Oil Level Check

GENERAL
When replacing any refrigerant cycle component part of a compressor, condenser, receiver drier, cooling unit, etc., it is essential to drain the refrigerant in advance.

The refrigerant has a large affinity for the compressor oil, and a part of the oil is always circulating throughout the cycle together with the refrigerant. In other words, the oil is distributed throughout the cycle. Before draining the refrigerant, it is therefore necessary to collect as much compressor oil as possible by performing the oil return operation. If the compressor oil is not replenished, or added fully after replacing component parts of refrigerant cycle, the following trouble may occur:

^ Insufficient oil: Seized compressor
^ Excessive oil: Poor cooling (Excess oil attached to parts obstructs normal heat exchange.)

For this reason, whenever replacing any parts of the refrigerant cycle (except the compressor), it is necessary to replenish the compressor oil removed together with such parts. On the other hand, a new compressor contains a specified amount of compressor oil, and simple installation of the new compressor results in excessive oil quantity in the cycle. To prevent this, the oil must be extracted from the cycle so that the optimum oil quantity can be ensured inside the refrigerant cycle.

Checking And Adjusting Chart:

Checking And Adjusting Chart Cont.:

CHECKING AND ADJUSTING
Adjust the oil quantity according to the flowchart.