Carrier CU-O Series, GCU401, HCU451, GCU501, HCU501 Use & Maintenance Instructions
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USE & MAINTENANCE INSTRUCTIONS
BEDIENUNGSANLEITUNG
INSTRUCTIONS D'USAGE ET ENTRETIEN
MANUALE USO E MANUTENZIONE
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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
1. Description of the unit ....................................................................page 4
1.1 How the unit works ............................................................................page 4
1.2 Safety devices and safety measures ................................................page 4
1.3 Synopsis of signs ..............................................................................page 5
1.4 Residual risks ....................................................................................page 6
2. Technical features of the unit ........................................................page 7
3. Intended uses ..................................................................................page 7
3.1 Dangers deriving from using the unit for purposes
other than those it is designed for ....................................................page 7
4. Moving the unit................................................................................page 8
5. Installation........................................................................................page 8
5.1 Signs..................................................................................................page 8
5.2 Dimensions of unit and packing ........................................................page 8
5.3 Commissioning ..................................................................................page 9
5.4 Area surrounding the unit to be kept clear ........................................page 9
6. Assembly and preparation for commissioning ............................page 9
6.1 Cleaning the unit................................................................................page 11
6.2 Connecting the unit to external power sources ................................page 11
6.2.1 Power mains connection ..................................................................page 11
6.2.2 Water mains connection ....................................................................page 12
6.3 Checks, adjustments and settings ....................................................page 12
6.4 Setting of the controll and power devices..........................................page 12
7. Start-up ............................................................................................page 13
7.1 Electrical controls ..............................................................................page 13
7.1.1 Control panel ....................................................................................page 13
8. How to use the unit ........................................................................page 13
8.1 Description of the unit’s work cycle ..................................................page 13
8.2 Diagram of the unit’s electrical system ..............................................page 13
9. Maintenance and repairs ................................................................page 14
9.1 General maintenance operations ......................................................page 14
9.2 Special maintenance operations ......................................................page 14
9.3 Operations to be carried out by qualified personnel
or by the manufacturer ......................................................................page 14
9.4 Troubleshooting guide ......................................................................page 14
9.5 Parts subject to wear and spares ......................................................page 15
10. Disposal of packaging ....................................................................page 15
11. Disassembling the unit ..................................................................page 15
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List of contents
Thank you for choosing a uniblock product.
Please read this booklet carefully - it has been specially designed to provide
advice and information on how to install, use and maintain the unit correctly, so
as to use it to the best of its capacities.
The term CAUTION is used to indicate situations that may cause damage to
the unit. These appear in italics.
The term WARNING is used to indicate situations that might endanger the
safety of operators. These appear in italics and, in some case, also in bold.
All measures indicated in this catalogue are stated in millimetres
T he CU-O range consists in:
1. a condenser unit, with air or water condensation installed external to the cell
2. an electrical control panel, located on the condenser unit
1.1 How the unit works The units CU-O are condensing parts operating by means of a sealed or semisealed a/c mains powered refrigerating compressor (three-phase), using HFC
refrigerating liquids.
1.2 Safety devices and safety measures
The following mechanical safety devices are supplied by the manufacturer (fig. 2):
1. fixed side guards of the evaporator and condenser units: these are fixed to the
metal casing with locking screws.
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LEGENDA
fig.1
1
2
fig.2
1
1
1
1
1. DESCRIPTION OF UNIT
The following electrical safety devices are supplied by the manufacturer:
1. Fan thermal protection (incorporated into the motors) with manual resetting:
protects electric fans against excessive current absorption.
2. High pressure switch with manual resetting: protects against excessively high
pressure.
3. Thermistors or thermostats with manual resetting: protects the motor against
overheating.
4. Minimum/maximum tension electronic relay (monitor) with automatic resetting
(optional).
WARNING
Safety devices have been designed by the manufacturer to ensure the safety of
operators while carrying out their work
1.3 Synopsis of labels The following caution and warning signs have been placed on the unit by the
manufacturer:
INDICATION:
TYPE OF REFRIGERATING LIQUID
WARNING:
CAUTION!
hot and/or cold parts
CAUTION:
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ATTENZIONE! PERICOLO
Volt
Phases
Hz
COLLEGAMENTO UNIBLOCK
UNIT ELECTRICAL CONNECTION
CONNEXION DE L'UNITE'
EL EK TR ISCH. AN SCHLU S S
CONEXION DE L'UNIDAD
COLLEGARE QUESTO CAVO AD UN INTERRUTTORE MAGNETOTERMICO. MAI
DIRETTAMENTE ALLA LINEA PRINCIPALE.
CONNECTION SHOULD ALWAYS BE MADE FROM A FUSED ISOLATOR. NEVER CONNECT
THE CABLE TO THE MAINS SUPPLY LINE DIRECTLY
LA CONNEXION DOIT ETRE EFFECTUEE AU MOYEN D'UN INTERRUPTEUR MAGNETOTHERMIQUE. JAMAIS CONNECTER LE CABLE A LA LIGNE PRINCIPALE DIRECTEMENT
DER ANSCHLUSS DES KABELS SOLL DURCH EINEN THERMOMAGNETSCHALTER
FOLGEN. KEIN DIREKTER ANSCHLUSS DER HAUPTSPEISELEITUNG
CONNECTAR EL CABLE A UN INTERRUPTOR MAGNETOTERMICO. Y NUNCA
A LA LINEA DIRECTAMENTE
R 404 A
3ETA237
SCARICO CONDENSA
CONDENSATE DRAIN LINE
ECOULEMENT DE CONDENSATION
KONDENSATABLAßROHR
DESAGÜE CONDENSACíON
Direction of rotation
1.4 RESIDUAL RISKS
Below we list all the situations - from the delivery of the unit to its demolition
- in which the user will need to exercise caution in order to avoid damage to
persons.
CHAPTER 4 - Positioning the unit
Maximum caution should be used in ensuring that no one passes through
the area while the suspended load is being handled, in order to avoid any
chance of damage to persons.
CHAPTER 9 - Maintenance
Condenser and evaporator groups’ fins: any maintenance operations must
be carried out using personal protection devices (e.g. gloves) in order to
avoid any chance of damage to hands.
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GIALLO/VERDE JAUNE/VERT
GELB/GRUEN YELLOW/GREEN
L2
L1
L3
V.400/3~/50 Hz.
The specific technical features of each CU model are indicated on the data plate
attached to the unit (fig. 3).
The CU-O ranges are air condensing units manufactured to operate automatically.
Using the machine for any purposes other than those envisaged represents an anomaly and may seriously endanger people’s safety.
3.1 Dangers deriving from using the The unit is not designed to operate in premises where explosives are stored.
unit for purposes other than Therefore, it is categorically forbidden to use it in locations where any risk of
those it is designed for explosion exists.
Should the user wish to use the unit for any purposes or in any fields other than
those intended (see ch. 8, section 8.2 of this manual), or wish to modify the unit
in any way, he should consult the manufacturer/distributor about any contraindications or dangers that may derive from the incorrect use of the unit.
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2. TECHNICAL FEATURES OF THE UNIT
fig.3
Mod.
Mod.
Matricola
Serial Number
Ten si on e
Vol tage
Assorb. Marcia
Run Absorption
Refrigerante
Refrigerant
Massa
Mass
AKw
Kg
Via Martin L. King, nr. 30
46020 PEGOGNAGA
(Mantova) - Italy
ZANOTTI
SS..pp..AA..
Modello
Model
Potenza compressore
Compressor power
A
Assorb. Max
Max Absor.
Kw
Schemi
Diagr.
1) Anno di costruzione
2) Codice unità "CARRIER"
3) Numero matricola
4) Tensione
5) Assorbimento Marcia (Macchina)
6) Assorbimento massimo
7) Assorbimento di spunto (Macchina all' avviamento)
8) Potenza nominale compressore
9) Refrigerante : Tipo ; Quantità
10) Massa macchina
11) Numero schema elettrico (Progetto)
Carrier Refrigeration AB
A
Ass. Spunto
Start. Abs.
Kg
3. INTENDED USES
1) Year of manufacture
2) Carrier unit code
3) Serial number
4) Voltage
5) Operating current
6) Maximum current
7) Starting current
8) Compressor’s nominal power
9) Refrigerating liquid Type; Quantity
10) Mass of the unit
11) Electric diagram (Project) number
The unit can be moved with lifting and transport devices. (Fig.4)
WARNING
Take the utmost care in ensuring no one passes through the platform truck’s
manoeuvring area, so as to avoid any risk to personnel while the load is
being handled.
The unit is shipped packed in a wooden case or in a wooden crate: the
movement has to be done securing the packaging with a sling in an appropriate way.
Take special care in ensuring that the packing crate containing the unit is not lif-
ted too quickly to avoid oscillations which may damage or break the unit.
5.1 Signs The Manufacturer has envisaged the posting of the following caution and warning signs:
Caution: Low /high temperature
Switch off before handling the unit
Caution: danger
5.2 Dimensions of unit and packing CU range units come in different sizes, as indicated in the following diagrams (fig. 5-6).
CU 401 - 451 - 501 - 631 /O
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5. INSTALLATION
fig.4
4.
POSITIONING THE UNIT
fig.5
* delivery pipe
** suction pipe
Cod. H G
GCU401 10 22
HCU401 10 28
GCU451 12 28
HCU451 12 35
GCU501 12 28
HCU501 12 35
GCU631 12 28
HCU631 12 42
Mod. A B C D E F
CU401 52 542 1075 105 532 28
CU451 52 602 1575 105 642 28
CU501 52 602 1575 105 642 28
CU631 83 802 1725 105 742 28
C
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ø G**
ø H*
E
F
A
B
PACKING
5.3 Commissioning In order to achieve optimum performance, the unit must be:
a) Place the cell in a well ventilated room, away from heat sources .
b) Check that the unit has adequate aspirating and extracting power.
5.4 Area surrounding the unit In order to allow it to work properly and to facilitate its maintenance in safety conditions, the unit should be installed providing the minimum spatial requirements
for opening the unit, indicated in figs 5.
Ensure that no damage has occurred to the unit or the equipment it contains
during transportation, particularly to the components fixed to the electric control
panel door and to the refrigerating system pipes. To install the unit, proceed as
indicated in the diagrams, taking special care to level the unit (fig.7).
Connect the condensing unit to its evaporator following the diagrams of the fig.7
and using pipes with the correct diameter as indicated in the enclosed tables.
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fig.6
Mod. A B C Kg
CU401-O 670 1350 810 56
CU451/501-O
780 1850 865 89
CU631-O 880 2000 1100 114
A
B
C
6. ASSEMBLY AND PREPARATION PRIOR TO COMMISSIONING
fig. 7
PIANO PAVIMENTO
fig. 7.a
-Section of suction
line in an installation
having the compres
sor sited underneath
heevaporator
Insulate the whole
suction line
FLOOR PLANE
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PIANO PAVIMENTO
fig.7.b
Insulate the whole suc-
tion line
-First section of the
suction line in an
installation having
the compressor
sited above the
evaporator (difference of level less
than 3 mt)
fig.7
PIANO PAVIMENTO
fig.7.c
Insulate the whole
suction line
-First section of the
suction line in an
installation having
the compressor
sited above the
evaporator (difference of level
more than 3 mt).
FLOOR PLANE
FLOOR PLANE
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