Related Manuals for Emerson Copeland Scroll ZRH49K Series
Summary of Contents for Emerson Copeland Scroll ZRH49K Series
- Page 1 Application Guidelines Copeland Scroll Horizontal Compressors ™ for Air-Conditioning Applications ZRH49K* to ZRH72K*, ZBH30K* to ZBH45K* ZRHV45K* & ZRHV72K*...
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Page 2: Table Of Contents
About these guidelines ....................1 Safety instructions ................... 1 1.1 Icon explanation ....................... 1 1.2 Safety statements ......................1 1.3 General instructions ......................2 Product description ..................3 2.1 General information about Copeland Scroll™ compressors ........... 3 2.2 Nomenclature ........................3 2.3 Application range ...................... - Page 3 4.5 Discharge gas temperature protection ................15 4.6 Motor protection ......................16 4.7 High-potential testing ..................... 16 Start-up & operation ..................17 5.1 Strength pressure test ....................17 5.2 Tightness/pressure test ....................17 5.3 System evacuation ......................17 5.4 Preliminary checks – Pre-starting .................. 17 5.5 First start ........................
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Page 4: About These Guidelines
Besides the support they provide, the instructions listed herein are also critical for the proper and safe functioning of the compressors. Emerson cannot guarantee the performance and reliability of the product if it is misused in regard of these guidelines. -
Page 5: General Instructions
General instructions WARNING System breakdown! Personal injuries! Never install a system in the field and leave it unattended when it has no charge, a holding charge, or with the service valves closed without electrically locking out the system. System breakdown! Personal injuries! Only approved refrigerants and refrigeration oils must be used. -
Page 6: Product Description
It is essential that the glide of refrigerant blends (primarily R407C) be carefully considered when adjusting pressure and superheat controls. Oil recharge values can be taken from Copeland Scroll compressors brochures or Copeland™ brand products Select software available at www.climate.emerson.com/en-gb. Qualified refrigerants R407C & R134a... -
Page 7: Application Limits
The qualification for the parts and individual requirements, like system components, piping, piping layout, fixation, as well as a study about shock, vibration and load requirements must be carried out by the unit designer for the whole system. Emerson can provide support and assistance with individual projects. -
Page 8: Dimensions
Dimensions Figure 1: Dimensions of models ZBH30KJE to ZBH45KJE and ZBHV45KJE C6.2.7/1007-0619/E... - Page 9 Figure 2: Dimensions of models ZRH42KJE to ZRH72KJE and ZRHV72KJE C6.2.7/1007-0619/E...
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Page 10: Installation
Installation WARNING High pressure! Injury to skin and eyes possible! Be careful when opening connections on a pressurized item. Compressor handling 3.1.1 Transport and storage WARNING Risk of collapse! Personal injuries! Move compressors only with appropriate mechanical or handling equipment according to weight. Keep in the upright position. -
Page 11: Mounting Parts
Figure 5: Installation of soft rubber mounting parts NOTE: Use the advised torque below to avoid crushing the sleeve. NOTE: For an overview of ident numbers, various mounting part alternatives and other accessories, please refer Emerson spare parts software available www.climate.emerson.com/en-gb. -
Page 12: Shut-Off Valves And Adaptors
Rotalock 1 ¼" – 12 UNF 110 - 135 Rotalock 1 ¾" – 12 UNF 135 - 160 Table 4 NOTE: More information about adaptors and shut-off valves can be found in the "Spare parts list" available at www.climate.emerson.com/en-gb. C6.2.7/1007-0619/E... -
Page 13: Accumulators
Accumulators CAUTION Inadequate lubrication! Bearing destruction! Minimise liquid refrigerant returning to the compressor. Too much refrigerant dilutes the oil. Liquid refrigerant can wash the oil off the bearings leading to overheating and bearing failure. Irrespective of system charge, oil dilution may occur if large amounts of liquid refrigerant repeatedly flood back to the compressor, for example during: ▪... -
Page 14: Electrical Connection
Electrical connection General recommendations 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. Electrical installation WARNING Conductor cables! Electrical shock! Shut off power supply before and between each test. -
Page 15: Removing The Molded Plug Cable
▪ For molded plug cables with grounding: disconnect the grounding from the compressor circle fence. NOTE: To select the appropriate molded plug power cables, please refer to the Emerson spare parts software available at www.climate.emerson.com/en-gb. 4.2.4 Wiring diagram Three-phase compressors (TF*) with internal motor protection:... -
Page 16: Protection Devices
4.2.6 Protection devices Independently from the internal motor protection, fuses must be installed before the compressor. The selection of fuses has to be done according to VDE 0635, DIN 57635, IEC 269-1 or EN 60-269-1. 4.2.7 Crankcase heater IMPORTANT Oil dilution! Bearing malfunction! Turn the crankcase heater on 12 hours before starting the compressor. - Page 17 45-75Hz R407C 35-75Hz Evaporating Temperature ( Figure 14: Operating envelope for variable speed ZRHV72KJE and ZBHV45KJE with R407C 45-75Hz R134a 35-75Hz Evaporating Temperature ( Figure 15: Operating envelope for variable speed ZRHV72KJE and ZBHV45KJE with R134a C6.2.7/1007-0619/E...
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Page 18: Pressure Safety Controls
The minimum cut-out setting shall be determined according to the refrigerant and to the allowed operation envelope – see technical data in Select software at www.climate.emerson.com/en-gb. For example, a minimum cut-out setting of 1.0 bar(g) is required for ZRH* and ZBH* compressors using R407C. -
Page 19: Motor Protection
Emerson subjects all Scroll compressors to a high-voltage test after final assembly. Each motor phase winding is tested, according to EN 0530 or VDE 0530 part 1, at a differential voltage of 1000V plus twice the nominal voltage. -
Page 20: Start-Up & Operation
Start-up & operation WARNING Diesel effect! Compressor destruction! The mixture of air and oil at high temperature can lead to an explosion. Avoid operating with air. IMPORTANT Oil dilution! Bearing malfunction! Turn the crankcase heater on 12 hours before starting the compressor. Strength pressure test The compressor has been strength-tested in the factory. -
Page 21: First Start
First start It is good practice to stop the compressor after 15 minutes running on full or part load then check the oil levels in both sight glasses. The oil levels should be halfway up the sight glasses. This is to ensure that any oil carried over into the system is being returned to the compressor and the compressor is not short of oil. -
Page 22: Starting Sound
This extra-low leak check valve must be qualified for discharge line service. For further support, please contact the Application Engineering department at Emerson or your local Emerson representative. 5.12 Pumpdown cycle A pumpdown cycle may be used in conjunction with the crankcase heater to control refrigerant migration at standstill. -
Page 23: Shell Temperature
(available from Emerson) and install it in a system with the longest connecting lines that are approved for the system. The minimum on time becomes the time required for oil lost during compressor start-up to return to the compressor sump and restore a minimal oil level that will ensure oil pick-up through the crankshaft. -
Page 24: Maintenance & Repair
Maintenance & repair Exchanging the refrigerant Qualified refrigerants and oils are given in section 2.3.1. It is not necessary to replace the refrigerant with new unless contamination due to an error such as topping up the system with an incorrect refrigerant is suspected. To verify correct refrigerant composition, a sample can be taken for chemical analysis. -
Page 25: Lubrication And Oil Removal
Since POE holds moisture more readily than mineral oil it is more difficult to remove it through the use of vacuum. Compressors supplied by Emerson contain oil with low moisture content, and it may rise during the system assembling process. Therefore it is recommended that a properly-sized filter-drier be installed in all POE systems. -
Page 26: Dismantling & Disposal
3. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson product remains solely with the purchaser or end user. - Page 27 The Emerson logo is a trademark and service mark of Emerson Electric Co. Emerson Climate Technologies Inc. is a subsidiary of Emerson Electric Co. Copeland is a registered trademark and Copeland Scroll is a trademark of Emerson Climate Technologies Inc.. All other trademarks are property of their respective owners.
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