Carrier MDB121NO170F, MDB121TO170F, BDB121NO170F, BDB121TO170F, MDB123TO170F Use And Maintenance

USE AND MAINTENANCE

BEDIENUNGSANLEITUNG

INSTRUCTIONS D’USAGE ET ENTRETIEN

USO E MANUTENZIONE

DB-O

DB-O

2

a = Condensing Unit • Verflüssigungssatz • Unité de Condensation • Unità Condensante

b = Cooler • Verdampfer • Evaporateur • Unità Evaporante

Pipe connections

Rohranschlüsse

Raccordements

Raccordi

Code Cooling capacity Nominal horsepower Voltage

Running Nominal absor. Max. Absor. Refrigerant Air Flow Air throw Net Weight Suction line Liquid line

Code Kälteleistung Nennleistung Spannung

Nennaufnahme bei Betrieb

Nennaufnahme max.

Kältemittel Luftmenge Luftwurf Poids Net Saugleitung Flüssigkeit

Code Puissance frig Puissance nominale Tension

Absorp. nomin. en marche Absorp. max

Réfrigérant Débit d’air Projection d’air Nettogewicht Aspiration Liquide

Codice Potenza Frigorifera Potenza nominale Tensione

Assorb. nom. in marcia Assorb. mass. Refrigerante Portata d’aria Freccia d’aria Peso Netto Aspirazione Liquido

Ta/Tc (°C) Watt HP Kw Volt/Ph/Hz Kw A A m

3

/h m Kg

ø mm ø mm

ab

MDB121NO170F

+30 / 0 1096 1/2 0,4 230/1~/50 0,6 3,8 5,4 R404A 600 4 39 13 12 6

MDB121TO170F

+30 / 0 1162 5/8 0,5 230/1~/50 0,7 4,3 7,9 R404A 600 4 43 13 12 6

BDB121NO170F

+30 / -20 761 1 0,7 230/1~/50 0,8 4,8 7,6 R404A 600 4 43 13 12 6

BDB121TO170F

+30 / -20 965 1,2 0,9 230/1~/50 0,8 5,0 7,5 R404A 600 4 46 13 12 6

MDB123TO170F

+30 / 0 1332 3/4 0,6 230/1~/50 0,8 5,0 8,4 R404A 600 4 43 13 12 6

BDB123TO170F

+30 / -20 1096 1,7 1,3 230/1~/50 0,9 5,5 11,3 R404A 600 4 50 13 12 6

MDB221TO170F

+30 / 0 2243 1,2 0,9 400/3N~/50 1,5 4,3 5,9 R404A 1200 4 61 19 16 10

BDB221NO170F

+30 / -20 1507 1,7 1,3 230/1~/50 1 6,9 11,9 R404A 1200 4 61 19 16 10

BDB221TO170F

+30 / -20 1773 2 1,5 400/3N~/50 2,2 5,7 11,9 R404A 1200 4 69 19 16 10

MDB135NO170F

+30 / 0 3516 1,5 1,1 400/3N~/50 1,8 5,3 7,0 R404A 1800 9 62 28 16 10

MDB135TO170F

+30 / 0 4019 2 1,5 400/3N~/50 2,3 6,2 7,8 R404A 1800 9 70 28 16 10

BDB135NO170F

+30 / -20 2295 2 1,5 400/3N~/50 2,4 6,3 12,5 R404A 1800 9 72 28 16 10

BDB135TO170F

+30 / -20 2613 3 2,2 400/3N~/50 1,9 5,5 7,5 R404A 1800 9 78 28 16 10

- Maximum Outside temperature - Maximale Umgebungstemperatur - Temperature éxtérieure maximaIe- Limiti temperatura esterna : 45°C

DADATTAASHEET • DA

SHEET • DA

TENBLA

TENBLA

TT • FICHE TECHNIQUE • SCHEDA

TT • FICHE TECHNIQUE • SCHEDA

TECNICA

TECNICA

3

SERVICE SHEET - SERVICEBLATT - FICHE DE SERVICE - FOGLIO SERVIZIO

DATE - DATUM OPERATION -MASSNAHME SERVICE FIRM - SERVICEFIRMA

SIGNATURE- UNTERSCHRIFT

DATE - DATA OPERATION - OPERAZIONE ETS DE SERVICE - DITTA ASSISTENZA SIGNATURE - FIRMA

T

hank you for choosing our refrigerating unit. This model is equipped with a highly evolved electronic control panel that dispenses with a series

of conventional components such as timers, thermostats and thermometers while offering the facility for straightforward personalisation of the
control program to suit your needs. The panel also provides a self-diagnostic function showing the nature of any functional anomalies so that
they can be solved fast. This operation and programming manual has been published to assist you, please read it carefully.

1) OPERATION

The distinguishing feature of this unit is that it is formed of two separate parts: the condensing unit with remote electronic control panel, for instal-

lation outside the coldroom , and the evaporator for installation inside the room. This design solution eliminates problems related to space
restrictions outside the cell. The two units can be installed at a distance from each other. The air is drawn through the evaporator by means of
the motor driven fan and exhausted through the grids on the sides. In the evaporator, the air drawn in by the motor driven fan units is cooled
by the heat exchanger and expelled from the front of the unit. The temperature is monitored by room sensor. Once the set-point is reached the
refrigeration plant is stopped. Defrosting is automatic by means of electrical heaters in the evaporator; this cycle terminates in correspondence
with the "defrost end" temperature set on the control unit and detected by a sensor. The defrost water is collected in a tray located beneath
the evaporator from where it is drained to outside the rooml.

2) INSTALLATION

For correct installation, proceed thus:

1) Position the condenser unit on floor level outside the coldroom.

2) Secure the evaporator unit to the coldroom ceiling (pict. 1) as follows:

2A) Open the fan holder bottom ‘A’ by

loosing screws ‘B’ (pict. 2-3).

2B) Drill the fixing holes on the

coldroom ceiling observing the
recommended distance from the
wall (pict. 4).

2C) Secure the evaporator using the

supplied components (pict. 5):

1 - Threaded bar
2 - Washer
3 - Nut

2D) Hook up the evaporator to the electrical supply utilising the terminal board located inside

the junction box. Close the junction box and clamp the cable so that it is clear of the fan
blades.

2E) Re-close the air-cooler cover and then make the refrigeration connections (pict. 6).

REMOTE CONTROL PANEL INSTALLATION

Unscrew the lateral fixings to remove the remote control panel cover plate (pict. 7).

Fix the base plate in the desired position using the pre-drilled

holes and making sure it is level (pict. 8).

Replace the cover plate by performing the operation indicated at

pict. 7 in reverse.

Adjust the cable connection between the control panel and the

unit, making sure it does not interfere with existing cable
connections.

To assure optimal operation of the refrigerating unit:

A) Restrict the number of times the coldroom is opened.
B) Make sure that the unit has an efficient air intake and expels a generous amount of turbulent air.
C) Position the unit on horizontal planes..
D) Avoid to place the condensing unit in closed ambient or not ventilated.

4

pict. 3pict. 2

pict. 4 pict. 5

pict. 6

Condensing unit

Evaporator

pict. 1

pict. 7

pict. 8

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100-150

B

A

3

1

2

2

1

3) ELECTRICAL HOOK-UP

To make the correct electrical connections:

1) Make sure the line voltage corresponds to the voltage indicated on the dataplate of the unit (± 10%).

2) To reach the electronic panel it is necessary to remove the front cover (C) of the condensing unit (pict.1). For this operation remove the fixing
screws and position the selector (A) on 0.

3) Unscrew the screws (B) indicated in pict. 2 and remove the cover from the electronic panel.

LINE CABLE FOR SINGLE PHASE UNITS (230 V)

- Remove the plug (D) (pict.2) and insert a cable gland
PG16. Insert the power cable (of the section indicated in
the table of fuses) in the cable gland and connect:

1) the phase wire to the terminal1 (L1) of the isolator Q1

2) the neutral wire to the terminal 5 (N)

3) the protection wire (earth) to the terminal PE

- Tighten the cable gland.

LINE CABLE FOR THREE-PHASE UNITS (400 V)

- Remove the plug (D) (pict.2) and insert a cable gland PG 16. Insert the power cable (of the section indicated in the table of fuses) in the cable
gland and connect:

1) the phase wires to the terminals 1 (L1) - 3 (L2) - 5 (L3)

2) the neutral wire to the terminal 7 (N)

3) the protection wire (earth) to the terminal PE

- Tighten the cable gland.

CONNECTION CABLE DOOR HEATER

- Remove the plug (E) (pict. 2) and insert a cable gland PG 11. Insert the cable of the door heater and connect:

1) the phase wire to the terminal 40 of the electrionic control panel (G)

2) the neutral wire to the terminal N of the electronic control panel (G)

3) the protection wire (earth) to the earth terminal (60) GND

- Tighten the cable gland.

Remeber that the voltage in output to the card is 230 V 1Amp. MAX. It is necessary to protect the door heater with a fuse (by costumer).

MICRO-DOOR CONNECTION

- Remove the plug (F) (pict.2) and insert a cable gland PG 11.

- Insert the cable deriving from the micro-door and connect the bands to the terminals 19 and 20 of the electronic control panel (G) after remo­ving connection bridge .

The installation has to follow the sequence:
closed door - micro-door contact closed
opened door - micro-door contact opened

- Tighten the cable gland.

WARNING: do not give voltage to the micro-door as it is fed with voltage deriving from the electronic control panel (low voltage).

When the operations for the electronic panel connection have finished close with the screws B (pict.2). Close the front cover (C) of the conden-

sing unit (pict. 1).

4) PROCEDURES BEFORE STARTING

Before switching on the unit check that:

The fixing screws are properly tightened
The electrical and refrigeration connections have been made correctly

If the unit has been opened check that:

No tools have been inadvertently left inside the enclosure
The enclosure has been assembled correctly
There are no gas leaks
The panels have been fitted correctly.

5) PLACING INTO SERVICE

Perform all the above mentioned connections and then the unit can be started.
A period of pre-heating is required; this is achieved by powering up the unit without switching on the control unit for at least 2 hours (3 hours in

cold climates). This procedure must be repeated whenever the plant is idle for periods in excess of 12 hours.

5

pict. 1

pict. 2

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L

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G

C

B

A

F
E
D

Q1

PE

6) DESCRIPTION OF ELECTRONIC PANEL

1) Compressor LED (GREEN):
LIT: the compressor is running.The unit is cooling.
FLASHING: the compressor is a delayed start mode.
OFF: the compressor is OFF. The required room temperature has been reached .

2) Evaporator fan LED (GREEN):
LIT: Evaporator fan is running.
FLASHING: the evaporator fan is in a delayed start mode.
OFF: Evaporator fan is off.Unit in Defrost mode.

3) Defrost LED (YELLOW):
LIT: automatic or manual defrost in progress.

4)Alarm LED (RED):
LIT: Alarm mode: malfunctioning of a sensor, or intervention of pressure-stat or room temperature
outside preset limits.
OFF: Unit working normally.

5) DISPLAY: When the machine is not in operation, the label “OFF” and the cell temperature are inter
mittently displayed one after the other on the digital display.When the machine is in operation,
during the normal working cycle, the display indicates the cell temperature. Parameters being set
will be displayed during programming. A "Fault Code" will be displayed during alarm mode.

6) “SET” KEY. Permits entry of room temperature requirements.

7) “DOWN” KEY. Key to decrease data values.

8) “MAN.DEFR./UP” KEY. Key to increase data values. Press for 8 seconds at least to initiate manual defrost as well.

9) Key “T.A.A.” Key to mute audible alarm.
This alarm is not fitted as standard to the unit but can be added by the client. To connect use the free terminals 1 & 2 (volt free) on the internal
electronic panel. Terminal 2 should have a live feed brought to it.

10) “ON/OFF” KEY.Main switch.

11) “LAMP” KEY.Push to turn room lamp ON/OFF.A red LED lights when lamp is ON.

7) PROGRAMMING

With the unit in normal operating mode,the only active keys are "ON/OFF" (10) and "LAMP"(11). The latter is always operative except when in

programming mode.

Cell temperature programming:

- Press key (10) to turn ON unit.The actual room temperature will be shown on the display (5).In this condition the unit is ready for program­ming.It is necessary therefore to set the required room temperature bearing in mind the limits of the range which the unit is able to operate.

- Press the SET (6) key (the yellow LED will light).The last set temperature will be displayed on the display screen (5) which showes the set
value.

Press the set key (6): the yellow led will light for one second and the display (5) will start flashing a few seconds later, indicating the set tempera-

ture. If you wish to change the setting, use the following keys:
(8) to raise set temperature
(7) to lower set temperature

Once the required setting is displayed, press the set key (6) to confirm. The unit is now fully operational and no other programming is requi-

red. The refrigerating cycle is fully automatic according to factory-set parameters, that can eventually be modified by authorised personnel
only.

8) ALARMS

When a fault is detected,the red Led in key (4) will be lit and a fault code displayed on the screen (5).This code enables a speedy identification

of the problem and should be reported when making the service call.(The audible alarm will also sound if fitted).

HIGH TEMPERATURE ALARM

The label (HI) and the cell temperature are intermittently displayed one after the other.

Alarm relay activated

Causes: - The door has been opened too frequently - The product load in the cell exceeds cell capacity - The temperature of the products
stored in the cell is too high - Refrigeration system malfunction

LOW TEMPERATURE ALARM

The label (LO) and the cell temperature are intermittently displayed one after the other.

Alarm relay activated

Causes: -Electronic control unit malfunction. Solution: -Call technical assistance service

AMBIENT TEMPERATURE SENSOR ALARM

The label (EO) appears on the digital display.

Alarm relay is active

Causes: -The sensor is not connected. Solution: -Replace sensor

EVAPORATOR SENSOR ALARM

The label (E1) and the cell temperature are intermittently displayed one after the other.

6

Minimum Temp. Maximum Temp

M RANGE (Medium temperature) - 5 °C +10 °C

B RANGE (Low temperature) - 25 °C - 15 °C

E
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5910

3

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1

67811