Carrier Supra Series User manual

Operator’s Manual
Supra Series
TruckRefrigeration Units
62-12002
Rev C
TM

Operator Manual
for
Supra Series
Truck Refrigeration Units
© 2020 Carrier Corporation ●Printed in USA April 2020

62-12002
TABLE OF CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. UNIT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. PRE-TRIP INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. STARTING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. PRE-TRIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7. CHANGING SETPOINT . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8. START/STOP OPERATION . . . . . . . . . . . . . . . . . . . . . . . 11
9. CONTINUOUS RUN OPERATION . . . . . . . . . . . . . . . . . . 13
10. MANUAL DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11. CITY SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
12. FUNCTION CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13. UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14. ALARM BUZZER AND RESET . . . . . . . . . . . . . . . . . . . . 26
15. STOPPING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . 27
16. PRODUCT LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
17. PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
18. FUSE AND RELAY LOCATIONS . . . . . . . . . . . . . . . . . . 32
19. UNIT MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
20. UNIT MAINTENANCE SCHEDULE . . . . . . . . . . . . . . . . 35
21. STANDBY OPERATION GUIDELINES . . . . . . . . . . . . . 39
22. EMERGENCY ROAD SERVICE . . . . . . . . . . . . . . . . . . . 40

1 62-12002
1. Introduction
This guide has been prepared for the operator of Carrier Transicold diesel
truck refrigeration units. It contains basic instructions for the daily
operation of the refrigeration unit, as well as safety information,
troubleshooting tips and other information that will help you to deliver the
load in the best possible condition. 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 Transicold Supra Series unit.
Your refrigeration unit has been engineered to provide long, trouble-free
performance when it is properly operated and maintained. The checks
outlined in this guide will help to minimize over-the-road problems. In
addition, a comprehensive maintenance program will help to ensure that
the unit continues to operate reliably. Such a maintenance program will
also help to control operating costs, increase the unit’s working life, and
improve performance.
This guide is intended to be an introduction to your unit and to provide
general assistance when needed. More comprehensive information can
be found in the Supra Series Operation and Service manual (62-11868),
which is available from your local Carrier Transicold dealer.
When having your unit serviced, be sure to specify genuine Carrier
Transicold replacement parts for the highest quality and best reliability.
At Carrier Transicold, we are continually working to improve the products
that we build for our customers. As a result, unit specifications may
change without notice.

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2. Unit Identification
2.1 Nameplate
Each Supra Series unit is identified by a nameplate attached to the frame.
This nameplate identifies the complete model number of the unit, the
serial number, the refrigerant charge and quantity, and the date the unit
was placed in service.
If a problem occurs, please refer to the information on this plate, and
make a note of the model and serial number before calling for assistance.
This information will be needed when you contact a technician for
assistance.
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3 62-12002
3. Safety
Your Carrier Transicold refrigeration unit has been designed with the
safety of the operator in mind. During normal operation, all moving parts
are fully guarded 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 and when the unit main power switch is in the RUN position.
WARNING
!
Unit may start automatically at any time even if the
switch is in the OFF position. Use proper lockout/tagout
procedures before inspection/servicing. All unit inspec-
tion/servicing by properly trained personnel only.
WARNING
!
Under no circumstances should ether or any other
starting aids be used to start the engine.
3.1 Auto-Start/Stop
Your refrigeration unit is equipped with Auto-Start/Stop, a valuable fuel
saving feature. When the unit is set for Auto-Start/Stop operation, it may
start at any time and without warning. When performing any check of the
refrigeration unit (e.g., checking the belts, checking the oil), make certain
that the main power switch is in the OFF position.
3.2 Engine Coolant
The engine is equipped with a pressurized cooling system. Under normal
operating conditions, the coolant in the engine and radiator is under high
pressure and is very hot. Contact with hot coolant can cause severe
burns. Do not remove the cap from a hot radiator. If the cap must be
removed, do so very slowly in order to release the pressure without spray.
3.3 Refrigerants
The refrigerant contained in the refrigeration system can cause frostbite,
severe burns, or blindness when in direct contact with the skin or eyes. For
this reason and because of legislation regarding the handling of refrigerants
during system service, we recommend that whenever this unit requires
service of the refrigeration system, you contact your nearest Carrier
Transicold authorized repair facility for service.
3.4 Battery
This unit utilizes a lead-acid type battery. A lead-acid battery normally vents
small amounts of flammable hydrogen gas. Do not smoke when checking the
battery. A battery explosion can cause serious physical harm and/or blindness.

62-12002 4
4. Pre-Trip Inspection
Perform a pre-trip inspection before picking up any load. This inspection
is essential to anticipate and help minimize the possibility of over-the-road
problems. These checks take only a few minutes.
WARNING
!
Inspect battery cables for signs of wear, abrasion or
damage at every pre trip inspection and replace if nec-
essary. Also check battery cable routing to ensure that
clamps are secure and that cables are not pinched or
chafing against any components.
1. Place the unit’s main switch in the STOP (0) position.
2. Fuel: Drain any water and impurities from the sump of the
refrigeration unit fuel tank by opening the drain-cock located on the
bottom of the tank (if so equipped). Close the valve when only pure
fuel emerges. Check the fuel level in the tank, ensuring that the fuel
supply is adequate for unit operation. Refuel if necessary.
3. Belts: Check the belt tension by using an
electronic belt tensioner .
Properly adjusted belts give long lasting and efficient service. Too
much tension shortens belt and bearing life, and too little tension
causes slippage and excessive belt wear. It is also important to keep
belts and sheaves free of any foreign material which may cause the
belts to slip.
4. Battery: On units equipped with serviceable batteries, check the
level of the electrolyte in each of the cells. If the level is low, add
distilled water to the correct level. Most units, however, are
equipped with low- or no-maintenance batteries, which must be
inspected to ensure that the connections are clean and tight. The
battery hold-down must also be checked to ensure it is tight enough
to keep the battery in place.
5. Engine Oil: The engine oil must be checked last as it is necessary
for oil to drain from the block and into the oil pan to obtain a correct
reading. Remove the dipstick, wipe it off and re-insert it fully into the
engine block. Once again, remove the dipstick and observe the oil
level, which normally falls between the full and add marks. If it falls
below the add mark, add oil until the level is correct.

5 62-12002
4. Pre-Trip Inspection (continued)
6. General Unit: Visually inspect the entire unit for leaks, loose bolts,
frayed, loose, or broken wires, etc. The radiator and condenser
coils of the unit must be free of dirt, bugs, cardboard, or any other
debris that may obstruct airflow across the coils. The evaporator
(located inside the body) must also be free of debris, especially
stretch-wrap, which is often used during transport to prevent cargo
shifting.
7. Truck Body: Inspect the truck body prior to loading. Check the
door and vent seals for damage and wear. Inspect the entire
interior and exterior of the body for damage, and check for damage
to the inner and outer skins of the body. Damage to the insulation
may compromise the unit’s ability to maintain the product
temperature by increasing the amount of heat gain across the truck
body.

62-12002 6
5. Starting the Unit
5.1 Starting the Unit - Road Operation
WARNING
!
Under no circumstances should ether or any other
starting aids be used to start the engine.
1. Place the I/O switch in the I position.
2. If the unit has been used previously in the Electric mode, press the
Road/Electric key to enable Road mode.
Under normal circumstances this is all that is required to start the unit.
• The Road mode icon will be displayed and the message
“ROAD” is displayed.
• The unit will perform a complete diagnostic check on the micro-
processor controller, pre-heat for the required amount of time
based on the engine temperature and start automatically.
1
2

7 62-12002
5.2 Starting the Unit - Standby Operation
WARNING
!
Make sure the power plug is clean and dry before con-
necting to any power source.
WARNING
!
Do not attempt to connect or remove power plug or per-
form service and/or maintenance before ensuring the
unit I/O switch is in the “O” position.
1. Place the I/O switch in the O position.
2. Connect the unit to the appropriate power source. (See table in
Standby Operation Guidelines Section)
3. Place the I/O switch in the I position.
4. Press the Road/Electric key to enable Electric mode.
1
3
4

62-12002 8
5.3 Starting the Unit - Standby Operation (Electric mode)
1. The Electric mode icon is illuminated and the message “ELEC” is
displayed.
2. If Electric mode is initiated but no power is available, “NO POWER”
is displayed.
3. The microprocessor will perform a self-test, and then setpoint and
box temperature will be displayed.

9 62-12002
6. Pre-Trip
Pre-Trip is a test sequence that the operator may initiate to check unit
operation. When Pre-Trip is enabled, the unit will enter a test sequence to
operate the unit in various operating modes.
1. Start and run the unit.
2. Press the Function key. “Pre-Trip N” will be enabled. Press the =
(Enter) key.
3. Press the up or down arrow until “Pre-Trip Y” is displayed. Press
the = (Enter) key to start the Pre-Trip.
The screen will display the status of the Pre-Trip test (“Test 1,”
Test 2,” etc.).
NOTE
If the conditions for Pre-Trip are not met, the unit will not
enter Pre-Trip and the display will return to its default display
2
1

62-12002 10
7. Changing Setpoint
Setpoints of -22°F to +95°F (-30°C to +30°C) may be entered via the
keypad.
1. With the default screen showing on the display, press the up or
down arrow keys to bring the setpoint to the desired reading. The
display will flash to indicate that the reading being displayed is a
non-entered value.
2. Press the = (Enter) key to activate the new setting. If the = (Enter)
key is not pressed after five seconds, the message “NO SP CHG”
is displayed for 10 seconds and all LEDs and icons flash. The dis-
play will revert to the previous active setting.
NOTE
The microprocessor retains the last entered setpoint in mem-
ory even if the unit is shut down or a power failure occurs.
NOTE
You cannot change a setpoint when in Pre-Trip or when view-
ing Unit Data or Functional Parameters
1
2

11 62-12002
8. Start/Stop Operation
• Auto-Start/Stop is provided to permit stopping / restarting the die-
sel-driven compressor as required. This gives the microprocessor
automatic control of starting and stopping the diesel engine.
• The main function of Auto-Start/Stop is to turn off the refrigeration
system near the setpoint to provide a fuel efficient temperature
control system and then restart the engine when needed.
• Start/Stop operation is normally used for frozen loads.
1. After start-up, check that the Auto Start/Stop mode Icon is illumi-
nated. If it is illuminated, the unit is already in the Auto Start/Stop
mode.
2. If it is not illuminated, press the Auto Start/Stop - Continuous key to
toggle the unit into Auto Start/Stop mode. The message “S/S ON”
is displayed.
Whenever the unit starts in Auto Start/Stop, it will run until:
• It has run for the predetermined minimum run time
• The engine coolant temperature is above 122°F (50°C)
• The box temperature is at setpoint
1 (Icon illuminated when Auto Start/Stop mode active)
2

62-12002 12
8. Start/Stop Operation (continued)
The controller will not shut off the engine if the battery voltage is not
sufficient to restart it. Battery voltage above approximately 13.4 volts is
required for shutdown. This varies depending on ambient. The control
system will calculate the equivalent voltage based on ambient.
The controller will restart the engine if any of the following criteria have
been met:
• Box temperature has changed by the selected override tempera-
ture DURING minimum off time
• Box temperature has moved away from setpoint by selected restart
temperature AFTER minimum off time
• The battery voltage drops below 12.2 VDC (Refer to Unit Data sec-
tion) or the selected voltage in configurations
• The engine coolant temperature drops below 34°F (1°C)
NOTE
Auto Start-Stop operation may be tied to the setpoint ranges
for frozen and perishable loads and the Auto Start/Stop -
Continuous key may be locked out.

13 62-12002
9. Continuous Run Operation
In the Continuous Run mode, the diesel engine will run continuously
providing constant air flow and temperature control to the product.
Continuous Run operation is normally used for perishable loads.
• After start up, check to see that the Auto Start/Stop mode icon is
not illuminated. If it is not illuminated, the unit is already in Continu-
ous Run mode.
• If it is illuminated, press the Auto Start/Stop - Continuous key to tog-
gle the unit into Continuous Run mode (unit will operate continu-
ously after starting). The message “CONT ON” is displayed.
NOTE
Continuous Operation may be tied to the setpoint ranges for
frozen and perishable loads and the Auto Start/Stop - Contin-
uous key may be locked out.
NOTE
The unit will remain in low speed for 10 minutes after engine
start-up when the Continuous Run setpoint is below 10°F (-
12°C).
1 (Icon turned off when Continuous Run mode active)
2

62-12002 14
10. Manual Defrost
Defrost is an independent cycle overriding cooling and heating function to
de-ice the evaporator as required.
1. Check that box temperature on the display is 40°F (4.4°C) or lower.
2. Press the Defrost key to initiate Manual Defrost.
If defrost is initiated successfully, the Defrost icon remains and “dF” is
displayed in the Box Temperature area for 10 seconds without box temp
and other icons. Then, the default display returns while the Defrost icon
and “dF” display remains for the duration of the defrost.
If defrost does not initiate, the Defrost icon turns off and “no dF” is
displayed in the Box Temperature area for 10 seconds without box temp
and other icons. Then, the default display returns along with a display of
box temperature.
Defrost may be terminated in any of three ways:
• Timer initiation
• Air switch initiation
• Manually
1
2
Defrost Indicator
Defrost Icon