Trailer & Rail Refrigeration

ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

I

O

START/RUN

OFF

OPERATOR’S MANUAL
for

X2 SERIES
Trailer & Rail Refrigeration Units
With APX Control System
TM

62-11547 Rev B

OPERATOR’S
MANUAL
for

X2 SERIES
Trailer & Rail Refrigeration Units
TM

With APX Control System

©2014 Carrier Corporation D Printed in U. S. A. December 2014

TABLE OF CONTENTS
Page

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Identification . . . . . . . . . . . . . . . . . . . . . . . . .
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Screens . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IntelliSett . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Messages . . . . . . . . . . . . . . . . . . . . . .
Pretrip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Setpoint . . . . . . . . . . . . . . . . . . . . . . .
Start-Stop or Continuous Operation . . . . . . . .
Data Recorder/Trip Start . . . . . . . . . . . . . . . . . .
Manual Defrost . . . . . . . . . . . . . . . . . . . . . . . . . .
Language Selection . . . . . . . . . . . . . . . . . . . . . .
Unit Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
View Hour Meters . . . . . . . . . . . . . . . . . . . . . . . .
Stopping Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emergency Bypass Mode . . . . . . . . . . . . . . . . .
Pretrip Inspection . . . . . . . . . . . . . . . . . . . . . . . .
Product Loading . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Transport Temperatures . . . .
General Troubleshooting . . . . . . . . . . . . . . . . . .
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule . . . . . . . . . . . . . . . . . . . .
Priming Fuel System . . . . . . . . . . . . . . . . . . . . .
Emergency Road Service . . . . . . . . . . . . . . . . .

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5
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62−11547

INTRODUCTION
This guide has been prepared for the operator of a Carrier Transicold
X2t Series Trailer or Rail refrigeration unit with APXt Control System.
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 this Carrier Transicold unit.
This 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 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 this unit and to provide
general assistance when needed. More comprehensive information
can be found in the Operation & Service Manual for this unit. This
manual can be obtained from your Carrier Transicold dealer.
When having this 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, specifications may
change without notice.

1

62-11547

UNIT IDENTIFICATION
Each unit is identified by a decal attached to the frame of the unit inside
the roadside side door. This decal is on the bottom vertical frame next
to the display. The decal identifies the model number of the unit, the
warranty ID number, the serial number, the type of refrigerant and
refrigerant charge.
If a concern arises, please refer to the information on this decal, and
make a note of the model and serial number before calling for
assistance. This information will be needed when you contact an
authorized Carrier Transicold Dealer so that they may properly assist
you.

Nameplate
Athens Ga.
Model Name:
Serial No:
Model No:
Warranty ID:
Refrigerant:
Standby:
Max. Op. Press.

X2 2100APX
NAH91244625
NDL234N0-AF-A
710548
R404A 20 Lbs.
LP: 100psig/HP: 465psig

MONTHS
MONTH
Unlim 6000
1 2 3
Basic Unit
12
Engine
24
36
4 5 6
Compressor
24
36
7 8 9
Elec. Step. Vlv.
24
36
10 11 12
Refer. Coils/Rad
24
36
Solenoid Valves
24
36
YEAR
Microprocessor
24
36
2011
Gear Box
24
36
2012
Fan Shaft
24
36
2013
Fuel Pumps
24
36
2014
Standby Motor
Unlim - Parts & Labor, Unlimited Hours
6000 - Parts & Labor, 600 Hour Limit
COMPONENT

DATE IN SERVICE
DAY
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31
Made In USA

62-11547

2

SAFETY

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 inspection/
servicing by properly trained personnel only.
This Carrier Transicold refrigeration unit 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 any inspection or
servicing with the doors open you may be exposed to moving parts;
please stay clear of all moving parts when the unit is in operation.
NOTE TO TECHNICIANS
Refer to the Operation & Service Manual for a complete list
of safety precautions.

AUTO-START
This refrigeration unit is equipped with Auto-Start in both Start-Stop and
Continuous Operation. The unit may start at any time. A buzzer will
sound for 5 seconds before the unit is started. When performing any
check of the refrigeration unit (e.g., visually checking belts, checking
the oil), place unit in Inspect Mode and disconnect the starter solenoid
connector.

COOLING SYSTEM
The engine is equipped with a pressurized cooling system including a
pressurized coolant bottle. 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 coolant system; if the cap must be removed, cover it with
a rag and remove very slowly in order to release the pressure without
spray.

REFRIGERANT
The refrigerant contained in the refrigeration system of this 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) we recommend that you contact your
nearest Carrier Transicold authorized repair facility whenever service
of the refrigerant system is required.

BATTERY
This unit may be equipped with 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.
3

62-11547

STARTING UNIT

ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

START/STOP

DIESEL

36 .2

BOX TEMPERATURE 5F

COOL

36

SETPOINT 5F

STATUS OK

I
O

3

START/RUN
OFF

1

4

WARNING
Under no circumstances should ether or any
other starting aids be used to start the engine.

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 inspection/servicing by
properly trained personnel only.

62-11547

6

INSPECT MODE
Inspect Mode provides an additional layer of safety for operators
and technicians. Inspect Mode should be used during all pretrip
inspections of the unit.
Inspect Mode is a user activated feature that forces the unit to
shutdown and remain in shutdown regardless of operating state.
After unit inspection, Inspect Mode must be manually disabled, at
which point the unit will resume standard operation.
Inspect Mode is not a substitute for proper Lockout/Tagout
procedures, which are always required when servicing the unit.

ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

START/STOP

DIESEL

36.2

BOX TEMPERATURE 5F
INSPECT
MODE

1

COOL

36

SETPOINT 5F
EXIT

2

Enter Inspect Mode:
1. With the system powered up (START/RUN-OFF switch in the
START/RUN position) press the MENU key until INSPECT
MODE is displayed.
2. Press the INSPECT MODE soft key, the unit will shut down.

62-11547

8

INSPECT MODE - CONTINUED
While the unit is in Inspect Mode the ALARM light will flash, and the
display will indicate that unit operation, including temperature
control, has been disabled.

Exit Inspect Mode:
3. While the unit is in Inspect Mode, the EXIT soft key will be
available, all other keys and functions will be locked out.
4. Press the EXIT soft key to disable Inspect Mode, the unit will
resume standard operation.

ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

START/STOP
DIESELCONTROL
COOL
NO
TEMPERATURE
INSPECT MODE
OPERATIONS DISABLED
Press EXIT to return to normal
operation
BOX TEMPERATURE
5F
SETPOINT 5F

36.2

EXIT
TECH
MODE

36

EXIT

INSPECT
MODE

4

9

62-11547

STOPPING UNIT
ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

START/STOP

DIESEL

36.2

BOX TEMPERATURE 5F

COOL

36

SETPOINT 5F

STATUS OK

I

START/RUN

O

OFF

To stop the unit, place the START/RUN-OFF switch in the
OFF position. The unit will shut down immediately while the
system completes a shut down sequence and then the
display will go blank.
NOTES
The system will close the compressor suction modulation
valve (CSMV) before turning off.
Due to internal processing, turning the START/RUN - OFF
switch OFF then back to the START/RUN position will result
in a 4 to 50 second delay between the display going off and
coming back on again.

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 inspection/
servicing by properly trained personnel only.

62-11547

30

EMERGENCY BYPASS MODE
In the event of an alarm caused by a failure of the display module,
the refrigeration unit will go into shutdown. In order to temporarily
bypass this shutdown state, Emergency Bypass Mode can be
activated.
Once Emergency Bypass Mode has been activated, the
refrigeration unit will operate normally for 24 hours, a countdown
timer will be shown on the display. This 24 hour window of operation
will keep the load safe, and provide enough time to contact the
nearest Carrier Transicold Service Center for repair of the unit.
ALARM

START/STOP
CONTINUOUS
DEFROST

MENU

START/STOP

DIESEL

36.2

BOX TEMPERATURE 5F
INSPECT
MODE

COOL

36

SETPOINT 5F

BYPASS
MODE

EXIT

1

2

Enter Emergency Bypass Mode:
1. When the refrigeration unit is in a shutdown state due to the
display module alarm, press the MENU key until BYPASS
MODE is displayed.
2. Press the BYPASS MODE soft key, the unit will resume
operation until Emergency Bypass Mode is disabled, or after 24
hours of unit operation in Emergency Bypass Mode.

Exit Emergency Bypass Mode:
3. Press the MENU key until the EXIT BYPASS soft key is
displayed.
4. Press the EXIT BYPASS soft key, the refrigeration unit will shut
down. Once Emergency Bypass Mode is turned off, it cannot be
restarted and the unit will remain in shutdown until it is repaired.
After repairs have been made and the display module alarm has
been cleared, the unit will operate normally and Emergency Bypass
Mode will no longer be available.
31

62-11547