Unicla UWX550, Installation Manuallines

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For the compressor and system, Unicla compressor oil circulation requires that the correct amount of
oil must exist in the system to ensure oil and refrigerant flows back to the compressor in the correct
mixture ratio. To achieve this, the total oil quantity added to the system is as follows:
The limits for mounting Unicla UWX compressors are described in the following diagrams:
5. System oil quantity requirement
4. Mounting angle
Note:
Oil quantity recommendations are in addition to the oil installed in the compressor. Unicla
440 and 550 series compressors are fitted with 1000cc of oil as standard, and this amount is excluded
from the quantities recommend above.
Note: Oil quantity calculations are contained in the Unicla Service Handbook. Total system oil
requirement is based on 20% and 30 % of refrigerant charge for systems with < 6m suction line and
> 6m suction line respectively.
Larger capacity systems holding > 7.0 kg of refrigerant are deemed to require the maximum oil
quantity (30% of refrigerant charge) due to the potential size of the heat exchangers and hose runs
holding extra system oil.
Total Refrigerant in system Oil quantity to add –if suction
line < 6 metres in length
Oil quantity to add –if suction
line > 6 metres in length
5kg Nil 500cc
5.5kg 100cc 650cc
6.0kg 200cc 800cc
6.5kg 300cc 950cc
7.0kg 400cc 1100cc
7.5kg 1250cc 1250cc
8.0kg 1400cc 1400cc
within 10˚
within 10˚
within 45˚ within 45˚
4.