Mitsubishi Electric PCA-RP50GA Service Manual page 4

[1] Cautions for service
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name
1
Gauge manifold
2
Charge hose
3
Electronic scale
4
Gas leak detector
5
Adapter for reverse flow check.
6
Refrigerant charge base.
7
Refrigerant cylinder.
8
Refrigerant recovery equipment.
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Gravimeter
Specifications
·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
·Use the detector for R134a or R407C.
·Attach on vacuum pump.
·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
4
Unit
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