R407 Maneurop Refrigeration Piston Compressor MTZ100HS4AVE Zeotropic

Maneurop Refrigeration Hermetic Reciprocating Compressor MTZ100HS4AVE

Product description:

During system standstill and after pressure equalization, refrigerant will condense in the coldest part of the system. The compressor can easily be the coldest spot, for example when it is placed outside in low ambient temperatures. After a while, the full system refrigerant charge can condense in the compressor crankcase. A large amount will dissolve in the compressor oil until the oil is completely saturated with refrigerant. If other system components are located at a higher level, this process can be even faster because gravity will assist the liquid refrigerant to flow back to the compressor. When the compressor is started, the pressure in the crankcase decreases rapidly At lower pressures the oil holds less refrigerant, and as a result part of the refrigerant will violently evaporate from the oil, causing the oil to foam. This process is often called “boiling”.
The negative effects from migration on the compressor are:
• oil dilution by liquid refrigerant
• oil foam, transported by refrigerant gas and discharged into the system, causing loss of oil and in extreme situations risk for oil slugging
• in extreme situations with high system refrigerant charge, liquid slugging could occur (liquid entering the compressor cylinders).

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