LB
II
-PLUS Technical Manual
9
2.1.2
Oil line blocking pin
If an external oil cooler is required to a single type compressor, oil blocking pin needs to be installed in the
compressor. The function of the blocking pin is to block the oil internal cycle of the compressor, so as to realize the
establishment of external oil.
Figure2-1 Oil line blocking pin diagram
2.2
Lubricant Application
2.2.1
Function of lubricant
The sealing oil film is formed between the rotors and the compression chamber and between the
male rotor and female rotor to reduce the leakage of the refrigerant gas from the high pressure side
to the low pressure side during the compression process.
The lubricant will absorb and take away the heat generated by the gas refrigerant during the
compression process and the heat generated by the mechanical movements among the bearings,
so as to ensure the long-term normal operation of the compressor and reduce the discharge
temperature.
To form the oil film among the bearings so as to ensure the operation of the bearing under normal
conditions.
Oil inlet
Oil line blocking pin
Oil outlet
