UTEK aura evo Quick start guide

HEAT RECOVERY VENTILATION UNITS for RESIDENTIAL BUILDINGS
GUIDE FOR INSTALLATION, USE AND MAINTENANCE
indoor air quality and energy saving
AURA/ AURA evo
indoor air quality and energy saving indoor air quality and energy saving

TABLE OF CONTENTS
GENERAL INFORMATION
INTRODUCTION
FUNDAMENTAL SAFETY RULES
SYMBOLS
WARNING SIGNS
COMPLIANCE
IDENTIFICATION
OPERATION
PRECAUTIONS BEFORE STARTING THE UNIT
DISASSEMBLY AND DISPOSAL OF THE UNIT
INSTALLATION OF THE UNIT
POSITIONING AND ASSEMBLY OF THE UNIT
ELECTRICAL CONNECTIONS
ELECTRONIC VERSION CONFIGURATION
START-UP AND USE
MAINTENANCE
ALARMS
ACCESSORIES
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Dear Customer
Thank you for your interest in UTEK. Our product is
designed and manufactured to provide the User
with real values: Quality, Safety and Saving on
consumption.
UTEK S.r.l.

1. GENERAL INFORMATION
1.1 INTRODUCTION
The purpose of this manual is to easily guide you through the
installation and management of your device. The following tips
will help you achieve the best possible performance of the
product you purchased. Thank you for choosing our product.
Read the instructions contained in this handbook carefully
before operating this unit. Do not install or operate the unit
unless you have read and fully understood the entire contents
of this manual. Please make sure you take all precautions listed
in the manual. When installing the unit, please take into
account not only the technical requirements necessary to
ensure its proper operation, but also any local laws and speci-
fic requirements in force. Make sure that the unit has not been
damaged in any way during shipment. If the unit is noticeably
damaged at the time of delivery, make a note on the freight
bill before signing it. This manual reflects the state-of-the-art at
the time the machine is placed on the market and cannot be
considered inadequate just because of further update accor-
ding to new experience. The Manufacturer reserves the right to
make changes to the production and manuals without being
obliged to update the ones previously supplied, except where
exceptional circumstances exist. For further information, upda-
tes on the technical documentation and proposals on how to
improve this manual, please do not hesitate to contact the
Manufacturer's Sales Office. All proposals will be thoroughly
examined by our staff.
1.2 FUNDAMENTAL SAFEY RULES
We remind you that the use of products made up of power
components and moving mechanical parts implies some
fundamental safety rules to comply with:
-This unit is not intended for use by disabled and infirm people
without supervision.
-Do not touch the unit with wet or damp hands and bare feet.
-Always switch off and disconnect the unit from the mains grid
before carrying out any cleaning operations.
-Do not perform any changes to the safety or adjusting
devices without the Manufacturer's prior authorisation and
instructions.
-Do not pull, remove and twist any electrical cables coming
out from the unit, even though the latter is disconnected from
the mains grid.
-Do not allow objects and chemical substances to enter the
inlet and outlet grilles.
-Always switch off the unit before opening the doors that allow
access to the unit internal
components.
-Do not leave the packaging material within the reach of
children as it could represent a potential source of harm.
-Maintain a safe distance between the machine and other
equipment to allow sufficient room for maintenance and
service operations as described in this handbook.
-Cables of adequate cross section must be used to power
the unit. Voltage and frequency values must correspond to
those referred to for the respective machines; all machines
must be connected to ground according to the laws and
regulations in force in the different countries.
1.3 SYMBOLS
The symbols shown in this handbook provide the User with
the information needed to properly operate the unit.
Safety symbols
CAUTION, AUTHORIZED PERSONNEL ONLY
The symbol alerts the User that the actions are crucial to
ensure the safe operation of the machines.
DANGER, ELECTRIC SHOCK RISK
The symbol alerts the User that the non-compliance with
safety rules may result in electric shock.
DANGER
The symbol alerts the User that the non-compliance with
safety rules may result in a risk of
injury to people exposed
WARNING
The symbol alerts the User that the non-compliance with
safety rules may result in a risk of
damage to the unit or system.
1.4 WARNING SIGNS
The installation of the unit must only be carried out by quali-
fied personnel according to the laws and regulations in
force in the different countries. If not carried out correctly,
the installation may result in a potentially hazardous situa-
tion.
You should avoid installing the unit in moist rooms or near
sources of heat.
3

OPERATION
The heat recovery ventilator has the following characteristi-
cs:
- It promotes ventilation inside residential buildings by provi-
ding fresh air into the rooms and extracting excessive moistu-
re and bad smells.
- It helps you save on your heating bill thanks to the efficien-
cy of the heat recovery unit.
- The low-load-loss G3 filter provides outdoor air filtering,
which is extremely important for people with allergies.
- The speed electronically controlled motor enables you to
save power.
- Easy inspection and maintenance operations thanks to the
snap closure door.
- Pre-set for connection to the grid and of the remote
control.
To prevent any risk of electrocution, switch off the unit before
carrying out any Melectrical connections and maintenance
operations.
Once the electrical cables are connected, make sure they
are positioned in such a way so as to prevent excessive
pressure on the electrical covers and panels; incomplete
connection of the cables may cause terminal overheat.
Any installation not compliant with the instructions contai-
ned in this manual or any use made outside the recommen-
ded operation limits will immediately void the warranty.
Make sure that all installation and starting operations are
carried out by qualified personnel.
1.5 COMPLIANCE
The unit complies with the following directives:
- 2006/95/CE Low Voltage Directive
- 2004/108CE Electromagnetic Compatibility Directive
1.6 IDENTIFICATION
-The unit can be identified through the plate placed inside its
cover. The same plate is shown here on the side as referen-
ce.
-Another plate reporting the unit model and shipment details
will be present on the packaging. The plate placed on the
packaging does not have any value in terms of traceability
of the product in the years following its purchase
The removal, deterioration and illegibility of the plate placed
on the unit may cause significant problems in terms of identi-
fication of the machine, retrieval of spare parts and any
future maintenance operations.
4

5
The supply includes:
MASTER AND SLAVE VERSION ONLY MASTER VERSION
1 – Ventilating unit 2 – Ceramic heat exchanger 3 – Telescopic duct 4 – External grille 5 - Control unit 6 - Power supply
ACCESSORIES:
– Predisposing kit – Unit insulation kit - Corner exit kit - Fixing wall template - External aesthetic grid
- Replacement filter - Replacement regenerator Aesthetic cover
PRECAUTIONS BEFORE STARTING THE UNIT
Before starting the unit, make sure that external objects are not present inside it. Check the closing panel and inspection door
fasteners. Check the unit power supply and grounding
DISASSEMBLY AND DISPOSAL OF THE UNIT
Do not disassemble or dispose of the product by yourself. The disassembly, demolition and disposal of the product must be carried out
by authorized personnel in compliance with local laws and regulations.
1
2
3
4

The installation of this unit must be performed in compliance with the national and local laws and regulations governing the use of electri-
cal devices and according to the following instructions:
-Install the unit inside residential buildings with ambient temperature between 0°C and 45°C.
-Avoid areas near heat sources, vapour, flammable and/or explosive gases and dusty areas.
-The wall thickness must be adequate to the unit and must not cause vibrations.
The installation requires:
-A hole to connect the air duct.
-A power connection compliant with the laws and regulations in force.
The unit is an integral part of a balanced ventilation system. Pay attention to coupling between the unit and the natural draught boiler (for
ex. an open fireplace), which may cause a depression in the environment and the consequent reflux of exhaust gases.
For mounting the unit, you must:
- Realize, throughout the wall thickness, a hole with minimum diameter of:
.162 mm (VERSION AURA 2)
.102 mm (VERSION AURA 1)
with an inclination of 1 ° to the outside environment.
The Hole can 'be placed at any height.
It is suggested a minimum height of 1.8 m, a distance from the side walls and from the ceiling of 100 mm.
Ensure sufficient space for the maintenance.
In case of installation of two units on the same wall, remind to keep a minimum distance of 1.2 m between a hole and the other. In case
of two adjacent corner walls, remind to keep a minimum distance of 1.2 m from the angle shared by the two walls when performing the
hole.
INSTALLATION OF THE UNIT
POSITIONING AND ASSEMBLY OF THE UNIT
6
INDOOR OUTDOOR
EXTERNAL DUCT
INTERNAL DUCT
1,2 m
1,2 m
1,2 m
123456
B B
C C
D D
100 180 100
100 180 100
1
0
0
1
8
0
1
0
0
10
0
180100
Questa operazione deve essere svolta SOLO DA PERSONALE QUALIFICATO
This operation must be performed ONLY BY QUALIFIED STAFF
DPI: dispositivi di protezione individuale
PPE: Personal Protective Equipment
ATTENZIONE: prima di effettuare una qualsiasi procedura sull’unità assicurarsi che non vi sia tensione
CAUTION: Before performing any procedure on the unit make sure that there is no voltage

Cover the hole with cement-based mortar or polyurethane foam. Insert the telescopic duct inside the hole and flush the side of the
external duct (with greater diameter) with the external wall. Move the side of the one internal duct (with smaller diameter) and flush it with
the inside wall.
INDOOR
EXTERNAL DUCT
INTERNAL DUCT EXTERNAL DUCT
INTERNAL DUCT
OUTDOOR OUTDOOR
EXTERNAL DUCT
FLUSH WITH THE WALL
EXTERNAL DUCT
FLUSH WITH THE WALL
INTERNAL DUCT FLUSH WITH
THE ROOM WALL
INDOOR
Pull out the exchanger from the telescopic pipe through the proper handle.
HEAT EXCHANGER
INTERNAL DUCT
EXTERNAL DUCT
HANDLE
7
Wait until the mortar or polyurethane foam sets. Insert the inside-outside grille by pressing the springs on the pipe with greater diameter
towards the final part of the hole outwards. Release and check the grille is duly fastened.
-Insert the exchanger from the inside towards the final part of the duct with smaller diameter.
Unhook the cover from the motor holder by pressing on the side holes (1) with a small screwdriver
EXTERNAL PIPE
SPRINGS
EXCHANGER FLUSH
WITH THE INTERNAL PIPE
1
1

Break the area for wiring passage (2); in case of external wiring, break the areas (3) foreseen on the motor holder and cover.
8
3
2
3
3
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G:\I nventor\Ambiente I nventor \2013\T emplates \Utek.idw UT EK srl
Progetto
Codice Edizione Foglio
UNI T A' DI MIS U RA MIL LI ME T R I
dimensioni ingombro
07/09/2016
Il disegno è proprietà di UT E K s rl.
A termini di legge si vieta
tas s ativamente la riproduzione e la
divulgazione a terz i.
Fasten the motor holder just next to the exhaust hole by using screws and plugs
Questa operazione deve essere svolta SOLO DA PERSONALE QUALIFICATO
This operation must be performed ONLY BY QUALIFIED STAFF
DPI: dispositivi di protezione individuale
PPE: Personal Protective Equipment
ATTENZIONE: prima di effettuare una qualsiasi procedura sull’unità assicurarsi che non vi sia tensione
CAUTION: Before performing any procedure on the unit make sure that there is no voltage

GENERAL INFORMATION
-Disconnect the unit from the power supply before carrying out any electrical connections.
-Refer to the wiring diagram attached to this manual to carry out the necessary electrical connections.
-Make sure that all electrical components chosen for the installation (master switch, circuit breakers, cable cross-section and terminals) fit
the power of the installed unit and that they take into account the highest reachable load. The relative data are reported on the unit
identification plate.
-Do not run the cables inside the unit, unless otherwise specified in this handbook.
-Electrical cables and conductors must have an adequate cross-section compliant with the laws and regulations in force in the different
countries.
-Avoid running the cables in direct contact with the pipes or components present inside the unit.
AURA - CONNECTION OF THE POWER SUPPLY AND CONTROL UNIT
Connect the power supply to the mains grid on the AC IN side.
-Blue wire (N)
-Brown wire (L)
Connect the two wires of the 12Vdc power supply output side DC OUT from the power supply towards the control unit.
Respect polarities
-Red wire (+)
-Black wire (-)
The control unit can be positioned on box 503 or to the wall. It is equipped with a fastening screw underneath to access internal parts.
ELECTRICAL CONNECTIONS
9
+ -
12vdc
230/1/50
Questa operazione deve essere svolta SOLO DA PERSONALE QUALIFICATO
This operation must be performed ONLY BY QUALIFIED STAFF
DPI: dispositivi di protezione individuale
PPE: Personal Protective Equipment
ATTENZIONE: prima di effettuare una qualsiasi procedura sull’unità assicurarsi che non vi sia tensione
CAUTION: Before performing any procedure on the unit make sure that there is no voltage

UNIT WIRING DIAGRAM
Connect up to 4 motors to the control unit.
The connection is carried out through two dedicated outputs on which two motors are connected in parallel.
The first output:
3-4- Power supply of the first and second motor
5-6- Control signals of the first and second motor
7-8- Power supply of the third and fourth motor
9-10- Control signals of the third and fourth motor
In case of two motors, these can be connected either in parallel on the first output or differentiated on the first and second output. If
connected on the different outputs, the motors will rotate in alternate direction so as to enable the simultaneous inlet and extraction of air.
If connected in parallel, the motors will rotate in parallel so as to enable to double the instantaneous airflow of the various operation
cycles. It is also possible to connect the third motor on the preferred output, depending on the positioning of the unit.
+ -
12vdc
MOTOR A
MOTOR B
MOTOR C
MOTOR D
RED
BLACK
YELLOW
WHITE
RED
BLACK
YELLOW
WHITE
RED
BLACK
YELLOW
WHITE
RED
BLACK
YELLOW
WHITE
CONNECTIONS BY THE CUSTOMER
1 – 2 12VDC power supply from power Respect the polarities
3 – 4 – 5 – 6 Direct logic motors connecting in automatic operation Max two motors
7 – 8 – 9 – 10 Motors connection with inverse logic in automatic operation Contact tensioned (220v)
The unit provides direct power 230/1/50 ; on top of the unit there is an electronic card with two terminals for connection L and N.
CONNECTING POWER SUPPLY UNITS - ELECTRONIC VERSION
The control unit provides a wireless connection to the machine. No need to connect electric wires and cables.
The power supply of the unit ‘command is through two batteries of CR3032 type, supplied.
WIRELESS REMOTE CONTROL - ELECTRONIC VERSION
10

The unit is already connected with your remote controller, otherwise see page 21
UNIT SLAVE CONFIGURATION
NOTE - the slave configuration can be effected only after the complete configuration of master unit
1 Press the info button for at least 5 seconds. The central reporting LED will flash quickly, as shown in the beside figure, indicating the configuration.
2 go near with the remote control on the first slave to be configured. L'unità slave risponderà con una breve rotazione del ventilatore.
11
Max 5 cm.
ELECTRONIC VERSION - CONFIGURATION

3 When coupled the slave will light, flashing alternately, the led OUT, only extraction (led on the left), and the led IN, only input(central), alternating with the
LED IN/OUT of the automatic cycle (right).
Now it will be possible to select the operating mode of the unit compared to the master unit: input/extraction cicle.
-IIf you want that the unit recovery operation rotates in the opposite direction to the master, Press the out button (extraction) as in column A, up to which the
fan starts to rotate. The led at this point will flash alternately as indicate in column A. If you want that the slave units rotate parallel to the master, press the IN
button (input) as in column B, up to which the fan starts to rotate.
he led at this point will flash alternately as indicate in column B.
4 Confirm your choice by long pressing the button IN/OUT cicle and wait for the temporary cessation of the fan that later will resume operation.
5 Put the remote control near the second slave and repeat the configuration. The same system in succession for all slaves
12
Max 5 cm.
A B
Max 5 cm. Max 5 cm.
Max 5 cm.
Max 5 cm.

6 Exit the slave configuration procedure by pressing the ON / OFF button. The info's LED will not flash more quickly, thus signaling the exit from the slave configu-
ration mode.
1 Keep pressed the ON / OFF button and wait for the central LED will start to flash rapidly. lhe central signaling LED will flash fast as shown in the picture below,
indicating the configuration state
2 After a few seconds, the remote control will show a sequence of LEDs as shown in the central figure. The LEDs indicate the decoupling mode enabled.
3 Keep pressed the AUTO button to uncouple all the slaves by the system.
PROCEDURE RESET/DECOUPLING OF SLAVE
1 Keep pressed the ON/OFF button and wait for the central LED will start to flash rapidly. The central signaling LED will flash fast as shown in the picture below,
indicating the configuration state
2 After a few seconds, the remote control will show a sequence of LEDs as shown in the central figure. The LEDs indicate the decoupling mode enabled..
3 Keep pressed the SLEEP button to uncouple all the slaves by the system.
PROCEDURE RESET/DECOUPLING OF THE MASTER FROM THE REMOTE CONTROL
13
1
12
2 3
3

The ventilation speed selector enables you to choose among maximum speed, minimum speed and system shutdown. The speed variation enables you to
change the airflow exchanged with the outside, no matter the operation mode. The airflows are 25 and 50mc/h.
The dx commutator button foresees three operation modes:
-Auto: the unit alternates air inlet and extraction.
-In: air inlet only.
-Out: air extraction only.
GENERAL INFORMATION
To make sure that moisture present inside the house is properly drained, the unit should constantly operate at least at low speed (speed 1). If you turn off the
ventilation unit, condensate may develop inside the unit and inside the building with possible damage due to moisture.
AURA - OPERATION OF THE CONTROL UNIT
The control unit is made a couple of 3 positions switches. It is equipped with screws specific for the 503 built-in box; anyway, it is possible to fasten it on any kind
of flat wall by using adequate fasteners.
START-UP AND USE
14
Connect the power supply 230/1/50 to each installed unit. Communication between devices is through wirless communications.
There will be 'a master device with included remote and more slave unit (up to 16) that will work commanded by the generated network from the master.
ELECTRICAL DIAGRAM UNIT - ELECTRONIC VERSION
CONNECTIONS BY THE CUSTOMER
L - N Mains power supply 230/1/50
230V
50Hz
do the hole
230V
50Hz
230V
50Hz
230V
50Hz
do the hole
do the hole do the hole

The adjusting knob enables you to adjust the duration of the air inlet/extraction cycle from a minimum of 30 seconds to a maximum of 200 seconds, depending
on the difference in temperature between inside and outside. If the difference in temperature between inside and outside is high, the cycle duration should
be as short as possible to guarantee the highest thermal performance. If, instead, the difference in temperature is close to zero, the cycle should last as much
as possible. For example, if the temperature outside is –5°C and the difference in temperature between inside and outside is high, turn the knob on the thickest
DT line. Conversely, if the difference in temperature is small or close to zero, turn the knob on the thinnest DT line; below are four reference values:
POSITION 1 2 3 4
CYCLE DURATION 35s 70s 130s 220s
DELTA 20° 10° 5° 0°/2°
.
1 2 3 4
15
The control unit, is constituted by two buttons that contain all the functions of the product inside them. The central LED, between the on-off button and the
info button allows you to view the sending the command to the fan unit.
The on / off button allows the activation or deactiva-
tion the
The info button It allows you to view the status of the
unit. A press of the Info button the unit's operating
mode is displayed, the speed of the fan and if you
have set the sensor functions and night operation.
the buttons on second line allow you to select the
operating mode:
- Auto: units alternates the extraction and immission
flow
- Out: only extraction flow
- In: only immission flow
- In / out :allow to do the recovery cycles,automatical
ly adjusted as a function of detected temperatures
The buttons on the third line allow you to choose the
speed of operation of the fan, from left to the right :
- First speed
- Second speed
- Third speed
The down button on the left is the Sensor. enables the
speed of automatic operation; The unit, through the
light sensor and the humidity sensor inside the electro-
nic card, will select the appropriate fan speed for
correct operation.
The button on the right down , strength the unit in night
mode; the night speed allows the operation of the
unit with a minimum speed for make the unit quieter
and more adequate to nighttime use.
OPERATING UNIT CONTROL - ELECTRONIC VERSION

16
UNLOCK / REACTIVATION REMOTE CONTROL
READY
Activation Power Off
1 After three minutes of inactivity, the remote control, to save energy enters in Sleep mode.
2 Press the info button for at least 2 seconds to activate and unlock the remote control.
3 The remote control is ready to commands.
ON OFF UNIT / SELECTION PROCEDURES AND SPEED
1 To activate the unit, first select the desired mode between extraction, input and cycle
2 Selection now the fan speed between min – average – max
EXAMPLE :
the picture beside showing the choise of the selection the automatic cicle mode and average speed. As it regards the only function extraction or only input
the unit after 30 minuts return automatically in cycle mode.
- To turn off the system, press the ON-OFF button.
REQUEST STATE SYSTEM
1 With active remote control is possible examine the system for understand the state and the active functions. Press the info button and wait that the remote
control lights the LEDs relative to the states. The remote control will show after a few seconds:
- Mode 'set
- Speed set
- Functions Sensors and night if active
EXAMPLE :
In the beside picture the remote control responded automatic cycle and maximum speed.

17
AUTOMATIC OPERATION
1 Press the Auto button, the unit enter in automatic mode. In this mode, the Master fan unit It detects the environmental parameters (temperature, umidity
and brightness) and making procedures and elaborations, mentioned below, to ensure the best environmental comfort. Every single slave adjusts the fan
depending of its light and humidity sensors.
EXTRA CYCLE OPERATION AND RECOVERY REGENERATIVE MODULAT
The master, in AUTO mode, It has the purpose of controlling the time of input and extraction for optimize the regenerative recovery cycle of the system. To the
first activation of the "Auto" mode, after 10 minuts and later every 12 hours, the fan unit "Master" performs the procedure "Extra-cycle" to detect the difference
in temperature between the internal and external environments, in order to determine the duration of the "Auto Cycle" most suitable, which it will also be
adopted by eventual "Slave" ventilation units in the system. The procedure "Extra-cycle" lasts 5 minutes, during which the communication with the remote
control is inhibited; in this phase, every eventual command given with the remote control will have as feedback three flashes of the LEDs. The duration of the
recovery cycle is automatically determined by the outcome of "Extra-loop" process and can vary between 30 and 200 seconds, which shall be distributed
equally between the extraction phase and that of input.
DEHUMIDIFICATION
A humidity sensor allows to every ventilation unit of detect the environmental humidity, and in case of necessity, autonomously activate high-speed air
extraction cycles to reduce humidity and improve the environmental comfort. Depending on ambient humidity conditions, the procedure can have a
duration between 2 and 12 minutes (during which time the communication with the remote control is inhibited) and can recur every hour. The drying cycle is
suspended in "night mode."
Note: this functionality is disabled by default; to enable it, see paragraph “paragraph settings”.
BRIGHTNESS SENSOR
A light sensor allows, for each individual ventilation units, autonomously to adopt the minimum speed (extra-low) during the night. If it is necessary the sensors
di luminosità the light sensors can be excluded, in this case the night speed can only be activated manually by means of the remote control button.
Note: this functionality is disabled by default; to enable it, see paragraph “paragraph settings”.

18
ISETTING OF PARAMETERS (THRESHOLD HUMIDITY 'ACTIVATION AND LIGHT OPERATION)
1 Keep pressed the AUTO button until the central LED does not blink fast. The central signaling LED will flash 'quickl which indicates the entering to the configu-
ration parameters
Now it will be possible to set:
-the humidity level for dehumidification function
-activation or deactivation of the light function
2 The remote control will show fixed LEDs to indicate, through the three-speed fan, indicates the setting of humidity threshold between:
Low - Medium and High
3 Choose if activate or deactivate the function of the light sensor.
Led Night On = Function active
Led Night Off = Function deactivates
Keep pressed the AUTO button until the central LED does not blink fast to exit the configuration parameters if there are no selections.

19
STARTING UNIT CONTROL - ELECTRONIC VERSION
The control unit for the electronic version is supplied with CR3032 batteries

GENERAL CLEANING OF THE UNIT
Occasionally, it is advisable to proceed to the verification and eventual fan cleaning of the heat exchanger and the interior walls of the unit. These operations
must be carried out only by qualified personnel (installer). To perform these operations, proceed as follows:
- disconnect the power supply unit
- open the cover by unlocking the retaining hooks;
- disassembling the motor support through the screws used for fixing.
- remove the exchanger towards the inside carefully.
- proceed to clean the unit 'very delicately using a vacuum cleaner or a compressor;
- check the status of cleaning, also, the external grid
- insert it back into place the heat exchanger;
- reinstall the motor support through the screws and fix the cover
OPERATION AND INFORMATION ON WIRELESS COMMUNICATION
The remote control interacts exclusively with the ventilation unit MASTER, which in turn sends the commands to the slave unit. The slave units that are out of
range of the unit's radio coverage MASTER, receive commands from the nearest slave unit; in the example that follows, the unit Slave N.3, receives commands
from Slave N.2.
HANDLE
To guarantee always the correct operation of the unit, is necessary to periodically perform all the maintenance operations.
CLEANING OR CHANGING FILTERS
- disconnect the power supply fan unit
- unhook the cover from the motor support by pressing on the side holes (1) with a small screwdriver (as shown below)
- unscrew the four screws on the cover
- remove the filter and clean it with a vacuum cleaner or blow it with compressed air. It is possible to immerse the filter in water and wash it periodically.
- allow to dry completely before reinstalling the filter inside the unit.
MAINTENANCE
20
1
1