Alfa Network Optigo FMD User manual

ORIGINAL INSTRUCTIONS
31114051EN-06
Optigo FMD
Instruction manual
• Product description
• Product labels
• Unpacking & lifting
• Installation
• Maintenance
• Spare parts

31114051EN-06
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.
Index
1. Important information
1.1 Disclaimer...................................................................................................................................4
1.2 Intended use...............................................................................................................................4
1.3 Where to nd product information ..............................................................................................4
2. Product description
2.1 General information and application...........................................................................................5
2.2 Standard conguration ...............................................................................................................5
2.3 Options.......................................................................................................................................5
2.4 Code description ........................................................................................................................6
3. Product labels...........................................................................................................................7
4. Unpacking and lifting...............................................................................................................9
5. Installation
5.1 Mounting dimensions ...............................................................................................................11
5.2 Mounting bracket......................................................................................................................12
5.3 Refrigerant connections ...........................................................................................................12
5.4 Pressure test ............................................................................................................................13
5.5 Drain line ..................................................................................................................................13
5.6 Electrical connections...............................................................................................................14
5.7 Fan motors connections...........................................................................................................14
5.8 Electric defrost connections .....................................................................................................15
6. Maintenance
6.1 Driptray heater elements replacement .....................................................................................16
6.2 Fans replacement.....................................................................................................................16
7. Spare parts..............................................................................................................................17

31114051EN-06
4
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 FMD 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.
alfa.luvegroup.com/fmd

31114051EN-06
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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 Product description
2.1 General information and application
Optigo FMD are commercial dual discharge air coolers for general application in small to medium-
sized cooling, freezing and working rooms. Low air velocity and noise level make them especially
suitable for refrigerated working and processing rooms.
•Refrigerants: HFC* (FMDE), CO2(FMDX) and brine (FMDW)
•Air inlet temperature: -25 to +30 °C
•Fluid inlet temperature: -40 to +20 °C
Model Refrigerant Max working pressure
FMDE HFC* 24 bar
FMDX CO260 bar**
FMDW Brine 12bar
* Fluid group 2 according to EN 378
** 85 bar in special execution
2.2 Standard configuration
•Innovative coil manufactured from internally grooved Cu tubes and aluminium fins.
•Optigo FMD 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 driptray. Dismountable
and openable casing for cleaning purposes.
•Vertical plastic drain connection.
•Fan motors wired to connection box.
•Fitted with schräder valve on the suction connection for testing purposes (only for FMDE and
FMDX units).
•Delivered on a wooden pallet, either covered with a reinforced cardboard box or a wooden crate.
2.3 Options
•Electric defrost (E)
For cold rooms with room temperatures below 4 °C frost build-up is likely, the application of a
defrosting system is recommended. The stainless steel defrost elements are connected to
dedicated terminal box.
•Coil protection: pre-coated aluminium fins (AP)
•Horizontal metalic drain connection
•Stainless steel tubes (AISI 304)
•Re-heating coil (RH) - on request
•Water drain pump - on request

31114051EN-06
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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
FMD E - 2 2 1 3 * - N - BP - AL CU - * *
1 2 3 4 5 6 7 8 9 10 11 12 13
1 Optigo FMD dual discharge commercial air cooler
2 Refrigerant system (E=HFC, X=CO2, W=brine)
3 Casing type (1 to 4)
4 Number of fans (1 to 4)
5 Coil type (1, 2)
6 Fin spacing (3=3.0, 4=4.5, 7=7.0 mm)
7 Circuits code - only for brine units
8 Defrost system (N=air defrost, E=electric defrost)
9 Packing (BP=box + pallet, CR=crate)
10 Fin material (AL=aluminium, AP=pre-painted aluminium)
11 Tube material (CU=copper)
12 Applications - only for CO2units (blank=DX 60 bar design pressure, P=pumped 60 bar,
85=DX 85 bar design pressure)
13 Options

31114051EN-06
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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.
Manufacturer:
MODEL
COIL
VENTILATION
DEFROSTING
CODE:
S/N:
Fluid:R404A
VOLUME:1.83 dm
3
Ts:-40°C, +55 °C
MaxPres: 2.4 MPa
Nr.Motors2
Tens.230V 50 Hz
85W0.6 A
Nr.1
230V 900W
MADEIN POLAND
3 Product labels
Manufacturer:
MODEL
COIL
VENTILATION
DEFROSTING
CODE:
S/N:
Fluid: R404A
VOLUME: 1.83 dm
3
Ts: -40 °C, +55 °C
Max Pres: 2.4 MPa
Nr. Motors 2
Tens. 230 V 50 Hz
85 W 0.6 A
Nr. 1
230 V 900W
MADE IN POLAND
EXAMPLE
EXAMPLE
1. Product label
This label is positioned inside the casing.
Model Refer to paragraph "2.4
Code description"
S/N Communicate these when
ordering spare parts as
they identify the unit.
Fluid Refrigerant
Volume Coil Volume
Ts Range of operating tem-
peratures for the coil
Max Pres Max working pressure
Nr Motors Number of fans
①
③
②
④
⑤

31114051EN-06
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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. Precharge warning
Only for FMDE and FMDX 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.
3. Electrical warning
Electrically powered component. Switch off
power supply before any maintenance or instal-
lation activity.
4. Close carefully
When opening/closing the driptray, pay atten-
tion in order to avoid interference between
impellers and fan collars.
5. Eurovent
All FMDE models are EUROVENT certified.
Certified data:
• Capacities (ENV 327)
• Air quantities
• Motor power consumption
• External surfaces
-
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

31114051EN-06
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.
Optigo FMD 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.
1
1
2
2
1
1
2
2
4 Unpacking and lifting
>50 mm
max. 3 max. 2
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.
3

31114051EN-06
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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.
BB
B
B
A
A
Remove side covers (A) by loosening screws
(B).
Remove the transparent protection film from
painted metallic parts, if present.
Lift the unit to mounting position and secure
following instructions given in chapter "5
Installation". After having secured the cooler, the
forks may be lowered and the remaining packag-
ing materials can be removed.
Casing type 3 and 4 models packed with crate
are supplied in mounting position. Prior to lift-
ing and mounting, the top crate panel must be
removed.

31114051EN-06
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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.
5 Installation
5.1 Mounting dimensions
Detailed drawings showing all required mounting and refrigerant connection
dimensions are available available for download on alfa.luvegroup.com.
Dimensional drawings
Casing type
Dimensions (mm)
A B C X Y
1 892 269 307 596 -
2 1447 281 319 1151 -
3 2002 293 331 1706 853
4 2557 293 331 2261 1130
X
Y
890
850
252
C
A
10
B
15
3/4” GAS

31114051EN-06
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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.
5.2 Mounting bracket
Use suitable studs when mounting the unit to the
ceiling.
Fix the unit to cold room ceiling by securely
tightening nuts and washers.
5.3 Refrigerant connections
Do not adapt headers position to the suction line.
Ø 8 mm
Ensure the supply circuit is closed (no pressure)
before connecting the suction lines.
Remove the fixing material (1) and open (2) the
driptray (F). Connect the suction line (H), the
thermostatic valve (I) to distributor (L) and the
liquid line (M).
Ensure the flame nozzle is not aimed at the
equipment, when welding. Insert a protection
shield if required.

31114051EN-06
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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.
5.4 Pressure test
Ts1=cold room air inlet temperature.
Te=evaporating temperature. It is related to the
refrigerant pressure on the unit cooler outlet.
Trs=refrigerant superheat temperature, on suc-
tion line near thermostatic valve bulb.
(Trs-Te)=superheat
(Trs-Te) ≤ 0.7 x (Ts1-Te)
Keep the superheat as low as possible to obtain
maximum unit cooler performance.
The thermostatic valve fitted must be correctly
sized for the installation conditions and adjusted
for correct system operation.
Close the driptray and connect the drain tubing
(O) to the drain connection (N).
5.5 Drain line
Tighten drain connection by hand only.
The drain line diameter must be at least the size
of the driptray drain diameter and should be laid
with an adequate slope. For room temperatures
below 0 °C drain line insulation and defrosting
are required.
A syphon must be installed on the drain line, out-
side the cold room.

31114051EN-06
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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.
5.6 Electrical connections
The following data determine which connection diagram is to be selected and respected for electri-
cal installation:
• Heat exchanger model indication
• Fan motor type
• Electrical options
When in doubt always contact your local supplier or Alfa LU-VE representative for assistance.
Remove the terminal block cover (P).
Insert the cables into the grommet (U) and
block them with their respective gland. Connect
terminals by following the wiring diagrams on the
cover. When all connections are made refit the
terminal block cover.
For systems using electrical/hot gas defrost, a
defrost termination thermostat should be used,
having a range of 10 °C to 20 °C with a sensor
attached to the top return bends of the coil block
or buried in the top of the coil block fins (Q).
Differential protections and circuit breakers are not included in the scope of supply.
5.7 Fan motors connections
Ensure complete electrical isolation before performing any wiring.
Motor power consumption (x1)
Speed H = High Speed (1100 RPM) L = Low Speed (900 RPM)
1~230 V - 50 Hz 85 W 0.7 A 42 W 0.4 A
Standard: 2 speed
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$
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 
Optional: 0-10 V

31114051EN-06
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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.
FMD FMDEB1
OPTIONAL
FMD = standard
EB1 = OPTIONAL (200 W)
FMD FMD EB1
5.8 Electric defrost connections
FMD FMD EB1
FMD
FMD
EB1
Casing type
Electric heaters
no. W (x1) W tot
1 2 900 1800
2 2 1600 3200
3 2 2350 4700
4 2 3100 6200

31114051EN-06
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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.
6 Maintenance
Ensure complete electrical isolation before performing any maintenance activity.
When opening/closing the driptray, pay attention in order to avoid interference between impellers
and fan collars.
6.1 Driptray heater elements replacement
Always disconnect power supply before handling
heater elements.
Disconnect drain line. Remove fixing bolts and
open the driptray (F) and the bottom plate (G).
FMD
Open side covers. Remove fixing clips (T),
disconnect heater elements from connection box
(P) and extract elements (FMD).
Mount new elements in reverse order, close side
covers and restore electrical connections.
6.2 Fan replacement
Open the driptray. Disconnect the electric supply (R). Unscrew fixing bolts and remove old fan.
Mount new fan in identical position. Use an anti-corrosion compound when remounting the fixing
bolts.

31114051EN-06
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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.
7 Spare parts
Spare parts Optigo FMD
1 Fan guard
2 Fan motor
3 Drain tray kit
4 Electrical heater
5 Side cover - hairpins side
6 Side cover - connections side
7 Drain line electrical heater (optional, not shown)
Contact your local Alfa LU-VE representative for spare parts order and assistance.
①
②
③
④
⑤
⑥

alfa.luvegroup.com