Carrier Transicold Supra 550 User manual

MANUAL
OPERATOR’S
Supra 550, 650,
750, 850 & 950
TRUCK
REFRIGERATION
UNITS

CONTENTS
Page
Unit Identification 2..........................
Safety 3....................................
Pre-Trip Inspection 4.........................
Unit Operation 6............................
Starting the Unit -- Road Operation 6...........
Starting the Unit -- Standby Operation 7........
Starting the Unit -- Manual Operation 8.........
Pretrip Check 9.............................
Changing Setpoint 10........................
Start/Stop Operation 12......................
Continuous Run Operation 14.................
Manual Defrost 15...........................
City Speed 16...............................
Function Change 17.........................
Unit Data 19................................
Alarm Display and Reset 21..................
Stopping Unit 23............................
Product Loading 24..........................
Recommended Transport Temperatures 26.....
Problems 27................................
Troubleshooting 28..........................
Relay Board 30.............................
Unit Maintenance 32.........................
Unit Maintenance Schedule 34................
Standby Operation Guidelines 39..............
Emergency Road Service 40..................

1
SUPRA OPERATOR’S MANUAL
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 de-
liver the load in the best possible condition. Please take the time to
read the information contained in this booklet and refer to it when-
ever you have a question about the operation of your Carrier Tran-
sicold Supra unit.
Your refrigeration unit has been engineered to provide long,
trouble-free performance when it is properly operated and main-
tained. The checks outlined in this guide will help to minimize over-
the-road problems. In addition, a comprehensive maintenance pro-
gram will help to insure 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 as an introduction to your unit and to provide
general assistance when needed. More comprehensive informa-
tion can be found in the Operation and Service Manual for your unit.
This manual can be obtained 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 reli-
ability.
At Carrier Transicold, we are continually working to improve the
products that we build for our customers. As a result, unit specifica-
tions may change without notice.

2
UNIT IDENTIFICATION
Each Supra 50 Series unit is identified by a nameplate attached to
the frame near the accumulator. 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 or Carrier Transicold Service Engineer so that he or she
may properly assist you.
NAMEPLATE

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.
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.
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.
REFRIGERANTS
The refrigerant contained in the refrigeration system of your unit
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 your unit requires service
of the refrigeration system, you contact your nearest Carrier
Transicold authorized repair facility for service.
BATTERY
This unit utilizes a lead-acid type battery. The 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.

4
PRE-TRIP INSPECTION
The pre-trip inspection should be performed 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.
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 depressing the belt with your
thumb, near the center of the longest free run of each belt.
Under moderate pressure each belt should deflect
approximately 6 mm to 13mm (1/4 inch to 1/2 inch). If the belts
deflect more than this they should be tightened (loose belts
may slip, generating heat and reducing belt life). If the belts are
too tight they should be loosened; tight belts can reduce
bearing life.
3. Battery -- on units equipped with serviceable batteries, the level
of the electrolyte in each of the cells should be checked. If the
level is low, distilled water should be added to the correct level.
Most units, however, are equipped with low or no--maintenance
batteries. These should be inspected to ensure that the
connections are clean and tight, and the battery hold--down
should be checked for tightness.

MARKS ONLY
NO WORDING
5
5. Engine Oil -- the engine oil should
be checked last since 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 dip-stick and
observe the oil level; it should be
somewhere between the full and
add marks. If it is below the add
mark, add oil until the level is
correct.
6. Over-all Unit -- visually inspect the entire unit for leaks, loose
bolts, frayed, loose, or broken wires, etc. The radiator and
condenser coils of the unit should be free of dirt, bugs,
cardboard, or any other debris that may obstruct airflow across
the coils. The evaporator (located inside the body) should be
free of debris also, especially stretch-wrap, which is often used
during transport to prevent cargo shifting.
7. Truck body -- The body should be inspected prior to loading.
Check the door and vent seals for damage and wear. Inspect
the entire interior and exterior of the body for damage; 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.

6
UNIT OPERATION
STARTING THE UNIT -- ROAD OPERATION
WARNING
Under no circumstances should ether or any other
starting aids be used to start engine.
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
1. Place the I/O switch in the “I” position.
2. If unit was previously used in Standby
Mode, press the ROAD key.
Under normal circumstances this is all that is required to start the
unit. The unit will then perform a complete diagnostic check on the
microprocessor controller, pre-heat for the required amount of time
based on the engine temperature and start automatically.
Complete the Pre-Trip Inspection described in the previous section.

7
STARTING THE UNIT -- STANDBY OPERATION
WARNING
Make sure the power plug is clean and dry before con-
necting to any power source.
Do not attempt to connect or remove power plug or
perform service and/or maintenance before ensuring
the unit RUN/STOP Switch is in the STOP position and
the I/O switch is in the “O” position.
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
2. Connect unit to appropriate power source.
(See table on page 39)
4. Press Standby key.
1. Place the unit RUN/STOP switch in the
“STOP” position and the I/O switch in the “O”
position.
3. Place the unit RUN/STOP switch in the
“RUN” position and the I/O switch in the “I”
position.
Under normal circumstances this is all that is required to run the unit
in standby power. The unit will then perform a complete diagnostic
check on the microprocessor controller and start automatically.
Complete the Pre-Trip Inspection described in the previous section.

8
STARTING THE UNIT -- MANUAL OPERATION
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
MAN OP
1. Place unit RUN/STOP switch in RUN and I/O switch in “I”
position. (Manual Operation will only function if unit is in
Continuous Mode. If AUTO START/STOP indictor is
illuminated, press AUTO START/STOP toggle key to
place unit in Continuous Mode.)
2. Press FUNCTION key until AUTO OP or MAN OP is
displayed. If MAN OP appears, unit is already in Manual
Start Mode.
3. If AUTO OP appears, first press
ENTER key,
then UP or DOWN arrow key until MAN OP
appears.
Press ENTER key to lock in Manual Mode.
4. Place manual GLOW/CRANK switch in
GLOW and hold for 5 to 15 seconds. Then
place switch in CRANK position to
crank and start.
Control Box

9
PRETRIP CHECK
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
PPPP
1. Start and run unit until box temperature is
40_±5°F(4.4_±2.8°C).
2. Press PRETRIP CHECK key.
The PRETRIP key initiates a check of all normal operating modes.
Upon initiation, the unit will cycle through all operating modes at 30
second intervals. The display will show “PPPP” at the beginning
and will show various unit data during the pre-trip cycle. The final
PRETRIP mode is Defrost. When Defrost ends, PRETRIP will be
complete.
This is not a self-diagnosing pretrip test. No specific pretrip alarms
will be generated. Pretrip must be monitored by the user to verify
that the unit operates through all cycles.

10
CHANGING SETPOINT
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
Press ENTER key when desired setpoint is
displayed to lock in new setpoint.
New setpoint will flash and then return to original
setpoint if ENTER key is not pressed within 5
seconds.
Press UP or DOWN arrow key to increase or
decrease displayed setpoint.
-20 35° F

11
Setpoints of -22°Fto+89°F (-30°Cto+32°C) may be entered via
the keypad. The controller always retains the last entered setpoint
in memory. If no setpoint is in memory (i.e. on initial startup), the
controller will lock out the run relay and flash “SP” on the left hand
display until a valid setpoint is entered. The setpoint may be
changed up or down in 1°increments by pressing and releasing
either the UP ARROW or DOWN ARROW key.
You cannot change setpoint when unit is in Pretrip or when viewing
Unit Data or Functional Parameters.

12
START/STOP OPERATION
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
1. Check if AUTO START/STOP indicator
is illuminated. If not, press
AUTO START/STOP toggle key to
place unit in Start/Stop mode. AUTO
START/STOP will then be illuminated.
The AUTO START/STOP key is used to change the operating
mode from “Continuous Run” to “Auto Start/Stop.” Each push of the
key will alternate the operating modes. The Auto Start/Stop
indicator on the display will illuminate when Auto Stop/Start is
enabled. If the indicator is not illuminated, the unit is in the
Continuous Run Mode.
Automatic start/stop is provided to permit starting/restarting of the
diesel-driven compressor as required. This gives the
microprocessor automatic control of starting and stopping the
diesel engine. The main function of automatic 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. Refer to RECOMMENDED TRANSPORT TEMPERATURES (See Page
26).

13
Whenever the unit starts in Auto Start--Stop, it will run until:
SIt has run for the predetermined minimum run time.
SThe engine coolant temperature is above 122°F(50°C)
SThe box temperature is at setpoint.
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.
Look at battery voltage in data list to find out whether shutdown
voltage has been reached. If there is a “+” in front of the number,
the voltage is enough to shutdown and restart. If only the number
appears, the voltage is still too low for shutdown.
The controller will restart the engine if any of the following criteria
have been met:
SBox temperature has changed by ¦11°F(¦6.1°C)for setpoints
in the perishable range and +11°F(+6.1°C) for setpoints in the
frozen range DURING minimum off time.
SBox temperature has moved away from setpoint by ¦3.6°F
(2.0°C) AFTER minimum off time for setpoints in the perishable
range or +0.5°F(0.3°C) for setpoints in the frozen range.
SThe battery voltage drops below 12.2 Vdc Refer to Page 19 for
unit data).
SThe engine coolant temperature drops below 34°F(1°C).
To start the unit in manual start mode, the unit must be in continuous
run mode and the Auto/Manual Start Operation function parameter
set to “MAN OP” (FN10 OFF)
NOTE
When configuration CNF11 is “ON” and setpoint is 32 to
42_F(0to5.5_C) the unit is locked into continuous run.
The AUTO START/STOP key is disabled.
NOTE
Auto Start-Stop operation may be tied to the setpoint ranges for
frozen and perishable loads and the AUTO START/STOP key may
be locked out.

14
CONTINUOUS RUN OPERATION
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
1. Check if AUTO START/STOP indicator
is illuminated. If it is, press
AUTO START/STOP toggle key to
place unit in Continuous Run mode.
AUTO START/STOP indicator will not
be illuminated.
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. Refer to RECOMMENDED TRANSPORT TEMPERATURES
(See Page 26).
Continuous operation may be tied to the setpoint ranges for frozen
and perishable loads and the AUTO START/STOP key may be
locked out.

15
MANUAL DEFROST
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
1. Check that box temperature is 40_F(4.4_C) or
lower.
2. Press MANUAL DEFROST key to initiate
manual defrost.
The defrost mode may be initiated in three different ways if the
evaporator coil is below 40°F(4.4°C):
1. Defrost is initiated automatically at preset intervals by the
defrost timer in the microprocessor.
2. Defrost is initiated by the defrost air switch.
3. The defrost mode may be manually initiated by pressing the
Manual Defrost Key.
The defrost mode terminates when the evaporator temperature is
higher than 55°F (12.8°C). Should the defrost cycle not complete
within 45 minutes, the defrost cycle is terminated automatically by
the microprocessor.
After the 45 minute termination, the controller will wait 1.5 hours
before attempting another defrost cycle. Pressing the manual
defrost key will override this mode and start a defrost cycle.
If a shutdown alarm occurs, defrost will be terminated.

16
CITY SPEED
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
-20 35° F
1. Press the CITY SPEED key to
toggle between low speed only
and normal operating mode.
The CITY SPEED key enables the city speed mode of operation.
In the city speed mode, the unit will operate in low speed. Each push
of the key toggles the operating mode. The city speed indicator on
the display will illuminate when the city speed mode is enabled.

17
FUNCTION CHANGE
BOX TEMPERATURE
AUTO START/STOP
I
UNIT DATA
PRETRIP
ALARM/FAULT
STANDBYBUZZER OFF
MAN
DEFROST
CITY
SPEED
ROAD
FUNCTION ENTER
SETPOINT
O
i
1. Press FUNCTION key until Function to
be changed is displayed.
2. Press ENTER key.
3. Press either UP or DOWN ARROW key until
desired Function setting is displayed.
NOTE: Function changes will change operation
of unit. NOTE: If configuration CNF11 is “ON”
functional parameters are locked.
The ability to change any functional
parameters is disabled.
DEFR 12.0H
The Function Parameters control selected operating features of the
unit. When multiple choices are available, the display will show the
function description on the left side with the corresponding function
choice on the right side.
With a function parameter displayed, the data choice can be
changed by pressing ENTER then pressing either the up or down
ARROW keys. The displayed choice will then flash to indicate that
the choice has not been entered. Depress the ENTER key to acti-
vate the new choice. The display will stop flashing to indicate that
the choice has been entered.