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.