ANSWER: Two, spiral-shaped members fit together, forming crescent shaped gas pockets. One member remains stationary, while the second orbits relative to the first. As the spiral movement continues, gas is drawn in and forced toward the center of the scroll form, creating increasingly higher gas pressures and discharging the gas from the port of the fixed scroll member. Visit the scroll technology page for additional information and to watch an animated scroll demonstration. See similar questions...

ANSWER: Copeland Scroll compressors are direction-dependent, meaning they will compress in just one rotational direction. Three-phase scrolls will rotate in either direction, depending on power phasing. Here, the service technician should be aware of potential problems associated with reverse rotation. Prolonged operation in reverse result in insufficient lubrication, scroll galling and scroll set damage. See similar questions...

ANSWER: Copeland brand product's compliant design provides both axial and radial compliance between scroll members, increasing compressor life. "Compliance" is the ability to separate under abnormal conditions. This feature eliminates interference contact, which can cause breakage. Axial compliance allows the scroll to remain in continuous contact in all normal operating conditions, ensuring minimal leakage without the use of tip seals. See similar questions...

Compressors do just what there name says they compress the refrigerant to change it’s state from a low temperature gas to a high temperature gas so it can expel heat into an area where it is desirable. See similar questions...

ANSWER: Compressor mounting must be selected by application, with special consideration given to sound reduction and tubing reliability. Use hard mounts for multi-scroll racks, and soft mounts for single scroll units. See similar questions...

Ans:Scroll Compressor has a moving scroll which creates pressure. A Reciprocating Compressor uses piston cylinder to compress the refrigerant gas. See similar questions...

Because you are using MacOS 9. The scroll wheel works in MacOS X and MS Windows, but not MacOS 9 until/if Apple updates it like they did with MacOS X, which will never happen because Apple has ceased development on MacOS 9. So the only solution is to upgrade to MacOS X. Can you notify me / e-mail me when there is a new version / update / upgrade? Yes. Join Haxial's Announcement Mailing List. See similar questions...

Thermoelectric coolers are solid state heat pumps which have no moving parts and do not require the use of harmful CFCs. Because they have no moving parts they are inherently reliable and require little or no maintenance. They are ideal for cooling devices that may be sensitive to mechanical vibration. Their compact size makes them well suited for applications that are space or weight limited such as portable or airborne equipment. See similar questions...

ANSWER: Currently only Emerson Climate Technologies builds scroll compressors released for R-410A. If the second letter of the model number is a P, then the compressor is designated for R-410A. For example: ZP54K3E-XXX as opposed to the R-22 designation: ZR54K3E-XXX. Go to Online Product Information (OPI) for more information. See similar questions...

ANSWER: At first glance, refrigeration scroll compressors look very much like their air conditioning counterparts. But these two products are really quite different. Refrigeration scrolls undergo a number of design changes before they can meet the distinct performance demands of commercial refrigeration equipment. For example, you won't find liquid injection capability or an oil sight glass on an air conditioning scroll compressor. See similar questions...

ANSWER: On rack applications all compressors require the use of an oil management system to maintain proper oil level in the compressor crankcase. Unlike reciprocating compressors, scroll oil pumps do not have accompanying oil pressure safety controls; instead, they require an external oil level control. The control should combine the functions of oil level control and timed compressor shut-off should the oil level not come back to normal within a set period of time. See similar questions...

ANSWER: Refrigeration scrolls operate with either liquid or vapor injection, making a wider operating envelope available. The liquid injection function feeds a steady flow of liquid to the middle of the scroll compression cycle to cool compressor components. This does not affect the compressor's performance as it would a reciprocating compressor. Injection is controlled by a liquid solenoid valve and cap tube metering device which feeds more liquid as head pressure rises. See similar questions...

ANSWER: Scrolls handle liquid better than most other compressor types, but still can require additional accessories for optimal protection. Those accessories include: Accumulators are recommended for systems with large refrigerant charge or those that allow for uncontrolled refrigerant floodback. Crankcase heaters are required for three-phase systems with large refrigerant charge and in/outdoor applications. See similar questions...

ANSWER: As with all compressor types, it is important to monitor and control pressure and temperature in refrigeration scroll applications. A discharge line thermostat is required on all models from 2 to 6 hp. It is set to shut off the compressor at 125?C (250?F) or less. The thermostat must be insulated if the application is outdoors. It should also be located 12.5 cm (5 inches) from the discharge connection to the compressor. Both high and low-pressure controls are required. See similar questions...

ANSWER: Due to the fact that low-temp scrolls are adaptable for use on high, medium, and low temp applications, authorized wholesalers will stock this model for use on all equipment. Specification sheets with compressor rating data (amps, capacity, watts, and mass flow) are also available at your local Authorized Wholesaler or can be found on Emerson Climate Technologies' Online Product Information (OPI). See similar questions...

Visit the R-410A Knowledge Site to view Emerson Climate Technologies’ research results on environmentally friendly refrigerants. See similar questions...

A1: You have your website anywhere on the Internet containing your products. You add our html tags to your pages. When customers click "add to cart", the product information is tracked on our server. When they click "check out", the order is checked for correct field entry, and sent to you via email. You then process the order as if it were a conventional phone order. See similar questions...

ANSWER: Visit the training page for information on Copeland’s renowned Compressor Operation & Service Seminars (COSS), as well as order forms for videos, workbooks and literature. See similar questions...

The teleprompter scrolls the text of the story automatically, based on the reader’s predetermined reading speed. They can customize their color and font preferences on the teleprompter screen. Actualities can be played directly from the teleprompter and to accommodate the reader the auto-scroll pauses, and begins again when the audio is finished. See similar questions...

A1: APOD stands for the Astronomy Picture of the Day. We abbreviate this as APOD instead of ApotD because APOD sounds better (spoken: AYE-pod). See similar questions...