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Page Title:
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.-Continued |
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 TM5-4120-383-14
1-6.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.-Continued
o
31
SOLENOID VALVE, LIQUID LINE. This valve is normally open
when the compressor is NOT running and is thermostatically
controlled during cooling cycles when operating in the COOL mode.
o
32 PRESSURE REGULATING VALVE. This valve regulates the suction
pressure by recirculating a part of the compressor discharge hot
gas to the suction line when the suction pressure drops below a
This action prevents frosting of the evaporator
preset value.
coil.
o
during cooling cycles when operating in the COOL mode.
o
34 EVAPORATOR COIL.
Similar in construction to the multiple-
tube, finned condenser coil. This coil serves as a heat exchanger
for the refrigerant to absorb heat from the room or enclosure air
circulated through the evaporator section.
o
Consists of two banks of heating elements.
Both banks operate
Only one bank operates in the "LOW HEAT" mode.
in the "HIGH HEAT" mode. One bank shuts off when the thermostat is
satisfied in both HIGH and LOW HEAT modes.
o
36
MIST ELIMINATOR. The purpose of the mist eliminator is to
trap droplets of condensed water from the evaporator, so that they
will not be blown into the air conditioned space.
The main power
INPUT POWER RECEPTACLE (ALTERNATE LOCATION).
See item 10 for primary location.
cable may be connected here.
See installation instructions for switch over instructions if this
power receptacle is used.
o
38
Visually indicates the condition of
REFRIGERANT SIGHT GLASS.
the refrigerant flowing in the refrigerant lines during cooling
cycles when operating in the COOL mode.
o
39
This hydraulic cylinder operates
ACTUATING CYLINDER.
It will start to open the louver
discharge louver assembly.
2
assembly at 150 to 180 psig (10.55 to 12.66 kg/cm ) and fully open
2
louver assembly at 220 to 260 psig (15.74 to 18.28 kg/cm )
compressor discharge pressure to allow unit operation when outside
temperature is low.
1-8
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