Haier AU282AHERA User Manual - Page 10

Read Before Installation Items to Be Checked . Verify the type of refrigerant used by the unit to be serviced. Refrigerant Type: R410A . Check the symptom exhibited by the unit to be serviced. Look in this sercice handbook for sympeoms relating to the refrigerant cycle. . Be sure to carefully read the Safety cautions at the beginning of this document. . If there is a gas leak or if the remaining refrigerant is exposed to an open flame, a noxious gas hydrofluoric acid may form. Keep workplace well ventilated. CAUTION! Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit. Chloride in some types of refrigerants such as R22 will cause the refrigerating machine oil to deteriorate. Necessary Tools and Materials Prepare the following tools and materials necessary for installing and servicing the unit. [Necessary tools for use with R410A(Adaptability of tools that are for use with R22 and R407C)] 1. To be used exclusively with R410A ( Not to be used if used with R22 or R407C ) Tools/Materials Gauge Manifold Charging Hose Refrigerant Recovery Equipment Refrigerant Cylinder Refrigerant Cylinder Charging Port Flare Nut Use Notes Evacuating,refrigerant charging 5.09MPa on the High-pressure side. Evacuating, refrigerant charging Hose diameter larger than the concentional ones. Refrigerant recovery Refrigerant charging Refrigerant charging Connecting the unit to piping Write down the refrigerant type. Pink in color at the top of the cylinder. Hose diameter larger than the conventional ones. Use Type-2 Flare nuts. 8