Homa GRP Series - User Manual

Questions and Answers

D
Donna SantiagoJul 27, 2025
Why my Homa GRP Water Pump will not start?
- D
  Dean NewtonJul 27, 2025
  If your Homa Water Pump won't start, it could be due to a few reasons: * There might be an interruption in the electricity supply, possibly a short circuit or a ground connection in the cable or motor windings. In this case, have a specialist check the motor and wires and replace them if needed. * Fuses, the motor protection switch, or monitoring devices may have been triggered. Have a specialist inspect the connections and correct them, adjust the motor protection switch according to the technical specifications, and reset the monitoring equipment. Also, check that the impeller/propeller runs smoothly, cleaning or freeing it if necessary. * The moisture sensor might have interrupted the power circuit. Refer to the troubleshooting steps for 'Mechanical shaft seal leaks'.
J
Jennifer HamiltonAug 6, 2025
What to do if Homa GRP Water Pump runs but does not pump?
- A
  Andrea BrownAug 7, 2025
  If your Homa Water Pump runs but doesn't pump, here's what you can check: * Make sure there is pumped fluid available by opening the container intake or valves. * The intake might be blocked. Clean the intake, valve, suction port, or intake strainer. * The impeller/propeller could be blocked or obstructed. Switch off the machine, ensure it cannot be switched back on, and free the impeller/propeller. * There may be a defective hose or piping. Replace any defective parts. * If the operation is intermittent, check the control panel.
R
Rachel CrossAug 21, 2025
What to do if mechanical shaft seal leaks in Homa GRP?
- C
  Cory MillerAug 21, 2025
  If the mechanical shaft seal of your Homa Water Pump leaks, and the sealing chamber monitor reports a fault, causing the machine to switch off: * If there is increased leakage when operating with new mechanical shaft seals, change the oil. * If the seal chamber probe is defective, replace the moisture sensors. * If the mechanical shaft seal is defective, replace it after contacting the factory.
E
Eric RobertsNov 1, 2025
What to do if motor protection switch triggers shortly after Homa GRP start-up?
- M
  markolsonNov 1, 2025
  If the motor protection switch triggers shortly after starting your Homa Water Pump, consider these potential causes: 1. The thermal trigger on the motor protection switch may be incorrectly set. Have a specialist compare the trigger setting with the technical specifications and adjust it if necessary. 2. Increased power consumption due to a major voltage drop. Have an electrician check the voltage on each phase and rewire if necessary. 3. Excessive voltage differences on the three phases. Have a specialist inspect the connection and the switching system and correct it as necessary. 4. Incorrect direction of rotation. Swap the U and V power leads. 5. The impeller/propeller is impeded by adhesive material, blockages, and/or solid matter, leading to increased current consumption. Switc...
V
vmarquezNov 10, 2025
Why Homa GRP runs, but not at the stated operating levels?
- M
  Michael FlowersNov 10, 2025
  If your Homa Water Pump is running, but not at the stated operating levels, consider the following: * Check for a blocked intake. Clean the intake, valve, suction port, or intake strainer. * Ensure the valve in the discharge line is fully open. * Inspect the impeller/propeller for blockages. Switch off the machine, secure it against being switched on again, and free the impeller/propeller. * Verify the correct direction of rotation by swapping the U and V power leads. * Check for air in the system. Inspect the pipes, pressure shroud, and/or pump unit, and bleed if necessary. * Ensure the machine isn't pumping against excessive pressure by checking the valve in the discharge line and opening it completely if necessary. * Look for signs of wear and replace worn parts. * Repl...
H
Hannah HessNov 15, 2025
How to fix a noisy Homa GRP that doesn't run smoothly?
- D
  David ThompsonNov 15, 2025
  If your Homa Water Pump is not running smoothly and is noisy, it could be due to several reasons: * The machine may be running in an impermissible operation range. Check the operational data and correct if necessary, and/or adjust the operating conditions. * The suction port, strainer, and/or impeller/propeller may be blocked. Clean these components. * The impeller may be blocked. Switch off the machine, secure it against being switched on again, and free the impeller. * If there are inadmissible levels of gas in the pumped liquid, a defective motor bearing, contact the factory. * For two-phase operation, have a specialist inspect the connection and correct it as necessary. * If the machine is installed with mechanical strain, check the installation and use rubber spacers if n...

Summary

General Information

1.3 Proper Use

Guidelines for correct operation to prevent damage or injury.

Safety

2.1 Instructions and Safety Information

Explains how safety instructions are presented and distinguished.

2.2 General Safety

Outlines essential safety precautions for working with the equipment.

2.3 Operating Personnel

Specifies qualifications and responsibilities for personnel operating the equipment.

2.4 Electrical Work

Covers safety requirements and procedures for electrical installations and maintenance.

2.5 Operating Procedure

Details safe operational practices and responsibilities.

2.7 Operation in an Explosive Atmosphere

Guidelines for operating the pump in potentially explosive environments.

2.9 Pumped Fluids

Discusses considerations for different pumped fluids and their effects.

General Description

3.1 Application

Describes the intended uses and applications of the GRP pumps.

3.3 Construction

Details the primary components and construction of the pump.

3.3.1 Type Label

Explains the information found on the pump's type label.

3.3.2 Motor

Describes the motor's construction, features, and explosion-proof options.

3.3.3 Monitoring Equipment

Lists and explains the various monitoring and safety equipment used.

3.3.4 Sealing; Seal Housing

Details the sealing mechanisms and seal housing design.

3.3.5 Jacketed Pump Option

Discusses the jacketed pump option and cooling requirements.

Package, Transport, and Storage

4.2 Transport

Guidelines for safe and appropriate transportation of the pump.

4.3 Storage

Recommendations for proper storage conditions to maintain pump integrity.

Installation and Initial Commissioning

5.1 General

General precautions and requirements for pump installation.

5.2 Installation

Detailed steps and considerations for installing the pump and accessories.

5.4 Initial Operation

Essential instructions for safely commissioning and operating the pump for the first time.

5.5 Preparatory Work

Tasks to perform before starting the pump, ensuring readiness and safety.

5.6 Electrical

Guidance on electrical connections, wiring, and safety regulations.

5.7 Direction of Rotation

How to check and ensure the correct rotational direction of the pump.

5.8 Motor Protection

Requirements for motor protection devices like thermal relays and circuit breakers.

5.10 Types of Startups

Different methods for starting the pump, including direct and soft start.

Maintenance

6.1 General

General guidelines and precautions for performing maintenance.

6.2 Maintenance Intervals

Recommended schedules for routine maintenance tasks.

6.3 Maintenance Tasks

Detailed procedures for various maintenance checks and tasks.

6.4 Seal Chamber

Instructions for checking and changing oil in the seal chamber.

Repairs

7.1 General

General principles and precautions to follow when performing repairs.

7.2 Changing the Impeller

Step-by-step guide for replacing the pump impeller.

7.3 Spare Parts

How to identify and order genuine HOMA spare parts.

Shutdown

8.3 Restarting after an Extended Period of Storage

Instructions for recommissioning a pump after long-term storage.

Troubleshooting

Connection of Pumps and Mixers

10.1 Power Cables

Details on connecting power cables for different pump versions.

10.2 Control Cables

Information on connecting control cables for monitoring devices.

Homa GRP Series Specifications

General

Category	Water Pump
Protection class	IP68
Insulation class	F
Model	GRP
Phase	Single-phase or Three-phase
Material	Cast iron

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Homa GRP Series - User Manual

Table of Contents

Questions and Answers

Summary

General Information

1.3 Proper Use

Safety

2.1 Instructions and Safety Information

2.2 General Safety

2.3 Operating Personnel

2.4 Electrical Work

2.5 Operating Procedure

2.7 Operation in an Explosive Atmosphere

2.9 Pumped Fluids

General Description

3.1 Application

3.3 Construction

3.3.1 Type Label

3.3.2 Motor

3.3.3 Monitoring Equipment

3.3.4 Sealing; Seal Housing

3.3.5 Jacketed Pump Option

Package, Transport, and Storage

4.2 Transport

4.3 Storage

Installation and Initial Commissioning

5.1 General

5.2 Installation

5.4 Initial Operation

5.5 Preparatory Work

5.6 Electrical

5.7 Direction of Rotation

5.8 Motor Protection

5.10 Types of Startups

Maintenance

6.1 General

6.2 Maintenance Intervals

6.3 Maintenance Tasks

6.4 Seal Chamber

Repairs

7.1 General

7.2 Changing the Impeller

7.3 Spare Parts

Shutdown

8.3 Restarting after an Extended Period of Storage

Troubleshooting

Connection of Pumps and Mixers

10.1 Power Cables

10.2 Control Cables

Homa GRP Series Specifications

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