Mitsubishi Electric MXZ-2C20NA2, Service Manual

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10
Unit
Electronic weighing scale
[3] Service tools
(1) Use the below service tools as exclusive tools for R410A refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is a siphon type.
(2) Charging should be performed with the cylinder of siphon stood vertically. (Refrigerant is charged from liquid phase.)
[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.
No. Tool name
Specifications
1 Gauge manifold ·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 768.7 PSIG [5.3 MPaG] or over.
2 Charge hose ·Only for R410A
·Use pressure performance of 738.2 PSIG [5.09MPaG] or over.
3 Electronic weighing 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 siphon
8 Refrigerant recovery equipment —
OBH702N