15
Handling
Bef
ore
Operation
Part Names and Functions
Standard (–B, –C, 046)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(9)
(8)
Compressor
Condenser
Fan
(for condenser)
Electronic
expansion valve
Evaporator
Oil pump
Relief valve
Rubber hose
Sucks and compresses the low-temperature,
low-pressure gas refrigerant produced in the
evaporator, to produce high-temperature,
high-pressure gas.
Conducts heat exchange between the high-temperature,
high-pressure gas refrigerant produced in the
compressor and the air, to produce high-temperature,
high-pressure liquid refrigerant.
Forcefully blows air to accelerate heat exchange
between the refrigerant in the condenser and the air.
The valve mechanism reduces pressure of the
high-temperature, high-pressure liquid refrigerant
produced in the condenser, to produce low-temperature,
low-pressure liquid/gas mixed refrigerant.
Motor valve for
hot gas
The cooling capability of low load operation is
controlled by bypassing the refrigerant from the high
pressure side to the low pressure side.
Sucks oil from outside of the unit, and discharges it
from the unit through the evaporator.
Evaporates the low-temperature, low-pressure liquid
refrigerant produced in the electronic expansion valve by
conducting heat exchange between the refrigerant and oil,
to produce low-temperature, low-pressure gas refrigerant.
Limits the oil pump discharge pressure within a
specified level.
A part of the oil piping for suction and discharge of
the oil pump.
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
Air filter
Oil drain
(Evaporator)
Circuit breaker
(“–B” only)
High-pressure pressure
switch (“–C” only)
Compressor protection
thermostat (“–C” only)
Heater (“–H” only)
Transformer
(“–047, –048” only)
Oil tank
(“–T” only)
Located at the front of the condenser. It is intended
to prevent cooling capacity deterioration by
eliminating dust adhering to the condenser from the
air intake.
Drains oil from the evaporator when the Oil Cooling
Unit is re-located.
Oil drain
(drain pan)
The oil accumulated at the bottom of OILCON can
be discharged from here.
Tripped when high-pressure alarm is activated. It is
intended to protect the refrigerant system for the
condenser etc.
Tripped when compressor head high-temperature
alarm is activated. It is intended to protect the
compressor.
Tripped when over-current flows through the circuit.
It is intended to protect the internal electric wiring.
During warm-up in winter, the electric heater heats
up the oil to a preset temperature.
Intended for the different-voltage model.
Receives oil from the main machine oil piping
system. The oil tank can accept an
increase/decrease in oil quantity.
No.
Name
Function
No.
Name
Function
(10)
(13)
(12)
–T
(18)
(17)
–047, –048
(16)
–H
(5)
(6)
(11)
(9)
(8)
(1)
(2)
(4)
(3)
(7)
(14)
(15)
PIM00318A_EN.fm Page 15 Tuesday, October 26, 2010 12:37 PM
