Mitsubishi Electric EHGT17D-YM9ED Service Manual page 7

[5] Service tools
Use the below service tools as exclusive tools for R32 refrigerant.
No. Tool name
Gauge manifold
1
Charge hose
2
Electronic weighing scale
3
Gas leak detector
4
Adaptor for reverse flow check
5
Refrigerant charge base
6
Refrigerant cylinder
7
Refrigerant recovery equipment
8
1-3. PRECAUTIONS WHEN REUSING EXISTING R22/R410a REFRIGERANT TOOLS
Cautions for refrigerant piping work
Tools for R32 (The following table shows whether conventional tools can be used or not.)
Tools and materials Use
Gauge manifold Air purge, refrigerant
charge and operation check
Charge hose
Gas leak detector Gas leak check
Refrigerant recovery
Refrigerant recovery equipment
Refrigerant cylinder Refrigerant charge
Safety charger Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Charge valve
Prevent gas from blowing out
when detaching charge hose
Vacuum pump Vacuum drying and air purge
Welder and nitrogen gas cylinder Weld the pipes
Refrigerant charging scale Refrigerant charge
Vacuum gauge or Check the degree of vacuum.
(Vacuum valve prevents back
thermistor vacuum gauge
flow of oil and refrigerant to
and vacuum valve
thermistor vacuum gauge)
Charging cylinder Refrigerant charge
× : Prepare a new tool. (Use the new tool as the tool exclusive for R32.)
△ : Tools for other refrigerants can be used under certain conditions.
〇 : Tools for other refrigerants can be used.
OCH722A
· Only for R32
· Use the existing fitting specifications . (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
· Only for R32
· Use pressure performance of 5.09MPa·G or over.
· Use the detector for R134a, R407C, R410a or R32.
· Attach on vacuum pump.
· Only for R32
· Cylinder with syphon
R32 tools Can R22 tools be used?
Tool exclusive for R32
Tool exclusive for R32
Tool for HFC refrigerant
Tool exclusive for R32
Tool exclusive for R32
Tool exclusive for R32
Tool exclusive for R32
△  ( Usable if equipped with
Tools for other refrigerants
can be used if equipped with
adapter for reverse flow)
adapter for reverse flow check
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R32
7
Specifications
—
—
—
Can R407C tools be used? Can R410a tools be used?
× ×
× ×
× 〇
× ×
× ×
× ×
× ×
△  ( Usable if equipped with
adapter for reverse flow)
〇 〇
〇 〇
〇 〇
× ─
〇
〇
〇
〇
×
〇
〇
△  ( Usable if equipped with
adapter for reverse flow)
〇
〇
〇
×