oSIST prEN 12693:2023

Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors

This European Standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors.
It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function.
This standard is not applicable to:
-   compressors used in household appliance for which EN 60335 2 34 applies;
-   compressors using water or air as refrigerant.
This European Standard does not deal with requirements for vibration and noise.
NOTE 1   Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639.
NOTE 2   Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators should comply to EN 14276 1 or EN 13445 6 (cast iron) or EN 13445 8 (aluminium) or showing compliance to the relevant European requirements. This applies also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this standard.
NOTE 3   For further guidance see EN 13463-1.
This European Standard deals with all significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This European Standard specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary.
The requirements in this standard take account of the intended use, as defined in EN ISO 12100:2010, 3.12.
This standard relates to the compressor itself which is to be incorporated in a refrigerating system.
This standard is not applicable to compressors as defined in the scope which are manufactured before the date of publication as EN.

Kälteanlagen und Wärmepumpen - Sicherheitstechnische und umweltrelevante Anforderungen - Verdrängerverdichter für Kältemittel

Dieses Dokument gilt für Verdrängerverdichter für Kältemittel nach der Definition in 3.1, die für ortsfeste und ortsveränderliche Kälteanlagen und Wärmepumpen verwendet und im Folgenden als Verdichter bezeichnet werden.
Es gilt für Verdichter, die in gewerblichen und industriellen Anlagen eingesetzt werden und zu deren Energieversorgung Integralmotoren mit bis zu 1 000 V Wechselstrom oder 1 500 V Gleichstrom verwendet werden.
Es gilt für Verdichter mit offenem Antrieb sowie für halbhermetische und hermetische Motorverdichter mit positiver Verdrängungsfunktion.
Dieses Dokument ist nicht anwendbar auf:
—   Verdichter, die für Geräte für den Hausgebrauch vorgesehen sind, für die EN 60335 2 34 gilt;
—   Verdichter, bei denen Wasser oder Luft als Kältemittel dient;
—   Verdichter für die Fahrzeugklimatisierung, die unter eine bestimmte Produktnorm fallen, z. B. ISO 13043.
Dieses Dokument enthält keine Anforderungen im Hinblick auf Geräuschemission und Schwingungen.
ANMERKUNG 1   Verdichter für die Fahrzeugklimatisierung können z. B. nach SAE J 639 entwickelt werden.
ANMERKUNG 2   Die Geräuschemission ist von der Gesamtanlage des eingebauten Verdichters und den entsprechenden Betriebsbedingungen abhängig.
Bei Verdichtern mit halbhermetischem oder offenem Antrieb, die bewegliche Teile enthalten und bei denen die äußere Hülle unter Berücksichtigung bewährter und sicherer industrieller Verfahrensweisen vor allem im Hinblick auf die Aufnahme mechanischer Lasten, den Widerstand gegen thermische Beanspruchungen (zur Begrenzung der möglichen Verformung durch Temperatureinwirkung) und auf Steifigkeit der Konstruktion (äußere mechanische Lasten und Gewicht der Ausrüstung) ausgelegt ist, wird davon ausgegangen, dass der Druck keinen wesentlichen Faktor für die Auslegung darstellt.
Anbauteile mit anderen Funktionen, wie z. B. Ölabscheider, Ölkühler und Ausgleichsbehälter, entsprechen EN 14276 1 oder EN 13445 6 (Gusseisen) bzw. EN 13445 8 (Aluminium) entsprechen, oder es ist nachgewiesen, dass sie die einschlägigen europäischen Anforderungen erfüllen. Dies gilt auch für die Gehäuse von hermetischen Verdichtern, deren Verbindungen entweder geschweißt oder auf andere Art dauerhaft ausgeführt sind.
Dieses Dokument enthält keine Anforderungen an Verdichter für den Einsatz in explosionsgefährdeten Atmosphären.
ANMERKUNG 3   Weitere Hinweise hierzu sind EN 13463 1 zu entnehmen.
Dieses Dokument behandelt signifikante Gefährdungen sowie Gefährdungssituationen und  ereignisse, die beim bestimmungsgemäßen Einsatz von Verdichtern sowie beim falschen Einsatz auftreten können, soweit dieser für den Hersteller mit vertretbarem Aufwand vorhersehbar ist (siehe Abschnitt 4).
Dieses Dokument legt sicherheitstechnische Anforderungen für die Auslegung, Konstruktion und Herstellung sowie für die Prüfung, Dokumentation und Kennzeichnung von Verdichtern fest, die gegebenenfalls auch für ihre fest eingebauten Zubehörteile, z. B. das Absperrventil, gelten.
Die Anforderungen dieses Dokuments berücksichtigen die bestimmungsgemäße Verwendung nach der Definition in EN ISO 12100:2010, 3.12.
Dieses Dokument gilt für den in eine Kälteanlage einzubauenden Verdichter selbst.
Dieses Dokument ist nicht auf Verdichter anwendbar, die den Angaben in diesem Anwendungsbereich entsprechen, aber vor der Veröffentlichung dieses Dokuments hergestellt wurden.

Systèmes de réfrigération et pompes à chaleur - Exigences de sécurité et d'environnement - Compresseurs volumétriques pour fluides frigorigènes

Hladilni sistemi in toplotne črpalke - Varnostnotehnične in okoljevarstvene zahteve - Kompresorji za hladilne tekočine z iztiskavanjem

General Information

• Status: Not Published
• Public Enquiry End Date: 23-May-2023
• ICS: 23.140 - Compressors and pneumatic machines
• ICS: 27.080 - Heat pumps
• ICS: 27.200 - Refrigerating technology
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 09-Mar-2023
• Due Date: 27-Jul-2023
• Completion Date: 24-May-2023
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: prEN 12693 - Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors

Relations

• Revises: SIST EN 12693:2008 - Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 12693:2023
01-maj-2023
Hladilni sistemi in toplotne črpalke - Varnostnotehnične in okoljevarstvene
zahteve - Kompresorji za hladilne tekočine z iztiskavanjem
Refrigerating systems and heat pumps - Safety and environmental requirements -
Positive displacement refrigerant compressors
Kälteanlagen und Wärmepumpen - Sicherheitstechnische und umweltrelevante
Anforderungen - Verdrängerverdichter für Kältemittel
Systèmes de réfrigération et pompes à chaleur - Exigences de sécurité et
d'environnement - Compresseurs volumétriques pour fluides frigorigènes
Ta slovenski standard je istoveten z: prEN 12693
ICS:
23.140 Kompresorji in pnevmatični Compressors and pneumatic
stroji machines
27.080 Toplotne črpalke Heat pumps
27.200 Hladilna tehnologija Refrigerating technology
oSIST prEN 12693:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12693:2023

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oSIST prEN 12693:2023


DRAFT
EUROPEAN STANDARD
prEN 12693
NORME EUROPÉENNE

EUROPÄISCHE NORM

March 2023
ICS Will supersede EN 12693:2008
English Version

Refrigerating systems and heat pumps - Safety and
environmental requirements - Positive displacement
refrigerant compressors
Systèmes de réfrigération et pompes à chaleur - Kälteanlagen und Wärmepumpen -
Exigences de sécurité et d'environnement - Sicherheitstechnische und umweltrelevante
Compresseurs volumétriques pour fluides frigorigènes Anforderungen - Verdrängerverdichter für Kältemittel
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 182.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12693:2023 E
worldwide for CEN national Members.

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oSIST prEN 12693:2023
prEN 12693:2023 (E)
Contents
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and symbols . 10
3.1 Terms and definitions . 10
3.2 Symbols . 12
4 List of significant hazards . 15
5 Safety requirements and/or protective measures . 17
5.1 General . 17
5.2 Protection of moving parts . 17
5.3 Safety to prevent loss of stability . 17
5.4 Safety during handling . 17
5.5 Safety to prevent rupture or bursting . 17
5.5.1 General . 17
5.5.2 Pressure requirements . 18
5.5.3 Design and Materials . 18
5.5.4 Sight glasses . 19
5.5.5 Application of pressure relief devices . 19
5.6 Electrical safety . 19
5.6.1 General . 19
5.6.2 Classification . 19
5.6.3 Determination of current ratings . 20
5.6.4 Protection against access to live parts . 20
5.6.5 Connecting devices . 21
5.6.6 Provisions for earthing . 21
5.6.7 Internal wiring . 21
5.6.8 High potential test. 21
5.6.9 Insulating materials . 21
5.6.10 Motor compressors protection devices . 21
5.7 Measures to reduce emissions of substances . 21
6 Verification of safety requirements and/or protective measures . 22
6.1 General . 22
6.2 Type test . 22
6.2.1 General . 22
6.2.2 Strength test . 22
6.2.3 Pressure relief device . 23
6.2.4 Verification of electrical safety . 23
6.2.5 Lifting points . 24
6.3 Individual test . 24
6.3.1 General . 24
6.3.2 Strength test . 24
6.3.3 Test for tightness . 25
6.3.4 Verification of electrical safety . 25
7 Marking, graphical symbols, written warnings. 25
7.1 General . 25
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prEN 12693:2023 (E)
7.2 Marking . 26
7.3 Graphical symbols, written warnings and information . 27
7.3.1 Lifting points . 27
7.3.2 Pressurizing the housing . 27
7.3.3 Lubricant charge . 27
8 Appropriate manufacturing procedures . 27
9 Documentation and information for the user . 28
9.1 General . 28
9.2 Instruction handbook . 28
Annex A (normative) Procedure for the design of a refrigerant compressor by calculation . 29
A.1 Calculation method . 29
A.1.1 General . 29
A.1.2 Strength values for the design calculation . 29
A.1.3 Documentation . 29
A.2 Design stress to be used for the calculation . 30
A.2.1 Design stress for main pressure bearing parts . 30
A.2.2 Design calculation of screws, fasteners, nuts and bolts . 32
Annex B (normative) Experimental design method for refrigerant compressors . 33
B.1 Experimental design method . 33
B.1.1 General . 33
B.1.2 Choice and verification of material properties . 33
B.1.3 Procedure for the experimental design method . 33
B.1.4 Testing at maximum allowable design test pressure P . 33
F
B.1.5 Testing at minimum burst test pressure P . 34
Test
B.1.6 Documentation . 34
B.2 Determination of maximum allowable design test pressure PF . 34
B.3 Determination of the minimum burst test pressure P . 35
Test
B.4 Correction for the actual wall thickness . 35
Annex C (normative) Determination of the allowable pressure at the maximum operating
temperature . 37
C.1 Relation of the allowable pressure and higher temperatures . 37
C.1.1 General . 37
C.1.2 Documentation . 37
C.2 Determination of the maximum allowable pressure at higher temperatures . 37
Annex D (normative) Determination of the allowable pressure at minimum operating
temperature — Requirements to avoid brittle fracture . 38
D.1 Relation of the allowable pressure and lower temperatures . 38
D.1.1 General . 38
D.1.2 Requirements of materials and proof of material properties . 38
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prEN 12693:2023 (E)
D.1.3 Documentation . 38
D.2 Determination of the maximum allowable pressure at the minimum operating
temperature . 39
D.3 Determination of the maximum allowable pressure at the minimum operating
temperature on the basis of an empirical method (t -Method) . 39
min
D.3.1 General . 39
, t and t . 39
D.3.2 Determining tmin 100 min 75 min 25
D.3.3 Welded constructions . 40
D.3.4 Determination of the safety factor . 40
D.3.5 Material test and documentation . 40
D.4 Determination of the minimum operating temperature TS based on reference
min
thickness e . 40
B
D.4.1 General . 40
D.4.2 Temperature adjustment . 41
D.4.3 Determining design reference temperature T . 41
R
D.5 Determination of screws, fasteners, nuts and bolts below – 10 °C . 48
Annex E (informative) Compilation of material characteristics of often used materials . 49
Annex F (informative) Basic design criteria for refrigerant compressors . 74
F.1 General . 74
F.2 Compressor capability against technical performance . 74
F.2.1 Design, dimensioning and manufacturing rules . 74
F.2.2 Choice of material . 74
F.3 Compressor capability against user requirements . 74
F.3.1 Design, dimensioning and manufacturing rules . 74
F.3.2 Choice of material . 75
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU-Directive 2006/42/EC aimed to be covered . 76
Bibliography . 78


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oSIST prEN 12693:2023
prEN 12693:2023 (E)
European foreword
This document (prEN 12693:2023) has been prepared by Technical Committee CEN/TC 182
“Refrigerating systems, safety and environmental requirements”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12693:2008.
The main changes with respect to the previous edition are listed below:
a) normative referenced updated
b) thermal hazards added to Clause 4 Table 2
c) requirements on vibration added to 5.1
d) requirements for spacings in 5.6.4 Table 3 adjusted
e) NOTE in 6.2.3 transferred to normative text
f) requirements for testing in 6.3.4 modified
g) editorially revised
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
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oSIST prEN 12693:2023
prEN 12693:2023 (E)
Introduction
This standard is a type C standard as stated in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this standard.
When provisions of this type C standard are different from those which are stated in type A or B
standards, the provisions of this type C standard take precedence over the provisions of the other
standards, for machines that have been designed and built according to the provisions of this type C
standard.
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oSIST prEN 12693:2023
prEN 12693:2023 (E)
1 Scope
This document applies to positive displacement refrigerant compressors for stationary and mobile
refrigerating systems and heat pumps defined in 3.1, hereafter called compressors.
It applies for compressors used in commercial and industrial appliances and with electrical energy supply
including integral motors, up to 1 000 VAC and 1 500 VDC.
It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive
compression function.
This document is not applicable to:
— compressors used in household appliance for which EN 60335-2-34 applies;
— compressors using water or air as refrigerant;
— compressors in vehicle air conditioning systems covered by a specific product standard, e.g.
ISO 13043
This document does not deal with requirements for emission of noise and vibration .
NOTE 1 Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J
639.
NOTE 2 Noise emission depends on the complete installation of the built-in compressors and the corresponding
operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external
envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due
to temperature), stiffness of the structure (external mechanical loads and weight of the equipment),
taking into account established safe industrial practice, it is considered that pressure is not a significant
design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators comply to
EN 14276-1 or EN 13445-6 (cast iron) or EN 13445-8 (aluminium) or show compliance to the relevant
European requirements. This applies also to shells for hermetic compressors either welded or with any
kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this document.
NOTE 3 For further guidance see EN 13463-1.
This document deals with significant hazards, hazardous situations and events relevant to compressors,
when they are used as intended and under conditions for misuse which are reasonably foreseeable by
the manufacturer (see Clause 4).
This document specifies safety requirements for the design, construction, manufacture and testing,
documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if
necessary.
The requirements in this document take account of the intended use, as defined in EN ISO 12100:2010,
3.12.
This document relates to the compressor itself which is to be incorporated in a refrigerating system.
This document is not applicable to compressors as defined in the scope which are manufactured before
the date of publication.
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oSIST prEN 12693:2023
prEN 12693:2023 (E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 378-1:2016+A1:2020, Refrigerating systems and heat pumps - Safety and environmental requirements
- Part 1: Basic requirements, definitions, classification and selection criteria
EN 378-2:2016, Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2:
Design, construction, testing, marking and documentation
EN 1515-1:1999, Flanges and their joints - Bolting - Part 1: Selection of bolting
EN 1515-2:2001, Flanges and their joints - Bolting - Part 2: Classification of bolt materials for steel flanges,
PN designated
EN 1515-3:2005, Flanges and their joints - Bolting - Part 3: Classification of bolt materials for steel flanges,
class designated
EN 1515-4:2021, Flanges and their joints - Bolting - Part 4: Selection of bolting for equipment subject to the
Pressure Equipment Directive 2014/68/EU
1
EN 1779:1999 , Non-destructive testing - Leak testing - Criteria for method and technique selection
EN 10204:2004, Metallic products - Types of inspection documents
EN 13136:2013+A1:2018, Refrigerating systems and heat pumps - Pressure relief devices and their
associated piping - Methods for calculation
EN 20898 (series), Mechanical properties of fasteners
2
EN 60034-1:2010, Rotating electrical machines - Part 1: Rating and performance (IEC 60034-1:2010,
modified)
EN 60204-1:2018, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
(IEC 60204-1:2016, modified)
3
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529 1989 + A1:1999 +
A2:2013 + Cor.1:2019)
EN 60999-1:2000, Connecting devices - Electrical copper conductors - Safety requirements for screw-type
and screwless-type clamping units - Part 1: General requirements and particular requirements for clamping
2 2
units for conductors from 0,2 mm up to 35 mm (included) (IEC 60999-1:1999)

1
Document impacted by A1:2003.
2
Document impacted by Corrigendum October 2010.
3
Document impacted by A1:2000, A2:2013 and AC:2019-02.
8

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oSIST prEN 12693:2023
prEN 12693:2023 (E)
EN 60999-2:2003, Connecting devices - Electrical copper conductors - Safety requirements for screw-type
and screwless-type clamping units - Part 2: Particular requirements for clamping units for conductors above
2 2
35 mm up to 300 mm (included) (IEC 60999-2:2003)
4
EN 61010-1:2010, Safety requirements for electrical equipment for measurement, control and laboratory
use — Part 1: General requirements (IEC 61010-1:2010 + COR:2011 + A1:2016, modified +
A1:2016/COR1:2019)
EN ISO 898-1:2013, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts,
screws and studs with specified property classes - Coarse thread and fine pitch thread (ISO 898-1:2013)
EN ISO 898-2:2022, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts
with specified property classes – Coarse thread and fine pitch thread (ISO 898-2:2022)
5
EN ISO 898-3:2018, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 3: Flat
washers with specified property classes (ISO 898-3:2018 + Amd 1:2020)
EN ISO 898-5:2012, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set
screws and similar threaded fasteners with specified hardness classes - Coarse thread and fine pitch thread
(ISO 898-5:2012)
EN ISO 4126 (series), Safety devices for protection against excessive pressure (ISO 4126 series)
EN ISO 9606-1:2017, Qualification testing of welders - Fusion welding - Part 1: Steels (ISO 9606-1:2012
including Cor 1:2012 and Cor 2:2013)
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction
(ISO 12100:2010)
EN ISO 13732-1:2008, Ergonomics of the thermal environment - Methods for the assessment of human
responses to contact with surfaces - Part 1: Hot surfaces (ISO 13732-1:2006)
EN ISO 13857:2019, Safety of machinery - Safety distances to prevent hazard zones being reached by upper
and lower limbs (ISO 13857:2019)
EN ISO 14120:2015, Safety of machinery - Guards - General requirements for the design and construction
of f
...