SANY LATIN AMERICA
4-139
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
4.7.9 Evaporator
1) Expansion
valve
2) Evaporator
ZX215-1002148
1
2
4.7.10 Receiver tank
1) Inlet
2) Outlet
3) Receiver/dehydrator
4) Desiccant
Function
●
Temporary storage of refrigerant
●
Dehydration of refrigerant
●
Dust removal from refrigerant
●
Measure the volume of refrigerant
ZX215-1002149
1
2
3
4
Operating principle
●
The evaporator is a kind of heat exchanger
that looks like a condenser. Hot air in the
cab is conducted into the evaporator via
the blower motor and undergoes heat ex-
change with the surface of the evaporator.
Heat is absorbed and hot air turns into
cold air, which flows into the cab through
the air ducts. Evaporator surface absorbs
heat
→
Refrigerant in the evaporator ab-
sorbs heat
→
Refrigerant evaporates .
Evaporated refrigerant (gas) is absorbed
by the compressor.
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