Unit
Electronic weighing scale
6
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from refrigerant cylinder
(1) Check that cylinder for R410A on the market is syphon type.
(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
[3] Service tools
Use the service tools below 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 5.3 MPa·G or over.
2
Charge hose
· Only for R410A
· Use pressure performance of 5.09 MPa·G or over.
3
Electronic scale
—
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
—
7
Refrigerant cylinder
· Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8
Refrigerant recovery equipment
—
OCH571D
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