haier AU282AHERA - Manual (Page 10)

Read Before Installation
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.
8
CAUTION!
Items to Be Checked
<1>. Verify the type of refrigerant used by the unit to be serviced.
Refrigerant Type: R410A
<2>. Check the symptom exhibited by the unit to be serviced.
Look in this sercice handbook for sympeoms relating to the refrigerant cycle.
<3>. Be sure to carefully read the Safety cautions 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.
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 )