Related Manuals for Copeland ZRH47KTE
Summary of Contents for Copeland ZRH47KTE
- Page 1 APPLICATION GUIDELINES Copeland scroll compressors for transport applications ZRH(V) ZRH(V)
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Page 2: Table Of Contents
2.5.1 Qualified refrigerants and oils ................ 4 2.5.2 Application limits .................... 5 2.5.3 PED category and maximum allowable pressure PS........5 Dimensions......................6 2.6.1 ZRH47KTE & ZRH60KTE ................6 2.6.1 ZRH(V)72KT* & ZRH(V)81KT* ..............6 2.6.2 ZRH87KT* to ZRH136KT* & ZRHV94KT* ............. 7 Installation........................8 Compressor handling .................... - Page 3 3.11 Suction line accumulator ..................13 Electrical connection ....................14 General recommendations .................. 14 Electrical installation .................... 14 Terminal box – IP56 .................... 15 Motor winding ...................... 15 Motor protection....................15 High-potential testing................... 15 Inverter operation ....................16 Start-up & operation....................19 Strength pressure test ..................
- Page 4 References....................... 27 Appendix 1: Tightening torques ................... 28 AGL_AC_ST_ZRH_EN_Rev02...
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Page 5: About These Guidelines
About these guidelines The purpose of these guidelines is to provide guidance in the application of Copeland scroll compressors in users’ systems. They are intended to answer the questions raised while designing, assembling and operating a system with these products. -
Page 6: General Instructions
1.3 General instructions WARNING Pressurized system! Serious personal injuries and/or system breakdown! Accidental system start before complete set-up must be avoided. Never leave the system unattended without locking it out electrically when it is on vacuum and has no refrigerant charge, when it has a holding charge of nitrogen, or when the compressor service valves are closed. -
Page 7: Product Description
Copeland can provide support and assistance with individual projects. Copeland requirements and recommendations for transport applications are as follows: ▪... -
Page 8: Nomenclature
R134a R513A refrigerants Qualified oils Emkarate RL32 3MAF (factory charged) Servicing oils Emkarate RL32 3MAF Table 3: Qualified refrigerants and oils Oil recharge values can be taken from the compressor nameplate or from Copeland Select software available at www.copeland.com/en-gb/tools-resources. AGL_AC_ST_ZRH_EN_Rev02... -
Page 9: Application Limits
For a typical evaporator-expansion valve configuration a minimum stable superheat of at least 5 K is required. For application envelopes and technical data, please refer to Copeland Select software available at www.copeland.com/en-gb/tools-resources. 2.5.3 PED category and maximum allowable pressure PS... -
Page 10: Dimensions
2.6 Dimensions 2.6.1 ZRH47KTE & ZRH60KTE Figure 2: Front view Figure 3: Side view 2.6.1 ZRH(V)72KT* & ZRH(V)81KT* Figure 4: Front view AGL_AC_ST_ZRH_EN_Rev02... -
Page 11: Zrh87Kt* To Zrh136Kt* & Zrhv94Kt
Figure 5: Side view 2.6.2 ZRH87KT* to ZRH136KT* & ZRHV94KT* Figure 6: Front view Figure 7: Side view AGL_AC_ST_ZRH_EN_Rev02... -
Page 12: Installation
Figure 9: Transportation of ZRH(V)*KTE/KTR compressors Gross weight Net weight Compressor model (mm) (mm) (mm) (kg) (kg) ZRH47KTE & ZRH60KTE ZRH(V)72KT* & ZRH(V)81KT* 1175 1130 ZRH87KT* to ZRH136KT*, 1175 1130 ZRHV94KT* Table 6: Packaging dimensions for ZRH(V)*KTE/KTR compressors transportation 3.1.2 Positioning and securing... -
Page 13: Installation Location, Maximum Tilting And Rotating Angle
Alternatively, rubber mounting parts of variable hardness can be used. The unit designer should make a choice after observing the shock/vibration test results. For the individual system review and qualification, Copeland can offer some mounting parts kit options. 3.3 Brazing procedure... -
Page 14: Pressure Safety Controls
NOTE: Since the discharge stub contains a check valve, care must be taken not to overheat it to prevent brazing material from flowing into it. 3.4 Pressure safety controls Copeland requires the installation of low- and high-pressure controls, preferably direct acting, for all transport systems. 3.4.1 High-pressure protection Applicable regulations and standards, for example EN 378-2, shall be complied with to apply appropriate control and ensure that the pressure never exceeds the maximum limit. -
Page 15: Discharge Gas Temperature Protection
The main function of the internal check valve is to reduce the reverse rotation noise after compressor stop. Copeland recommends adding a gas-tight external check valve in the discharge line of the ZRH(V)*KT* compressors in transport applications, to avoid liquid refrigerant migration into the compressor during standstill. -
Page 16: Compressor Oil Return, Oil Balancing, Refrigerant Floodback And Oil Dilution Tests
A sample compressor equipped with an external oil sight tube can be ordered from Copeland for lab testing. Records of the evaporating temperature and the bottom shell temperature shall be taken with a high sampling rate during the entire oil return or oil balance testing and under all tested conditions. -
Page 17: Suction Line Accumulator
3.11 Suction line accumulator Thanks to Copeland scroll’s inherent ability to handle liquid refrigerant, for example in flooded start and defrost cycle operation, an accumulator is not required in most systems. The system designer must determine if a suction line accumulator is required with an appropriate test scenario. -
Page 18: Electrical Connection
Electrical connection 4.1 General recommendations WARNING Conductor cables! Electrical shock hazard! Shut off power supply before undertaking any task on electrical equipment. The compressor terminal box has a wiring diagram on the inside of its cover. Before connecting the compressor, ensure the supply voltage, the phases and the frequency match the nameplate data. 4.2 Electrical installation The recommended wiring diagrams are shown hereunder. -
Page 19: Terminal Box - Ip56
Ensure correct connection of cables to the compressor terminal Fusite to avoid local overheating. Cable glands have an influence on the protection class of the terminal box. Copeland strongly recommends using appropriate cable glands according to EN 50262 in order to reach the rated protection class. -
Page 20: Inverter Operation
4.7 Inverter operation The whole range of fixed-speed horizontal scroll compressor models from ZRH47KT* to ZRH136KT* is limited to operation at 50 or 60 Hz. Variable-speed models ZRHV72KT* and ZRHV81KT* can be operated on inverter-derived power over the range of 30 to 80 Hz with R134a/R513A and 25 to 100 Hz with R407C. The frequency range for compressors ZRHV94KT* is 35 to 80 Hz. - Page 21 Operating compressor models ZRHV72KT*, ZRHV81KT* and ZRHV94KTE over a defined frequency range will result in different application envelopes – see Figures 20 to 23. These envelopes are more restricted at lower operating speeds. This is to prevent bearing overloading and compressor motor overheating during low-speed operation.
- Page 22 45 – 80 Hz 35 – 80 Hz Figure 23: Operating envelope for variable-speed ZRHV94KT* with R134a/R513A AGL_AC_ST_ZRH_EN_Rev02...
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Page 23: Start-Up & Operation
DO NOT USE other industrial gases. 5.1.1 Compressor strength-pressure test The compressor has been strength-pressure tested in the Copeland factory. Therefore, it is not necessary for the system manufacturer/installer to strength-pressure test the compressor again. Scroll compressors are divided into two pressure zones. The compressor high-side and low-side maximum allowable pressures PS have to be respected at all times. -
Page 24: System Evacuation
The highest demands are placed on the leak-proof design of the installation and on the leak testing methods – refer to, eg, EN 378. Never add refrigerant to the test gas (as leak indicator). 5.3 System evacuation Before the installation is put into commission, it has to be evacuated with a vacuum pump. The installation should be evacuated down to an absolute pressure of 3 mbar or lower. -
Page 25: Initial Start-Up
During the very brief start-up, a clicking sound resulting from the initial contacting of the spirals is audible; this sound is normal. Due to the design of the Copeland scroll compressors, the internal compression components always start unloaded even if system pressures are not balanced. In addition, since internal compressor pressures are always balanced at start-up, low voltage starting characteristics are excellent for Copeland scroll compressors. -
Page 26: Shell Temperature
5.14 Minimum run time Copeland recommends a maximum of 10 starts per hour. There is no minimum off time because scroll compressors start unloaded, even if the system has unbalanced pressures. The most critical consideration is the minimum run time required to return oil to the compressor after start-up. -
Page 27: Oil Level
For this purpose, a sample compressor, equipped with an external oil sight tube, is available from Copeland for lab testing. A sufficient oil level must be present in the compressor at all times to ensure compressor reliability. -
Page 28: Maintenance & Repair
Maintenance & repair WARNING Conductor cables! Electrical shock hazard! Follow the lockout/tag out procedure and the national regulations before carrying out any maintenance or service work on the system. Use compressor with grounded system only. Screwed electrical connections must be used in all applications. Refer to original equipment wiring diagrams. Electrical connections must be made by qualified electrical personnel. -
Page 29: Replacing A Compressor
6.3.3 Compressor return procedure Compressors from systems with A1 refrigerant can be sent back to Copeland for diagnosis with closed connections and the oil filling inside. However, the refrigerant should be removed. ▪ The compressor must be kept in the horizontal position – mark the box accordingly. -
Page 30: Oil Additives
Copeland compressors contain oil with low moisture content, which however may rise during the system assembling process. Therefore, it is recommended to install a properly sized filter-dryer in all POE systems to maintain the moisture level in the oil to less than 50 ppm. If POE oil is charged into a system, it is recommended that its moisture content be no higher than 50 ppm. -
Page 31: Dismantling & Disposal
Application Guidelines and Technical Information. Performance and technical data: The latest version of Copeland Select software with performance data and technical data is available from the webpage www.copeland.com/en-gb/tools-resources. Spare parts and accessories: An online version of the Copeland spare parts and accessories catalogue is available from the webpage www.copeland.com/en-gb/tools-resources. -
Page 32: Appendix 1: Tightening Torques
Ground screw DISCLAIMER: The Copeland logo is a trademark and service mark of Copeland LP or one of its affiliates. Copeland Europe GmbH shall not be liable for errors in the stated capacities, dimensions, etc., as well as typographic errors. Products, specifications, assumptions, designs and technical data contained in this document are subject to modification by us without prior notice. - Page 33 Tel. +49 (0) 2408 929 0 - Fax: +49 (0) 2408 929 570 – Internet: copeland.com/en-gb The Copeland logo is a trademark and service mark of Copeland LP or one of its affliates. Copeland Europe GmbH shall not be liable for errors in the stated capacities, dimensions, etc., as well as typographic errors.
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