4.
Tools
1.
Required Tools for
R32
Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary,
etc. Accordingly, the tools to be used are classified into the following three types.
1)
Tools exclusive for
R32
(Those which cannot be used for conventional refrigerant (R22))
2)
Tools exclusive for
R32
but can be also used for conventional refrigerant (R22)
3)
Tools commonly used for
R32
and for conventional refrigerant (R22)
The table below shows the tools exclusive for
R32
and their interchangeability.
Tools exclusive for
R32
(The following tools for R
32
are required.)
Tools whose specifications are changed for
R32
and their interchangeability
(Note)
When flaring is carried out for
R32
using the conventional flare tools, adjustment of
projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1) Vacuum pump. Use vacuum pump by
attaching vacuum pump adapter.
7) Screwdriver (+, –)
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Also prepare the following equipments for other installation method and run check.
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No.
Used tool
Flare tool
Copper pipe gauge for
adjusting projection margin
Torque wrench
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Usage
Pipe flaring
Flaring by conventional
flare tool
Tightening of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
R32
air conditioner installation
Existence of
Whether conven-
new equipment
tional equipment
for R
32
can be used
Yes
*(Note)
Yes
*(Note)
Yes
No
Yes
No
Yes
No
Yes
Yes
Yes
No
Yes
No
Conventional air
conditioner installation
Whether conventional
equipment can be used
Yes
*(Note)
No
No
Yes
Yes
No
Yes
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