Mitsubishi Electric PUZ-HA24NHA1 Service Manual page 4

[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) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is a syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Electric weighing scale
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name
Gauge manifold
1
Charge hose
2
3 Electronic weighing scale
4 Gas leak detector
5 Adaptor for reverse flow check
6 Refrigerant charge base
Refrigerant cylinder
7
8 Refrigerant recovery equipment
OCH750A
Specifications
· Only for R410A
· Use the existing fitting specifications .
· Use high-tension side pressure of 5.3 MPa·G or over.
· Only for R410A
· Use pressure performance of 5.09 MPa·G or over.
· Use the detector for R134a, R407C or R410A.
· Attach on vacuum pump.
· Only for R410A
· Cylinder with syphon
4
Unit
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· Top of cylinder (Pink)
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