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11. Tools used for refrigerant piping installations and services
Tools for R410A
Common with R32
Possibility of usage for R22
1.
Pipe cutters, reamers or scrapers
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○
2.
Flare tools (clutch type)
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○
3.
Torque wrench (1/4, 3/8)
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○
4.
Torque wrench (1/2, 5/8)
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×
5.
Manifold gauges
・
charging hoses
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×
6.
Vacuum pumps, vacuum pump adopters
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Connection
5/16
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Connection
1/4
7.
Electric gas leakage testers for HFC *1
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△
8.
Digital scale for refrigerant charging
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○
9.
HCF recovery devices (connection port 5/16) *2
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Connection
5/16
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Connection
1/4
10.
Refrigerant cylinders (pressure resistant: FC3)
Same specs
×
×
11.
Refrigerant cylinders (pink)
Other (colors that might subject to
change according to the
international standards).
×
12.
Refrigerant cylinder connection ports and packing
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×
13.
Allen wrench (4 mm) Electric knives
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○
*1
Those testers only for HCFC22 (R22), but not for HCF32 (R32) and HCF410A (R410A) cannot be for common use.
*2
Recovery devices which are self-certified for each HCF type can be used.
[Knowledge for the common usage of tools for R410A & R32]
R410A and R32 machines use different compressor oils.
If unregulated compressor oil gets mixed into, it may cause damage to the machine function.
Careful pump down will ensure the recovery of compressor oil, and it will minimize the remaining amount of the oil in the manifold
gauge and charging hose.
If you only perform the recovery of refrigerant and not be able to perform pump down, you have to dispose the compressor oil in
the charging hose.
[Precaution of repairing refrigerant cycle]
In the brazing, open 2-way and 3way valves, and make sure the refrigerant is completely recovered back and not remaining the
system.
When repairing outside, make sure no refrigerant is in the air, ensure good air flow, and perform the brazing.
[Inserting wrong refrigerant]
It may cause “not cooling” and “not heating” customer claims because each component (expansion valve, compressor, PCB) of the
refrigeration cycle is specially adjusted for R32.
At the same time, it is not subject to product warranty, if wrong refrigerant was inserted into the system.
