Mitsubishi EHST20D-YM9C - Cautions for Service; Additional Refrigerant Charge; Service Tools

Electronic weighing scale
Unit
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
—
OCH570C