FLYGT 3126.290 User Manual (English)

Questions and Answers:

F
Francisco DayAug 7, 2025
Why FLYGT 3126.290 runs but the motor protection trips?
- J
  jeffreyfloresAug 7, 2025
  If your FLYGT Water Pump motor protection trips, it could be due to several reasons. First, ensure the motor protection is correctly set according to the data plate and cable chart, if applicable. Check if the impeller is difficult to rotate by hand; if so, clean the impeller and the sump, and verify the impeller is properly trimmed. Also, check the fuses and replace any that have tripped. If the fuses are intact, then notify a certified electrician. If there is a malfunction in the overload protection, replace the overload protection. Make sure that the maximum density is 1100 kg/m3 (9.2 lb/US gal).
C
Charles ShortAug 12, 2025
What to do if FLYGT 3126.290 Water Pump delivers too little water?
- C
  Cynthia MartinAug 12, 2025
  If your FLYGT Water Pump isn't delivering enough water, check the following: * If it's a 3-phase pump, transpose two phase leads. * Reset valves set in the wrong positions, replace if necessary, and ensure correct installation according to media flow; confirm all valves open correctly. * Clean the impeller and sump, and ensure the impeller is properly trimmed. * Clean out any obstructions in the pipes to ensure free flow. * Locate and seal any leaks in the pipes and joints. * Replace any worn parts on the impeller, pump, and casing.
H
hollandrobertAug 17, 2025
What to do if FLYGT Water Pump starts and stops in rapid sequence?
- J
  Justin MahoneyAug 18, 2025
  If your FLYGT Water Pump is starting and stopping rapidly, check that the distance between the start and stop levels is sufficient and that the non-return valve(s) work(s) properly. Also, ensure the length of the discharge pipe between the pump and the first non-return valve is sufficiently short. If the self-holding function of the contactor malfunctions, check the contactor connections, the voltage in the control circuit in relation to the rated voltages on the coil, the functioning of the stop-level regulator and whether the voltage drop in the line at the starting surge causes the contactor's self-holding malfunction.
T
tranamandaAug 22, 2025
What to do if FLYGT Water Pump does not stop when a level sensor is used?
- H
  hayesrhondaAug 23, 2025
  If your FLYGT Water Pump continues to run even when a level sensor is used, check that there are no leaks from the piping or discharge connection. Ensure the impeller is not clogged and that the non-return valve(s) are functioning properly. Verify the pump has adequate capacity. Also, clean the level regulators, check their functioning, and inspect the contactor and control circuit; replace any defective items. If the stop level is set too low, raise it.
J
Jessica MaldonadoAug 27, 2025
How to fix too low liquid level in FLYGT 3126.290 Water Pump?
- B
  bmaddenAug 27, 2025
  • Check that the level sensor is set correctly. • Depending on the installation type, add a means for priming the pump, such as a foot valve.

FLYGT 3126.290 Specifications

General

Model	3126.290
Category	Water Pump
Type	Submersible Pump
Voltage	400 V
Frequency	50 Hz
Speed	2900 rpm
Max Head	24 m
Outlet Diameter	80 mm
Impeller Diameter	290 mm
Discharge Size	80 mm

Summary

Installation, Operation, and Maintenance Manual

Introduction and Safety

Introduction

Manual's purpose: Installation, operation, and maintenance information.

Safety

Operator awareness of safety precautions to prevent injury and equipment damage.

Safety Terminology and Symbols

Importance of reading, understanding, and following safety messages and regulations.

Hazard Categories and Electrical Safety

Hazard Categories

Hazard categories use levels or specific symbols to denote risks.

Electrical Hazards

Specific symbol for electrical hazards: crush, cutting, and arc flash.

Environmental Safety

Regulations for waste disposal, liquid handling, and spill cleanup.

User Safety and Product Handling

User Safety

General safety rules, equipment, and procedures for hazardous liquids contact.

Electrical Connections

Electrical connections by certified electricians per regulations.

Hazardous Liquids

Product for hazardous liquids; personnel vaccination & cleanliness are key.

Ex-Approved Products and Warranty

Ex-Approved Products

Special handling for Ex-approved units in explosive atmospheres.

Product and Product Handling Requirements

Requirements for Ex-approved products: operation, maintenance, parts.

Monitoring Equipment and Product Warranty

Monitoring Equipment

Use of condition-monitoring devices like level indicators and temp detectors.

Product Warranty

Warranty coverage conditions, limitations, and liability.

Transportation and Storage

Inspect the Delivery

Inspect package/unit for damage/missing items & file claims.

Transportation Guidelines

Precautions, position, fastening, and lifting for safe transport.

Temperature Ranges

Temperature limits for transport, handling, storage; includes freezing precautions.

Storage and Product Details

Storage Guidelines

Store in covered, dry location; protect from damage.

Product Description

The pump is submersible, driven by electric motor.

Product Features and Specifications

Intended Use

For moving wastewater, sludge, raw & clean water within limits.

Spare Parts

Modifications & use of authorized parts for warranty.

Parts

List of pump components and their descriptions.

Cooling, Connections, and Data Plate

External Cooling

Requirements for using external cooling systems.

Connection Types

Two types of connections for external cooling fluid.

Monitoring Equipment

Details on thermal contacts & optional sensors for pump monitoring.

Product Approvals and Denomination

Approvals

Product approvals for hazardous locations (ATEX, IEC, FM).

Approval Plates

Description of EN, IEC, FM approval plates and their info.

Product Denomination

Reading instruction for product code characters.

Codes and Parameters

Explanation of product code structure & parameter meanings.

Installation

Install the Pump

General precautions & requirements before pump installation.

Hazardous Atmospheres

Special rules for installations in explosive/flammable atmospheres.

Fasteners

Requirements for proper size, material, and tightened fasteners.

Pump Installation Procedures

Install with P-installation

Procedure for P-installation on stationary discharge connection.

Install with S-installation

Procedure for S-installation on base stand in pumped liquid.

Install with T-installation

Procedure for T-installation vertically in dry well.

Electrical Connections and Cabling

Make the Electrical Connections

General precautions & requirements for electrical connections.

Requirements

General requirements for electrical installation & supply notification.

Cables

Requirements for installing cables: condition, bends, radius.

Cable Preparation and Connection

Grounding (Earthing)

Requirements for grounding electrical equipment: continuity & safety.

Prepare the SUBCAB™ Cables

Steps to prepare SUBCAB™ cables: peel sheath and foil.

Connect Motor Cable to Pump

Procedure for connecting motor cable to pump; ensure dryness.

Motor Cable Connection to Starter

Connect Motor Cable to Starter and Monitoring Equipment

Connect motor cable to starter/monitoring equipment; safety notes.

Cable Charts

Description

General connection information and cable charts.

Connections

Wiring diagrams and lead color codes for pump connections.

Pump Installation Checks

T-installation: Bleed Air

Procedure to bleed air from pump in T-installation.

Check Impeller Rotation

Procedure to verify correct impeller rotation direction.

Operation

Precautions

Checks before operation: safety devices, debris removal.

Estimate Zinc Anode Replacement Intervals

Method to estimate zinc anode consumption rate & replacement intervals.

Start the Pump

Steps to safely start pump: oil level & rotation checks.

Maintenance

Precautions

Safety precautions before maintenance: electrical & hazard checks.

Maintenance Guidelines

Tasks for maintenance & reassembly: cleaning, lubrication.

Torque Values

Importance of lubrication for torque; contact for specifics.

Oil Change and Pump Servicing

Screws and Nuts

Torque values for screws/nuts by property class.

Change the Oil

Procedure for draining & refilling pump oil housing.

Service the Pump

Service types (initial, periodical, major overhaul) & intervals.

Pump Inspection and Overhaul

Inspection

Specific items to inspect: cable, power, cabinets.

Major Overhaul

Additional tasks for overhaul: bearing & seal replacement.

Service in Case of Alarm

Actions for alarm sources: FLS or thermal contact.

Impeller Replacement

Replace the Impeller

Required tools and procedures for impeller replacement.

Replace C- or D-Impeller

Steps to remove impeller from pump housing/suction cover.

Install C- or D-Impeller

Procedure for mounting & tightening C/D impeller screw.

F-Impeller Installation

Install F-Impeller

Procedure for mounting & fastening F-impeller onto shaft.

Troubleshooting

Introduction

Safety precautions & guidelines for troubleshooting electrical panels.

Pump Does Not Start

Causes/remedies for pump not starting: alarms, voltage issues.

Pump Does Not Stop

Causes/remedies for pump not stopping with level sensor.

Troubleshooting Pump Operation Issues

Pump Starts-Stops-Starts Rapidly

Causes/remedies for pump rapid start-stop cycling.

Pump Runs, Motor Protection Trips

Causes/remedies for motor protection tripping during operation.

Pump Delivers Little or No Water

Causes/remedies for low/no water delivery: impeller issues.

Troubleshooting Pump Level and Flow

Low Liquid Level

Checks/actions for low liquid level for pump operation.

Technical Reference

Motor Data

Motor specs: type, frequency, supply, starting method.

Application Limits

Limits for liquid temp, density, pH, and immersion depth.

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172 pages

FLYGT 3126.290 User Manual

Table of Contents

Questions and Answers:

FLYGT 3126.290 Specifications

Summary

Installation, Operation, and Maintenance Manual

Introduction and Safety

Introduction

Safety

Safety Terminology and Symbols

Hazard Categories and Electrical Safety

Hazard Categories

Electrical Hazards

Environmental Safety

User Safety and Product Handling

User Safety

Electrical Connections

Hazardous Liquids

Ex-Approved Products and Warranty

Ex-Approved Products

Product and Product Handling Requirements

Monitoring Equipment and Product Warranty

Monitoring Equipment

Product Warranty

Transportation and Storage

Inspect the Delivery

Transportation Guidelines

Temperature Ranges

Storage and Product Details

Storage Guidelines

Product Description

Product Features and Specifications

Intended Use

Spare Parts

Parts

Cooling, Connections, and Data Plate

External Cooling

Connection Types

Monitoring Equipment

Product Approvals and Denomination

Approvals

Approval Plates

Product Denomination

Codes and Parameters

Codes and Parameters

Installation

Install the Pump

Hazardous Atmospheres

Fasteners

Pump Installation Procedures

Install with P-installation

Install with S-installation

Install with T-installation

Electrical Connections and Cabling

Make the Electrical Connections

Requirements

Cables

Cable Preparation and Connection

Grounding (Earthing)

Prepare the SUBCAB™ Cables

Connect Motor Cable to Pump

Motor Cable Connection to Starter

Connect Motor Cable to Starter and Monitoring Equipment

Cable Charts

Description

Connections

Pump Installation Checks

T-installation: Bleed Air

Check Impeller Rotation

Operation

Precautions

Estimate Zinc Anode Replacement Intervals

Start the Pump

Maintenance

Precautions

Maintenance Guidelines

Torque Values

Oil Change and Pump Servicing

Screws and Nuts

Change the Oil