ESIE09-05 Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A) 243
2. Torque wrench
Specifications
• Dimension B Unit:mm
No change in tightening torque
No change in pipes of other sizes
Differences
• Change of dimension B
Only 1/2", 5/8" are extended
3. Vacuum pump with check valve
Specifications
• Discharge speed z Maximum degree of vacuum
50 l/min (50Hz) Select a vacuum pump which is able to keep
60 l/min (60Hz) the vacuum degree of the system in excess of
• Suction port UNF7/16-20(1/4 Flare) –100.7 kPa (5 torr – 755 mmHg).
UNF1/2-20(5/16 Flare) with adapter
Differences
• Equipped with function to prevent reverse oil flow
• Previous vacuum pump can be used by installing adapter.
Nominal size Class-1 Class-2 Previous
1/2 24 26 24
5/8 27 29 27
Dimension B
For class-1: R-407C
For class-2: R-410A
Vacuum pump adapter
Reverse flow preventive
vacuum adapter
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