Munters EC52 Instruction manual

Manual for use and maintenance
+ CE Declaration of conformity
EC52
Air extraction fan
Ag/MIT/ UmGB-2574-05/18 Rev 1.2
EC52

2| © Munters AB, 2018
EC52
Manual for use and maintenance
Original instructions
Revision 1.2
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 and to make alterations to specifications, quantities,
etc.,for production or other reasons, subsequent to publication.
Warranty
For Warranty information please refers to "General terms and condition of sale" available on
https://www.munters.com/globalassets/terms-and-policies/condizioni_generali_vendita.pdf
Conditions and Limitations:
•Products and Systems involved in a warranty claim under
the "General terms and condition of sale" shall have been
properly installed, maintained and operated under
competent supervision, according to the instructions
provided by Munters;
•Malfunction or failure resulting from misuse, abuse,
negligence, alteration, accident or lack of proper
installation or maintenance shall not be considered a
defect under the Warranty.

3| © Munters AB, 2018
CONTENTS
1. CE DECLARATION................................................................................4
1.1 Disclaimer........................................................................................................5
1.2 Introduction......................................................................................................5
1.3 Notes ...............................................................................................................5
1.4 Data for Fan Eco Design Directive..................................................................6
1.5 Attached technical documentation...................................................................6
1.6 Disposal...........................................................................................................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 ................................................................................................11
3. BEFORE USING...................................................................................13
3.1 Delivery check ...............................................................................................13
3.2 Packaging and transport of assembled fans .................................................13
3.3 Structure ........................................................................................................14
4. OPERATING CONDITIONS .................................................................15
4.1 Intended conditions of use.............................................................................15
4.2 Non-permitted conditions of use....................................................................15
5. INSTALLATION....................................................................................18
5.1 Choice of site and checking installation requirements ..................................18
5.2 Assembly of the cone ....................................................................................19
5.3 Placement of fans..........................................................................................21
5.4 Connection to the electrical system...............................................................23
5.5 Tests and checks before startup ...................................................................28
6. COMMISSIONING................................................................................30
6.1 Control devices..............................................................................................30
6.2 Instructions for starting up .............................................................................30
7. TECHNICAL DATA ..............................................................................32
7.1 Dimensions....................................................................................................32
7.2 Technical specifications.................................................................................32
8. MAINTENANCE ...................................................................................34
8.1 Introduction....................................................................................................34
8.2 Routine Maintenance Program......................................................................34
8.3 Cleaning.........................................................................................................34
8.4 Belt tensioning check up................................................................................35
9. SPARE PART LIST..............................................................................36
Spare parts ..........................................................................................................41

4| © Munters AB, 2018
1. 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
(Company Registration nr. 00081050080)
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
EC52
Year of manufacture
2018
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, 17th May 2018
Massimo Colombo
Legal Representative

5| © Munters AB, 2018
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 a Munters EC52 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 Munters fans.
1.3 Notes
Date of release: 2018.
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.

6| © Munters AB, 2018
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(1)
Overall efficiency η%
Measurement category
Efficiency category
Efficiency grade
Target efficiency grade 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
EC52 2.0hp 3ph
50Hz OS
37,2
A
static
41,9
40
no
1.827
30.164
81,1
458
1
EC52 1.5hp 3ph
50Hz OS
33,9
A
static
39,1
40
no
1.546
30.377
62,1
438
1
EC52 1.0hp 3ph
50Hz OS
35,7
A
static
41,7
40
no
1.142
28.982
50,7
383
1
EC52 1.0hp 1ph
50Hz OS
32,3
A
static
38,4
40
no
1.070
24.705
50,4
364
1
* Fans tested are configured according to COMMISSION REGULATION (EU) No 327/2011 of 30th March 2011 - ANNEX
II - 1.5. Efficiency values, according to Commission Regulation (EU) 327/2011, refers to exhaust fans only.
1.5 Attached technical documentation
The listed documentation is to be considered an integral part of this manual:
•technical sheet/electric motor instruction booklet.
1.6 Disposal
Do not dispose of this product with general household waste. This product must be disposed
according to the laws governing Waste Electrical and Electronic Equipment. If required,
contact your local authorities for information regarding the available disposal facilities.

7| © Munters AB, 2018
2. SAFETY ASPECTS
WARNING Failure to respect safety or behavioral 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.
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.
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.

8| © Munters AB, 2018
WARNING Operators must be trained to deal with the occurrence of possible
faults, malfunctions or dangerous conditions to themselves orothers, 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.
2.2 General safety instructions
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.
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.
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.

9| © Munters AB, 2018
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.

10 | © Munters AB, 2018
fig.2
Emergency stop function
fig.3
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.

11 | © Munters AB, 2018
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.
fig.4
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.
fig.5

12 | © Munters AB, 2018
Hazards generated by noise (measured at 2m distance)
Fan model
Sound pressure level Lp [dB(A)]
EC52 - 2 hp
77.5
EC52 - 1.5 hp
77.1
EC52 - 1 hp
76.2
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. The measurement has been taken according to the UNI EN
ISO 11202:2010.
WARNING 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.

13 | © Munters AB, 2018
3. BEFORE USING
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
the propeller by hand while the fan is switched off to verify smooth rotation of the propeller.
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.
fig.6
Once unpacked check the
opening of the shutter
manually by rotating the
central shutter blade. Verify
that during transportation
the plastic shutter bearings
did not fall off from their
operation condition. If yes
restore them by mean of a
screw-driver and re-check
the opening of the shutter.
Follow the steps shown in
the pictures.
fig.7

14 | © Munters AB, 2018
fig.8
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:
•forklift: before loading, make sure the forks are opened as much as possible to avoid
bending of the fan bottom panel;
•crane: fix two bolts in the M8 bushes situated on the sides of the fan housing and
hook the lifting cable over the bolts.
WARNING 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 7.2).
3.3 Structure
The fans consist of the following components:
•fan housing in Munters Protect coated steel without welding spots;
•fan shutter in Munters Protect coated steel, which pivots on UV protected plastic
bushes and pins;
•propeller with four blades in stainless or Munters Protect coated steel; blades are
fixed to the propeller by high-strength pop rivets;
•motor: single-phase or three-phases; 50 or 60 Hz; B3 form; F class winding
insulation, IP55 IEC protective class; asynchronous single-speed;
•centrifugal operated shutter opening device.
•Meshes for protection on back and front side.

15 | © Munters AB, 2018
4. OPERATING CONDITIONS
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.
Normal ambient temperature limits are –15°C to +40°C. Maximum altitude is 1000m above
sea level. Should a fan be required to operate at a higher altitude, the loss in mass flow (heat
removing capacity) due to lower air density should be taken into consideration.
fig.9
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.
NOTE For further information, please refer to the technical documentation attached
to this 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;

16 | © Munters AB, 2018
•incorrect installation differing from instructions given in this manual;
•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.
WARNING 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.
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.
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.
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.
WARNING Interference with the command and control circuits is prohibited: such
operations could cause damage to the equipment and serious danger to the
operator.
NOTE 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.

17 | © Munters AB, 2018
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.
WARNING 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 The metal sheets used for constructing the fan housing and shutter
blades have a surface coating made of an alloy of Zinc, Aluminum and Magnesium,
classified as Zm120 (equivalent to 9 μm of coating thickness on each side of the
panels) which corresponds to a corrosion resistance in salty mist of 1800 hours.
Whenever it is intended to use the fans in ambients characterized by the presence of
particularly aggressive agents (ammonia, clavulanic acid, etc.) the user, before installing the
fan at the installation site must verify that the environmental conditions are compatible with
the intended use of the materials that compose the fan.

18 | © Munters AB, 2018
5. INSTALLATION
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.
WARNING 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.
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
-15°C / +40°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.10).
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.

19 | © Munters AB, 2018
A-1997 B-1997
fig.10
5.2 Assembly of the cone
Fans are delivered with the cone disassembled to minimise space usage during
transportation. To move the cone to its working position, it is necessary to follow the steps
indicated below.
fig.11
1. Take two sectors of the
cone, one for each
type.
fig.12
2. Align the four fingers of
one of the two cone
sectors to the
respective slot of the
other.

20 | © Munters AB, 2018
fig.13
3. Insert the fingers in the
slots.
fig.14
4. Slip in the sector with
the fingers facing
downwards; assuring
to aligne the hole for
fixing the screw.
5. Repeat from step 2,
using the remaining
two sectors, steering
the fingers on the
same side.
6. Close the cone
steering the fingers
internally.
fig.15
7. Bolt the four junction
points on the wide area
of the cone