6.11.2. Measurement device used for refrigerant insertion
Measurement device for R407C is not compatible with that for R22 due to the following reasons, therefore,
do not divert them. These devices should be controlled separately to avoid being mixed.
Measurement device Reasons Remarks
Pressure-proof criteria is different
Material spec. of packing is different
(question of deterioration)
If R22 is mixed, sludge is occurred due to
the fl ow of mineral oil to devices, which
may cause a clogging of cycle or accident
Pay special attention not to use a hose for
Pay special attention not to use a hose for
It is possible to change the composition
when putting from refrigerant tank to
Under studying the handling.
Detection method is different
Sensor of conventional detector of gas
leakage is very low, and practically it is
6.11.3. Procedure for refrigerant insertion
R407C should be added in liquid state.
The specifi cation of connection screw is different from measurement device for R410A.
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