http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/RSS.ashxRA PagesTue, 23 Oct 2007 15:27:48 +0200http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=1http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=1Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area ATEX 949EC Directive ATmosphres EXplosives Application Guide REFRIGERATION AIR CONDITIONING DIVISION2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=2http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=2Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 2 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Contents Page Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Application area for ATEX and Harmonised Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Scope of ATEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Nonelectrically equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Intrinsic safety protection method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Other requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 General zone classification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Zone classification principle of a refrigeration system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Guideline zone classification of refrigeration systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Zone classification, general. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Zone classification for refrigeration systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Equipment group and zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Requirements for refrigeration components in countries outside Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 USA Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Other countries China, Japan, Brazil, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Danfoss solenoid coils, pressure controls and gas detectors suitable for use in installations located in potentially explosive atmospheres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Manufacturers declaration for potentially explosive atmosphere. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Declaration of conformity in accordance with ATEX 949 EC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Annex I Gas Groups and Temperature Classes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=3http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=3Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 3 Introduction Industrial refrigeration components are mainly used in ammonia refrigeration systems, but some components are used in related applications, where locations are classified as hazardous areas. Danfoss has over a number of years supplied components to this business area, particularly in Europe. However, due to new, more restrictive regulations, refrigeration components and refrigeration systems have to fulfil requirements for potentially explosive atmospheres, as specified in the ATEX directive. PRS systems Process Refrigeration Systems are typically classified as hazardous areas, where the ATEX requirements also have to be fulfilled. The ATEX 949EC directive is one of the new European directives. The ATEX directive specifies the requirements for equipment intended for use in potentially explosive atmospheres. ATEX is derived from the French term ATmosphres EXplosives. The ATEX directive replaces the previous EC directive 76117EC which only included electrical equipment, whereas ATEX includes both electrical and nonelectrical equipment. The ATEX directive became mandatory from 1st July 2003 in all EU and EFTA member states. Fig. 1 EU and EFTA Member states ATEX is just one of a number of EC directives refrigeration equipment manufacturers have to comply with, before their equipment can be placed on the market in the member states. Other relevant directives for refrigeration equipment are PEDPressure Equipment Directive, EMC Electro Magnetic Compatibility, MD Machinery Directive and LVDLow Voltage Directive. The Directives are law in the member states, and only equipment fulfiling the requirements must be CE marked and placed on the market. Fig. 2 EC directives ATEX Potentially explosive atmosphere PED Pressure Equipment Directive EMC Electro Magnetic Compatibility LVD Low Voltage Directive MD Machinery Directive Application area for ATEX and Harmonised Standards The ATEX as well as the harmonised technical standards state requirements for Design of equipment manufacture of equipment testing of equipment Compliance with the ATEX directive ensures free movement of goods equipment between all EUmember states and it also ensures that the equipment can be put into service, if there are no particular requirements for the country of destination. Important The zone classification for the country of destination of a final refrigeration system has to be approved by local authorities. If local authorities require higher classification than the actual equipment is approved for, the system must not be used. Installation and start up. The ATEX directive does not state requirements for Operation When the equipment is operating at the endusers facility, national laws become effective. Degree of protection Protection Category Very High Two independent protection measures or safe if two errors occur independently Category 1 High Safe in normal operation and in anticipated case of commonly occurring errors Category 2 Normal Safe in normal operation Category 3 Fig. 3 ATEX categories degree of protection2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=4http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=4Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 4 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Included in the ATEX Directive Mining and nonmining equipment. Explosive atmospheres caused by gas and dust. Electrical and nonelectrical equipment. Equipment machines, devices, builtin instruments or mobile devices. Security systems equipment which can stop limit explosions. Components parts without any independent function. Security control and regulation devices intended for use outside explosive areas but which secure the equipment in the hazardous areas . Scope of ATEXNot included in the ATEX Directive Medical equipment for hospital environments. Equipment and protection systems for use in connection with explosive or unstable chemicals. Household appliances and equipment intended for use in noncommercial surroundings. Personal Protection Equipment directive 89686EC. Tankers and mobile offshore units. Means of transport except vehicles. Equipment for mining industries and explosive atmospheres caused by dust are not covered in this application guide. Nonmining equipment for potential explosive atmospheres classified as Equipment Group II. Category 1 Category 2 Category 3 The requirements in the categories depend on the type of equipment. Simple mechanical components like valves, filters, check valves, etc. do normally not contain any potential ignition source, and are therefore not covered by the ATEXdirective. Manufacturers of this kind of equipment, must nevertheless carry out and keep a Non electrical valve without potential ignition source Non electrical valve with potential ignition source Electrical operated valve Zone Zone Zone Stop valves Filters Check valves Etc. Not relevant for common industrial refrigeration components Electronic components Solenoid coils Etc. Category 1 Zone 0 Not covered by the scope of ATEX Directive 949CE CEType approval III IV or V CEType approval III IV or V Category 2 Zone 1 Documentation at Notified Body VIII partly CEType approval III IV or VII Category 3 Zone 2 Internal quality control VIII Internal quality control VIII Fig. 4 ATEXrequirements Explosion triangle The explosion triangle fig. 5 shows the principle of explosion. All three elements must be present before an explosion can take place. Removing one of the elements eliminates all risk of explosion. In refrigeration, the consideration regarding the risk of explosion is limited to the outside of the system itself. Within the refrigeration system, there is 100 concentrated refrigerant with no oxygen present, consequently there is no risk of explosion. Fig. 5 The explosion triangle NOTE The letters I, II, . VIII in figure 4, specify the relevant ATEX 949EC directive modules that need to be complied with. risk assessment report, to prove that the equipment do not have an ignition source, and are safe for the purpose. Mechanical components with potential ignition sources e. g. components containing non conductive materials, are covered by the ATEXdirective. These products have to fulfil all requirements in the ATEX directive, and have to be marked with the required marking. Electrically operated components are covered by the ATEXdirective, and have to fulfil all requirements in the ATEX directive, and have to be marked with the required marking. 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=5http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=5Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 5 Nonelectrical equipment The requirements for nonelectrically equipment in hazardous areas are new. The risk analysis of nonelectrical refrigeration equipment valves and similar components has to focus on ignition sources. The requirements for this kind of equipment are specified in EN 11271 Explosive atmospheres. Explosion prevention and protection, Part 1. Basic concepts and methodology. EN 134631 Nonelectrical equipment for potentially explosive atmospheres, Part 1. Basic methods and requirements. EN 134636 Nonelectrical equipment for potentially explosive atmospheres, Part 6. Protection by control of ignition. Examples Nonconductive materials e. g. plastic are not acceptable. Nonconductive material can create static electricity. Category 2 Magnesium content must be less than 7. 5. Hot surfaces. All possible sources of ignition have to be analysed and avoided. Simple components like stop valves, filters etc. without the above mentioned ignition sources, are normally not covered within the scope of the ATEX directive. Electrical equipment The requirements for electrical equipment in hazardous areas are not new. The requirements specified in the ATEX directive are almost identical with the previous legislation and are much more demanding than the requirements for nonelectrical equipment. Intrinsic safety protection method Intrinsic safety is an explosion protection technique ensuring there is insufficient energy to cause the ignition of a surrounding explosive atmosphere by an electrical spark or the heating of components or circuitry. EXzone Non EXzone Encapsulation Encapsulation is an explosion protection technique where the electrical components are fully encapsulated. This method is often used for components withhigher power consumption e. g. solenoid coils. However, power consumption is also a limiting factor with this method due to the risk of high surface temperature of the component. Fig. 6 Intrinsic safety protection method Note Solenoid valves with these coils can have relatively low MOPD. A number of different methods can be used to protect electrical equipment. Detailed below are two commonly used methods of electrical protection. Further methods are described in Annex I. Due to power consumption restrictions, this method is only suitable for equipment with low power consumption and is commonly used for measuring devices. 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=6http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=6Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 6 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Marking Components covered within the scope of the ATEX directive have to be CEmarked, and marked with the specific sign. The marking depends on the actual type of equipment. 9999Specific marking Additional marking II2GEEXd IICT4 CEmarking registration number of Notified Body Equipment group I Mining II Nonmining Equipment Category 1 zone 0 2 zone 1 3 zone 2 Nature of atmosphere G Gas D Dust Protection type o for oil immersion p for pressurisation q for powder filling d for flameproof enclosure e for increased safety ia for intrinsic safety ib for intrinsic safety m for encapsulation Gas Group IIA IIB IIC Temperature class T1 to T6 Fig. 7 marking Documentation The required documentation depends on whether the component has an ignition source or not. All components covered within the scope of the ATEX directive must be supplied with a CE declaration of conformity. Nonelectrical equipment without any ignition source, is not covered within the scope of the ATEX directive, but has to be supplied with the manufacturers declaration. The manufacturers declaration must declare that the equipment is suitable for the purpose, and that it does not have any ignition sources. The manufacturer also has the obligation to document a safety risk assessment for the equipment. Use in Explosive atmosphere No ATEX requirements Manufacturers risk assessment Potential ignition source ATEX 949 EC applies Manufactures declaration for potentially explosive atmosphere Declaration of conformity in accordance with ATEX 949 EC yesyes Use in Explosiveatmosphere Manufacturers riskassessment Potentialignition source ATEX 949 ECapplies No ATEX requirements Manufactures declaration for potentially explosiveatmosphere Declaration ofconformity inaccordance with ATEX 949 EC no yes no Other requirements The ATEX directive does not differentiate between different refrigerant types and for manufacturers of refrigerant valves, this is an important issue. Refrigeration valves are normally designed for use with specific refrigerant types or groups of refrigerants. In PRS systems flammable refrigerants like propylene are often used. When propylene is compared to e. g. ammonia it has many different material compatibility issues. It is therefore very important that material compatibility is also evaluated. The suitability of Orings with the different refrigerant types depends on the compatibility judgement, and the actual type of sealing. An Oring with a judgement fair, is normally suitable for all internal sealings, but not necessarily for external sealings. It is important to make sure that specific products are approved for the actual refrigerant. Refrigerant flammable Neoprene CR cloroprene Used for standard refrigeration valves Nitrile NBRFlourcarbon FPM Viton 1 Propanefairsatisfactorysatisfactory Butanesatisfactorysatisfactorysatisfactory Isobutanefairsatisfactorysatisfactory Propyleneunsatisfactorydoubtfulsatisfactory Ethanefairsatisfactorysatisfactory Fig. 8 Documentation Fig. 9 Material compatibility sealing material Orings 1 There are no FPM Orings available for low temperature below 40C See fig. 15 See fig. 162007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=7http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=7Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 7 General zone classification Components for use in hazardous areas are classified from Category 1 to Category 3. Hazardous areas are classified in Zones Zone 0 is the most restrictive and Zones 1 and 2 are less restrictive. The zone classification of final equipment is very important. It is also important to acknowledge that local authorities have to approve the specified zone classification of the final equipment. There is no standard available, where an exact definition of zones are made. Valves and similar equipment in refrigeration systems located in hazardous areas classified for zone 2, 1 or 0, have to fulfil the requirements in ATEX directive Directive 949EC. Guideline zone classification of refrigeration systems Locations for standard refrigeration systems with CFC, HCFC, HFC, Ammonia are normally not classified as hazardous areas. Requirements for ammonia are specifically mentioned in EN 3782 for information also see pr EN 3782. Refrigeration systems located in hazardous areas e. g. in petro chemical plants have to fulfil requirements for Potentially explosive atmospheres irrespective of the refrigerant. Industrial refrigeration systems with HC refrigerants e. g. Propane, Butane, Propylene, etc are normally classified as hazardous areas. Certain local authorities interpret the requirements so that equipment located in a machinery room for a HC refrigeration system is classified as Zone 2 if only one compressor is employed. If two compressors are present, and one of these is under service e. g. changing oil, then it becomes Zone 1. Potentially explosive atmospheres do not occur inside a refrigeration system because no oxygen is present. Refrigeration systems designed and maintained according to EN 378 fulfil this requirement. Potentially explosive atmospheres can occur outside a refrigeration system in the location of a refrigeration system. Refrigeration systems in Potentially explosive atmospheres can contain flammable or non flammable refrigerants. Zone classification, general Zone 0 Zone 2 Zone 1 Zone 0 Zone 0 Zone 2 Zone 1 Zone 0 Zone classification for refrigeration systems Refrigeration systems are classified in relevant zones according to the risk for the location for a particular refrigerant system. A particular refrigeration system can be classified in different zones, for different part of the system. Fig. 10 Zoneclassification principle Zone 0Zone 1Zone 2No requirements Lowrisk Highrisk Evaporator Compressor Condenser Fig. 11 Zoneclassification principle for a refrigeration system Equipment group and zones Equipment located in zone specified areas must fulfil the following requirements Category 3 approved equipment can be installed in hazardous areas zone 2 and outside zone categorised areas. Category 2 approved equipment can be installed in hazardous areas zone 1, zone 2 and outside zone categorised areas. Category 1 approved equipment can be installed in hazardous areas zone 2, zone 1, zone 0 and outside zone categorised areas. Zone 0Zone 1Zone 2No requirements Hazards area Catagory 3 Catagory 2 Catagory 1 ATEX Directive Equipment group II Fig. 12 Category relations For refrigerant systems with flammable refrigerants, special consideration should be given to The tightness of the system. The correct equipment is being used e. g. sealing materials must be compatible with the refrigerant. The system is maintained correctly. 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=8http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=8Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 8 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Requirements for refrigeration components in countries outside Europe USA Canada Mechanical components without any electrical equipment generally do not need to be approved. Electrical components have to be approved according to UL, Division 1 or 2. When the electrical equipment is mounted on e. g. a valve, the complete valve assembly has to be approved. Approval cost is generally relatively high for these products, depending of actual division and product type. Other countries China, Japan, Brazil, . . In particular electrical equipment has to be type approved in several countries, and the requirements are different e. g. only available in local language. Definition Degree of protection Protection Europe USA Canada Areas in which a gas oxygen mixture occurs CONTINUOUSLY or for extended periods. Very High Two independent protection measures or safe if two errors occur independently. Zone 0 Division 1 Areas in which a gas oxygen mixture occurs OCCASIONALLY. High Safe in normal operation and in anticipated case of commonly occuring errors. Zone 1 Areas in which a gas oxygen mixture occurs EXCEPTIONALLY and only for short periods. Normal Safe in normal operation. Zone 2Division 2 Fig. 13 Hazardous areas Europe USA2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=9http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=9Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 9 Solenoid coils type BP II 2 G EEx m II T4 The coils are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 2 Zone 1. l Grade of enclosure IP 67. l Supplied with 3 m mouldedin 3core cable. l 16 W dc. NOTE 1 The coil has reduced MOPD MOPD8 bar depending of actual valve type. NOTE 2 The supply must be secured against a too high power consumption in case of a short circuit. Literature No. DKACV. PD. 600. A Category 2 Zone1 Solenoid coils type refrigeration II 3 G EEx n A II T3 The coils are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 3 Zone 2. l Grade of enclosure IP 67. l Supplied with 1 m mouldedin 3core cable or terminal. 1 20 W dc ac NOTE The supply must be secured against a too high power consumption in case of a short circuit. Literature No. RD3JE Category 3 Zone 2 Pressure Control type MP 55E II 3 G EEx n L IIC T6 The differential pressure controls are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 3 Zone 2. l Grade of enclosure IP 20. l Max working pressure PS 17 bar. l ATEX design o Gold contactors. o Stainless steel bellow with restricted movement. o Soldering connection. NOTE Contact loads Must be used with reliable means of limiting the voltage and current to prevent sparks between the contact surfaces. This could be zener diodes or Ex barriers. Literature No. RD5CB Category 3 Zone 2 Pressure Control type KPE II 3 G EEx n L IIC T6 The pressure controls are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 3 Zone 2. l Grade of enclosure IP 30 or IP 40 l Max working pressure KP 1E PS 8 bar. KP 7E PS 32 bar. l ATEX design o Gold contactors. o Stainless steel bellow with restricted movement. o Soldering connection. NOTE Contact loads Must be used with reliable means of limiting the voltage and current to prevent sparks between the contact surfaces. This could be zener diodes or Ex barriers. Literature No. RD5AC Category 3 Zone 2 Danfoss solenoid coils, pressure controls and gas detectors suitable for use in installations located in potentially explosive atmospheres2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=10http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=10Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 10 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Pressure Transmitter Type MBS 4201 II 1 G EEx ia IIC T4 T6 The pressure transmitters are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 1 Zone 0. l Grade of enclosure IP 65 IP67. l Measuring range 0 600 bar. NOTE Must be used in conjunction with safety barriers see DKACT. PD. P20y1. 02. Literature No. DKACT. PD. P20. W Category 1 Zone 0 Gas detector type GD II 2 G EEx d IIB H2 T3 T6 The gas detectors are suitable for use in installations located in potentially explosive atmospheres. l ATEX Category 2 Zone 1. l Grade of enclosure IP 65. NOTE Literature No. RD7HA Category 2 Zone 1 RT pressure and temperature controls II 2 G EEx ia IIC T6 The RT pressure and temperature controls are suitable for use in installations located in potentially explosive atmospheres. l ATEX design l ATEX Category 2 Zone 1 l Grade of enclosure IP 67 l Gold contactors l Stainless steel bellow with restricted movement l Stainless steel frame conductive NOTE Contact loads Must be used with reliable means of limiting the voltage and current to prevent sparks between the contact surfaces. This could be zener diodes or Ex barriers. Literature No. RD5BA Category 2 Zone 1 LED indicationpower supply LED indication opencircuitshortcircuit Accessories for Potentially Explosive Atmospheres l Safety barriers. l I. S Isolator, transmitter supply unit Safety barriers and I. S Isolator. Literature No. DKACT. PD. P20. Y Danfoss solenoid coils, pressure controls and gas detectors suitable for use in installations located in potentially explosive atmospheres continued Fig. 14 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=11http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=11Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 11 Declaration of conformity in accordance with ATEX 949 EC Manufacturers declaration for potentially explosive atmospheres Danfoss Industrial Refrigeration has a quality and environmental management system that is certified in accordance with international standards ISO 9001 and ISO 14001. Our products comply with the requirements of the Pressure Equipment Directive 9723EC and are approved by TV Nord 0045 Manufacturers Declaration to the European Directive ATEX 949CE Group D Component with special sealing material for HCrefrigerants Propane, Butane, Isobutane and Propylene and can be mounted with electrically pilots equipment and have no ignition sources Main Valves control valves ICS 3E Modulating liquid level regulators PMFLE Pilots for ICS Valves CVPHPE Pilots for ICS Valves EVME For the above listed valves a hazard analysis to the directive ATEX 949EC has been carried out with the following result x This nonelectrical equipment holds no potential ignition source at normal usage. x The listed valves are not covered by the scope of ATEX Directive 949EC. x The valves my be used in the following EX range Category 2 Zone 1 and Category 3 Zone 2 IMPORTANT The abovementioned valves are not identically to standard refrigeration valves. The valves are equipped with special orings compatible with the specified refrigerants. The valves have a reduced temperature range. Note 1 Valves used for the above condition has to installed and maintained according to the requirements in EN 378. Note 2 Electronic Mechanical actuators pilots used to operate the abovementioned equipment, has to undergo a separate conformity assessment. Reference to standards and directives EN 134531 EN 134535 EN 378 ATEX 949EC 14042005 Danfoss Industrial Refrigeration AS Fig. 15 Fig. 162007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=12http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=12Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 12 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Gas Groups and Temperature Classes Gas Group Gas Ignition temperature Temperature Class CT1T2T3T4T5T6 II A Acetone Acetic acid Ammonia Ethane Methylene chloride Methane CH4 Carbon monoxide Propane 540 485 630 515 556 595 605 470 n Butane n Butyl 365 370 Hydrogen sulfide n Hexane 270 240 Acetaldehyde Ethyl ether 140 170 Ethyl nitrite90 B Ethylene Ethyl oxide 425 429 440 C Acetylene C2H2 Carbon bisulphide CS2 Hydrogen H2 305 102 560 Max. allowed equipment surface temp. C45030020013510085 Protection methods Technique Protection type Ex Symbol EN Standard Typical application Separation Overpressurep EN50 016Control rooms Lowered in oilo EN50 015Analysis Powder fillingq EN50 017Instumentation Encapsulaitonm EN50 028Instrumentation solenoid coils e. g. Refined mechanical design Increased safetye EN50 019Engines, lighting, junction boxes Energy limitation Intrinsic safetyia ib EN50 020 Instrumentation e. g. MBS Pressure Transmitters Encapsulation Explosion flameproofd EN50 018Engines pumps Special Specials General requirements for all methods EN50 014 Annex I The ignition temperature of a fluid is the lowest temperature at which the fluid vapour will be ignited. This temperature defines the Temperature Class. The Temperature Class, defines the highest allowable surface temperature . E. g. Equipment used with Butane must have a max. allowable surface temperature of 300C Temperature Class T2, this means that equipment with Temperature Class T2 to T6 can be used. 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=13http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=13Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 13 Annex IIClassification of Danfoss Industrial Refrigeration products Group Product groups ATEX requirements Nonflammable refrigerants Ammonia, CFC, HCFC, HFC, CO2 Flammable refrigerants Propane, Butane, Isobutane, Propylene, ethane Comments Hazardous area Outside catagory zone Zone 2 Zone 1 Zone 0 Outside catagory zone Zone 2 Zone 1 Zone 0 ATEX Equipment group II Component type Category 3 Category 2 Category 1 Category 3 Category 2 Category 1 A Components which can be used with all refrigerantsand cannot be mounted with any electrically pilots equipmentand have no ignition sources Stop Valves SVAHS, X1XXXXXX Filters FIAXXXXXX Check Valves NRVSXXXXXX Check Valves NRVAXXXXXX B Components which can be used with Ammonia, CO2, CFC, HCFC, HFC refrigerantsand cannot be mounted with any electrically pilots equipmentand have no ignition sources Stop Valves SVASTXXX Regulating Valves REG XXX Stop Check Valves SCAXXX Check Valves CHVXXX Float Valves HFI XXX Float Valves SV XXX Pilots for ICS Valves CVP, CVPP XXX Safety Valves SFAXXX Safety Valves SFVXXX Safety Valves BSVXXX Change Over Valves for Safety Valves DSV XXX Safety Valves POV XXX C Components which can be used with Ammonia, CO2, CFC, HCFC, HFC refrigerantsand can be mounted with electrically pilots equipmentand have no ignition sources Note Only EX approved coils, if any coils are used Main Valves control valves ICS 1 ICS 3XXX Main Valves control valves PM1 PM3 PML PMLXXXX Modulating liquid level regulators PMFH XXX Pilots for ICS Valves EVM XXX Electrically operated expansion valve AKVAXXX Solenoid Valves EVRSXXX Solenoid Valves EVRAXXX D Components with special sealing material for use with HCrefrigerants Probane, Butane, Isobutane and Propyleneand can be mounted with electrically pilots equipmentand have no ignition sources Note Only EX approved coils, if any coils are used Main Valves control valves ICS3EXXX Modulating liquid level regulators PMFHEXXX Pilots for ICS Valves CVPHPEXXX Pilots for ICS Valves CVCEXXX Pilots for ICS Valves EVMEXXX E Components not to be used in hazardous areas Components in this group has an ignition source Motor Valves ICM, ICAD 600900 Motor Valves MRV MEV Level controls38E, AKS 38, AKS 4141U Electronic regulators EKC 2. . , EKC 3. . Standard solenoid coilsall Pilots CVQ, CVPM F Electrical components for use in hazardous areas RTSafety pressure control RTEXXXXXX RTDifferential pressure control RTEXXXXXX RTThermostats RTEXXXXXX KPESafety pressure control KPE Ex II 3 G EEx n L IIC T6XXLiterature No. RD5CB102 MP 55EDifferential pressure control MP 55E Ex II 3 G EEx n L IIC T6XXLiterature No. RD5AC103 MBS Pressure transmitter MBS 42xx Ex II 1 G EEx ia II T4 T6XXXXXXXXLiterature No. DKACT. PD. P20. W1. 02 EX solenoid coils BP Ex II 2 G EEx m II T4XXXXXXLiterature No. DKACV. PD. 600. A4. 03 EX solenoid coils Ex II 3 G EEx n A II T3XXXXLiterature No. RD5AC103 Gas detector GD Ex II 2 G EEx d IIB H2 T3 T6XXXXXXLiterature No. RD5AC1032007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=14http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=14Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 14 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 ICS pilot control Code no. ICS3E20 D5027H1060 ICS3E20 D10027H1061 ICS3E20 D15027H1062 ICS3E20 D20027H1063 ICS3E20 D25027H1064 ICS3E25 D5027H2175 ICS3E25 D10027H2176 ICS3E25 D15027H2177 ICS3E25 D20027H2178 ICS3E25 D25027H2179 ICS3E32 D027H3029 ICS3E40 D027H4038 ICS3E50 D027H5037 ICS3E65 D027H6038 PMFHE High pressure float valve Code no. PMFHE 802027F4038 PMFHE 803027F4039 PMFHE 804027F4040 PMFHE 805027F4041 PMFHE 806027F4042 PMFHE 807027F4043 PMFHE 125027F4044 PMFHE 200027F4045 PMFHE 300027F4046 PMFHE 500027F4047 SV3E Pilot float valve Code no. SV3E 027B0081 CVPHPE Pressure control pilot Code no. CVPHPE4 to 22 bar 027B0083 CVPHPE4 to 28 bar027B0084 CVPHPE0, 66 to 7 bar027B0085 CVCE Pressure control pilot Code no. CVCE0. 45 to 7 bar 027B0086 EVME Solenoid pilot Code no. EVME 032F8029 Valves for HCrefrigerants PMFLE Low pressure float valve Code no. PMFLE 801027F4048 PMFLE 802027F4049 PMFLE 803027F4050 PMFLE 804027F4051 PMFLE 805027F4052 PMFLE 806027F4053 PMFLE 807027F4054 PMFLE 125027F4055 PMFLE 200027F4056 PMFLE 300027F4057 Annex III2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=15http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=15Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 15 Are servo operated valves which belong to the ICV Industrial Control Valve family. Are special valves which can be used with Hydro Carbon refrigerants. Have three pilot pressure connections. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . Temperature range 40120C 40248F. ICS3E valves Max. working pressure 52 bar g 754 psig Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name ICS3E. All dimensions and performance data are identical to the standard ICS Literature no. PD. HS0. A Material specification No. Part Material ENASTMJIS 1Body Low temperature steel G20Mn5QT, EN 102133LCC A352SCPL1 G5151 2Top cover Low temperature steel G20Mn5QT, EN 102133LCC A352SCPL1 G5151 3Function module assembled ACylinder Steel BPiston Steel CValve plate PTFE DSpring Steel ECone Steel FIntermediate plate Steel 4Gasket Fibre, nonasbestos 5Bolts Stainless steel A270, EN 15151Grade B8 A320A270, B 1054 6Plug Steel 7Gasket Aluminium 8Manual operating spindle Steel 9Plug Steel 10Gasket Aluminium Oring Flourocarbon Viton Oring Oring Oring Oring Annex IV2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=16http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=16Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 16 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Are modulating servocontrolled main expansion valves, controlled by pilot float valve type SV3E. Are special valves which can be used with Hydro Carbon refrigerants. Have one pilot pressure connection. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . PMFHE or PMFLE valves Temperature range 40120C 40248F. Max. working pressure 28 bar g 406 psig Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name PMFHE or PMFLE. All dimensions and performance data are identical to the standard PMFH or PMFL Literature no. RD2CB. No. Part Material DINENISOASTM 2Gasket between body and flange Nonmetal Nonasbestos 3Bolts for flange Stainless steel A270A270Type 308 4Flange PM 5 65Steel RSt. 372, 10025Fe360 B, 630Grade C, A 283 6Plug Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 10Valve spindle Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 12Valve seat Teflon PTFE 19Valve body Low temperature cast iron spherical ENGJS40018LT EN1693 20Bottom cover Low temperature cast iron spherical ENGJS40018LT EN1693 23Spring Steel 24Servo piston Cast iron GG25 Grade 250Class 40B 30Cover Low temperature cast iron spherical ENGJS40018LT EN1693 31Trottle cone Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 32Gasket between body and bottom cover Nonmetal Nonasbestos 34Bolts for top and bottom cover Stainless steel A270A270Type 308 41Gasket Nonmetal Nonasbestos 43Spring Steel 53Spindle cap Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 60Setting manual operating spindle Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 73Pilot connection Steel9SMn28 1651 Type 2 R6839 1213 SAE J 403 Oring Flourocarbon Viton Material specification Oring Oring Oring Oring PMFHEPMFLE2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=17http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=17Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 17 Can be used separately as a modulating liquid level regulator in refrigerating, freezing and air conditioning systems for ammonia or fluorinated refrigerants. However, in most cases, the SV3E is used as a float pilot valve for the main expansion valve type PMFHE. Are special valves which can be used with Hydro Carbon refrigerants. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . SV3E valves Temperature range 40120C 40248F. Max. working pressure 28 bar g 406 psig Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name SV3E. All dimensions and performance data are identical to the standard SV Literature no. RD2BB. No. Part Material DIN EN 1Float housing Stainless steel Low temperature, steel X5Cr Ni1810, DIN 17440 P285QH, EN 102224 2Float Stainless steel 3Split pin Steel 4Float arm Stainless steel 5Link Steel 6Pin High density polymer 7Valve housing Steel 8Oring Flourocarbon Viton 9Float orifice High density polymer 10Manual regulation unit. Throttle valve Steel 11Gasket Non asbestos 12Plug Steel 13Oring Flourocarbon Viton 14Pilot connection spare part Steel 15Orifice needle Plastic 16Oring Flourocarbon Viton 17Screw Steel 18Gasket Non asbestos 19Pin Steel 20Cover Low temperature, cast iron spherical ENGJS40018LT EN 1563 21Screw Stainless steel A270 22Gasket Non asbestos 23Label Cardboard 25Screw Steel 26Spring washer Steel 28Sign Aluminium Material specification2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=18http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=18Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 18 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Are constant pressure pilot valves for high pressure applications. Are special valves which can be used with Hydro Carbon refrigerants. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . Temperature range 40120C 40248F. Max. working pressure 28 bar g 406 psig CVPHPE valves Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name CVPHPE. All dimensions and performance data are identical to the standard CVP Literature no. PD. HN0. A. No. Part Material A1Oring Flourocarbon Viton A2Seal Nonasbestos 1Protective cap Steel 3Seal Nonasbestos 4Nut Stainless steel 10Diaphragm Stainless steel 11Thrust pad Stainless steel 12Spring guide Stainless steel 13Flange Steel 14Orifice Stainless steel 15Base Stainless steel 17Valve body Cast iron 18Cover bolt Steel 20Setting spindle Stainless steel 21Screw M6 10Steel 22Cover gasket Nonasbestos 24Spring Steel 28Spring Steel Material specification2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=19http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=19Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area Danfoss AS RA Marketing MWA, 10 2007 DKRCI. PA. 000. A2. 02 520H1296 19 Are pressureoperated pilot valves with an external signal connection that can be used to obtain an indication of the system reference pressure. Are special valves which can be used with Hydro Carbon refrigerants. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . CVCE valves Temperature range 40120C 40248F. Max. working pressure 2817 bar 406247 psig Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name CVCE. All dimensions and performance data are identical to the standard CVC Literature no. PD. HN0. A. Material specification No. Part Material 17Valve body Stainless steel 43Seal Aluminium 44Blanking plug for pressure gauge connection Stainless steel 81Seal Nonasbestos 82Oring Flourocarbon Viton 103Banjo fitting Steel 104Oring Flourocarbon Viton 105Protective cap Steel 106Oring Cloroprene Neoprene 107 Signal connection 108Pilot orifice Stainless steel 109Connector on banjo fitting 103Steel 110Diaphragm Stainless steel 111Spring Steel 112Setting spindle Stainless steel Oring Flourocarbon Viton Oring Oring The maximum working pressure MWP refers to the highpressure side of the valve 28 bar the reference pressure 17 bar refers to the lowpressure side of the system. The reference pressure must be connected to the lowpressure side of the system. 2007-10-23T15:27:48+02:00http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=20http://nozebra.ipapercms.dk/Danfoss/RA/DanfossIndustrialRefrigeration/ATEX/?Page=20Application guide Industrial Refrigeration systems in Potentially Explosive Atmospheres Hazardous area 20 DKRCI. PA. 000. A2. 02 520H1296 Danfoss AS RA Marketing MWA, 10 2007 Are pilot solenoid valves suitable for liquid, suction and hot gas lines applications. Are special valves which can be used with Hydro Carbon refrigerants. Technical data Refrigerants Applicable to HC refrigerants e. g. Propane, Butane, Propylene, . . Temperature range 40120C 40248F. Max. working pressure 42 bar 609 psig. EVME valves Oring material Fluorocarbon Viton compound for low temperature application Marking The valve is marked with the name EVME. All dimensions and performance data are identical to the standard EVM Literature no. PD. HN0. A. Note Solenoid coils must be EX approved. No. Part Material 2Armature Stainless steel 3 Armature tube Stainless steel 4Seal Nonasbestos 5Oring Flourocarbon Viton 6Seal Aluminium 7Spacing ring 10Valve body Steel 11Valve seat Teflon PTFE Material specification 52007-10-23T15:27:48+02:00