Oil charge for BITZER compressors
BSE60K | BSE85K | BSG68K | |
2NSL– 4NSL | Standard | Option | Option |
2MME– 6PME | Standard | Option | Option |
2MTE– 8CTE | - | Standard | Option |
NOTICE
Use BSE85K: For booster units with POE oils and the compressors 2NSL– 4NSL and 2MME– 6PME.
Use BSE85K: For booster units with POE oils and the compressors 2NSL– 4NSL and 2MME– 6PME.
NOTICE
Only use BSG68K for applications with suction pressure > 40 bar and/or high pressure > 120 bar (e.g. heat pumps).
Only use BSG68K for applications with suction pressure > 40 bar and/or high pressure > 120 bar (e.g. heat pumps).
Note when using PAG oil (BSG68K):
- PAG oil is only partially miscible with the liquid phase of R744.
- When PAG oil is mixed with liquid R744 in containers, the oil-rich phase sinks to the bottom of the vessel to a saturation temperature of -32°C. In applications with low-pressure separators, the oil can therefore be removed in the lower part of the separator. At temperatures lower than -32°C, however, the oil will float!
- To keep the proportion of liquid in the oil return line as low as possible, install an internal heat exchanger, e.g. between the gas cooler outlet and the oil return.
- Generally observe the flow velocities at the evaporator outlet. If the speeds are too low, there is a risk of oil migration back into the heat exchangers.