4
HWE1305A
SAFETY PRECAUTIONS
<2> Additional refrigerant charge
When charging directly from cylinder
•
Check that cylinder for R410A on the market is syphon type.
•
Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Gravimeter
Unit
<3> Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No.
Tool name
Specifications
1 Gauge manifold
•
Only for R410A
•
Use the existing fitting specifications. (UNF1/2)
•
Use high-tension side pressure of 5.3MPa·G or over.
2 Charge hose
•
Only for R410A
•
Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
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4 Gas leak detector
•
Use the detector for R134a, R407C or R410A.
5 Adaptor for reverse flow check
•
Attach on vacuum pump.
6 Refrigerant charge base
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7 Refrigerant cylinder
•
Only for R410A
•
Top of cylinder (Pink)
•
Cylinder with syphon
8 Refrigerant recovery equipment
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