LU-VE ALFA Optigo SFMD User manual

ORIGINAL INSTRUCTIONS
31515694EN-02
Optigo SFMD
Instruction manual
• Product description
• Product labels
• Unpacking & lifting
• Installation
• Maintenance
• Spare parts

31515694EN-02
2
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
Index
1. Important information ............................................................................................................ 3
1.1 Disclaimer ................................................................................................................................. 3
1.2 Intended use ............................................................................................................................. 3
1.3 Where to nd product information ............................................................................................ 3
1.4 Warning symbols ...................................................................................................................... 3
1.5 Health, safety and hygiene ....................................................................................................... 4
1.6 Use of ammable gas ............................................................................................................... 4
1.7 Checks at delivery .................................................................................................................... 5
1.8 Return of unused heat exchangers .......................................................................................... 5
1.9 Guarantee ................................................................................................................................ 5
1.10 Disposal .................................................................................................................................... 5
2. Product description ............................................................................................................... 6
2.1 General information and application ......................................................................................... 6
2.2 Standard conguration ............................................................................................................. 6
2.3 Options ..................................................................................................................................... 6
2.4 Code description ...................................................................................................................... 7
3. Product labels ......................................................................................................................... 7
4. Transport and storage ........................................................................................................... 9
5. Unpacking and lifting ........................................................................................................... 10
6. Installation ............................................................................................................................ 12
6.1 Mounting dimensions ............................................................................................................. 12
6.2 Mounting bracket .................................................................................................................... 13
6.3 Technical spaces .................................................................................................................... 13
6.4 Refrigerant connections ......................................................................................................... 13
6.5 Cooler capacity test ................................................................................................................ 14
6.6 Drain line ................................................................................................................................ 14
6.7 Electrical connections ............................................................................................................. 15
6.8 Fan motors connections ......................................................................................................... 16
6.9 Fan motors connections ......................................................................................................... 16
6.10 Defrost .................................................................................................................................... 17
6.11 Electric defrost connections ................................................................................................... 18
7. Maintenance .......................................................................................................................... 19
7.1 Shut down periods .................................................................................................................. 19
7.2 Moisture in the refrigeration system ....................................................................................... 19
7.3 Cleaning and disinfecting ....................................................................................................... 19
7.4 Casing .................................................................................................................................... 19
7.5 Coil and drip tray .................................................................................................................... 19
7.6 Electric defrost elements replacement ................................................................................... 20
7.7 Fans ....................................................................................................................................... 21
7.8 Fan replacement .................................................................................................................... 21
8. Residual risks ....................................................................................................................... 22
9. Troubleshooting ................................................................................................................... 22
10. Spare parts ............................................................................................................................ 23

31515694EN-02
3
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
1 Important information
1.1 Disclaimer
This Instruction Manual applies to all Optigo SFMD air cooler products. Manual must be carefully
examined and instructions should be followed up at all times.
Alfa LU-VE does not accept liability for any damage resulting from non-compliance to the instruc-
tions as given in the manuals and order-related documents.
1.2 Intended use
Air coolers are partly completed machinery according to Machine Directive 2006/42/EC and are
intended for incorporation in cooling systems. Declarations of Incorporation are available on
alfa.luvegroup.com. The product is built according to the following standards:
• PED 2014/68/EU
• Safety of Machinery EN 60204-1
• Directive 2014/30/EC and subsequent modifications. Electromagnetic compatibility.
• Low Voltage - Reference Directive 2014/35/EC
However it is forbidden to operate our equipment before the machine incorporating the products or
making part thereof has been declared to be in conformity with the EC Machine Directive.
1.3 Where to find product information
Detailed technical data for individual product models are available in order related documents,
on the product label and in product data sheets. Comprehensive technical information for all Alfa
LU-VE air heat exchanger products is available on-line on alfa.luvegroup.com. This includes:
• Product manuals
• Instruction manuals
• Product leaflets & brochures
• Product data sheets (selection software)
• Dimensional drawings
• Certificates
Alfa LU-VE offers world-wide service and support. In case of any questions
or uncertainty please contact your local Alfa LU-VE representative.
Contact addresses are available at alfa.luvegroup.com.
1.4 Warning symbols
The following warning symbols are used in Alfa LU-VE instruction manuals.
General warning.
Risk of malfunctioning and/or
damage.
Hot surfaces. Danger of burns.
Wear adequate protection.
Moving parts. Danger of injuries.
Do not operate without protection guard mounted.
Sharp surface. Danger of cutting injuries. Wear
adequate protection.
Overhead load.
Never stand or walk below the load.
Mandatory prescription.
Follow instructions as provided.
Forklift trucks or other logistic vehicles.
Stay clear of working space.
Risk of injuries.
Wear head protection.
alfa.luvegroup.com/sfmd

31515694EN-02
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Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
Electrically powered component. Switch off power
supply before any maintenance or installation
activity.
Risk of injuries.
Wear safety footwear.
Cold parts. Danger of frostbite injuries.
Wear adequate protection.
Risk of injuries.
Wear protective gloves.
A2L flammable gas.
1.5 Health, safety and hygiene
Ensure that the following guidelines are observed:
• All work on the equipment must be carried out by trained personnel.
• The electrical supply is suitable for the equipment supplied.
• Refrigerant, temperature and pressure must agree with the data on the product label of the
relevant heat exchanger.
• As the heat exchanger is supplied indirectly, the producer is not acquainted with its actual appli-
cation.
• The heat exchanger should be installed in conformance with the recognized national standards
of electrical and refrigeration installation practice.
• The supplied heat exchanger is optimized for the refrigerants as stated in the data sheet or
order documents. The allowed maximum pressure is noted on the type plate. During production
the heat exchanger was subjected to a strength test exceeding the design pressure. However,
during normal use the design pressure may not be exceeded.
• Heat exchangers supplied by Alfa LU-VE are normally not equipped with a high-pressure cut
out. The installer is responsible for fitting a high-pressure cut out on the system in which the
heat exchanger is used.
• The heat exchanger shall not be blocked in. If the ambient temperature rises, the pressure could
rise and exceed the design pressure.
• It is not permitted to use the heat exchanger for any purpose other than the one it was designed
for by Alfa LU-VE.
• If the equipment is used in the food industry, responsibility with regard to hygienic conditions lies
with the end user.
1.6 Use of flammable gas
• The product must be stored and installed in rooms where the use of open flames or other
ignition sources is forbidden
• During transport, handling, installation, the product and, in particular, the pipes must be
protected to avoid physical damage which may cause it breakage.
• In the event of suspicious damages or doubts about the correct handling (eg. damaged
packaging) do not install the product before carrying out a thorough integrity check.
• Install the product only and exclusively in places that comply with the minimum size and/or air
exchange requirements established by the applicable standards, in relation to the total charge of
flammable fluid provided for in the installation in which it is incorporated.
• All ordinary and extraordinary maintenance operations must be performed only by qualified
personnel in the use of equipment with flammable fluid. special attention to operations that
require interventions on the pipes.
• The use of refrigerants different than those indicated in the data plate or in this manual is
forbidden.
In general, the use of refrigerants that are not included in the list of the IEC 60335-2-40 Annex b
standard is forbidden.
• Before performing any maintenance operation, exclusively by qualified staff, perform a check for
the absence of gas in the room and around the product through an appropriate detector.
• Before performing any operation for opening the pipes of the refrigerant circuit, by means of
mechanical operations or with open flames, make sure that the circuit does not have any

31515694EN-02
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Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
quantity, even minimal, of inflammable gas and that it has been washed internally with inert
gas (ex. nitrogen). all operations must be performed by personnel qualified in the use of
flammable gases.
• The product shall not be modified in any part of it, by removing or adding component.s
• The product is not an Atex product. The connection of any system component that is not already
assembled in the factory, must take place outside the product, at an appropriate distance and
check that its installation complies with all the regulatory requirements applicable to flammable
gas systems.
• The product is not an Atex product. It is the responsibility of the installer to verify the compliance
of the product and its incorporation in the system to european and national standards.
• In the case of components that must necessarily be installed inside the product, the compliance
of the final assembly is the responsibility of the installer. in particular:
- the use of any component, electrical or mechanical, which may be the origin of sparks or
flames, is forbidden. Only the exclusive use of components suitable for use in explosive
atmosphere (Atex) is allowed.
- the use of components that may be cause of flammable gas leaks is forbidden.
The installation of components of the refrigerant circuit is allowed only with permanent brazed
connection.
1.7 Checks at delivery
At the moment of delivery, carefully check the units.
All finned coils are pressure tested with dry air, sealed and supplied with a slight overpressure. Prior
to installation, the leak resistance must be checked with the Schrader valve.
Any present damage must be reported on the delivery note with a description of the damage.
Damaged heat exchangers, including when the damage is not externally visible, are to be reported
to the shipping agent and Alfa LU-VE within 24 hours.
1.8 Return of unused heat exchangers
Air heat exchangers that have been delivered in accordance with orders are in principle not return-
able. Heat exchangers can only be returned under certain conditions and following consultation with
Alfa LU-VE. This applies exclusively to unused units. The heat exchangers that are to be returned
should be delivered carriage paid to Alfa LU-VE in the original, undamaged and unwritten factory
packaging. Not returnable are:
• Heat exchangers older than three months from the invoice date.
• Heat exchangers that have already been built in and/or are damaged.
1.9 Guarantee
For our guarantee conditions, we refer to the Terms of Delivery. In general, the warranty period
between Alfa LU-VE and the customer is 24 months from factory invoice date or 12 months of
operation, which ever comes first. Heat exchangers must not be returned or disposed of, other
than in accordance with instructions from Alfa LU-VE. Contact your local Alfa LU-VE representative
before any remedial action is taken on the units, otherwise warranty may be void.
1.10 Disposal
After decommissioning the heat exchanger coil should be emptied from refrigerant fluids. Avoid
any emissions in the environment. Any refrigerants and oil residuals must be properly disposed of
according to applicable environmental regulations. The fully emptied heat exchanger unit, including
all electrical components, should be handed in to the proper authorized companies for recycling.

31515694EN-02
6
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
2 Product description
2.1 General information and application
Optigo SFMD are commercial dual discharge air coolers suitable for the safe use of ASHRAE A2L
refrigerants. A2L refrigerants have a minimal impact on global warming and they will bring maxi-
mum energy efficiency. So today, they are the best technological solution for air conditioning and
refrigeration applications, outside the natural refrigerants. General application for Optigo SFMD are
in small to medium-sized cooling rooms.
• Refrigerants:
- Air defrost: certified for the use of any A2L refrigerants
- Electrical defrost: certified for the use of the only A2L refrigerants listed on the IEC standard
60335-2-40 (R-32, R-1234YF, R-1234ZE (E), R-444A, R-444B, R-447B, R-451A,
R-451B, R-452B, R-454A, R-454B, R-454C, R-455A)
• Design pressure: 24 bar
• Capacity (SC2 with R404): 1.47 up to 14.57 kW
• Air inlet temperature: -25 to +30 °C
• Fluid inlet temperature: -40 to +20 °C
2.2 Standard configuration
• Innovative coil manufactured from internally grooved Cu tubes and aluminium fins.
• Optigo SFMD coolers are available with 1 to 4 fans. All models are standard fitted with EC fan
motors. Integrated thermo contacts.
• Durable aluminium alloy metallic casing, epoxy coated RAL 9003. Hinged drip tray.
Dismountable and openable casing for cleaning purposes.
• Vertical plastic drain connection.
• Fan motors wired to connection box.
• Fitted with Schrader valve on the suction connection for testing purposes. Each heat exchanger
is leak tested with dry air and finally supplied with a dry air pre-charge.
• Delivered on a wooden pallet, either covered with a reinforced cardboard box or a wooden crate.
2.3 Options
• Coil protection: Alupaint (AP)
• Driptray insulation (IS)
• Driptray heater (HD)

31515694EN-02
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Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
2.4 Code description
SFMD - 2 2 1 3 - N - BP - AL CU - *
1 2 3 4 5 6 7 8 9 10
1 Optigo SFMD A2L safety compliant dual discharge commercial air cooler
2 Casing type (1 to 4)
3 Number of fans (1 to 4)
4 Coil type (1, 2)
5 Fin spacing (3=3.0, 4=4.5, 7=7.0 mm)
6 Defrost system (N=air defrost, E=electric defrost)
7 Packing (BP=box + pallet, CR=crate)
8 Fin material (AL=aluminium, AP=pre-painted aluminium)
9 Tube material (CU=copper)
10 Options
3 Product labels
①
④
③
⑤
⑥
1. Flammable gas
Use of flammable gas.
②
⑦

31515694EN-02
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Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
Manufactured by
SEST-LUVE-POLSKA sp. z. o. o.
ul. Wyczólkowskiego 30,
44-109 Gliwice, Poland
HEAT EXCHANGER
SFMDE-221 3-N-BP-
AL4CU
CODE: 10220733
S/N: 6449383/2020
PED CAT I
Fluid: A2L-A1 GROUP
VOLUME: 1.10
dm3
Ts:
-40 °C +55 °C
Max Pres: 2.4 MPa
VENTILATION
Nr. Motors: 2
PowerS: 230 V 50 Hz
85 W 0.73 A
N°
N°
MADE IN
POLAND
DEFROSTING
EXAMPLE
EXAMPLE
2. Product label
This label is positioned inside the casing.
Model Refer to paragraph "2.4
Code description"
Product code
Product Serial nr.
Communicate these when
ordering spare parts as
they identify the unit
PED Category According to PED
Fluid Refrigerant*
Volume Coil Volume
Ts Range of operating tem-
peratures for the coil
Max Pres Max working pressure
No. Motors Number of fans
*Air defrost: A2L, A1 refrigerant group
Electric defrost: R-32, R-1234YF, R-1234ZE (E), R-444A, R-444B, R-447B,
R-451A, R-451B, R-452B, R-454A, R-454B, R-454C, R-455A, A1
Product code
Product serial nr.
Fluid
Volume
Ts
Max Pres
No. Motors
PED category
Model
3. Precharge warning
Only for SFMDE and SFMDX units.
Units are delivered from the manufacturer
with an overpressure. Check pressure on the
Schrader valve. With unpressurised unit:
immediate report to manufacturer and note on
bill of delivery.
When installing the unit ensure the Schrader
valve is removed.
4. Electrical warning
Electrically powered component. Switch off
power supply before any maintenance or instal-
lation activity.

31515694EN-02
9
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
5. Close carefully
When opening/closing the drip tray, pay atten-
tion in order to avoid interference between
impellers and fan collars.
-
A.Rottigni
31188585
LU-VE S.p.A.
21040 Uboldo (VA) ITALIA - Via Caduti Della Liberazione, 53
Tel: [phone] - Fax: [phone]
www.luve.it - e-mail: [e-mail]
CUSTOMER
ISSUE
CHANGE REASON
CHANGE DATEDRAWN BYSTATUS
MATERIAL CODEPROJECTIONGENERAL TOL.
DESCRIPTION
WEIGHT
KG
U.M. MATERIAL
DRAW DATE CREATED BY APPROVAL DATE APPROVED BY
IT14 - ±1°
03/07/2020 A.Rottigni
00
-
A.Rottigni 03/07/2020Controlled
This drawing is the property of LU-VE Group, any reproduction and/or distribution without LU-VE Group approval is unlawful.
STICKER_FMD_FAN SHROUD
0
Thick. 1,2 mm
03/07/2020
PVC,Nonplastificato
mm
30
210
DIMENSIONI: 210 x 30 mm
SCRITTE: colori (--)
FONDO: trasparente (--)
MATERIALE: PVC autodesivo
(tipo mactact)
cod.8129_90 micron
DIMENSIONS: 210 x 30 mm
WRITTEN: colors (--)
BACKGROUND: transparent (--)
MATERIAL: PVC self-adhesive
(type mactact)
code 8129_90 micron
4 Transport and storage
During transportation the heat exchanger must be handled with all required care. Any instruction or
warning signs attached to the heat exchanger or the packaging must be followed. Avoid shocks or
continuous vibrations during transport. These may cause damage to the product. If required, con-
sult Alfa LU-VE and disassemble during transport any parts that are likely to be set into vibration.
Air heat exchangers must be adequately fixed on the transport vehicle. If temporary storage of the
heat exchanger is required, the following points should be observed:
• Store the heat exchanger in its packing, in a dry place with sufficient protection against sun and
other environmental influences.
• Always place air heat exchangers on an even surface.
• Do not stack air heat exchangers unless explicitly indicated this is allowed.
• Storage temperature between -40° C and +50 °C.
• Never open or remove the Schrader valves before unit installation. Overpressure in the coil must
be maintained.
Shelf life of air coolers is one year. If longer storage periods occur, check:
• Proper functioning of the fan motor.
• Mounting brackets, lifting lugs and fan fixings for corrosion.
6. Refer to instruction manual
Manual must be carefully examined and instruc-
tions should be followed up at all times.
7. Eurovent
The Optigo SFMD series machines use the
same heat exchange components as the corre-
sponding Optigo FMD series models and pro-
vide the same performance. The Optigo SFMD
series machines can work with HFC category A1
refrigerants.

31515694EN-02
10
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
Optigo SFMD air coolers are delivered on a wooden pallet, either covered with a reinforced card-
board box or a wooden crate. Handling and positioning can take place manually (smaller models) or
with use of a forklift.
5 Unpacking and lifting
In order to avoid damage to the air cooler or fall-
ing of the unit, ensure that the lifting forks cover
all beams from the lower support pallet.
Casing type 1 and 2 models packed with card-
board box must be turned. Place the unit on
the ground and manually turn the air cooler into
mounting position on a second wooden pallet.
Keep the packaging material in place to prevent
the drip trays from damaging.
Packed air coolers may be stacked during trans-
portation (max. 2) and storage (max. 3). Respect
the maximum number of stacked air cooler units.
Remove the original support pallet (now on top)
and flatten the cardboard sides. The cooler is
now in mounting position.
max. 3 max. 2
>50 mm