bearing Disassembly

4.5.3 TG H2-32;H3-32 Bearing Assembly

4.6 Relief Valve Procedures

4.6.1 Relief Valve Disassembly

Step-by-step procedure for disassembling the safety relief valve.

4.6.2 Relief Valve Assembly

Step-by-step procedure for assembling the safety relief valve.

4.7 Mechanical Seal Procedures

4.7.1 General Mechanical Seal

General safety and preparation instructions for mechanical seal installation.

4.7.2 Mechanical Seal Preparation

Checks and verification before assembling mechanical seals.

5.0 Sectional Drawings & Part Lists

5.1 TG H2-32 & TG H3-32 Parts

5.2 TG H6-40 to TG H360-150 Parts

5.2.5 Shaft Seal Options

5.2.5.3 Single Mechanical Seal GS

6.0 Dimensional Drawings

6.1 Standard Pump Dimensions

6.4 Safety Relief Valves

6.4.1 Single Safety Relief Valve

Diagrams and dimensional data for single safety relief valves.

SPX TopGear H Series Specifications

General IconGeneral
BrandSPX
ModelTopGear H Series
CategoryWater Pump
LanguageEnglish

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