H
OW IT
W
ORKS
:
W
ATER
-
COOLED
CONT
’
D
UGH017/0500
Series 1 Portable Chillers, PLC Control
D
ESCRIPTION
2-5
The liquid refrigerant
leaves the accumula-
tor, passing through the
thermal expansion valve,
where it expands and
cools.
4
Refrigerant circulation
The high pressure vapor travels from
the compressor through the coiled
condenser (where it is condensed into a
liquid) and is stored in the accumulator.
3
Vaporized refrigerant
travels from evapora-
tor to the compressor,
where the low pressure
vapor is compressed into
a high pressure vapor.
2
The evaporator extracts heat
from the process fluid, caus-
ing the refrigerant to vaporize
(evaporate) into a gas.
1
Cooled refrigerant is metered
back into the exaporator for
the cycle to begin again.
5
