Haier CA0100MANB Installation, Operation And Technical Manual page 36

MAINTENANCE
a. Before replacing any component of the refrigeration circulation, make sure the refrigerant has been
evacuated from both the high side and the low side of the unit. The control elements of refrigeration system
are highly sensitive and they must be handled very carefully if a replacement is required. Make sure they
are not overheated during the welding process by protecting them with wet cloth. The parts should not be
exposed to the oxyacetylene flame directly.
b. If needing to replace the refrigerant of the unit, its quantity shall be in accordance with the data
on the nameplate. Before replacing, the previous gas must be released as empty as possible.
c. During operation, all the panels must be installed properly, including the panel on the control
box.
d. If it must cut the pipes of the refrigerant circuit, the pipe cuter must be used, do not use the
tools that will produce copper scraps. All the pipes of the refrigerant circuit are copper pipes special for
cooling.
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HAIER CHILLER