Lubricant Adjusting Procedure For Compressor Replacement

LUBRICANT

Lubricant Adjusting Procedure for Compressor Replacement

1.Drain lubricant from removed compressor and measure lubricant amount.
1.Remove drain plug (A). Drain lubricant while rotating magnet clutch.





VQ-37VHR





VK-56VD
2.Tighten drain plug to the specified torque when lubricant does not come out.






3.Drain lubricant from high-pressure port (B) and low-pressure port (C) while rotating magnet clutch.
4.Measure total amount of lubricant that is drained from removed compressor.





2.Drain lubricant from a new compressor that is calculated according to the following conditions.






R: Lubricant amount to be added according to
components that are removed except compressor: Lubricant amount that is recycled together
with refrigerant during recycle operation

CAUTION:
If lubricant amount that is drained from removed compressor is less than 60 m (2.0 US fl oz., 2.1
Imp fl oz.), perform calculation by setting "D" as 40 m (1.4 US fl oz., 1.4 Imp fl oz.).





Example: Lubricant amount to be drained from a new compressor when replacing compressor and liquid tank [m (US fl oz., Imp fl oz.)] [D = 60 (2.0, 2.1), alpha = 5 (1.4, 1.4)]
150 (5.1, 5.3) [60 (1.5, 1.6) + 20 (0.7, 0.7) + 15 (0.5, 0.5) + 5 (0.2, 0.2)] = 50 (1.7, 1.8)
3.Install compressor and check the operation.