Munters EM52 Instruction manual

Manual for use and maintenance
EM52
Air extraction/circulation fan
EM52
+ CE Declaration of conformity
Ag/MIT/UmGB-2134-08/13 rev 1.0

© Munters AB, 2013
2
EM52
Manual for use and maintenance
Original instructions
This manual for use and maintenance is an integral part of the apparatus together with the attached technical
documentation and has been produced with reference to Directive 2006/42/EC, paragraph A, Annex II, and to
ErP Directive 2009/125/CE Commission Regulation 327/2011.
This document is destined for the user of the apparatus: it may not be reproduced in whole or in part, committed
to computer memory as a file or delivered to third parties without the prior authorisation of the assembler of the
system.
Munters Italy S.p.A. reserves the right to effect modifications to the apparatus in accordance with technical and
legal developments.

© Munters AB, 2013 3
chapter page
1. CE DECLARATION 5
1.1 Disclaimer 6
1.2 Introduction 6
1.3 Notes 6
1.4 Attached technical documentation 6
2. SAFETY ASPECTS 7
2.1 Personnel requirements 7
2.2 General safety instructions 8
2.3 Safety devices 8
2.4 Residual risks 10
3. BEFORE USING 12
3.1 Delivery check 12
3.2 Packaging and transport of assembled fans 12
3.3 Structure 12
4. OPERATING CONDITIONS 13
4.1 Intended conditions of use 13
4.2 Non-permitted conditions of use 13
5. INSTALLATION 16
5.1 Choice of site and checking installation requirements 16
5.2 Installing Series EM fans 17
5.3 Connection to the electrical system 18
5.4 Tests and checks before startup 20
6. COMMISSIONING 22
6.1 Control devices 22
6.2 Instructions for machine use 22
Index

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7. TECHNICAL DATA 24
7.1 Dimensions 24
7.2 Technical specifications 24
7.3 Motor specifications 25
8. MAINTENANCE 26
8.1 Introduction 26
8.2 Cleaning 26
8.3 Belt tensioning check up (only EM models) 26
8.4 Replacement of propeller 27
8.5 Replacement of central pulley 28
8.6 Replacement of shutter bearing assembly 28
8.7 Fan bearing lubrication 28
8.8 Replacement of shutter opening device (centrifugal system) 29
9. SPARE PART LIST 30
10. WARRANTY 34
Index

© Munters AB, 2013 5
CE Declaration
CE DECLARATION OF CONFORMITY
(complies with Subparagraph A Annex II Directive 2006/42/EC)
Munters Italy S.p.A.
with registered offices in Strada Piani 2 – 18027 Chiusavecchia (IM) – Italy
DECLARES ON ITS OWN RESPONSIBILITY THAT THE APPARATUS
Designation Fan designed for moving air to control temperature and
humidity in greenhouses or rearing sheds.
Model EM52
Year of manufacture 2013
CONFORMS WITH THE ESSENTIAL SAFETY REQUIREMENTS STATED
BY APPARATUS DIRECTIVE 2006/42/EC AND PERFORMANCE REQUIREMENTS
COMPLY WITH THE ERP DIRECTIVE 2009/125/CE.
WITH PARTICULAR REFERENCE TO THE FOLLOWING PROVISIONS:
UNI EN 953:2009, UNI EN ISO 12100:2010, UNI EN ISO 12499:2009,
UNI EN ISO 13857:2008, CEI EN 60204-1:2006 (CEI 44-5), UNI EN ISO 5801:2009
Chiusavecchia, 15hAugust 2013
Marco Scomparin
Legal representative
1.

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1.1 Disclaimer
Munters reserves the right to make alternations to specifications, quantities, dimensions etc. for production or other
reasons, subsequent to publication. The information contained herein has been prepared by qualified experts within
Munters. While we believe the information is accurate and complete, we make no warranty or representation for
any particular purposes. The information is offered in good faith and with the understanding that any use of the
units or accessories in breach of the directions and warnings in this document is at the sole discretion and risk of
the user.
1.2 Introduction
Congratulations on your excellent choice of purchasing an Euroemme®fan!
In order to realize the full benefit from this product it is important that it is installed, commissioned and operated
correctly. Before installation or using the fan, this manual should be studied carefully. It is also recommended that
it is kept safely for future reference. The manual is intended as a reference for installation, commissioning and day-
to-day operation of the Euroemme fans.
1.3 Notes
Date of release: 2013.
Munters cannot guarantee to inform users about the changes or to distribute new manuals to them.
All rights reserved. No part of this manual may be reproduced in any manner whatsoever without the expressed
written permission of Munters. The contents of this manual are subject to change without notice.
1.4 Data for Fan Eco Design Directive
Product information requirements* →
(according to ANNEX I - 3.2 of regulation) 1 2 3 4 optional 5 6a 6b 6c 7 8
Fan description*
Overall efficiency η% Measurement category Efficiency category Efficiency grade Target efficiency grade 2013 (2015) VSD must be installed with the fan Motor power input at optimum energy efficiency [W] Flow rate at optimum energy efficiency [m3/h]
Pressure at optimum energy efficiency [Pa] RPM at optimum energy efficiency Specific ratio
EM52 2.0hp 3ph 50Hz OS 34 A static 38,7 36 (--) no 1.831 32.573 68,8 413 1
1.4 Attached technical documentation
The listed documentation is to be considered an integral part of this manual:
• technical sheet/electric motor instruction booklet.
CE DeclarationChapter1

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2.1 Personnel requirements
Equipment may only be used by personnel who know and apply the specific requirements given in the user and
maintenance manual and the more general instructions contained in various regulations for accident prevention
and applicable legislation regarding safety in the workplace, as well as other European Community directives
incorporated by the member states into their national legislation.
Knowledge and understanding of the manual and of the attached documents constitute an indispensable tool for
reducing hazards and promoting the safety and health of workers.
Personnel training
All operators engaged in the use of the fan must have received adequate information from the employer relating
to:
• risks to health and safety at work connected with the use of the machine;
• first aid procedures, fire precautions and evacuation of workplaces;
• devices provided for the safety of operators, and residual risks generated by the machine.
In particular, the employer has the following duties:
• when assigning tasks to operators, to take into account their capabilities in the interests of safeguarding
their health and safety;
• to provide adequate means of protection;
• to require compliance by individual operators with the company rules and provisions regarding safety and
the use of the collective and individual protective measures at their disposal;
• to ensure that normal and special maintenance operations, or in any event operations necessary for machine
safety, are regularly carried out.
All operators must take care of their own safety and health as well as that of other people in the workplace who
may be affected by their actions or omissions, in accordance with their personal skills, and the instructions and
means provided to them by the employer.
Failure to respect safety or behavioural rules can produce hazardous situations
for users as well as damage to the machine and the place where it is installed.
The fan must only be used if it is in perfect operating condition, by personnel who
are perfectly aware of the safety measures and possible hazards, and in strict
compliance with the instructions given in this manual.
WARNING
WARNING
Unauthorized tampering/replacement of one or more parts of the machine, or
the use of accessories, tools or materials other than those recommended by the
manufacturer, are prohibited and release the manufacturer from all liability.
Safety aspects 2.

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2.2 General safety instructions
2.3 Safety devices
In the process of designing and building the fan, the manufacturer adopted the necessary technical solutions to
ensure compliance with fundamental safety requirements: the object of the risk reduction process was to ensure
that the operator can use the fan in safety. The machine is provided with protection devices of fixed type and is
fitted with an actuator for the emergency stop function.
Fixed guards
The fixed guards are solidly fixed to the structure of the machine and cannot easily be eluded: the guards are fixed
with systems which require the use of tools for dismantling.
Operators must be trained to deal with the occurrence of possible faults,
malfunctions or dangerous conditions to themselves or others, and in such an
event must:
• stop the fan immediately by operating the emergency stop device (mushroom-
shaped pushbutton/main switch mounted on the electrical panel);
• not carry out operations which are beyond their duties and/or technical
knowledge.
WARNING
• Safety devices must not be removed or rendered ineffective;
• the fan must not be started with guards removed;
• any adjustment or maintenance operation must be performed with the
electrical isolating device activated and locked in position with a padlock;
• any operation is prohibited which may cause arcing or sparks or other
situations which could start a fire;
• in the event of alarm signals resulting in the intervention of safety devices, the
operator must ask for immediate action by qualified technicians responsible
for maintenance;
• user must ensure that the environmental and electricity supply conditions
in which the fan operates are always within the limits specified in this user
manual;
• do not for any reason modify parts of the fan in order to fit additional devices.
WARNING
Do not start the fan with fixed guards removed: the guards can only be removed
with special tools, by specialized and trained personnel and with the system
stationary (emergency system activated and electricity and hydraulic fluid
isolated). At the end of maintenance operations, the guards which were removed
must be replaced correctly.
WARNING
Safety aspectsChapter2

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Position of guard Type of guard Notes
Intake side of fan Guard of fixed type made of metal
mesh.
Dimensions and positioning in
accordance with the instructions
in the standard UNI EN 13857.
Removable only by means of
special tool.
fig. 1
Outlet side of fan Guard of fixed type made of metal
mesh.
Dimensions and positioning in
accordance with the instructions
in the standard UNI EN 13857.
Removable only by means of
special tool
fig. 2
Safety aspectsChapter2

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Emergency stop function
The machine must be equipped at the installation stage with an electrical panel, on
which must be installed an actuator for the emergency stop function, which when
operated brings dangerous movements to a halt by isolation of the power supply:
the button must be mushroom-shaped and coloured red, provided with mechanical
restraint and released by turning.
2.4 Residual risks
Mechanical hazards
Part of machine/stage of use Description Plates/provisions/PPE
Installation of machine
Hazard arising from failure to observe
ergonomic principles, caused by
excessive strain, i.e. generic mechanical
hazard during the moving and installing
stages of the machine.
Electrical hazards
System area Description Plates/provisions/PPE
Panels, covers and electrical apparatus.
The safety signs must be fixed in an
extremely visible position on the door
of the electrical panel and on covers
containing electrical apparatus, to
highlight the risks to which an operator
could be exposed in the event of opening
the electrical panel (danger resulting
from the presence of live parts), the level
of voltage present, the prohibition of
tampering by unauthorized personnel
and the prohibition on the use of liquids
on electrical apparatus in the event of
fire.
Safety aspectsChapter2

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Hazards generated by noise (measured at 2m distance)
Fan model Sound pressure level Lp [dB(A)]
EM52 - 2.0hp 78
A measurement has been made of the noise produced by the machine during normal operation in order to calculate the equivalent level in conditions of
normal use. These values are shown in the above table.
Safety aspectsChapter2
The user and the employer must comply with current national law in terms of
protection against daily personal exposure of operators to noise, by providing
the use of personal protective equipment (earmuffs, earplugs, etc.) if necessary,
depending on the overall level of sound pressure in the installation area, and the
daily personal exposure of the employees. In areas where the overall sound level
reaches excessive values, personal protective equipment must be used.
WARNING
The fan must only be used if it is in perfect operating condition, by personnel, aged
more than 14 years who are perfectly aware of the safety measures and possible
hazards, and in strict compliance with the instructions given in this manual.
WARNING

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3.1 Delivery check
Upon receipt, inspect the fan for external damage and if found, inform the forwarding agent without delay. Check
the data on all the rating plates, especially voltage and frequency. Turn propeller by hand to check free rotation.
Check the opening of the shutter by hand.
3.2 Packaging and transport of assembled fans
The fan has a self-supporting structure in galvanised steel and it is usually delivered without packaging. Upon
request fans can be delivered packed in cardboard boxes. Fans should not be permanently stocked one upon
the other, regardless if they are delivered with or without packaging. Handling of the fans should not be done
manually as the fans have no handles or grips. Consequently one of the following alternatives should be used:
• trolley: when loading the fan on the trolley make sure fan shutter is positioned outwards;
• forklift: before loading, make sure the forks are opened as much as possible to avoid bending of the fan
bottom panel and damaging the shutter;
• crane: fix two bolts in the M8 bushes situated on the sides of the fan housing and hook the lifting cable over
the bolts
3.3 Structure
The fans consist of the following components:
• fan housing in galvanised steel without welding spots;
• fan shutter in galvanised steel, which pivots on UV protected plastic bushes and pins;
• propeller with six blades* in stainless, precoated or galvanised steel; blades are fixed to the propeller by
high-strength pop rivets;
• asynchronous three-phases motor; 50 or 60 Hz; B3 form; F class winding insulation, IP55 protection class;
single-speed;
• centrifugal operated shutter opening device.
* Number may vary according to fan model.
Make sure a steel cable or rope of adequate size is being used when the fan is
lifted by crane. Fan weights are shown in the technical specification table (see
section 7.1).
WARNING
Before using 3.

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For further information, please refer to the technical documentation attached to
this manual.
4.1 Intended conditions of use
Fans are machines designed for moving air to control temperature and humidity in greenhouses or rearing sheds
by extraction, not under pressure. They can even be installed horizontally, without altering or modifying their
characteristics.
fig. 3
The fan has been designed and built to operate in safety for the user, if used according to the conditions intended
by the manufacturer and stated in this user and maintenance manual.
4.2 Non-permitted conditions of use
Total or partial failure to observe the instructions given in this manual could cause damage to the fan and/or
people.
The following uses are to be considered not permitted and improper:
• use in the event of faults and/or tampering with the installed safety devices;
• use by personnel not specifically trained;
• installation of the fan for extraction or circulation under pressure;
• use contrary to existing regulations;
• incorrect installation differing from instructions given in this manual;
Operating conditions 4.
NOTE
!

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• supply from an electrical network with characteristics different from that specified in the wiring diagram;
• total or partial failure to observe instructions;
• insufficient maintenance;
• use of non-original spare parts;
• use of lubricants with characteristics different from those specified in the technical documentation attached
to the manual;
• use by minors;
• use under the influence of drugs, alcohol, etc.
Use of non-original spare parts
Original spare parts ensure the reliability and safety of the operation of the fan: in the event of maintenance/
replacement, consult the spare parts list, the list of parts and components used and the relevant technical
documentation attached to this manual.
Insufficient maintenance
A correct normal maintenance is one that maintains the original integrity or restores the fan’s efficiency, while at
the same time limiting normal deterioration resulting from use.
Special maintenance work can also prolong the usable life of the machine and/or, secondarily, can improve its
efficiency, reliability, productivity and ease of maintenance and inspection.
Unauthorized modifications or tampering
No operation is permitted which is aimed at making modifications to the fan and the safety devices fitted to it;
similarly, it is not possible to alter its operational and performance characteristics.
Use of the fan other than as described in the user manual or outside the
operational limits laid down by the manufacturer is considered IMPROPER USE.
In the event of IMPROPER USE the manufacturer declines all liability in relation
to any damage that may be caused to persons or property, and any kind of
warranty will be considered invalidated.
WARNING
In the event of replacement of safety devices, it is essential to maintain the safety
and operational characteristics of the original device, preferring replacement
with an identical component.
WARNING
Interference with the command and control circuits is prohibited: such operations
could cause damage to the equipment and serious danger to the operator.
WARNING
Operating conditionsChapter4

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Use in a potentially explosive atmosphere
The fan has been designed and built to operate in environments where the presence of a potentially explosive
atmosphere is not expected, in other words it is not intended to handle materials which release explosive dust.
Emission into the atmosphere of harmful particles or gases must be contained within the limits established by
current regulations.
Modifications made to the fan which do not come into the categories of normal
and special maintenance, or which alter its operational and performance
characteristics, invalidate the machine’s compliance with the requirements of the
applicable directives, as attested by the manufacturer with the EC declaration
of conformity: it is up to the person responsible for the modification to resubmit
the machine to the assessment conformity procedures specified in the applicable
directives.
The fan has been designed and built in such a way that it CANNOT operate in a
classified area, according to directive 1999/92/EC.
WARNING
NOTE
!
Operating conditionsChapter4

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After fan has been delivered but before fitting and installation, check condition of the consignment: in the event of
discrepancy or damage to the machine, the manufacturer or carrier must be informed immediately.
Fitting the fan must be carried out according to the following stages:
• positioning and anchoring the fan;
• connection to the mains electricity supply;
• operational testing and putting into operation.
5.1 Choice of site and checking installation requirements
The user is responsible for preparing an area suitable for installation of the equipment and complying with the
requirements laid down by European directives and national law governing safety at places of work.
Environmental conditions for operating the equipment are as follows:
Ambient temperature during operation Ambient humidity during operation
- 25°C / + 50 °C < 90%
For operation of fan installation, a manoeuvring area must be made available that is suitable for the fan dimensions
and the chosen lifting equipment: electrical points must be provided in the installation area for fan connection to
the mains electricity supply.
Irrespective of the place of installation, suitable indelible warning signs are attached to the fan, warning of danger
and giving instructions to remain at a safe distance not to place hands inside the shutter and not to run in proximity
of the fan.
The warning signs are yellow, self-adhesive and indelible. They are fitted to the front and rear of the fan, and
marked with the numbers A-1997 and B-1997 (see fig.4).
The area adjacent to the fan in the premises from which air is being extracted must be kept clear to allow the air
to exit freely. It is also prohibited for anyone to remain in this area, because of the presence of organic gases and
dust which may be present in the airflow.
Fitting and installation of the fan must be performed by specialized personnel, in
order to prevent damage to the equipment or hazards to people as a result of
faulty fitting.
The fans must be installed at a height of not less than 2.7 m from the ground.
If they are installed at a lower height, the fans must be fitted with the optional
pyramidal safety mesh by the manufacturer, to protect the internal rotor.
Failure to install the safety mesh releases the manufacturer from all liability and
shall be considered an improper use of the machine.
Installation 5.
WARNING
WARNING

© Munters AB, 2013 17
A-1997
fig. 4
B-1197
5.2 Installing Series EM fans
fig. 5
If the fan is fixed directly to a metal structure, M8
bolts type 8.8 must be used, screwing them into the
threaded inserts provided for the purpose on the
bodywork (two per side).
fig. 6
If the fan is installed in a masonry structure, an iron
outer frame must be constructed (not supplied with the
fan), with a 60 mm L-shaped profile at least 5 mm
thick, with suitably-sized clamps.
When the outer frame is properly built-in, i.e. perfectly
level and upright, insert the fan, screwing four M8 bolts
type 8.8 (not supplied with the fan) into the threaded
inserts provided on the sides of the bodywork, two per
side.
The fans must be installed to carry out extraction of the air present in the area,
and must not operate under positive pressure. It is also permissible to install the
fan in a horizontal position.
InstallationChapter5
WARNING

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5.3 Connection to the electrical system
The fan is supplied without a command and control circuit, but with all the internal electrical connections already
made.
At the fitting stage, the installer must set up a control panel in compliance with the requirements of standard IEC
EN 60439-1, and arrange the wiring of the fan in accordance with the instructions in standards IEC EN 60204-1
and IEC 60364.
The electrical panel of the fan must generally be equipped with the following devices (bearing EC marking as per
directive 2006/95/EC):
Lockable isolating switch.
Magnetothermic switch (chosen to suit the power of the motor).
The need to fit a switch of differential type depends on the configuration of the
electrical system supplying the fan: it is the installer’s responsibility to make this
assessment in accordance with the instructions in standard IEC 60364.
Red emergency stop button, mushroom type, provided with mechanical locking
and release by turning (in compliance with UNI EN ISO 13850). Operating the
button must bring about the electromechanical isolation of the power supply to the
electric motor (category 0/1 according to IEC EN 60204-1).
Start/stop selector switch (with characteristics compatible with the nominal current
of the motor), or main panel for managing the equipment, with control devices
which act on the electrical supply to the fan.
Do not supply power to the fan during installation stage.
Installer must issue a declaration of correct installation in accordance with
applicable legislation in the country of use.
WARNING
InstallationChapter5

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3 phases
+ ground
fig. 8
The electrical lines must be laid in accordance with requirements of the laws applying in the place of installation,
and in any event:
• they must be laid with cables of adequate section for the power of the fan and the length of the line itself;
• they must make an effective earth connection;
• they must have isolating devices and automatic protection against overload and short circuits.
Before activating the electrical supply to the machine by turning the isolator switch to position On, a series of
checks must be made:
• check that the voltage and frequency of the power source correspond to those indicated in the equipment
technical data and electrical diagram;
• check that the supply cables and the conductor providing external protection are correctly connected;
• check that the connections in the control and power circuits are properly tight;
• check that the intensity of the short-circuit expected at the connection terminals is compatible with the
breaking power of the protection switch upstream of the electrical panel;
• check that the protection devices (fuses, magnetothermic switches) are correctly sized, and that the phases
are connected in the correct order: check that the fan rotates in the direction of the arrow shown on the
driven pulley (see fig. 9).
The rating plate data of the electric motor and the instructions given in the attached
technical documentation must be used for sizing the power supply cable.
In the event of installations that do not comply with the directions given in this
chapter, the manufacturer’s liability ceases, along with the validity of the CE
Declaration of Conformity.
WARNING
InstallationChapter5

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fig. 9
Equipotential earthing wiring safeguard
To create effective protection against the risk of electrocution, the outer protection conductor must be connected to
terminal PE inside an electrical panel.
For correct sizing of the protection conductors, see following requirements as indicated in standard IEC EN 60204-1:
• phase conductor up to 16 mm2: section of the protection conductor equal to the section of the supply
conductor;
• phase conductor between 16 and 35 mm2: section of protection conductor equal to 16 mm2;
• phase conductor over 35 mm2: section of protection conductor equal to at least half the section of the
supply conductor.
Protection against contact voltages
The choice of device to protect the electrical system must be made in such a way as to ensure the safe intervention
of the main automatic switches and any differential devices linked to them. For an appropriate choice of the
type of protection for the machine’s supply line, taking into account whether the distribution system is TT or TN,
it is advisable to consult an electrical systems designer, in order to ensure compliance with the requirements of
standard IEC 64-8 or the equivalent provisions in the country where the machine is being installed.
5.4 Tests and checks before startup
Before startup, it is extremely important to carry out a very careful check of the fan, in order to prevent malfunctions
and/or accidents.
In particular, perform the following operations:
1. Equipotential earthing wiring safeguard:
• check the fan visually, verifying that there are no particular mechanical irregularities or foreign bodies inside
the structure;
• check that the protective structures (fixed guards made of metal mesh) are correctly positioned and fixed;
When connecting all the metal masses to the earth system, check that there are
no insulating elements between the various conductive masses (metal parts). The
system must not be put into operation unless the equipotentiality of the masses
and the connection to the earth system have previously been checked.
WARNING
InstallationChapter5