Robur AD Service manual

AD evaporative coolers
Installation, use and maintenance manual
For natural, simple and aordable cooling of medium and
large buildings

This Installation, use and maintenance manual has been drawn up and printed by Robur S.p.A.; whole or partial
reproduction of this Installation, use and maintenance manual is prohibited.
The original is led at Robur S.p.A.
Any use of this Installation, use and maintenance manual other than for personal consultation must be previously
authorised by Robur S.p.A.
The rights of those who have legitimately led the registered trademarks contained within this publication are not
aected.
With the aim of continuously improving the quality of its products, Robur S.p.A. reserves the right to modify the
data and contents of this Installation, use and maintenance manual without prior notice.
Revision: D
Code: D-LBR754EN
DISPOSAL
The appliance and all its accessories must be disposed of separately in accordance with the regulations in force.
Use of theWEEE symbol (Waste Electrical and Electronic Equipment) indicates that this product cannot be disposed of as house-
hold waste. Proper disposal of this product helps to prevent potential negative consequences for the environment and human
health.

Installation, use and maintenance manual – AD 3
I Introduction.......................................................................... p.4
I.1 Recipients................................................................ p.4
I.2 Control device ....................................................... p.4
II Symbols and denitions......................................... p.4
II.1 Key to symbols ...................................................... p.4
II.2 Signage applied on the appliance................. p.4
II.3 Terms and denitions ......................................... p.4
III Warnings................................................................................... p.4
III.1 General and safety warnings............................ p.4
III.2 Conformity.............................................................. p.5
III.3 Exclusions of liability and warranty ............... p.5
1 Features and technical data................................ p.7
1.1 Features.................................................................... p.7
1.2 Dimensions............................................................. p.8
1.3 Electrical wiring diagram................................... p.9
1.4 Controls.................................................................. p.10
1.5 Technical data...................................................... p.11
1.6 System operation ............................................... p.12
2 Transport and positioning.................................. p.13
2.1 Warnings................................................................ p.13
2.2 Handling................................................................ p.13
2.3 Storage................................................................... p.13
2.4 Appliance positioning ...................................... p.13
3 Heating engineer........................................................... p.17
3.1 Warnings................................................................ p.17
3.2 Hydraulic connections...................................... p.17
4 Electrical installer......................................................... p.18
4.1 Warnings................................................................ p.18
4.2 Electrical systems ............................................... p.18
4.3 Electrical power supply.................................... p.18
4.4 Control system..................................................... p.19
5 First start-up....................................................................... p.19
5.1 Preliminary checks............................................. p.19
5.2 Suggestions for the rst start-up.................. p.19
6 Normal operation......................................................... p.20
6.1 Warnings................................................................ p.20
6.2 Switch on and o................................................ p.20
7 Maintenance....................................................................... p.20
7.1 Warnings................................................................ p.20
7.2 End of season maintenance ........................... p.20
7.3 Pre-season maintenance................................. p.21
INDEX OF CONTENTS

Introduction
4
I
I INTRODUCTION
Installation, use and maintenance manual
This Manual is an integral part of the AD unit and
must be handed to the end user together with the
appliance.
I.1 RECIPIENTS
This Manual is intended for:
▶ End user, for appropriate and safe use of the appliance.
▶ Qualied installer, for correct appliance installation.
▶ Planner, for specic information on the appliance.
I.2 CONTROL DEVICE
In order to work, the AD unit requires a control device to
be connected by the installer (see Paragraph 1.4 p.10 ).
II SYMBOLS AND DEFINITIONS
II.1 KEY TO SYMBOLS
DANGER
WARNING
NOTE
PROCEDURE
REFERENCE (to other document)
II.2 SIGNAGE APPLIED ON THE
APPLIANCE
Live electrical parts: warns of danger from live
electrical parts.
Mechanical parts: warns of danger due to mov-
ing mechanical parts.
II.3 TERMS AND DEFINITIONS
Appliance / Unit = equivalent terms, both used to refer to
the evaporative cooler AD.
TAC = Technical Assistance Centre authorised by Robur.
III WARNINGS
III.1 GENERAL AND SAFETY WARNINGS
Installer's qualications
Installation must exclusively be performed by a
qualied rm and by skilled personnel, with specif-
ic knowledge on heating, hydraulic and electrical
systems, in compliance with the laws in force in the
Country of installation.
Declaration of conformity
Upon completing installation, the installing rm
shall issue to the owner/client the appliance's
workmanlike conformity declaration, according to
national/local regulations in force and the manu-
facturer's instructions/provisions.
Misuse
The appliance must only be used for the purpos-
es for which it has been designed. Any other use is
deemed hazardous. Incorrect use may aect oper-
ation, duration and safety of the appliance. Adhere
to the manufacturer's instructions.
Use of the appliance by children
The device can be used by children over 8 years
old, and by people with reduced physical, senso-
ry or mental capabilities, or lack of experience or
knowledge, only if they are under surveillance or
after they have received instructions regarding
safe use of the appliance and understanding the
dangers inherent in it. Children should not play
with the appliance.
Hazardous situations
Do not start the appliance in hazardous conditions,
such as: problems with the electrical system, disas-
sembled or damaged parts of the appliance, mal-
functioning, disabling or bypassing of control and
safety devices.
In case of danger, request intervention by qualied
personnel.
In case of danger, switch o the electrical power
supply only if this can be done in total safety.

Warnings
Installation, use and maintenance manual – AD 5
III
Do not entrust children, persons with physical,
sensory or mental disabilities or persons with poor
knowledge and experience with use of the appli-
ance.
Moving parts
The appliance contains moving parts.
Do not remove guards during operation, and in
any case prior to disconnecting the power supply.
Electrocution hazard
Disconnect the electrical power supply before any
operation on appliance components.
For electrical connections exclusively use compli-
ant components and according to the specica-
tions provided by the manufacturer.
Ensure the appliance cannot be accidentally
switched back on.
Earthing
Electrical safety depends on eective earthing sys-
tem, correctly connected to the appliance and in-
stalled according to the regulations in force.
Aggressive substances in the air
The air of the installation site must be free of any
aggressive substances or impurities that could con-
taminate the evaporative packs of the appliance.
Switching the appliance o
Except in the event of danger, do not disconnect
the power supply to switch o the appliance, but
always and exclusively act through the provided
control device.
In the event of failure
Operations on internal components and repairs
may exclusively be carried out by a TAC, using only
original parts.
In the event of failure of the appliance and/or
breakage of any component, do not attempt to
repair and/or restore and immediately contact the
TAC.
Appliance positioning
Do not install the machine in closed areas; it must
be installed outside the room to be treated, unless
by specic approval by the manufacturer.
First start-up
Do not operate the unit until the air supply duct
has been installed and connected.
Wastewater
During normal operation of the system in cooling
mode, the evaporation process produces an accu-
mulation of mineral salts and solid residues in the
waste water; this water is not potable.
Routine maintenance
Proper maintenance assures the eciency and
good operation of the appliance over time.
Maintenance must be performed according to the
manufacturer's instructions (see Chapter 7 p. 20 )
and in compliance with current regulations.
Enter into a maintenance contract with an author-
ised specialised rm for routine maintenance and
for servicing in case of need.
Use only original parts.
Keep the Manual
This Installation, use and maintenance manual
must always accompany the appliance and must
be handed to the new owner or installer in the
event of sale or removal.
III.2 CONFORMITY
EU directives and standards
The AD evaporative coolers comply with the essential re-
quirements of the following Directives:
▶ 2014/30/EC "Electromagnetic Compatibility Directive"
as amended and added.
▶ 2014/35/EC "Low Voltage Directive" as amended and
added.
▶ 2006/42/EC "Machine Directive" as amended and add-
ed.
▶ 327/2011/EU "Ecodesign requirements for fans" as
amended and added.
Other applicable provisions and standards
The design, installation, operation and maintenance of
the systems shall be carried out in compliance with cur-
rent applicable regulations, depending on the Country
and location, and in accordance with the manufacturer's
instructions. In particular, regulations regarding the fol-
lowing shall be complied with:
▶ Electrical systems and equipment.
▶ Any other applicable law, standard and regulation.
III.3 EXCLUSIONS OF LIABILITY AND
WARRANTY
Any contractual or extra-contractual liability of the
manufacturer for any damage caused by incorrect
installation and/or improper use and/or failure to
comply with regulations and with the manufactur-
er's directions/instructions shall be disclaimed.
In particular, the warranty on the appliance may be

Warnings
6
III
rendered void by the following conditions:
Incorrect installation.
Misuse.
Failure to comply with the manufacturer's indica-
tions on installation, use and maintenance.
Alteration or modication of the product or any
part thereof.
Extreme operational conditions or however out-
side of the operational ranges set forth by the
manufacturer.
Damages caused by external agents such as salts,
chlorine, sulphur or other chemical substances
present in the air of the installation site and/or in
the water supply to the appliance.
Abnormal actions transmitted to the appliance by
the system or installation (mechanical stresses,
pressure, vibrations, thermal expansion, electrical
surges...).
Accidental damages or due to force majeure.

Features and technical data
Installation, use and maintenance manual – AD 7
1
1 FEATURES AND TECHNICAL DATA
1.1 FEATURES
1.1.1 Available range
The AD evaporative coolers are available in two models,
whichdier in themaximum airowthat canbe delivered:
▶ AD14 with air ow up to 13000 m³/h
▶ AD20 with air ow up to 20000 m³/h
Three dierent versions are available for each model, two
of which are equipped with an independent basic (ECO)
or advanced (EVO) remote control for each unit, and the
third (SC) is suitable for the centralised management of a
system composed of a maximum of 30 units, to be associ-
ated with a centralised control system, supplied by Robur.
The three versions can be summarized as follows:
▶ AD14/AD20 ECO: equipped with the basic ECO remote
control (Paragraph 1.4.2 p.10 ).
▶ AD14/AD20 EVO: equipped with the advanced EVO
remote control (Paragraph 1.4.3 p.10 ).
▶ AD14/AD20 SC: without individual remote control,
but designed for a centralised control (Paragraphs
1.4.4 p.10 and 1.4.5 p.11 ).
1.1.2 Operation
To improve the summer microclimate inside an industri-
al, commercial or another type of room, it is necessary to
ventilate the room with many fresh and ltered air chang-
es, possibly cooled. In the case of large rooms, for example
industrial ones, an air cooling system is often not advisa-
ble because, due to the large volume of air to be cooled
and the thermal loads of the processes to be neutralized,
the amount of energy required is very high and the cool-
ing eect is reduced by the exhaust air extraction systems
and by the frequent opening of the doors to carry out the
activity.
An excellent solution is represented by an evaporative
cooling system that cools the air with a natural principle:
the air passes through special lters wet with water, trans-
fers part of its heat during the process of evaporation of
the water and lowers its temperature. The absence of re-
frigeration machines reduces energy consumption to a
minimum and allows large volumes of air to be treated for
the many necessary air renewals.
The AD evaporative cooler can be installed in all environ-
ments where it is necessary to improve the microclimate,
where it is necessary to ventilate the environment with
many fresh and ltered air changes, possibly cooled, such
as:
▶ production and crafts premises
▶ commercial premises and warehouses
▶ sports premises in general

Features and technical data
8
1
1.2 DIMENSIONS
Figure1.1AD14 dimensions
A Water inlet 3/8" M
B Water drain 60 mm M
C Electrical panel
B
A
C
600
660
630
600 660 630
B
C
A
D
D
D-D
1150
209
65
320
595
280
555
170
38
1150
1050
117
110
440
80
217112
243
86

Features and technical data
Installation, use and maintenance manual – AD 9
1
Figure1.2AD20 dimensions
A Water inlet 3/8" M
B Water drain 60 mm M
C Electrical panel
AB
CB
CA
150
530
825
825
1185
1215
1245
590
660 620
1150
1050
130
165
280
80
530
189
128
592.5 592.5
261.5
195
85170
205
D
D
D-D
1650
1.3 ELECTRICAL WIRING DIAGRAM
Figure1.3Electrical wiring diagram
1 Onboard electrical panel
2 Power supply 230V - 50 Hz
3 Remote control
4 20 AWG 5x0,5 mm2shielded cable
5 Do not connect
A1 Main switch onboard the appliance
BRO Brown
WHI White
GRE Green
YEL Yellow
GRY Grey
V+ L1 L2 V- M/S
X
A1
1
2
V- L2 L1 V+
A3
3
4
5
MAX 25 m BRO
WHI
GRE
YEL
GRY

Features and technical data
10
1
1.4 CONTROLS
1.4.1 Control device
The operation of the appliance is controlled by a remote
control, available in the following versions:
1. ECO basic remote control (versions AD14/AD20 ECO)
2. EVO advanced remote control (versions AD14/AD20
EVO)
3. OCDS010/OCDS011 centralised control combined
with OCDS009 network board (AD14/AD20 SC
versions)
4. Centralised control with ODSP035 router (one AD14/
AD20 ECO or EVO and up to 4 AD14/AD20 SC)
1.4.2 ECO basic remote control
Figure1.4ECO basic remote control
The ECO basic remote control is the basic control system
for AD evaporative coolers.
The features of the ECO basic remote control are:
▶ Turning the appliance on and o.
▶ Cooling/ventilation selection.
▶ Ventilation speed selection (3 levels).
▶ Diagnostics of any faults.
All settings must be made manually, as there is no time
programming for this control.
For further information refer to the instruction
sheet supplied with the ECO remote control.
1.4.3 EVO advanced remote control
Figure1.5EVO advanced remote control
The EVO advanced remote control is the advanced con-
trol system for AD evaporative coolers, which includes a
humidity and temperature probe already installed and
connected to the control.
The features of the EVO advanced remote control are:
▶ Automatic/manual operation selection.
▶ Cooling/ventilation selection.
▶ Automatic or manual selection of the ventilation
speed (3 levels).
▶ Room temperature detection by integrated thermo-
stat.
▶ Ambient humidity detection by integrated humidistat.
▶ Automatic operation based on the setpoint.
▶ Daily programming of the operating time schedule.
▶ Diagnostics of any faults.
The EVO control can guarantee automatic regulation of
the cooler, thanks to the temperature and humidity probe,
being able to adjust the fan speed accordingly on the 3
available levels. With the EVO control, it is also possible to
set a daily time program, being able to set the cooling or
fan-only mode.
For further information refer to the instruction
sheet supplied with the EVO remote control.
1.4.4 OCDS010/OCDS011 centralised control
Figure1.6OCDS009 network board
Figure1.7OCDS010/OCDS011 centralised control
The OCDS010/OCDS011 centralised control allows cen-
tralised management of systems consisting of several SC
version cooling units (up to a maximum of 30).
The functions of the centralised control are:
▶ Display and setting of date and time on network
boards.
▶ Display of temperature and humidity measured by
network boards.
▶ Display and change of temperature and relative hu-
midity setpoints for each network board.
▶ Display and change network device parameters (net-
work boards and coolers).
▶ Switching on/o of each individual network board.

Features and technical data
Installation, use and maintenance manual – AD 11
1
▶ Daily programming of the operating time schedule of
the whole system.
▶ Selection of automatic/manual/o operation for each
individual cooler.
▶ Cooling/fan-only/o selection for each individual
cooler.
▶ Diagnostics of any faults.
▶ Keyboard lock via key (supplied).
Each cooler must be in SC version (without individual
control) and must be equipped with a network board (op-
tional OCDS009, with temperature and humidity probe al-
ready mounted and connected to the board), which com-
municates with the centralised control panel via SC bus
(OCDS010) and possibly provides an additional Modbus
interface (OCDS011).
OCDS010 is the version of the centralised control that
communicates exclusively via SC bus, suitable if the cen-
tralised control is not connected to other external super-
visory devices.
OCDS011 is the version of the centralised control that
communicates with the network boards via SC bus, but
has an additional Modbus interface, suitable for connec-
tion to external supervision systems (e.g. a BMS).
For further details please refer to the instruction
sheet supplied with the OCDS009 network board
and the OCDS010/OCDS011 centralised control.
1.4.5 Centralised control via ODSP035 router
Figure1.8ODSP035 router
The purpose of the ODSP035 router is to replicate, on
several AD coolers, the commands from a single ECO/EVO
control, which normally controls only one AD.
The AD cooler used as master will be of the ECO or EVO
type, while the other AD coolers must be of the SC type,
i.e. without control.
The ODSP035 router can manage a maximum of 5 AD
coolers, divided between a master and 4 slaves.
For further information refer to the instruction
sheet supplied with the ODSP035 router.
1.4.5.1 ODSP036 extension board
Figure1.9ODSP036 extension board
A Extension board B Plastic box
A B
The ODSP036 extension board is an electronic control
board, functionally identical to the one onboard the AD
coolers, provided with the relative plastic housing box.
The extension board is used to control the operation of
devices other than coolers, typically air extractors, so that
they can be operated in a similar way to coolers.
The ODSP036 extension board must necessarily be com-
bined with the ODSP035 router or the OCDS009 network
board, available as optional.
For further information please refer to the instruc-
tion sheets for the specic devices.
1.5 TECHNICAL DATA
Table1.1Technical data
AD14 AD20
Installation data
Air ow
at maximum speed m³/h 13000 20000
at average speed m³/h 9700 15000
at minimum speed m³/h 6500 10000
fan type - axial
maximum useful pressure head Pa 80
water consumption l/h 43 (1) 64 (1)
Water inlet type - M
thread “ 3/8
(1) Test conditions: outdoor temperature 33 °C, relative humidity 60%.
(2) Maximum sound pressure levels in free eld, with directionality factor 2, obtained from the sound power level in compliance with standard EN ISO 9614.

Features and technical data
12
1
AD14 AD20
Water drain type - M
diameter (Ø) mm 60
Humidifying panel
surface m² 2,7 3,4
thickness mm 100
saturation eciency % 89 87
sound power Lw
at maximum speed dB(A) 94,0 90,0
at average speed dB(A) 85,0 82,0
at minimum speed dB(A) 80,0 77,0
sound pressure Lpat 5 m
at maximum speed dB(A) 72,0 (2) 68,0 (2)
at average speed dB(A) 63,0 (2) 60,0 (2)
at minimum speed dB(A) 58,0 (2) 55,0 (2)
Dimensions
width mm 1150 1650
depth mm 1150
height mm 1050
Air delivery outlet width mm 600 1185
height mm 600 590
Weight weight kg 67 120
in operation kg 88 146
Electrical specications
Power supply
voltage V 230
type - single-phase
frequency Hz 50
Electrical power absorption nominal kW 1,10 1,90
maximum power consumption A 4,8 7,0
(1) Test conditions: outdoor temperature 33 °C, relative humidity 60%.
(2) Maximum sound pressure levels in free eld, with directionality factor 2, obtained from the sound power level in compliance with standard EN ISO 9614.
1.6 SYSTEM OPERATION
1.6.1 Ventilation and cleaning of the room
The evaporative cooling system is a system that works dy-
namically and works on the basis of a natural principle: it
introduces large quantities of cooled external air into the
room and extracts the exhausted hot air through doors,
windows and other evacuation openings that are left
open.
The operating principle is very simple: if the system expels
all the introduced air, the system produces maximum ef-
ciency, grants all the planned air renewals and cools the
environment under the design conditions.
It is also possible to have a slightly lower extract air ow
than the supplied one (but not less than 80%), which al-
lows the room to be kept slightly overpressurised com-
pared to the outside, preventing the outside hot air from
re-entering the room through the natural openings.
The ideal condition is to place the air diusers away from
the openings (windows, doors, etc.) and distribute them
evenly inside the room. By opening a window away from
the diusers, the air passes through the room cooling it
before being extracted. By calculating the correct dimen-
sions of the evacuation openings the maximum eciency
of the system is reached. The system must be able to ex-
tract the large volume of air supplied so as not to reduce
the eectiveness of the system.
If the available openings are not sucient, it is necessary
to add forced air extraction systems (extraction towers).
Failure to comply with these conditions precludes the
planned air renewal, reduces the cooling eect and in-
creases the relative humidity inside the room.
To extract the exhaust air, natural openings of about 1 m2
per 1000 m3of air are required.
1.6.2 Performances of the system
the system increases its air cooling capacity as the relative
humidity of the outside air decreases: the drier the fresh
outside air is, the higher the possibility of saturation, the
higher the reduction of the sensible heat contained in it,
therefore the greater the achievable decrease in the air
temperature.
The AD evaporative cooler is equipped with a high satu-
ration eciency evaporating unit which produces a good
level of cooling even at relative air humidity values of
around 70%.
In areas with high humidity, the cooler must be oversized
to ensure improved air renewal, so as to compensate for
the smaller temperature dierence. In these areas, maxi-
mum cooling will be achieved by ensuring that there are
the correct air changes and that the unit is put into oper-
ation early in the morning to stop the increase of latent
heat within the cooled space. In the design phase, howev-
er, it is advisable to consider the local climatic conditions.
On days when the external relative humidity rate is close
to or higher than 70÷75%, it is advisable to operate the
unit in ventilation mode only.
The cooling eciency is not only related to the eciency
of the appliance, but also to the design of the ductwork
and the installation. Insulated ceilings will decrease the
internal temperature signicantly compared to non-in-
sulated ceilings. The same concept is applicable for air
ducting.

Transport and positioning
Installation, use and maintenance manual – AD 13
2
2 TRANSPORT AND POSITIONING
2.1 WARNINGS
Damage from transport or installation
The manufacturer shall not be liable for any dam-
age during appliance transport and installation.
On-site inspection
Upon arrival at the site, ensure there is no transport
damage on packing, metal panels or the remote
control.
After removing the packing materials, ensure the
appliance is intact and complete.
Packing
Only remove the packing after placing the appli-
ance on site.
Do not leave parts of the packing within the reach
of children (plastic, polystyrene, nails...) since they
are potentially dangerous.
Weight
The lifting equipment must be suitable for the load.
2.2 HANDLING
2.2.1 Handling and lifting
▶ Always handle the appliance in its packing, as deliv-
ered by the factory.
▶ Comply with safety regulations at the installation site.
Figure2.1Lifting with a forklift
Widen the forks as much as possible to balance the
load.
Figure2.2Lifting with cables
It is strongly recommended to apply the ropes as shown
in Figure 2.2 p. 13 interposing spacers of adequate
length to prevent the ropes from damaging the casing
when tightened.
It is absolutely forbidden to stand under the sus-
pended loads and within the operating range of
the lifting equipment.
2.3 STORAGE
During transport and storage, make sure that
the ambient temperature is between -10 and 50
°C.
If the evaporative cooling unit must be stored, make sure
that the relative humidity in the warehouse is between
5% and 90%.
2.4 APPLIANCE POSITIONING
Do not install the machine in closed areas; it must
be installed outside the room to be treated, unless
by specic approval by the manufacturer.
2.4.1 Roof installation
How to mount the unit on the roof
1. Prepare and secure a anged air inlet duct having
the same dimensions as the appliance's anged duct
trunk (Paragraph 1.2 p. 8 ), which must be secured

Transport and positioning
14
2
to the ange of the previously prepared duct (Figure
2.3 p.14 ).
Figure2.3Prepare a anged duct.
2. Bring the base of the evaporative cooler to the mount-
ing point (Figure 2.4 p.14 ).
Figure2.4Bringthebaseoftheevaporativecoolertothemount-
ing point.
3. Secure the two anges (base duct ange-inlet duct
ange) by bolting.
4. It is recommended to place some silicon paste be-
tween the two anges connections to ensure perfect
insulation from external agents.
5. Position and secure the uprights at the base of the
cooler using the screws provided (Figure 2.5 p.14 ).
Figure2.5Position and secure the uprights at the base of the
cooler
6. Check the tightening of the hose clamp on the hose
connected to the pump (Figure 2.6 p.14 ).
Figure2.6Check the tightening of the hose clamp on the hose
connected to the pump
7. Apply the humidifying panels leaning them against
the uprights, keeping the groove, obtained on one
side of the panel, upwards and towards the outside of
the appliance (Figure 2.7 p.14 ).
Figure2.7Apply the humidifying panels leaning them against
the uprights
8. Insert the water distribution stripes into the pad
grooves. Check that these are pressed down rmly to
the bottom of their seat (Figure 2.8 p.14 ).
Figure2.8Insert the water distribution stripes into the pad
grooves
9. Insert the water distributor into the grooves of the
humidifying panels making sure that its supports rest
evenly on the pad grooves (Figure 2.9 p.15 ).

Transport and positioning
Installation, use and maintenance manual – AD 15
2
Figure2.9Insert the water distributor
10.Keep the hose holder on the side of the appliance
where the water pump is, taking care to make an
opening in the humidifying panel at the hose holder
to allow it to pass through.
11.Connect the exible hose coming from the pump to
the distributor tting and secure it with a hose clamp
(Figure 2.10 p.15 ).
Figure2.10Connect the exible hose coming from the pump to
the distributor tting
12.Insert the side and rear grates of the appliance, x-
ing them with the clips provided. Do not mount the
grate on the front side (component/ connection side)
(Figure 2.11 p.15 ).
Figure2.11Insert the side and rear grates of the appliance
13.Insert the clips on both sides of the grate, initially up to
the "rst click" and then force them until they are com-
pletely inserted so that they do not protrude, in height,
beyond the humidifying panels (Figure 2.12 p. 15
and Figure 2.13 p.15 ).
Figure2.12Secure by using the clips provided
Figure2.13Insert the clips on both sides of the grate
14.Position the cap without securing it so that the front
grate can be tted later. Raise the cap until the grate is
properly seated (Figure 2.14 p.15 ).
Figure2.14Position the cap
15.Do not secure the front grate with clips as this would
prevent easy access to the inside of the appliance for
any maintenance operations.
16.Once the protection grates have been positioned, se-
cure the cap with the screws provided.
2.4.2 Wall/window mounting
How to mount the unit on the wall/window
1. Prepare and secure a machine support frame and a
anged air inlet duct having the same dimensions as
the anged duct trunk of the appliance, which must
be secured to the ange of the previously prepared
duct (Figure 2.15 p.16 ).

Transport and positioning
16
2
Figure2.15Prepare and secure a machine support frame and
a anged duct
2. Check that the support frame is able to support the
weight of the appliance and that it does not cause vi-
brations and that it is perfectly horizontal (use a level
to check the position).
3. Bring the evaporative cooler to the mounting point
(Figure 2.16 p.16 ).
Figure2.16Bring the evaporative cooler to the mounting point
4. Secure the two anges (base duct ange-inlet duct
ange) and the base to the frame by bolting.
5. It is recommended to place some silicon paste be-
tween the two anges connections to ensure perfect
insulation from external agents.
2.4.3 Other notes
Prepare the anchorage points inside the building for the
support chains of the air intake duct. These must be de-
ned in such a way that the chains do not cause excessive
stress on the duct itself. Ensure that the duct is aligned
with the appliance.
For anchoring ducts to the ceiling or wall, use chains and
relative accessories with a test certicate, made of gal-
vanised or stainless steel, with a wire diameter of no less
than 3 mm or in any case sized in relation to the weight it
will have to bear, taking into account the safety margins
imposed by the standards.
Do not use aluminium alloy or similar components.
The ducts must be sized according to the system
and the aeraulic characteristics of the fan. An incor-
rect calculation of the ducts causes losses or excess
output causing possible faults.
After installing the system, turn the diuser louvres out-
wards and adjust them optimally to direct the airow.
2.4.4 Installation examples
The following Figures show installation examples.
Figure2.17Installation example
1 Galvanized or stainless steel chains for xing the ducts to the
ceiling
2 Duct with anges and neoprene gaskets
3 2-way diuser with adjustable louvres
4 Wall
5 90° curve with anges and neoprene gaskets
6 Support frame
1
2
3
4
5
6
≥ 0,4 m
≥ 1 m

Heating engineer
Installation, use and maintenance manual – AD 17
3
Figure2.18Installation example
1 Skylight
2 Coverage
3 Stainless steel brackets
4 Duct with anges and neoprene gaskets
5 6-way diuser with adjustable louvres
6 Dowels to secure the brackets to the ceiling
7 Screws to secure the duct to the brackets
8 Galvanized or stainless steel chains for xing the ducts to the ceiling
1
2
3
4
5
6
7
8
Figure2.19Installation example
1 Support frame
2 Duct with anges and neoprene gaskets
3 Galvanized or stainless steel chains for xing the ducts to the
ceiling
4 6-way diuser with adjustable louvres
5 45° curve with anges and neoprene gaskets
6 Duct with anges and neoprene gaskets
1
2
36
5
4
3 HEATING ENGINEER
3.1 WARNINGS
3.1.1 General warnings
Read the warnings in Chapter III.1 p. 4 , pro-
viding important information on regulations and
on safety.
Compliance with installation standards
Installation must comply with applicable regula-
tions in force, based on the installation Country
and site.
Installation must also comply with the manufactur-
er's provisions.
3.2 HYDRAULIC CONNECTIONS
3.2.1 Plumbing ttings
at the bottom (Figure 1.1 p.8 and Figure 1.2 p.9 ).
A. Water inlet 3/8" M
B. Water drain 60 mm M
3.2.2 Connection to the water supply
Always provide, near the appliance:
▶ on the inlet water piping
isolation ball valve
sand lter
softening system (in the case of hardnesses > 27 °f)
▶ on the output water piping
drainage system for emptying the system before
the winter season
The water supply system must grant a minimum
ow rate of 7 l/min for each unit at a pressure of
1,5÷3 bar (maximum allowed pressure: 6 bar).
It is recommended to build the water pipe inside
the building, otherwise provide a properly insu-
lated pipe.
It is recommended to use drinking water, of hardness not
exceeding 27 °f and not less than 7 °f.
Don’t use demineralized water.
Proceed to connect the 3/8" M sleeve to the main water
supply without stressing it excessively (Figure 3.1 p.18 ).

Electrical installer
18
4
Figure3.1Connecting the 3/8" sleeve to the water mains
The machine is also equipped with a threaded sleeve Ø 60
mm M for water drainage.
Connect the exible hose (supplied) to the sleeve, xing
it by means of a hose clamp, taking care not to stress the
sleeve and absolutely preventing it from rotating (Figure
3.2 p.18 ).
Figure3.2Connect the exible hose to the sleeve
If there is a central drainage system, convey the pipe to
the central drainage system in accordance with the regu-
lations in force in the country of installation.
4 ELECTRICAL INSTALLER
4.1 WARNINGS
General warnings
Read the warnings in Chapter III p. 4 , provid-
ing important information on regulations and on
safety.
Compliance with installation standards
Installation must comply with applicable regula-
tions in force, based on the installation Country
and site, in matters of safety, design, implementa-
tion and maintenance of electrical systems.
Installation must also comply with the manufactur-
er's provisions.
Live components
After placing the appliance in the nal position,
and prior to making electrical connections, ensure
not to work on live components.
Earthing
The appliance must be connected to an eective
earthing system, installed in compliance with reg-
ulations in force.
It is forbidden to use gas pipes as earthing.
Cable segregation
Keep power cables physically separate from signal
ones.
Do not use the power supply switch to turn the
appliance on/o
Never use the power supply switch to turn the ap-
pliance on and o, since it may be damaged in the
long run (occasional blackouts are tolerated).
To turn the appliance on and o, exclusively use
the suitably provided control device.
4.2 ELECTRICAL SYSTEMS
Electrical connections provide:
A. Power supply (Paragraph 4.3 p.18 ).
B. Control system (Paragraph 4.4 p.19 ).
How to make connections
All electrical connections must be made in the connection
terminal block located near the electrical panel:
1. Ensure the appliance is not live.
2. To access the electrical panel, open the electrical
box located on the air duct ange (detail C of Figure
1.1 p.8 and Figure 1.2 p.9 ).
3. Identify the appropriate connection terminals.
4. Perform the connections as shown in Figure 1.3 p.9 .
5. Close the electrical panel.
4.3 ELECTRICAL POWER SUPPLY
4.3.1 Power supply line
Provide (by the installer) a protected single-phase line
(230 V - 50 Hz) with:
▶ Cable type H05 VVF 3x1,5 mm2.
▶ Bipolar disconnector with minimum contact opening
of 3 mm.
▶ Magnetothermic breaker.
How to connect the power supply
To connect the three-pole power supply cable:

First start-up
Installation, use and maintenance manual – AD 19
5
1. Access the connection terminal block according to
Procedure 4.2 p.18 .
2. Connect the three wires to the terminal block as shown
in Figure 1.3 p.9 .
3. Provide the earth lead-in wire longer than live ones
(last to be torn in the event of accidental pulling).
4.4 CONTROL SYSTEM
To connect the remote control use a shielded cable 20
AWG 5x0,5 mm2with a maximum length of 25 meters.
Perform the connections as shown in Figure 1.3 p.9 .
For further information refer to the instruction
sheet supplied with the specic remote control.
4.4.1 Positioning the control system
Install the selected control system according to the fol-
lowing guidelines:
▶ At about 1,5 m from the oor, protected against air
draughts, direct exposure to sun rays and direct heat
sources (lamps, air ow from the unit itself, etc.).
▶ If possible, do not place the control system on walls
bordering the outside, to avoid false temperature
readings and therefore aect system operation. If this
is not possible, shield the control system by placing a
sheet of insulating material (cork, polystyrene or other
similar) between the control system and the wall.
By following the above guidelines, unwanted
starting and stopping of the system can be avoided
and optimal comfort in the heated space can be
guaranteed.
4.4.2 Dip switch position
The evaporative coolers have a dip switch on the
electronic board, whose position must be changed
if the ECO control is used rather than EVO:

OFF
OFF: when using the EVO control

ON
ON: when using the ECO control
Figure4.1Dip switch position
ON
OFF
Change the position of the dip switch only when
the appliance is switched o.
5 FIRST START-UP
The installer is obliged to carry out preliminary checks de-
scribed in Paragraph 5.1 p.19 .
5.1 PRELIMINARY CHECKS
Paragraph dedicated to the installer.
5.1.1 Preliminary checks for rst start-up
Upon completing installation, the installer must check:
▶ Electrical system suitable for the required capacities
and equipped with all safety and control devices re-
quired by the regulations in force.
▶ Power supply mains complying with the appliance's
rating plate data.
▶ Appliance correctly installed, according to the manu-
facturer's instructions.
▶ System installed in a workmanlike manner, according
to national and local regulations.
5.1.2 Abnormal or hazardous installation
situations
Should any abnormal or hazardous installation situations
be found, the appliance shall not be commissioned.
These situations may be:
▶ Conditions that do not warrant access and mainte-
nance in safety.
▶ Appliance switched on/o with the main switch, in-
stead of the provided control device.
▶ Appliance defects or faults caused during transport or
installation.
▶ All situations that may involve operation abnormali-
ties or are potentially hazardous.
5.1.3 Non-compliant system and corrective
actions
In case of intervention of a TAC, should it nd any non-con-
formities, the user/installer is bound to perform any cor-
rective procedures required by the TAC.
After performing the remedial actions (the installer's re-
sponsibility), if the TAC deems that safety and conformity
conditions are in place, rst start-up may be eected.
5.2 SUGGESTIONS FOR THE FIRST START
UP
For optimal operation of the appliance, it is essential

Normal operation
20
6
that the fan is set to the minimum speed when it is rst
switched on and that it is maintained for at least one day.
Failure to carry out the above procedure could
cause, only for the rst day of use, a malfunction of
the evaporating panels with consequent outow
of water drops from the ducts.
In the rst few hours after the cooling system is rst put
into operation, an unusual smell may be felt, due to the
wetting of the treated cellulose materials that make up
the evaporative panels. The duration of this phenome-
non is however limited to a few hours and the substances
emitted are not harmful in any case.
The fan motor may also emit a particular smell for a short
period of time, caused by the initial heating and residues
of oils or paints on the surface of the motor itself.
6 NORMAL OPERATION
This section is for the end user.
6.1 WARNINGS
General warnings
Prior to using the appliance carefully read the
warnings in Chapter III.1 p. 4 , providing impor-
tant information on regulations and on safety.
Never power the appliance o while it is run-
ning
NEVER power the appliance o while it is running
(except in the event of danger, Chapter III.1 p.4 ).
6.2 SWITCH ON AND OFF
Routine switching on/o
The appliance may exclusively be switched on/o
by means of the suitably provided control device.
Checks before switching on
Before switching on the appliance, ensue that:
water valve open
appliance electrical power supply (main switch ON)
connection and any necessary power supply of the
control device
6.2.1 Control device
The AD evaporative coolers must be equipped with a re-
mote control that allows their operation.
Paragraph 1.4 p.10 details the types of controls availa-
ble and their features.
For details about the operating modes, refer to the
instruction sheet supplied with the specic remote
control used.
7 MAINTENANCE
7.1 WARNINGS
Correct maintenance prevents problems, assures
eciency and keeps running costs low.
Maintenance operations described herein may be
performed by theTAC or skilled maintenance tech-
nician.
Any operation on internal components may exclu-
sively be performed by the TAC.
Before performing any operation, switch o the
appliance by means of the control device and wait
for the end of the shutdown cycle, then disconnect
power supply, by acting on the electrical discon-
nector.
7.2 END OF SEASON MAINTENANCE
▶ Disconnect the unit from the power supply using the
main power switch.
▶ Close the water supply.
▶ Empty the water supply system to prevent failures due
to freezing.
▶ Remove the appliance cap.
▶ Check that the water ducts are clean and that there are
no obstructions in the water distributor, at the top of
the unit. Remove any debris from the water recircula-
tion pump's oat.
▶ Gently, but thoroughly, clean the base of the unit. Use
a mild detergent, but not a solvent as it may react with
the plastic material.
▶ Replace the cover and make sure that it is securely fas-
tened with the appropriate bolts.
▶ Apply the protection cover (optional OCPR003) to the
appliance, checking in advance that it is not damaged
and, if it is, check that it can be repaired, otherwise re-
place it.