ITT Flygt 3102 User Manual

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Water & Wastewater

Service and Repair Instructions

Flygt 3102

Table of Contents

Questions and Answers:

R
reginajamesAug 9, 2025
What to do if my ITT Water Pump runs but the motor protection trips?
- C
  Christopher ColeAug 9, 2025
  If your ITT Water Pump motor protection trips, consider these potential issues: * The motor protection might be set too low. Adjust it according to the data plate and cable chart, if available. * The impeller may be difficult to rotate. Clean the impeller and the sump, and check that the impeller is properly trimmed. * The drive unit may not be receiving full voltage on all three phases. Check the fuses and replace any that have tripped. If the fuses are intact, contact a certified electrician. * There may be a malfunction in the overload protection. Replace the overload protection.
E
Eric CombsAug 21, 2025
What to do if ITT Water Pump does not stop when a level sensor is used?
- A
  Alexandra AndersonAug 21, 2025
  If your ITT Water Pump doesn't stop when a level sensor is used, here are a few things to check: * The pump might be unable to empty the sump to the stop level. Ensure there are no leaks from the piping or discharge connection, the impeller isn't clogged, the non-return valves are functioning properly, and the pump has adequate capacity. For more help, contact a local ITT service shop. * There could be a malfunction in the level-sensing equipment. Clean the level regulators, check their function, check the contactor and the control circuit, and replace any defective items. * The stop level might be set too low. Raise the stop level.
H
hendersonjosephAug 27, 2025
Why ITT Water Pump starts-stops-starts in rapid sequence?
- J
  Janet WilliamsonAug 27, 2025
  If your ITT Water Pump starts, stops, and starts in rapid sequence, here are potential causes: * The pump may be starting due to back-flow, which refills the sump to the start level again. Ensure the distance between the start and stop levels isn't too small, the non-return valves work properly, and the rinser isn't too long without a non-return valve. * The self-holding function of the contactor might be malfunctioning. 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.

ITT Flygt 3102 Specifications

General

Type	Submersible Pump
Motor Power	1.5 kW
Impeller Type	Vortex
Frequency	50 Hz
Application	Wastewater, sewage
Outlet Size	50 mm
Voltage	400 V

Summary

Service the pump

Intermediate service

Overview of inspection intervals for intermediate service.

Major service

Overview of inspection intervals for major service.

Service in case of alarm

Overview of actions for alarm sources.

Troubleshooting

Introduction

General guidelines for troubleshooting the pump.

The pump does not start

Troubleshooting steps when the pump fails to start.

The pump does not stop when a level sensor is used

Troubleshooting for pump not stopping with level sensor.

The pump starts-stops-starts in rapid sequence

Troubleshooting for rapid start-stop cycles.

The pump runs but the motor protection trips

Troubleshooting when motor protection trips.

The pump delivers too little or no water

Troubleshooting steps for low or no water delivery.

Technical Reference

Tools

List of tools required for service and repair.

List of tools

Detailed list of tool part numbers and their use.

Introduction and Safety

Safety

General safety warnings and cautions for operation and maintenance.

Ex-approved products

Personnel requirements and handling for Ex-approved units.

ATEX guidelines

Compliance and guidelines for ATEX-compliant equipment.

Product Description

The data plate

Explanation of information on the pump's data plate.

Approvals

Description of EN and FM approvals for explosion-proof products.

Installation

General precautions

Electrical hazard warnings and general installation precautions.

Earthing (Grounding)

Electrical hazard warnings and procedures for earthing equipment.

Cable charts

Wiring diagrams and color codes for pump cable connections.

Sensor-connection

Wiring diagrams for thermal contacts and level sensors.

Maintenance

Precautions

Safety precautions to follow during maintenance.

Change the oil

Procedure for changing the pump oil.

Empty the oil

Steps to safely drain the oil from the pump.

Fill with oil

Disassemble the pump

Remove the mechanical seal

Remove the outer mechanical seal

Remove the inner mechanical seal: Griploc

Assemble the pump

Install the inner mechanical seal: Griploc

Install the outer mechanical seal: Griploc

Replace the impeller

Replace the C- or D-impeller

Install the C- or D-impeller

Replace the F-impeller

Install the F-impeller

Replace the M-impeller

Install the M-impeller

Adjust the impeller

Replace the N-impeller

Install the N-impeller

Requirements for Ex-approved products

Basic requirements

Personnel, spare parts, and dimension requirements for Ex-products.

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