Wotech refrigerant charge equipment is calibrated frequently by official measuring bureau and marked with green stickers on all the measuring components.
There are 2 different refrigerant charge system inside R407c and R410a.
There are scale indication calibrators which enable it to make sure at different ambient temperature the right volume is charged.To make sure the refrigerant always work well after charging the refrigerant by this equipment the first unit of same model of the order will be checked the volume by electronic weight. If the volume is correct production will be proceeded on the rest heat pump.
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