Mitsubishi Electric PUZ-SWM60VAA Service Manual page 9

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 equipment Refrigerant recovery
Refrigerant cylinder Refrigerant charge
Prevent compressor malfunction
Safety charger when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
Charge valve
when detaching charge hose
Vacuum drying and air
Vacuum pump
purge
Flare tool Flaring work of piping
Bender Bend the pipes
Pipe cutter Cut the pipes
Welder and nitrogen gas cylinder Weld the pipes
Refrigerant charging scale Refrigerant charge
Check the degree of vacuum. (Vacuum
Vacuum gauge or
thermistor vacuum gauge valve prevents back flow of oil and
and vacuum valve
refrigerant to 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.
: Tools for other refrigerants can be used.
2-4. Choosing the outdoor unit installation location
OK
OK
OCH809A
R32 tools
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
Tools for other refrigerants
can be used if equipped with
adopter for reverse flow check
Tools for other refrigerants can be
used by adjusting flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
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
OK
Not Acceptable
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Can R22 tools be Can R407C tools
used? be used?
(Usable if equipped (Usable if equipped
with adapter for with adapter for
reverse flow) reverse flow)
(Usable by (Usable by
adjusting flaring adjusting flaring
dimension) dimension)
R32 is heavier than air—as well as other refrigerants—
so tends to accumulate at the base (in the vicinity of the
floor). If R32 accumulates around base, it may reach a
flammable concentration in case room is small. To avoid
ignition, maintaining a safe work environment is required
by ensuring appropriate ventilation. If a refrigerant leak is
confirmed in a room or an area where there is insufficient
ventilation, refrain from using of flames until the work
environment can be improved by ensuring appropriate
ventilation.
Install outdoor units in a place where at least one of the
four sides is open, and in a sufficiently large space with-
out depressions.
Can R410A tools
be used?
(Usable if equipped
with adapter for
reverse flow)
(Usable by
adjusting flaring
dimension)
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