How to use AC gauges and check refrigerant level in 6 min Easy instructions for Beginners and DIYers
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飽和冷媒温度の基礎、P/Tチャート、ゲージセットの見方!
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R-22 および R-410A エアコンの使用圧力!料金を確認中!
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How to Check AC Gas (Refrigerant) Pressure? | Animation | HVAC