4
T--326
U
NIT/
S
YSTEM
I
NFORMATION
1.1 WHAT IS AIR CONDITIONING
Air Conditioning is the cooling, heating, dehumidification, and
filtration of the air within the passenger compartment of a vehicle.
1.2 SPLIT SYSTEM
A Split System normally includes an Evaporator(s), a Condenser(s)
a Compressor(s) and interconnecting refrigerant hoses, fittings,
and electrical harnesses and controls. A listing of the system
components, along with specific data for each, is provided in
Paragraph 1.4.
1.3 SYSTEM DESIGNATIONS
Tie--In System --
Is a Carrier evaporator and condenser connected
to an existing OEM compressor and dash evaporator. The OEM
radiator type condenser is normally removed.
Max System --
A Carrier system installed along with an existing
OEM system. The systems operate independent of each other.
Stand--Alone (Standard) System --
All Carrier components
installed on a vehicle. These can be either single or dual
compressor systems.
1.4 SYSTEM COMPONENTS (Refer To Figure 1-1)
Return Air Thermostat/Sensor --
The system may be supplied
with a thermostat or thermistor. Both of these devices are
temperature sensitive components which when activated, signals
the Electro--Magnetic Clutch to engage/disengage. The return air
thermostat is normally located in the drivers control panel while the
return air thermistor is normally located in the return air flow of the
evaporator assembly.
Electro--Magnetic Clutch --
The Electro--Magnetic clutch controls
the operation of the compressor. When engaged, the compressor
circulates refrigerant and provides cooling.
Compressor --
The compressor is a belt driven, high--pressure
pump, which circulates the refrigerant through the evaporator and
condenser . The operation of the compressor is controlled by the
Electro--Magnetic clutch.
Condenser --
The condenser is normally located in the skirt or on
the roof of the vehicle. Its primary function is to reject heat, which
was transferred to the refrigerant by the evaporator from the
passenger compartment of the vehicle.
