Mitsubishi Electric CITY MULTI PUMY-P112VKM6 Service Manual page 6

■ Tools for R410A (The following table shows whether conventional tools can be used or not.)
Tools and materials
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery
equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool*
Bender
Pipe cutter*
Welder and nitrogen gas
cylinder
Refrigerant charging scale
Vacuum gauge or thermistor
vacuum gauge and vacuum
valve
Charging cylinder
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
* Follow the instructions below to prevent abrasive components contained in sandpaper and cutting tools from entering
the refrigerant circuit because those components can cause failures of the compressor and valves.
• To deburr pipes, use a reamer or other deburring tools, not sandpaper.
• To cut pipes, use a pipe cutter, not a grinder or other tools that use abrasive materials.
• When cutting or deburring pipes, do not allow cutting chips or other foreign matters to enter the pipes.
• If cutting chips or other foreign matters enter pipes, wipe them off the inside of the pipes.
OCH790 _6
Use
Air purge, refrigerant charge Tool exclusive for R410A
and operation check
Tool exclusive for R410A
Gas leak check Tool for HFC refrigerant
Refrigerant recovery Tool exclusive for R410A
Refrigerant charge Tool exclusive for R410A
Apply to flared section Ester oil, ether oil and
alkylbenzene oil (minimum
amount)
Prevent compressor Tool exclusive for R410A
malfunction when charging
refrigerant by spraying liquid
refrigerant
Prevent gas from blowing out Tool exclusive for R410A
when detaching charge hose
Vacuum drying and air purge Tools for other refrigerants
can be used if equipped with
adopter for reverse flow
check
Flaring work of piping Tools for other refrigerants
can be used by adjusting
flaring dimension
Bend the pipes Tools for other refrigerants
can be used
Cut the pipes Tools for other refrigerants
can be used
Weld the pipes Tools for other refrigerants
can be used
Refrigerant charge Tools for other refrigerants
can be used
Check the degree of Tools for other refrigerants
vacuum. (Vacuum valve can be used
prevents back flow of oil and
refrigerant to thermistor
vacuum gauge)
Refrigerant charge Tool exclusive for R410A
R410A tools Can R22 tools be used ?
( Usable if equipped with
adopter for reverse flow)
( Usable by adjusting
flaring dimension)
Can R407C tools be used ?
Ester oil, ether oil:
Alkylbenzene oil: minimum
amount
( Usable if equipped with
adopter for reverse flow)
( Usable by adjusting
flaring dimension)
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