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Carrier Air 4 Life Manual

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Page 1

R
OPERATOR’S MANUAL
for
SPLIT SYSTEM
Bus Air Conditioning Units
T--326 Rev --
Transport Air Conditioning
TRANSPORT AIR CONDITIONING 

Page 2

OPERATOR’S
MANUAL
BUS AIR CONDITIONING
UNITS
GEN IV & GEN V 

Page 3

i
CONTENTS
Page
Introduction 1............................
Safety 3..................................
Unit/System Information 4.................
1.1 WHAT IS AIR CONDITIONING 4.............
1.2 SPLIT SYSTEM 4..........................
1.3 SYSTEM DESIGNATIONS 4................
1.4 SYSTEM COMPONENTS 4.................
1.5 MODEL AND SERIAL NUMBER TAGS 6......
1.6 SYSTEM REQUIREMENTS LABEL 8........
Unit Operation 9..........................
2.1 OPERATING INSTRUCTIONS 9.............
2.2 DRIVER’S CONTROL PANEL...

Page 4

1
INTRODUCTION
SPLITSYSTEMOPERATOR’SMANUAL
This guide has been prepared for the operator of Carrier Transport
Air Conditioning systems.It contains basic instructions for the daily
operation of the air conditioning systemas well as safety
information, and other information that will help you to maintain a
comfort level for your self and your passengers. Please take the
time to read the information contained in this booklet and refer to
it whenever you have a question about the operation of your Carrier...

Page 5

3T-- 326
SAFETY
Your Carrier Transport Air Conditioning system has been designed
with the safety of the operator in mind. During normal operation, all
moving parts are fully enclosed to help prevent injury. During all
pre-trip inspections, daily inspections, and problem
troubleshooting, you may be exposed to moving parts; please stay
clear of all moving parts when the unit is in operation.
WARNING
Beware of unannounced starting of the unit. The unit
may cycle the fans and operating compressor unex-...

Page 6

4 T-- 326
UNIT/SYSTEMINFORMATION
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...

Page 7

5T-- 326
Air In
Air OutAir In Air Out10
1 23
45 6 789
1. Compressor
2. Electro-- Magnetic Clutch
3. Discharge Line
4. Condenser
5. Filter Dryer/Sight Glass
Assembly6. Liquid Line
7. Evaporator
8. Block Valve (TXV)
9. Freezestat-- (Coil
freeze-- up thermostat)
10. Suction Line
Figure 1-1 Component Locations
Filter/Dryer --The filter/dryer removes moisture and particulate
matter from the refrigerant.
Expansion/Block Valve --Meters the refrigerant flow into the
evaporator coil. The majority of the Gen 4...

Page 8

6 T-- 326 Pressure Switch --The systems use high and low pressure
switches wired in series to control the power circuit of the
compressor clutch relay. If either pressure switch opens,
interrupting the circuit to the clutch relay, the operation of the
compressor will stop. When conditions return to normal the switch
will automatically reset and the compressor will resume operating.
The switches are non-- adjustable.
Freeze--Up Thermostat --Freeze-- up thermostats are used to
prevent ice formation on the...

Page 9

7T-- 326
Figure 1-3 Roof Mounted Condensers
EM-- 9 Location
Figure 1-4 Rear/Side Mounted Gen IV Evaporators
NOTE
The EM-- 9 evaporator data tag is located on the side of the
evaporator assembly, not between the blower assemblies.
Figure 1-5 Rear/Side Mounted Gen V Evaporators 

Page 10

8 T-- 326 1.6 SYSTEM REQUIREMENTS LABEL
The system requirements label (See Figure 1-6) is conveniently
located within the vehicle’s engine compartment. This label, when
properly completed by the installer, will give the servicing technician
the refrigerant and oil charge(s), evaporator(s), condenser(s), and
compressor(s) serial numbers, the drive belt(s) number, mount kit
number, the date of installation and the installer.
Figure 1-6 System Requirement Label 
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