Daikin RTSQ20PY1 Service Manual page 430

Precautions for New Refrigerant (R-410A)
2. Torque wrench
• Dimension B
• Change of dimension B
3. Vacuum pump with check valve
• Discharge speed
• Suction port UNF7/16-20(1/4 Flare)
• Equipped with function to prevent reverse oil flow
• Previous vacuum pump can be used by installing adaptor.
419
Specifications
Nominal size Class-1
1/2 24
5/8 27
No change in tightening torque
No change in pipes of other sizes
Differences
Only 1/2", 5/8" are extended
Specifications
50 l/min (50Hz)
60 l/min (60Hz)
UNF1/2-20(5/16 Flare) with adaptor
Differences
Class-2
26
29
For class-1: R-407C
For class-2: R-410A
Dimension B
Vacuum pump adaptor
Reverse flow preventive
vacuum adaptor
Maximum degree of vacuum
Select a vacuum pump which is able to keep
the vacuum degree of the system in excess of
–100.7 kPa (5 torr – 755 mmHg).
Precautions for New Refrigerant (R-410A)
SiBE31-801_C
Unit:mm
Previous
24
27