Xylem LOWARA e-SV Series

Other manuals for Xylem LOWARA e-SV Series

Installation, Operation And Maintenance Manual48 pages

Questions and Answers

A
Adrian MooreAug 17, 2025
What to do if my Xylem LOWARA e-SV Water Pump doesn't start?
- B
  bradley81Aug 17, 2025
  If your Xylem Water Pump isn't starting, several factors could be at play. First, ensure that the power supply hasn't been cut off; if it has, restore it. Another potential cause is the thermal overload protection of the motor being triggered; in this case, reset the thermal overload protection on either the control panel or the unit itself. Also, check if the device detecting the absence of liquid or minimum pressure has been activated, and if so, top up the liquid or restore minimum pressure. Finally, inspect the power supply cable for damage and replace it if necessary. If your pump has a capacitor, it may be faulty and need replacement. In some cases, the control panel or the motor itself may be faulty, requiring you to check, repair, or replace them.
L
Lisa LoveAug 19, 2025
How to troubleshoot a Xylem Water Pump that does not start?
- R
  Robert GonzalezAug 19, 2025
  If your Xylem Water Pump does not start, several factors could be the cause. First, ensure that the power supply has not been cut off; if it has, restore it. Second, the thermal overload protection of the motor may have been triggered. If so, reset the thermal overload protection on the control panel or the unit. Another potential cause is that the device detecting the absence of liquid or minimum pressure has been activated; in this case, top up the liquid or restore minimum pressure. If your pump has a capacitor, it could be faulty and need replacement. Lastly, the control panel or the motor (coil) itself might be faulty, requiring a check, repair, or replacement.
M
Mark BuckleyAug 22, 2025
Why does the differential protection device (RCD) activate on my Xylem Water Pump?
- M
  Michael AdamsAug 22, 2025
  The differential protection device (RCD) on your Xylem Water Pump might be activating due to a motor leak. In this case, you should check, repair, or replace the motor. It could also be due to an unsuitable type of differential, so verify that the differential is the correct type.
J
Jeffery HoganAug 27, 2025
Why is there little or no flow rate when my Xylem LOWARA e-SV is running?
- M
  Matthew MooreAug 27, 2025
  If your Xylem Water Pump runs but produces little to no flow, several issues could be the cause. First, check if the motor is turning in the wrong direction and correct it if necessary. Incorrect priming, indicated by air bubbles in the suction pipe or unit, requires repeating the priming procedure. Cavitation could also be the culprit, so increase the NPSH2 available in the system. Additionally, inspect the check valve and foot check valve for being locked in a closed or partially closed position, and replace them if faulty. Ensure the discharge pipe is not throttled by removing any throttling. Finally, check for and remove any clogging in the piping or unit.
K
Kara BerryAug 30, 2025
Why does my Xylem LOWARA e-SV never stop running (automatic start/stop)?
- C
  Charles MorrisAug 30, 2025
  If your Xylem Water Pump never stops in automatic start/stop mode, several factors could be responsible. The required flow rate might be greater than expected, so try reducing it. Leaks in the discharge pipe could also be the cause; eliminate any leaks. Ensure the motor isn't turning in the wrong direction; if it is, correct it. Check for pipes, on-off valves, or filters clogged with impurities and remove them. Also, the starter (pressure switch, sensor, etc.) might be set incorrectly or be faulty, needing adjustment or replacement. Finally, the issue might be related to low flow rate.
K
Kelly NormanSep 2, 2025
What causes excessive noise and/or vibrations in my Xylem LOWARA e-SV?
- K
  Kenneth RiosSep 2, 2025
  Excessive noise and vibrations in your Xylem Water Pump can stem from several causes. Cavitation is a potential issue, so increasing the NPSH3 available in the system may help. Check the anchoring to the ground to ensure it's suitable. Resonance could also be a factor, so inspect the installation. If anti-vibration joints are missing, install them on the suction and discharge sides of the unit. Foreign bodies within the unit should be removed. Worn or faulty motor bearings require replacement. If the unit doesn't turn freely due to a mechanical fault, professional testing may be needed.
K
Keith CampbellSep 4, 2025
Why does my Xylem Water Pump start up too frequently (automatic start/stop)?
- S
  Steven WiseSep 5, 2025
  If your Xylem Water Pump starts up too frequently in automatic start/stop mode, several factors could be the cause. Incorrect priming, leading to air bubbles in the suction pipe or unit, requires repeating the priming procedure. Check the check valve and foot check valve for being locked in a closed or partially closed position; replace them if necessary. The starter (pressure switch, sensor, etc.) might be set incorrectly or be faulty, needing adjustment or replacement. Also, the expansion vessel could be missing pre-charge, be undersized, or not installed at all; pre-charge it, replace it with a suitable one, or install one. In some cases, the unit may be oversized.
S
Samantha McbrideSep 7, 2025
What should I do if my Xylem Water Pump is leaking?
- C
  Charles BauerSep 8, 2025
  If your Xylem Water Pump is leaking, the issue likely involves the mechanical seal. A worn mechanical seal should be replaced, or you can fit one with harder seal faces. If the mechanical seal is damaged due to thermal shock from air bubbles, replace it. A defective mechanical seal should also be replaced. If the mechanical seal is damaged due to the liquid's temperature being outside the rated limits, replace it with a suitable alternative. Lastly, if the mechanical seal is damaged due to chemical incompatibility with the liquid, replace it with one that is chemically compatible.
A
alvarezjosephSep 12, 2025
Why is the differential protection device (RCD) activated on my Xylem Water Pump?
- S
  Sonya CruzSep 12, 2025
  If the differential protection device (RCD) is activated in your Xylem Water Pump, it could be due to a motor leak, in which case you should check, repair, or replace the motor. Another possible cause is an unsuitable type of differential, so verify that the differential is appropriate.
J
John OlsenSep 13, 2025
What to do if Xylem LOWARA e-SV Water Pump turns in the opposite direction when switched off?
- C
  Christine LambertSep 13, 2025
  If your Xylem Water Pump turns in the opposite direction when switched off, the check valve or foot check valve may be faulty and require replacement.

Xylem LOWARA e-SV Series Specifications

General

Brand	Xylem
Model	LOWARA e-SV Series
Category	Water Pump
Language	English

Summary

Introduction and Safety

Introduction

Provides manual scope for installation, operation, and maintenance.

Safety

Details danger levels, safety symbols, and user safety guidelines.

Danger levels and safety symbols

Explains hazard levels and associated safety symbols for risk avoidance.

User safety

Focuses on safe usage by qualified users and specific instructions.

Protection of the environment

Covers disposal of packaging, product, and measures for fluid leaks.

Sites exposed to ionizing radiations

Addresses radiation hazards and necessary safety measures.

Handling and Storage

Handling of the packed unit

Provides warnings and guidelines for handling the unit during transport and storage.

Unit inspection upon delivery

Details how to inspect the unit upon delivery and unpack it safely.

Unit handling

Offers guidelines and warnings for lifting and handling the unit safely.

Storage

Specifies conditions and procedures for storing the unit, both packed and long-term.

Technical Description

Designation

Describes the product as a multistage vertical centrifugal pump unit.

Data plate

Explains the information found on the unit's data plate for various models.

Identification code

Details the coding system used to identify specific pump unit configurations.

Names of the main components

Illustrates and lists the main components of the pump unit with their respective numbers.

Intended use

Outlines the approved applications and types of liquids for the pump unit.

Improper use

Warns against prohibited uses and provides examples of improper installation and use.

Use in water distribution networks for human consumption

Provides specific warnings for using the unit in potable water systems.

Special applications

Advises contacting the manufacturer for special applications or specific liquid types.

Installation

Precautions

General precautions before starting installation, emphasizing safety and technician requirements.

Assembly of the motor

Step-by-step instructions for assembling the motor to the pump unit.

Mechanical installation

Guidelines for physically installing the unit, including foundation and fastening.

Installation area

Specifies requirements for the installation area, including air clearance.

Permitted positions

Illustrates the allowed and disallowed installation orientations for the unit.

Installation on concrete foundation

Details requirements for installing the unit on a concrete foundation.

Fastening of the unit

Provides instructions on how to securely fasten the unit to its foundation.

Reducing vibrations

Offers advice on minimizing vibrations caused by the unit and piping.

Hydraulic connection

Covers the connection of the pump unit to the hydraulic system.

Guidelines for the hydraulic system

Provides diagrams and guidelines for setting up the hydraulic system.

Forces and torques applicable to the flanges

Lists maximum allowable forces and torques for piping connections to flanges.

Electrical connection

Details the procedures and safety precautions for electrical connections.

Ground

Emphasizes the importance of proper grounding for electrical safety.

Guidelines for electrical connection

Provides general guidelines for connecting the unit to the power supply.

Guidelines for the electrical control panel

Specifies requirements for protecting the motor and control panel.

Guidelines for the motor

Offers guidance for motors, especially single-phase types, and their protection.

Operation with frequency converter

Explains how to operate the unit with a frequency converter for speed control.

Use and operation

Precautions

Lists essential safety precautions before and during operation.

Filling - Priming

Details the procedures for filling and priming the pump unit for operation.

Positive suction head installation

Step-by-step guide for priming with positive suction head.

Suction lift installation

Step-by-step guide for priming with suction lift installation.

Rotation sense check (three-phase motors)

Explains how to check the correct rotation direction for three-phase motors.

Wrong rotation direction

Provides the procedure to correct wrong rotation direction.

Start-up

Outlines the procedure for safely starting the pump unit.

Stopping

Describes the correct procedure for stopping the pump unit.

Maintenance

Precautions

General safety precautions to be observed before performing maintenance.

Maintenance every 4000 hours of operation, or every year

Details the maintenance tasks to be performed every 4000 hours or annually.

Long periods of inactivity

Provides instructions for preparing the unit for long periods of inactivity.

Tightening torques of the threaded connections

Lists tightening torques for various threaded fittings on the unit.

Spare parts ordering

Informs on how to order spare parts using product codes.

Troubleshooting

Precautions

Safety precautions to be taken before troubleshooting any issues.

The unit does not start

Lists common causes and remedies for the unit failing to start.

The differential protection device (RCD) is activated

Discusses causes and remedies when the RCD is activated.

The thermal overload protection triggers or the fuses trip

Covers issues related to thermal overload protection or blown fuses.

The thermal overload protection triggers

Details further causes and remedies for thermal overload triggers.

The motor becomes excessively hot

Explains why the motor might overheat and how to fix it.

The unit runs but there is little or no flow rate

Addresses issues where the unit operates but has low or no flow.

When switched off, the unit turns in the opposite direction

Troubleshoots the unit rotating in the wrong direction after shutdown.

The unit produces excessive noise and;or vibrations

Provides solutions for excessive noise or vibrations from the unit.

The unit starts up too frequently (automatic start;stop)

Discusses issues with the unit starting up too often.

The unit never stops (automatic start;stop)

Addresses problems where the unit fails to stop automatically.

The unit is leaking

Covers causes and remedies for unit leaks, primarily mechanical seals.

The frequency converter is in error mode or turned off

Guides on troubleshooting frequency converter errors.

Technical Information

Operating environment

Specifies the recommended operating environment conditions for the unit.

Temperature of pumped liquid

Lists permitted liquid temperatures based on mechanical seal material.

Maximum head

Presents tables showing maximum pressure head for various models at 50 Hz.

Maximum operating pressure

Illustrates maximum operating pressure based on unit model and liquid temperature.

Maximum number of starts per hour

Provides guidelines on the maximum allowed starts per hour based on motor power.

Protection class

States the protection class (IP rating) of the unit.

Electrical specifications

Lists electrical specifications, including voltage tolerances and frequency.

Sound pressure

Provides sound pressure levels for different motor powers and frequencies.

Materials in contact with the liquid

Details the materials used for components in contact with the pumped liquid.

Mechanical seal

Specifies mechanical seal details including diameter, balance, and rotation.

Disposal

Precautions

Safety precautions for proper disposal of the unit and its components.

WEEE 2012;19;EU (50 Hz)

Information regarding the WEEE directive for electrical and electronic equipment disposal.

Declarations

Pump unit

Contains the EC Declaration of Conformity for the pump unit.

Pump

Contains the EC Declaration of Conformity for the pump itself.

Warranty

Information

Refers to sale contract documentation for warranty information.

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Xylem LOWARA e-SV Series - User Manual

Table of Contents

Other manuals for Xylem LOWARA e-SV Series

Questions and Answers

Xylem LOWARA e-SV Series Specifications

Summary

Introduction and Safety

Introduction

Safety

Danger levels and safety symbols

User safety

Protection of the environment

Sites exposed to ionizing radiations

Handling and Storage

Handling of the packed unit

Unit inspection upon delivery

Unit handling

Storage

Technical Description

Designation

Data plate

Identification code

Names of the main components

Intended use

Improper use

Use in water distribution networks for human consumption

Special applications

Installation

Precautions

Assembly of the motor

Mechanical installation

Installation area

Permitted positions

Installation on concrete foundation

Fastening of the unit

Reducing vibrations

Hydraulic connection

Guidelines for the hydraulic system

Forces and torques applicable to the flanges

Electrical connection

Ground

Guidelines for electrical connection

Guidelines for the electrical control panel

Guidelines for the motor

Operation with frequency converter

Use and operation

Precautions

Filling - Priming

Positive suction head installation

Suction lift installation

Rotation sense check (three-phase motors)

Wrong rotation direction

Start-up

Stopping

Maintenance

Precautions

Maintenance every 4000 hours of operation, or every year

Long periods of inactivity

Tightening torques of the threaded connections

Spare parts ordering

Troubleshooting

Precautions

The unit does not start

The differential protection device (RCD) is activated

The thermal overload protection triggers or the fuses trip

The thermal overload protection triggers

The motor becomes excessively hot

The unit runs but there is little or no flow rate

When switched off, the unit turns in the opposite direction

The unit produces excessive noise and;or vibrations

The unit starts up too frequently (automatic start;stop)

The unit never stops (automatic start;stop)

The unit is leaking

The frequency converter is in error mode or turned off

Technical Information

Operating environment

Temperature of pumped liquid

Maximum head

Maximum operating pressure

Maximum number of starts per hour