Xylem Flygt ENM 10 Owner's manual

Flygt ENM 10 Level regulator
Installation, Operation
and Maintenace
Manual

Table of Contents
Introduction............................................................................................................................................ 2
Purpose of this manual....................................................................................................................... 2
Inspect the delivery.............................................................................................................................2
Product warranty................................................................................................................................. 2
Safety....................................................................................................................................................... 4
............................................................................................................................................................... 4
Safety message levels.........................................................................................................................4
User safety............................................................................................................................................ 5
Ex-approved products........................................................................................................................5
Environmental safety...........................................................................................................................6
Electrical Data...................................................................................................................................... 6
Safety data for EX approved installation.......................................................................................... 7
Approvals............................................................................................................................................. 7
Product Description...............................................................................................................................8
............................................................................................................................................................... 8
Installation............................................................................................................................................ 9
Level Regulator..................................................................................................................................10
Connection of Level Regulator for Audible or Visible Alarm...................................................... 12
Ex Installation.....................................................................................................................................12
Maintenance...................................................................................................................................... 13
Available languages............................................................................................................................ 14
.............................................................................................................................................................14
Table of Contents
Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual 1

Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Read this manual carefully before installing and using the product. Improper use of the
product can cause personal injury and damage to property, and may void the warranty.
NOTICE:
Save this manual for future reference, and keep it readily available at the location of the
unit.
Inspect the delivery
Inspect the package
1. Inspect the package for damaged or missing items upon delivery
2. Note any damaged or missing items on the receipt and freight bill
3. File a claim with the shipping company if anything is out of order.
If the product has been picked up at a distributor, make a claim directly to the
distributor
Inspect the unit
1. Remove packing materials from the product. Dispose of all packing materials in
accordance with local regulations
2. Inspect the product to determine if any parts have been damaged or are missing
3. If applicable, unfasten the product by removing any screws, bolts, or straps. For your
personal safety, be careful when you handle nails and straps
4. Contact your sales representative if anything is out of order
Product warranty
Coverage
Xylem undertakes to remedy faults in products from Xylem under these conditions:
• The faults are due to defects in design, materials, or workmanship
• The faults are reported to an Xylem representative within the warranty period
• The product is used only under the conditions described in this manual
• The monitoring equipment incorporated in the product is correctly connected and in
use
• All service and repair work is done by Xylem-authorized personnel
• Genuine Xylem parts are used
• Only Ex-approved spare parts and accessories authorized by Xylem are used in Ex-
approved products
Introduction
2 Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual

Limitations
The warranty does not cover faults caused by these situations:
• Deficient maintenance
• Improper installation
• Modifications or changes to the product and installation made without consulting
Xylem
• Incorrectly executed repair work
• Normal wear and tear
Xylem assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Warranty claim
Xylem products are high-quality products with expected reliable operation and long life.
However, should the need arise for a warranty claim, then contact your Xylem
representative.
Introduction
Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual 3

Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical injury
• Operating or installing the unit in any way that is not covered in this manual could cause
death, serious personal injury, or damage to the equipment. This includes any
modification to the equipment or use of parts not provided by Xylem. If there is a
question regarding the intended use of the equipment, please contact an Xylem
representative before proceeding
• Do not change the service application without the approval of an authorized Xylem
representative
CAUTION:
You must observe the instructions for installation, operation, and maintenance contained
in this manual. Failure to do so could result in physical injury, damage, or delays.
Safety message levels
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent
these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Definitions
Safety message level Indication
DANGER: A hazardous situation which, if not avoided, will result in
death or serious injury
WARNING: A hazardous situation which, if not avoided, could result
in death or serious injury
CAUTION: A hazardous situation which, if not avoided, could result
in minor or moderate injury
Safety
4 Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual

Safety message level Indication
Electrical Hazard: The possibility of electrical risks if instructions are not
followed in a proper manner
NOTICE:
A potential situation which, if not avoided, could result in
undesirable conditions
A practice not related to personal injury
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean
• Pay attention to the risks presented by gas and vapors in the work area
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash
hazards
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries
Electrical connections
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local regulations. For more information about
requirements, see sections dealing specifically with electrical connections.
Hazardous liquids
The product is designed for use in liquids that can be hazardous to your health. Observe
these rules when you work with the product:
• Make sure that all personnel who work with sewage systems are vaccinated against
diseases to which they may be exposed
• Observe strict personal cleanliness
Wash the skin and eyes
Do the following if chemicals or hazardous fluids have come into contact with your eyes or
your skin:
If you need to wash your... Then...
Eyes • Hold your eyelids apart forcibly with your fingers
• Rinse the eyes with eyewash or running water for at
least 15 minutes
• Seek medical attention
Skin • Remove contaminated clothing
• Wash the skin with soap and water for at least one
minute
• Seek medical attention, if required
Ex-approved products
Follow these special handling instructions if you have an Ex-approved unit.
Safety
Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual 5

Personnel requirements
These are the personnel requirements for Ex-approved products in potentially explosive
atmospheres:
• All work on the product must be carried out by certified electricians and Xylem-
authorized mechanics. Special rules apply to installations in explosive atmospheres
• All users must know about the risks of electric current and the chemical and physical
characteristics of the gas, the vapor, or both present in hazardous areas
• Any maintenance for Ex-approved products must conform to international and national
standards (including IEC/EN 60079-17).
Xylem disclaims all responsibility for work done by untrained and unauthorized personnel.
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in
potentially explosive atmospheres:
• Before you start work on the product, make sure that the product and the control panel
are isolated from the power supply and the control circuit, so they cannot be
energized
• Do not open the product while it is energized or in an explosive gas atmosphere
• Intrinsically safe circuits are normally required for the automatic level-control system by
the level regulator if mounted in zone 0
• Do not modify the equipment without approval from an authorized Xylem
representative
• Only use parts that are provided by an authorized Xylem representative
Environmental safety
The work area
Always keep the station clean to avoid and/or discover emissions.
Recycling guidelines
Always recycle according to these guidelines:
• Follow local laws and regulations regarding recycling if the unit or parts are accepted
by an authorized recycling company
• If the first guideline is not applicable, then return the unit or parts to your Xylem
representative
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Appropriately dispose of all waste
• Handle and dispose of the processed liquid in compliance with applicable
environmental regulations
• Clean up all spills in accordance with safety and environmental procedures
• Report all environmental emissions to the appropriate authorities
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
Electrical Data
Country Electrical Data
Canada 5 A, 250 V, DC
10 A, 250 V AC
Denmark 10 A, 250 V, AC
Safety
6 Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual

Country Electrical Data
Switzerland 6 A, 250 V, AC
Sweden 10 A, 230 V, AC Resistive load
3A, 250 V, AC Inductive load
5 A, 30 V, DC Resistive load
*1 mA, 5 V, DC, Gold Contact
* Part no: 594 79 19 & 594 79 20
Safety data for EX approved installation
Maximum input voltage, Ui: 30 V
Maximum input current, Ii: 100 mA
Maximum input power, Pi: 1.2 W
Depth of immersion: Max 20 m
For cable length 20 m:
Maximum internal capacitance, Ci: 1.8 nF
Maximum internal inductance, LI: 10 μH
Approvals
CE, CSA, SEMKO, NEMKO, DEMKO, EX
LVD approval according to EN61058
CSA approval: Cert no. 1330172
Cl.I Zone 0, Gr. IIC;
CL.I Div.1 Gr A, B, C&D
Cl.II Gr. E, F&G
Cl.III when installed to the certified Intrinsically Safe relay, Ex ia, rated for the locations per
submitter control drawing and installation manual.
Ex approval:
IECEx ia IIC T4 Ga: -20°C<Ta<60°C
IECEx NEMKO 09.008
ATEX II 1G ia IIC T4
NEMKO 10ATEX 1082
The applied standards are:
EN 60079-0:2009/IEC 60079-0:2007
EN 60079-11:2007/IEC 60079-0:2006
EN 60079-26:2007/IEC 60079-26:2006
Intrinsically safe circuits are required for the automatic control system. - Use a EX-safety
barrier (e.g. Prod. no. 84 01 07).
0080
R
Safety
Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual 7

Product Description
Overview
The simplest possible method for level control! A mechanical switch in a plastic casing,
freely suspended at the desired height from its own cable. When the liquid level reaches
the regulator, the casing will tilt and the mechanical switch will close or break the circuit,
thereby starting or stopping a pump or actuating an alarm device. No wear, no
maintenance! In sewage pumping stations, for ground water and drainage pumping — in
fact, for most level control applications — the ENM-10 is the ideal solution.
The regulator casing is made of polypropylene and the cable is sheathed with a special
PVC or Nitrile/PVC rubber compound. The plastic components are welded and screwed
together. Adhesive is never used. Impurities and deposits will not adhere to the smooth
casing.
The version for Ex-applications has a black casing, made conductive by adding carbon to
the polypropylene.
The level regulator contains a micro switch, max rated 250 VAC/10 A.
NOTICE:
In many cases, local codes require that the regulator be connected to a low-voltage
supply, even though it is approved for a higher voltage.
Xylem recommends that the regulator be connected to a low-voltage supply, 48 or 24 V,
and a protective transformer.
Special rules apply to installation in an explosive atmosphere. Intrinsically safe circuits are
normally required (Ex i). Use a EX-safety barrier (e.g. Prod. no. 84 01 07).
The ENM-10 is available in different versions for different liquid densities.
As standard, the regulator can be obtained with 6, 13, 20, 30 or 50 metres (20, 42, 65, 100
or 167 feet) of cable for liquids with specific density between 0.95 and 1.10 g/cm3; for
other specific densities.
For the Ex-version, the regulator is only available with 20 metres (65 ft) of Nitrile/PVC
rubber cable.
The regulator can withstand up to 60°C (140°F).
The guarantee does not cover faults caused by deficient maintenance, improper
installation, incorrectly executed repair work or normal wear and tear.
Xylem assumes no liability for either bodily injuries, material damages or economic losses.
Product coverage
This manual cover the standard version “Blue casing” of ENM-10.
Product coverage
This manual cover the EX-version “Black casing” of ENM-10.
Product Description
8 Flygt ENM 10 Level regulator Installation, Operation and Maintenace Manual