SIST EN ISO 7371:2000
(Main)Household refrigerating appliances - Refrigerators with or without low-temperature compartment - Characteristics and test methods (ISO 7371:1995)
Household refrigerating appliances - Refrigerators with or without low-temperature compartment - Characteristics and test methods (ISO 7371:1995)
It specifies manufacturing tolerances for extension and compensating cables (other than mineral insulated cables) provided directly to users of industrial processes. These tolerances are determined with respect to the e.m.f.-temperature relationship of Part 1 of the standard. Furthermore, requirements for extension and compensating cables for use in industrial process control are specified.
The main technical changes with regard to the previous edition are as follows: Addition of Subclause 5.4 Connectors. Addition of Clauses 7 Dimensions and 8 Requirements.
Haushalts-Kühlgeräte - Kühlgeräte mit oder ohne Niedertemperaturfächern - Eigenschaften und Prüfverfahren (ISO 7371:1995)
Diese Norm legt die wesentlichen Eigenschaften von Haushalt-Kühlgeräten mit und ohne Niedertemperaturfächern, die fabrikmäßig komplett montiert worden sind, sowie die Prüfverfahren, nach denen diese Merkmale zu überprüfen sind, fest. Sie gilt nicht für Gefriergeräte und Kühl-Gefriergeräte, die in anderen Normen behandelt werden. Sie beinhaltet nicht Kühlleistungs-Eigenschaften und Prüfungen oder besondere Definitionen für Geräte mit Umluft-Kühlung, die in anderen Normen behandelt werden.
Appareils de réfrigération ménagers - Réfrigérateurs ménagers avec ou sans compartiment basse température - Caractéristiques et méthodes d'essai (ISO 7371:1995)
Spécifie les tolérances de fabrication pour les câbles d'extension et de compensation (autres que ceux à isolation minérale) fournis directement aux utilisateurs pour des procédés industriels. Ces tolérances sont déterminées par rapport à la relation fem-température de la Partie 1 de cette norme. De plus, des exigences sont spécifiées pour les câbles d'extension et de compensation pour utilisation dans des procédés industriels. Les principaux changements techniques par rapport à l'édition précédente sont les suivants : Ajout du Paragraphe 5.4 Connecteurs. Ajout des Articles 7 Dimensions et 8 Exigences.
Household refrigerating appliances - Refrigerators with or without low-temperature compartment - Characteristics and test methods (ISO 7371:1995)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 7371:2000
01-december-2000
Household refrigerating appliances - Refrigerators with or without low-temperature
compartment - Characteristics and test methods (ISO 7371:1995)
Household refrigerating appliances - Refrigerators with or without low-temperature
compartment - Characteristics and test methods (ISO 7371:1995)
Haushalts-Kühlgeräte - Kühlgeräte mit oder ohne Niedertemperaturfächern -
Eigenschaften und Prüfverfahren (ISO 7371:1995)
Appareils de réfrigération ménagers - Réfrigérateurs ménagers avec ou sans
compartiment basse température - Caractéristiques et méthodes d'essai (ISO
7371:1995)
Ta slovenski standard je istoveten z: EN ISO 7371:1995
ICS:
97.040.30 Hladilni aparati za dom Domestic refrigerating
appliances
SIST EN ISO 7371:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 7371:2000
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SIST EN ISO 7371:2000
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SIST EN ISO 7371:2000
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SIST EN ISO 7371:2000
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SIST EN ISO 7371:2000
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SIST EN ISO 7371:2000
INTERNATIONAL ISO
STANDARD 7371
Second edition
1995-11-15
Household refrigerating appliances -
Refrigerators with or without
low-temperature compartment -
Characteristics and test methods
- ß6frig&ateurs menagers avec ou
Appareils de refrigka tion menagers
- Carac t&is tiques et m6 thodes
sans compartimen t basse temp&a ture
d ‘essai
Reference number
ISO 7371:1995(E)
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SIST EN ISO 7371:2000
ISO 7371:1995(E)
Contents
Page
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . “. “.
1 Scope
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative references
2
3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
4 Classif ication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Materials, design and manufacture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Required characteristics
. . . . . . . . . 8
7 Determination of linear dimensions, volumes and areas
8 General test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 12
. . . . . .
9 Testing the airtightness of door or lid Seal(s) . . . . . . . . . . . . . . . . . . 16
. . . .
. . . . . . . . . . . . . . . . . . 16
10 Testing the opening forte of door(s) or lid(s)
11 Testing the durability of hinges and handles of door( s) and
16
lid(s) .*.
12 Testing the mechanical strength of shelves and similar
components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
13 Testing the storage temperatures
14 Water vapour condensation test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Energy-consumption test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
16 Temperature rise test (if applicable)
17 Ice-making test (if applicable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
18 Test for absence of odour and taste
26
19 Final test report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
Designation . 26
20
26
21 Marking .
Technical and advertising Iiterature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
23 Instructions for use and maintenance
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii
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SIST EN ISO 7371:2000
0 ISO ISO 7371:1995(E)
Annexes
A Particular conditions for various countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
B Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
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SIST EN ISO 7371:2000
0 ISO
ISO 7371:1995(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 7371 was prepared by Technical Committee
lSO/TC 86, ßefrigeration, Subcommittee SC 5, Construction and testing
of household refrigerators.
This second edition cancels and replaces the first edition
(ISO 7371:1985), which has been technically revised.
Annexes A and B of this International Standard are for information only.
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SIST EN ISO 7371:2000
INTERNATIONAL STANDARD 0 ISO ISO 7371:1995(E)
- Refrigerators
Household refrigerating appliances
with or without fow-temperature compartment -
Characteristics and test methods
Additional safety requirements applicable to mechan-
1 Scope
ical refrigerating Systems of household refrigerators
are given in ISO 5149.
This International Standard specifies the essential
characteristics for household refrigerators, with or
The safety requirements applicable to gaseous and
without a cellar or low-temperature compartment,
liquid fuel heating equipment of absorption-type
which are wholly factory assembled, and lays down
household refrigerating Systems will form the subject
the methods of test for the checking of these
of a future International Standard.
characteristics.
2 Normative references
lt does not apply to food freezers, which are covered
in ISO 5155, or refrigerator-freezers, which are cov-
The following Standards contain provisions which,
ered in ISO 8187.
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
lt does not include refrigerating Performance charac-
cation, the editions indicated were valid. All Standards
teristics and tests, or particular definitions for re-
are subject to revision, and Parties to agreements
frigerators cooled by internal forced air circulation,
based on this International Standard are encouraged
which are the subject of ISO 8561.
to investigate the possibility of applying the most re-
The tests described in this International Standard are
cent editions of the Standards indicated below.
type tests. When it is necessary to verify the per-
Members of IEC and ISO maintain registers of cur-
formante of a refrigerator of a given type in relation
rently valid International Standards.
to this International Standard, all the tests described
ISO 534:1988, Paper and board - Determination of
should in principle be applied to one and the same
thickness and apparent bulk density or apparent sheet
unit.
density.
These tests tan also be made individually for the
-l), ßefrigeran ts -
study of a particular characteristic. ISO 817: Number designa tion.
Where no test method is specified, the particular re- ISO 5149: 1993, Mechanical refrigerating Systems
quirement concerned is to be considered as a rec- used for cooling and heating - Safety requiremen ts.
ommendation.
IEC 335-2-24:1992, Safety of household and similar
The electrical and mechanical safety requirements electrical appliances - Part 2: Particular requiremen ts
. applicable to household refrigerators are specified in for refrigerators, food freezers and ice-makers.
I EC 335-2-24.
1) To be published. (Revision of ISO 817:1974)
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SIST EN ISO 7371:2000
ISO 7371:1995(E) 0 ISO
“one Star” compartment: Compartment in
3.2.5.1
3 Definitions
which the storage temperature (see 3.4.3.2), meas-
ured as described in clause 13, is not warmer than
For the purposes of this International Standard, the
- 6 “C.
following definitions apply.
3.2.5.2 “two Star” compartment: Compartment in
3.1 household refrigerator (hereinafter referred to
which the storage temperature (see 3.4.3.2) meas-
as “refrigerator ”): Insulated cabinet of suitable vol-
ured as described in clause 13, is not warmer than
ume and equipment for household use, cooled by one
-12 “C.
or more energy-consuming means, and having one or
more compartments intended for the preservation of
food, one at least of which is suitable for the storage
3.2.5.3 “two Star” section: Part of a “three Star”
of fresh food.
compartment which is not self-contained (i.e. which
does not have its own individual access door or lid),
NOTE 1 From the Point of view of installation, there are
in which the storage temperature (see 3.4.3.2)
various types of household refrigerators, for example free-
measured as described in clause 13, is not warmer
standing, wall-mounted, built-in, etc.
than
- 12 “C (see 7.2.6).
3.2 Compartments and sections
3.2.5.4 “three Star” compartment: Compartment
in which the storage temperature (see 3.4.3.2)
measured as described in clause 13, is not warmer
3.2.1 fresh food storage compartment: Compart-
ment intended for the storage of unfrozen food which than - 18 “C.*)
may be itself divided into sub-compartments, and in
which the temperatures tan be maintained in accord-
ante with 6.2.1.
3.3 General definitions
3.2.2 cellar compartment: Compartment intended
3.3.1
top-opening type: Refrigerator in which the
for the storage of particular foods or beverages at a
compartment(s) is (arc) accessible from the top.
temperature warmer than that of the fresh food stor-
age compartment, and in which the temperatures tan
be maintained in accordance with 6.2.1.
3.3.2 upright type: Refrigerator in which the
compartment(s is (are) accessible from the front.
3.2.3 low-temperature compartment: Compart-
ment which may be either
3.3.3 Overall dimensions (doors or lids closed):
Measurements of the rectangular parallelepiped,
- an ice-making compartment, or
whose base is horizontal, within which the refrigerator
is inscribed to include the complete appliance except
- a frozen food storage compartment.
for the handle, the protrusion of which, if any, is to
be specified separately.
NOTE 2 A refrigerator may have one or several low-
temperature compartments. Alternatively, it may have no
low-temperature compartment.
3.3.4 Overall space required in use (doors or lids
open): Overall dimensions including the handle, in-
3.2.4 ice-making compartment: Compartment in- creased by the space necessary for free circulation
tended specifically for the freezing and storage of of the cooling air when the appliance is in Service,
water ice-cubes. plus the space necessary to allow opening of the
means of access to that minimum angle permitting
removal of all removable Parts such as Containers and
3.2.5 frozen food storage compartments:
shelves, including the drip tray with water if this has
Compartments intended specifically for the storage
to be removed and emptied manually (see figure 1).
of frozen food. They are classified according to their
temperature, as follows.
“two Star” sections and/or compartments are permitted within the compartment (see 7.2.6).
2) In certain instances,
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SIST EN ISO 7371:2000
ISO 7371:1995(E)
3.3.5.8 rated total storage volume: Total storage
1
volume stated by the manufacturer.
Ei
3.3.6 Storage surfaces
e
L
0
3.3.6.1 shelf: For the purpose of this International
n
2
Standard, a shelf is any hori’zontal surface (shelves,
L
c partitions, etc.) on which food tan be placed.
.-
3
f
t
a lt may be formed by one component or by compo-
0
nents fitted side by side, which may be fixed or re-
movable.
1
Width
3.3.6.2 storage shelf area: Sum of the horizontal
projections of the storage surfaces within the storage
volume, including door shelves and the bottom of
Figure 1 - Overall space required in use (upright
each compartment, determined in accordance with
tYPeI
73 . .
3.3.6.3 rated storage shelf area: Storage shelf area
stated by the manufacturer.
3.3.5 Volumes
3.3.7 load limit(s): Surface enveloping the frozen
3.3.5.1 gross volume: The volume within the inside
food storage volume(s).
Walls of the appliance, or of a compartment with ex-
temal door, without internal fittings, doors or lids be-
3.3.8 load limit line(s): Permanent mark(s) indicat-
ing closed.
ing the limits of
“three Star” frozen food storage
volume(s).
3.3.5.2 rated gross volume: Gross volume stated
by the manufacturer.
3.4 Definitions relating to some Performance
characteristics
3.3.5.3 total gross volume: Sum of the gross vol-
umes of the fresh food storage compartment(s), low-
3.4.1 energy consumption: Consumption of a re-
temperature compartment(s) [including any “two
frigerator over a period of 24 h, running under stable
Star” section(s) and/or campart- ment(s) contained in
operating conditions at an ambient temperature of
a “three Star” compartment], and cellar
+ 25 “C (in the case of class SN, class N and class ST
compartment(s), even if their doors or lids are inde-
refrigerators) or + 32 “C (in the case of class T re-
pendent.
frigerators) (see clause 4) and measured under the
conditions specified in clause 15.
3.3.5.4 rated total gross volume: Total gross vol-
ume stated by the manufacturer.
3.4.2 rated energy consumption: Energy con-
sumption stated by the manufacturer.
3.3.5.5 storage volume: That part of the gross vol-
ume of any compartment which remains after de-
3.4.3 Storage temperatures
duction of the volume of components and spaces
recognized as unusable for the storage of food, de-
3.4.3.1 fresh food storage temperature, tm: Arith-
termined by the method given in 7.2.
metical average of the mean temperatures t,, t2 and
f3 which are the mean internal temperatures meas-
3.3.5.6 rated storage volume: Storage volume ured in topper or brass cylinders (see 8.4) placed at
stated by the manufacturer. given Points in the fresh food storage compartment
as specified in 8.5, i.e. the arithmetical average of the
3.3.5.7 total storage volume: Sum of the storage
extreme values at these Points during a complete
volumes of the appliance, comprising the storage control cycle (see 3.4.6).
volumes of the fresh food storage compartment(s),
3.4.3.2 frozen food storage temperature, t* * *,
low-temperature compartment(s) [including any “two
t
Star” section(s) and/or compartment(s) contained in a **, t* (as appropriate): Maximum temperature of the
“three Star” compartment] and cellar compart- warmest ‘IM” package of a load placed in storage as
ment(s). specified in 8.6.
3
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SIST EN ISO 7371:2000
0 ISO
ISO 7371:1995(E)
3.4.3.3 cellar compartment temperature, tcm: 3.4.6 control cycle: Period between two successive
Arithmetical average of the mean temperature tcl, tc2 Starts, or two successive Stops, of a refrigerating
and tc3 (as appropriate, see figure IO), which are the System, or of a part of a System, under stable oper-
mean internal temperatures measured in topper of ating conditions.
brass cylinders (sec 8.4) placed at given Points in the
3.4.7 stable operating conditions: In the case of
cellar compartment as specified in 8.5, i.e. the arith-
cyclic Operation of a refrigerating System, or of a patt
metical average of the extreme values at these Points
of a System, including any automatic defrost periods,
during a complete control cycle (see 3.4.6).
stable operating conditions are deemed to be reached
when, for each of the “M” packages and topper or
3.4.4 Defrosting
brass cyclinders, the temperatures at all correspond-
ing Points during successive operating cycles agree
automatically defrosted: A compartment is
3.4.4.1
within + 0 ’5 K and there is no marked trend away
automatically defrosted where no action is necessary
from the mean temperature during a period of 24 h.
by the user to initiate the removal of frost accumu-
lation nor to restore normal Operation, and where the
In the case of continuous Operation of a refrigerating
disposal of the defrost water is automatic.
System, or of a part of a System, stable operating
conditions are deemed to be reached when, although
3.4.4.2 semi-automatically defrosted: A compart-
there may be a certain Variation in temperature, the
ment is semi-automatically defrosted where an action
increase or decrease in the temperature of all the
is necessary by the user to initiate the removal of
“M” packages and topper or brass cylinders does not
frost accumulation and normal Operation is restored
exceed 0 ’5 K during a period of 18 h.
automatically, the defrost water being removed
manually or removed and disposed of automatically.
3.4.8 percentage running time, R (apparatus with
on/off control for the refrigerating Source): Under
A compartment is also semi-automatically defrosted
given conditions of ambient temperature and of
where no action is necessary by the user to initiate
internal storage temperature, the ratio
the removal of frost accumulation nor to restore
normal Operation, but where the removal of the de-
R=+x 100
frost water is manual.
where
3.4.4.3 manually defrosted: A compartment is
manually defrosted where an action is necessary by
d is the duration of the refrigerating System
the user to initiate the removal of frost acccumulation
Operation during a whole number of cy-
and restoration to normal Operation requires a further
cles;
action by the User, the defrost water being removed
manually or removed and disposed of automatically.
D
is the total duration of the cycles.
The method of defrosting shall be specified separately
In the case of a refrigerator having two independent
for the fresh food storage compartment(s) and low-
refrigerating Systems, there will be two values for
temperature compartment(s).
percentage running time, one for the fresh food stor-
age compartment and one for the low-temperature
The means of disposal of defrost water may be any
compartment.
of the following types.
3.4.9 ice-making capacity: Quantity of ice the re-
3.4.4.4 automatic disposal of defrost water: Dis-
frigerator is capable of producing within 24 h, or the
posal of defrost water is automatic where the removal
time necessary for the freezing of the water in the ice
and the evaporation of the defrost water does not re-
tray(s) supplied with the appliance.
quire any action by the User.
3.4.10 ambient temperature: Temperature in the
3.4.4.5 manual removal of defrost water: Re-
space surrounding the appliance under test. lt is the
moval of defrost water is manual where an action is
arithmetical average of the mean value of tempera-
necessary by the user to remove the defrost water.
tures tal and ta2, measured (see 8.1 .l) at two Points
located 350 mm from the vertical centreline of the
side Walls of the appliance at 1 m above the floor line.
3.4.5 “M” package: A test package in accordance
of dimensions 50mmxl00mmx
with 8.2,
3.4.11 temperature rise time: Period between the
100 mm, fitted with a temperature Sensor at its geo-
moment when, under specified test conditions, the
metric centre.
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SIST EN ISO 7371:2000
0 ISO ISO 7371:1995(E)
3.6.6 condenser: Heat exchanger in which, after
temperature of the warmest “M” package in the
compression, vaporized refrigerant is liquefied by re-
“three Star” compartment reaches - 18 “C to the
jecting heat to an external cooling medium.
moment when any of the “M” packages (excluding
any “two Star” sections) first reaches a temperature
3.6.7 evaporator: Heat exchanger in which, after
of - 9 “C when the Operation of the refrigerating sys-
expansion, the liquid refrigerant is vaporized by ab-
tem is interrupted.
sorbing heat from the medium to be refrigerated.
3.5 Definitions relating to the refrigerating
3.6.8 thermostat: Device which automatically regu-
System
lates the Operation of a refrigerating System according
to the temperature of an evaporator or of a compart-
3.5.1 refrigerant: Fluid used for heat transfer in a
ment.
refrigerating System, which absorbs heat at a low
temperature and a low pressure of the fluid and re-
absorption-type
jects heat at a higher temperature and a higher 3.7 Definitions relating to
pressure of the fluid, usually involving changes of refrigerators
state of the fluid.
3.7.1 absorption-type refrigerator: Refrigerator in
which refrigeration is effected by evaporation of a liq-
3.5.2 cooling device: Device containing the
evaporator or in thermal contact with the evaporator; uid refrigerant in an evaporator, the vapour thus
it may be a device with fins or may be suitably shaped formed being then absorbed by an absorbent medium
for the storage of frozen food or water ice-cubes. from which it is subsequently expelled at a higher
partial vapour pressure by heating and then liquefied
by cooling in a condenser.
3.6 Definitions relating to compression-type
refrigerators
3.7.2 absorption refrigerating System: Complete
3.6.1 compression-type refrigerator: Ref rigerator System essentially comprising a boiler, a condenser,
in which refrigeration is effected by the vaporization an evaporator, an absorber, and all other Parts con-
at low pressure in a heat exchanger (evaporator) of a taining refrigerant permanently interconnected by the
liquid refrigerant, the vapour thus formed being re- manufacturer by welding, brazing or other means.
stored to the liquid state by mechanical compression
to a higher pressure and subsequent cooling in an-
3.7.3 boller: Heat exchanger in which the absorbed
other heat exchanger (condenser).
refrigerant is expelled from the absorbent medium by
the application of heat.
3.6.2 hermetically sealed motor-driven refriger-
ating compressor: Motor-compressor in which the
3.7.4 absorber: Component in which the absorption
compressor and the electric motor (or its moving Parts
of the refrigerant by an absorbent medium takes
at least) are enclosed in a Shell rendered gastight by place, the heat emitted in the process being rejected
welding, brazing or other means such that dismantling to the environment.
is not normally possible after assembly. lt does not
include moving Parts outside the Shell.
3.7.5 condenser: Heat exchanger in which the
vaporized refrigerant, after leaving the boiler, is
3.6.3 hermetically sealed compressor refrigerat- liquefied by rejecting heat to an external cooling me-
ing System: Complete System, essentially comprising
dium.
a hermetically sealed motor-driven compressor, a
condenser, a pressure-reducing device, an evaporator,
3.7.6 evaporator: Heat exchanger in which the liq-
and all other Parts containing refrigerant permanently
uid refrigerant, after a drop in its partial pressure, is
interconnected by the manufacturer by welding, braz-
vaporized by absorbing heat from the medium to be
ing or other means.
refrigerated.
3.6.4 refrigerant compressor: Mechanically oper-
ated component which withdraws refrigerant vapour
4 Classification
from the evaporator and discharges it at a higher
pressure to the condenser.
With respect to the ability of appliances to operate in
extreme ambient temperatures, this International
3.6.5 expansion device: Device in which the
Standard relates to the four climate classes given in
pressure of the refrigerant is reduced from that of the
table 1.
condensed liquid to that of the evaporator.
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SIST EN ISO 7371:2000
0 ISO
ISO 7371:1995(E)
No running water shall appear externally when the
ref rigerator is subjected to the water vapour
Table 1 - Climate classes
Values in degrees Celsius
condensation test specified in clause 14.
Range of ambient
When the door or lid is closed, there shall be no ab-
temperatures in which
normal ingress of air into the interior.
the appliances are
intended to be used,
A Strip of Paper shall not slide freely w door or lid
hen
Class Symbol
and for which the
Seals are subjected to the airtightness test specified
required storage
in clause 9.
temperatures shall be
fulfilled (see 6.2.1)
5.4 Doors, lids and fittings
Extended
SN + 10 to +32
temperate
Hinges and handles shall be strong and resistant to
Temperate N + 16 to +32
corrosion.
Subtropical ST + 18 to +38
Tropical T + 18 to +43 External doors and lids of fresh food storage
compartments and cellar compartments shall with-
stand 100 000 openings and closings without deteri-
oration which may be prejudicial to the airtightness
5 Materials, design and manufacture
of the refrigerator when subjected to the durability
test of clause 11.
5.1 General
In the case of refrigerators with a Iow-temperature
Refrigerators shall be constructed in such a manner
compartment having a separate external access door
as to ensure adequate Performance and durability in
or lid, the hinges and handles of the door or lid of that
use. Their Performance in use is checked by applying
compartment shall withstand 10 000 openings and
a series of relevant tests.
closings.
This clause defines some characteristics which are
The fastening System shall be such as to enable the
not tested but to which the attention of the manu-
door or lid to be easily closed and opened. lt shall be
facturer is drawn.
efficient and capable of maintaining its proper func-
tion.
5.2 Materials and finishes
For refrigerators having any compartment or section
Materials used inside refrigerators shall not transmit with a volume equal to or greater than 60 1, it shall be
odours or taste to food. When testing in accordance possible to open the door or lid of that compartment
with clause 18, the mean value of the individual re- from the inside with a forte not exceeding 70 N when
sults during each evaluation for odour and taste shall subjected to the test specified in clause IO. The vol-
ume of any compartment or section shall be deter-
not exceed mark 1.
mined when all shelves, partitions and other internal
Materials used inside refrigerators shall not con-
components removable without the aid of a tool have
taminate food placed in contact with them nor trans-
been removed. However, if the door or lid is provided
mit poisonous substances to food. They shall be
with a mechanical latch which tan be locked by a re-
resistant to the action of moisture and food acids.
movable key, and the door or lid cannot be closed
with the key turned to the locked Position, this re-
All surface finishes shall, for the purpose intended, be
quirement applies only when the latch is unlocked,
resistant to impact, sufficiently hard, colour-fast,
provided that the refrigerator is accompanied by an
smooth, easily washable, and resistant to darnage by
instruction stating that the key shall be kept out of the
moisture and by food acids.
resch of children and not kept in the vicinity of the
ref rigerator.
5.3 Thermal insulation and airtightness
The thermal insulation of refrigerators should be effi-
5.5 Shelves and Containers
cient and permanently maintained. In particular, the
insulating material shall not be subject to shrinkage Shelves, Containers and similar components shall
have adequate mechanical strength. Those used for
and shall not allow, under normal working conditions,
an excessive accumulation of moisture. storing food shall withstand the loading tes
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