Three phase scrolls can rotate in either direction depending on how it is wired. If running in reverse rotation the compressor will have elevated sound levels, reduced current draw and suction pressures will not drop along with a non rise in discharge pressure. The compressor will eventually trip on motor protector. Observing that suction pressure drops and discharge pressure rises when the compressor is energized allows verification of proper rotation direction.

Compressor refrigerant ratings are based on engineering design, displacement and motor specifications. These and other factors are used to determine the refrigerant type and application. This information can be observed in the Copeland Selection Software, or in the corresponding Application Guidelines, which can be found in the Product Literature section of the website (technical information).

Capacity ratings for Copeland™ brand compressors can be found on the published technical data, for example in the Selection Software.

The normal superheat settings for thermostatic expansion valves depend on the application. The recommended superheat for low temp applications is 8-12K, for medium temp applications 5-8K and for high temp applications around 5K.

The maximum allowed discharge temperature inside the scroll compressor is 130°C, considering the compressor is running inside the approved application limits.

Net oil pressure is found by subtracting the crankcase pressure from the pressure measured at the oil pump outlet.

When using CFC or HCHC refrigerants, POE and MO can be mixed. The exception is R12 that only uses MO or Alkyl Benzene Mineral Oil (ABMO) blend. HFC refrigerants can only use POE oil.

The viscosity of the factory ester oil filled Copeland™ brand compressors is 32 centistokes (filled with RL32-3MAF). The standard oil for CO2 (R744) ZO Scroll compressors is RL68 HB (the viscosity is 68 centistokes).

Bolt torque specifications for DWM Copeland compressors can be found in the Application Guidelines for semi-hermetic compressors, under Product Literature then technical information.

No. Additives are not permitted.

This information can be found on the compressor nameplate. The oil type will be abbreviated, for example MIN, meaning mineral oil or POE, meaning polyol ester oil. The oil amount is the number found beneath the oil type and is given in liter.