Haier 1U25S2SQ1FA [20/54] Read before installation

Haier 1U25S2SQ1FA [20/54] Read before installation
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Содержание

Read Before Installation Items to Be Checked 1 Verify the type of refrigerant used by the unit to be serviced Refrigerant Type R32 2 Check the symptom exhibited by the unit to be serviced Look in this service handbook for symptoms relating to the refrigerant cycle 3 Be sure to carefully read the safety precautions at the beginning of this document 4 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 English Necessary tools for use with R32 Adaptability of tools that are for use with R22 and R407C 1 To be used exclusively with R32 Not to be used if used with R22 or R407C Tools Materials Use Notes Gauge Manifold Evacuating refrigerant charging 5 09MPa on the High pressure side Charging Hose Evacuating refrigerant charging Hose diameter larger than the concentional ones Refrigerant Recovery Equipment Refrigerant recovery Refrigerant Cylinder Refrigerant charging Write down the refrigerant type Pink in color at the top of the cylinder Refrigerant Cylinder Charging Port Refrigerant charging Hose diameter larger than the conventional ones Flare Nut Connecting the unit to piping Use Type 2 Flare nuts 2 Tools and materials that may be used with R32 with some restrictions Tools Materials Use Gas leak detector Detection of gas leaks Notes Vacuum Pump Vacuum drying May be used if a reverse flow check adaptor is attached Flare Tool Flare machining of piping Chages have been made in the flare machining dimension Refer to the next page Refrigerant Recovery Equipment Recovery of refrigerant May be used if designed for use with R32 The ones for HFC type refrigerant may be used 3 Tools and materials that are used with R22 or R407C that can also be used with R32 Tools Materials Use Vacuum Pump with a Check Valve Vacuum drying Bender Bending pipes Torque Wrench Tightening flare nuts Pipe Cutter Cutting pipes Welder and Nitrogen Cylinder Welding pipes Refrigerant Charging Meter Refrigerant charging Vacuum Gauze Checking vacuum degree Notes Only 12 70 1 2 and 15 88 5 8 have a larger flare machining dimension 4 Tool and materials that must not used with R32 Tools Materials Use Notes Charging Cylinder Refrigerant Charging Must not be used with R32 type units Tools for R32 must be handled with special care and keep moisture and dust from entering the cycle 17

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