LONGONI 3700/00 User manual

USER MANUAL
GB
LONGONI DIVISIONE FREDDO s.r.l. unipersonale
Via Bongiasca 762/1 –21020 Comabbio(VA) ITALY –Tel.[phone] Fax [phone]
www.longoni.it –e-mail: [e-mail]
Cap.Soc. €.13.000,00 i.v. – REA 177524 Varese- Mecc. VA002116- Reg.Soc.Trib.Varese 17825 C.F. 06704340154 P.IVA IT 01597320124

2
INDEX
Pag.
1 –Introduction 3
2 –General warnings 3-4
3 –General precautions 5
4 –Warranty conditions 5
5 –Identification plate 6
6 –Technical specifications 7-8
7 –Machine description 9
8 –Health and safety precautions 9-10-11-12
9 –Preparation of premises and machine installation 13
10 –Accessories and assemblage 14-15
11–Start-up, operation and adjustment 16
12–Control panel 17-18
13 –Food hygiene and cleaning 19
14 –Maintenance and checks 20
15 –Transport, handling and storage 21
16 –Fault and possible solutions 22-23
17 –Emergencies 24
18 –Scrapping the machine 24
19 –Electric scheme 25-26-27

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INTRODUCTION
This instruction manual should be rear before carrying out any operation on the
machine.
This instruction manual has been designed and organised to permit quick easy
consultation. For all topics discussed, illustration or tables are provided into various
chapters.
WARNINGS
This instruction manual is aimed at the owner and/or user of the machine and
employees assigned to handling, installation and scrapping of the machine.
This manual provides detailed, information and instruction on:
Technical specifications of the machine
Scheduled use of the machine
Handling and installation of the machine
Maintenance and scrapping of the machine
This manual should be considered an integral part of the machine, which is designed
for professional use but can never be substitute for adequate preparation and
experience on the part of the user.
The manufactured reminds the customer, user of the machine, of the obligation to
comply with the current legislation concerning health and safety at work.
This manual should be considered an integral part of the machine and must be kept
for future consultation until the machine is scrapped.

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This manual reflects the state of the art using at the time of sale of the machine and
cannot be considered inadequate due to subsequent updates on the basis of new
experience.
The manufactured reserves the right to make any updates necessary to the machine
and the instruction manual without this entailing the obligation to updates machines
and/or manual pertaining to provide to previous productions. The manufactured will
nevertheless provide the customer with any further information requested and
likewise will take due account of any proposals for improvement of this manual.
If the machine is sold, the customer is kindly requested to inform the manufacturer of
the address of the new owner.
The manufacturer declines all liability for injuries sustained by person or animals or
damage to things deriving from:
a. inappropriate use of the machine or use of it by personnel not trained in the use
of professional machine
b. use contrary to the specific national legislation
c. incorrect installation
d. electrical power supply faults
e. inadequate cleaning and maintenance
f. non-authorised modifications or work
g. use of non-original spare parts not specific for the model
h. total or partial failure to observe the instructions contained in this manual
i. exceptional event

5
GENERAL PRECAUTIONS
Do not leave the machine unattended, especially if there are children in the
vicinity
The liquid contained in the cold accumulator is not-toxic but nevertheless
should not be swallowed.
Only place pre-refrigerated or cold food in the refrigeration unit.
The conservation of food with high water content can cause the formation of
condensation: this does not affect correct operation of the machine.
Before carry out any installation, cleaning, maintenance or repair operation,
turn off the main switch and unplug the unit from the electrical power socket
interlocked by means of a switch.
WARRANTY CONDITIONS
The machine warranty conditions are listed below:
the duration of the warranty is one year ( i.e. 12 consecutive months from
the date of purchase);
the warranty excluded the electrical and electronic part and components the
machine which, by their nature or as a result of their application, are subject
to deterioration or wear;
the warranty lapses if the customer disassembled, modifies or attempts to
repair the machine on its own or by means of third parties not authorised by
manufacturer or the authorised dealer;
this appliance must only be repaired by one of the manufacturer’s
authorised workshop or by manufacturer itself. The customer is responsible
for all the shipment risk and charges to and from the aforementioned
workshops;
all disputes will be referred exclusively to the Court of Varese.

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IDENTIFICATION PLATE
The identification plate, containing all the data necessary for identification of the
machine, is affixed as shown by the arrow in figure n° 2.
The following data are provided:
manufacturer identification;
machine model;
serial number;
CE conformity mark;
Machine climate class;
Technical specifications.
Fig.1
Modello/Model : 3700\00
Matricola/Series N. : 00A00A0000
Gas R452/A : gr. 360 Cap. : 420 lt
Volt : 220 Hz : 50 Watt : 500
Classe : N
LONGONI DIVISIONE FREDDO S.r.l.
V.Bongiasca, 762/1-COMABBIO(VA)ITALY-tel.[phone]-fax [phone]
www.longoni.it [e-mail]

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The data contained in the identification plate must be communicated when making
any service requests. The plate shown in the figure is intended purely as an example.
TECNICAL SPECIFICATIONS
The main technical specifications of the various models are given in the tables below:
LIGHTING
MODELL
Type of
lighting
Power supply
Voltage ( V)
Ligth power
M1
BAR LED
24 V
12.5 W
M2
BAR LED
24 V
12.5 W
M3
BAR LED
24 V
12.5 W
MAXI M1
BAR LED
24 V
12.5 W
MAXI M2
BAR LED
24 V
12.5 W
DIMENSIONS
MODEL
Cabinet dimensions
Packaging dimensions
M1
730x650x1900
830x770x2100
M2
1320x650x1900
1520x770x2100
M3
1940x650x1900
2110x770x2100
MAXI M1
900x650x1900
1030x760x2100
MAXI M2
1720x650x1900
1850x760x2100

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POWER SUPPLY
Model
Power
supply
Voltage
(V)
Power supply
Frequency
( Hz)
Tot.
Corrent
absorbed
(A)
Tot.
Power
absorbed
(W)
Static
refrigeration
system
(-15/-24°C)
220/ 240
1 ph+ T
50/ 60
2.9
650
Static
refrigeratio
system
(+2/+10°C)
220/ 240
1 ph+ T
50/ 60
2.5
550
Static
refrigeration
system
(-2 / +10°C)
220/240
1 ph+ T
50/ 60
2.9
650
Static
Refrigeration
system Maxi
(-15/-25°C)
220/240
1 ph + T
50/60
4
900
Static
refrigeration
system maxi
( +2/+10°C)
220/240
1 ph +T
50/60
2.9
650
Static
refrigeratio
system Maxi
(-2/ +10°C)
220/240
1 ph + T
50/60
3.3
720
Ventilated
refrigeration
system
(+2/+20°C)
220/240
1 ph + T
50/ 60
2.5
550
Ventilated
refrigeration
system
(-5/-20°C)
220/240
1 ph + T
50/ 60
4
900
Ventilated
refrigeration
system Maxi
(-5/-20°C)
220/240
1 ph + T
50/60
5.5
1200

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MACHINE DESCRIPTION
The food chilling cabinet, comprise the fallowing parts:
All models have:
a machine body made up of insulated panel and a oxidised frame;
door with an oxidise aluminium frame, plus triple glazing;
static refrigeration with a ventilated condenser, and an aluminium-fin
evaporator installed on the top of the positive temperature cabinet (+2/+10°C),
fixed tube evaporator for the static negative cabinet, and built-in chilled racks
for the negative temperature cabinet (-15/-24°C);
an airtight condensing unit and an air-cooled condenser with a remote
thermostat for automatic temperature control;
a ceiling light with an on/ off switch located on the control panel.
For a ventilate models:
a fin-pack evaporator installed at the top of the cabinet; a axial fan for even
temperature distribution ( +5/-20°C);
“ half cycle reverse” defrosting.
HELT AND SAFETY PRECAUTIONS
The manufacturer has designed and built the machine taking account of the results of
a preventive accurate SAFETY an HEALTH risk analysis.
The protection and devices fitted on the machine therefore comply with the safety
levels established by the specific EEC directives.
Information on and illustrations of said protections and devices to enable the machine
user to operate in condition of maximum possible safety are provided below.

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MECCANICAL PRECAUTION
The machine is provided with protections designed to prevent accidental contact
with the moving parts. in particular:
The motor fan is protected by a metal grille and a stainless steel fastening
secured by means of screws to prevent access (danger of shearing) (see fig. 2).
Fig. 2
The fan motor, protected by a stainless steel grille, is installed at the top of the
ventilated chilling cabinet (see fig. 3).
Fig.3

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ELECTRICAL PRECAUTION
The precautions established by the 73/23/EEC directive and the EN 60335 standard
have been adopted to protect against the danger of direct and indirect contacts and all
the scheduled tests have been performed as certified by the CE declaration of
conformity (see attachment B). All the tests provided for by the current technical
regulations for implementation of the EEC directive concerning EMG (regulation
89/336) have also been performed. In particular:
The components are all guaranteed by the manufacturers (each one bears the
guarantee marking).
The equipment and all other electrical component are fitted inside closed
compartments in order to prevent any DIRECT contact the direct part. The
electrical current danger signal is affixed to the electrical panel protection.
To protect against INDIRECT contacts, all the metal parts are earthed by
means of an appropriate lead. Via the-plug-socket connection, this must ensure
electrical continuity between the machine and the general earth system; the
suitability and efficiency of the general system and the accessory equipment
necessary for cutting off the power supply in the event of a fault are the
responsibility of the machine user.
Remember that the socket, interlocked with the switch, must be positioned at a height
of approximately 130 cm from the floor and in a position that does not expose it to
knocks and damage.

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HYGIENE PRECAUTION
The refrigerant system contains Freon gas R404 and contains no CFC to ensure
protection of the ozone layer.
NOISE PRECAUTIONS
The compressor, the only possible source of noise, is located inside the base and
therefore the machine does not produce irritating or harmful noise (Fig. 5).
Fig. 5

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PREPARATION OF PREMISESAND MACHINE INSTALLATION
The room in which the machine will be installed, like the various existing system,
must comply with current local regulations and technical specifications.
Position the machine in a dry well-ventilated place in compliance with the local
technical-health regulation. In particular:
Avoid positioning the machine near sources of heat (radiator, ovens, burners,
etc.) or draughts. If this is not possible, the following minimum distances must
be observed: 50 cm from coal or oil cooker and 50 cm from electric/gas
cooker.
To avoid the risk of food spoiling due to poor refrigeration, do not expose the
machine to direct sunlight.
Make sure that the machine ventilation apertures are not covered.
For flush installation, leave at least 5 cm between the back grille and the wall.
Carefully unpack the machine, removing the main cardboard box and then all the
packaging protection materials.
Once you have removed the packaging, check that the machine is in perfect
condition, and notify the manufacturer or authorised dealer of any damage found
within 48 hours from receipt of the goods.
For installation of the machine, take account of the data given on the identification
plate and the overall dimension (see chapter n°5 n°6).
A free space of approximately 50cm must be left around the machine for operation
and maintenance.
You are strictly forbidden to use the machine, in place, where there is the danger of
explosion or fire due to the presence or development of dust, gas or explosive or
flammable mixtures.
The packaging materials must be disposed of in compliance with current local
regulation concerning industrial and special waste.

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ACCESSORIES AND ASSEMBLAGE
Some models of chilling cabinet have a racks or glass shelves for the product display.
The steel shelf support, are to be fitted into the holes in the side brackets for both the
rack and glass shelves, in accordance with the model (fit the adhesive rubber pads
when installing the glass shelves). See Fig. 6-7-8-9-10.
Fig.6
Place the glass shelves on the 4 (four) shelf support. See fig.7
Fig.7

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Place the racks on the 4 (four) shelf supports. See Fig.8
Fig. 8
A removable rack can be used as the bottom of the negative static chilling cabinet.
This enables an additional shelf to be installed or products that are larger than
standard size to be displayed. See Fig.9
Fig. 9
The negative static chilling cabinets, also have on optional glass shelf kit, which can
be placed on the chilled rack. Position and fasten the feet, which comprise a spacer
and cap, in the holes on the glass shelf, and then place the glass on the chilled racks.
See Fig.10
Fig. 10

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START-UP OPERATION AND ADJUSTAMENT
To obtain the best performance from the refrigeration unit, the following conditions
must obtain:
Ambient temperature = 30° C
Relative humidity R.H. = 60%
You are advises to wait at least two hours before use the system in order to ensure
that the refrigeration circuit is operating efficiently.
Before starting the machine, follow the instructions below:
1. Check that the system and the electrical connections comply with the current
local regulation.
2. Check that the machine voltage specified in the identification plate corresponds
to the line voltage at the socket. If not, suspend electrical connection and call
the manufacturer or authorised dealer.
3. Check correct ear thing of the machine an availability of a main bipolar switch
with differential.
4. If the power supply socket and plug are not the same type, have the socket
replaced by a qualified technician. Do not use extensions or multiple adapters.
The power supply cable and plug must be easily accessible after installation. If
they show signs of wear or damage, they must be immediately replaced by a
qualified technician.

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CONTROL PANEL
The control panel is located on the base, and contains the following commando:
An Electronic thermo regulator: permits regulation of the machine
temperature, switch-on and switch-off of the refrigerating system and lighting
(for use of the thermo regulator, see instruction below). Fig.11
You are advice to switch the light on only when the unit is actually being
used.
Fig. 11
KEYBOARD
A control panel is installed on the front of the appliance. The panel includes a remote
thermostat, a temperature display, an ON/OFF button, and a light switch.
SWITCH THE MACHINE ON
The cabinet has a power switch . Switch this button on to enable the
machine, which will then display, witch will then display the cabinet temperature.
LIGHT SWITCH
The control panel is installed with a light switch that turns on the lights
inside the cabinet.

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THERMOSTAT
1. Set the cabinet temperature by pressing the Set key .
2. After a few seconds the set value.
3. Increase or decrease the set- point value with the Up key or the down key
4. Pres the key to confirmed.
DEFROSTING
The positive temperature and the NO-FROST cabinets come with an automatic
defrosting function.
However the cabinets can also force the defrosting by pressing the button
for a few seconds.
During this cycle, the water conveyed from a drain duct follows into a tray inside the
motor compartment and evaporates during the refrigeration phase.
Any frost on the evaporating grilles on the negative temperature static cabinet, must
be removed when it is more than 10mm thick; then defrost the cabinet manually as
follow:
disconnect the electronic thermo regulator;
turn the main switch off;
unplug the unite from the socket interlocked with a switch;
take all the food out and put in a suitable place;
open the cabinets door to allow the ice to thaw;
wait for the ice to thaw completely;
position the tray under the base and remove the plug at the centre of the
cabinet, so that the water drains in to the tray (N.B. the tray must be at
least 20 cm below the base).
clean the inside of the cabinet thoroughly with a cloth, warm water and
neutral detergent, and then dry completely;
rinse and dry thoroughly using a dry cloth;
re-start the machine according to the instructions in chapter n° ?;
when the cabinet to reach the temperature put the food back inside.

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FOOD HIGIENE AND CLEANING
Before carry out any cleaning operation , disconnect the electronic thermo regulator,
turn the main switch off, and unplug the unit from the socket interlocked with switch.
One a day
Clean the machine parts using a cloth soaked in warm water and neutral
detergent; never use abrasive powder or detergents that could damage the
system internally or externally, especially the glass.
Rinse and dry with a soft cloth.
Once every 15 days
Clean the refrigerator unit condenser with a brush or vacuum cleaner (to clean
the condenser, open the protection grille “unscrew” below the control
panel).See Fig.12
Fig. 12

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In the event of prolonged inactivity
disconnect the electronic thermo regulator;
turn the main switch off;
unplug the unite from the socket interlocked with switch;
take all the food out;
thaw and thoroughly clean the machine with neutral disinfectant products to
protect it from oxidation;
leave the machine door open to prevent the formation of mould, bad smells and
oxidisation;
cover the system to protect it from dust.

MAINTENANCE AND CHECKS
Before carrying out any maintenance operation, disconnect the electronic thermo
regulator, tour the main switch off and unplug the unit from the socket interlocked
with a switch.
Once a day
Check that the power supply cable is in perfect condition; if not, replace it with
another one of the same type.