Related Manuals for Emerson Copeland Scroll ZRH49KJE
Summary of Contents for Emerson Copeland Scroll ZRH49KJE
- Page 1 Horizontal Scroll compressors for Transport Air-Conditioning ZRH49KJE to ZRH72KJE, ZBH30KJE to ZBH45KJE, ZRHV72KJE and ZBHV45KJE.
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Page 2: Table Of Contents
Safety instructions....................1 1.1 Icon explanation ......................1 1.2 Safety statements......................1 1.3 General instructions......................2 Product description .................... 2 2.1 Common information about Copeland Scroll™ compressors........... 2 2.2 About this guideline ......................2 2.3 Nomenclature ........................3 2.4 Application range......................3 2.4.1 Qualified refrigerants and oils................ - Page 3 5.4 First start ........................12 5.5 Charging procedure....................... 13 5.6 Rotation direction......................13 5.7 Minimum run time ......................13 5.8 Pump-down cycle ......................13 Maintenance & repair..................14 6.1 Exchanging the refrigerant..................... 14 6.2 Replacing a compressor ....................14 6.2.1 Compressor replacement ...................
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Page 4: Safety Instructions
Safety instructions These compressors are constructed according to the latest European and US Safety Standards. Particular emphasis has been placed on the user’s safety. Certain residual hazards from the compressor are not avoidable. These compressors are intended for installation in systems according to the EC Machines directive. -
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 refrigerant and refrigeration oils must be used. -
Page 6: Nomenclature
Nomenclature The model designation contains the following technical information about the compressor: Z R H V 72K J E - TFD - 650 Bill of material number Motor version Oil type: E = POE oil None = mineral oil Model variation Nominal capacity [BTU/h] @ 60 Hz and ARI conditions V = Variable speed None = Fixed s peed... -
Page 7: Installation
R407C (mid point) R134a 45-75 Hz 45-75 Hz 35-75 Hz 35-75 Hz To(°C) To(°C) Figure 2: ZRHV72* & ZBHV45* envelopes with 10K suction superheat 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... -
Page 8: Installation Location
NOTE: Keep the compressor upright during installation and removal; otherwise oil could spill out of the suction tube. 3.1.3 Installation location Ensure the compressors are installed on a solid level base. 3.1.4 Mounting parts Four vibration absorber grommets are supplied with each compressor. they dampen the start-up surge of the compressor and minimise sound and vibration transmission to the compressor base during operation. -
Page 9: Shut-Off Valves And Adaptors
The copper-coated steel tubes on scroll compressors can be brazed in approximately the same manner as any copper tube. Recommended brazing materials: any silfos material is recommended, preferably with a minimum of 5% silver. However, 0% silver is acceptable. Be sure tube fitting inner diameter and tube outer diameter are clean prior to assembly. Using a double-tipped torch, apply heat in area 1. -
Page 10: 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. CAUTION Screen blocking! Compressor breakdown! Use screens with at least 0.6 mm openings (30 x 30 meshes per inch). -
Page 11: 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. Compressors can be delivered with various types of connection depending on the bill of material: For ¼"... -
Page 12: Inverter Operation
Inverter operation Since Copeland Horizontal Scroll compressors are designed for mobile air conditioning applications, they can operate on inverter-derived power. The ZRH and ZBH compressors are limited to fixed speed operation at either 50 or 60 Hz. The variable speed ZRHV and ZBHV Copeland Horizontal Scroll compressors can be operated over the range of 35-75 Hz. -
Page 13: Low-Pressure Control
4.5.2 Low-pressure control IMPORTANT! Loss of system charge! Bearing malfunction! A low-pressure control is highly recommended for loss of charge protection. Do not bridge or by-pass the low-pressure cut out. Copeland Horizontal Scroll compressors require a low-pressure control for loss of charge protection. -
Page 14: Motor Protection
Discharge line thermostats - available from Copeland - will provide adequate temperature protection in fixed applications. Install the thermostat approximately 120 mm from the discharge valve outlet. Figure 9 In order to avoid improper functioning due to false readings, this thermostat needs to be insulated. -
Page 15: Starting Up & Operation
Starting 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 16: Charging Procedure
Charging procedure It is considered good practice when charging a system to charge liquid refrigerant into the high side and vapour charge the low side of the system. An alternative method is for liquid to be charged through the liquid receiver shut-off valve or through a valve in the liquid line. -
Page 17: Maintenance & Repair
necessary to pump down into nearly a vacuum to remove all liquid refrigerant from the low side. If the low-pressure switch opens, the pump down should stop immediately. Copeland Scroll compressors trap a considerable volume of high-pressure gas between the muffler plate and the top cap. -
Page 18: Compressor Functional Check
One disadvantage of POE is that it is far more hygroscopic than mineral oil (see Fig. 10). Only brief exposure to ambient air is needed for POE to absorb sufficient moisture to make it unacceptable for use in a refrigeration system. Since POE holds moisture more readily than mineral oil it is more difficult to remove it through the use of vacuum. -
Page 19: Unbrazing System Components
7. Before replacing or returning a compressor, make certain the compressor is actually defective. As a minimum, recheck a compressor returned from the field in the shop or depot for Hipot failure, winding resistance, and ability to start before returning. More than one third of compressors returned to Copeland for warranty analysis are determined to have nothing found wrong. - Page 20 Phone: +49 (0) 2408 929 0 - Fax: +49 (0) 2408 929 570 - Internet: www.eCopeland.com The Emerson Climate Technologies logo is a trademark and service mark of Emerson Electric Co. Copeland Corporation is a subsidiary of Emerson Electric Co. Copeland is a registered trademark and Copeland Scroll is a trademark of Copeland Corporation.