Carrier TRANSICOLD Integra 35X Operation manual

Operation and Service Manual
Integra 35X
Beginning with S/N PC710307
TruckRefrigeration Units
62-12023 Rev E

Operation and Service
For
Integra 35X
Beginning with S/N PC710307
Truck Refrigeration Units
© 2020 Carrier Corporation ● Printed in USA May 2020

Manual Revision History - 62-12023
Rev Date Reason for Release
09/29/2017 New product – new manual
A 05/23/2018 Updated unit description; wiring harness
B 10/12/2018 Page 2-7 section 2.6.2; Page 2-11, 2-12, 2-13 Add CPR back
into line (dlr)
C 10/24/2018 Updated path of flow drawings (pages 2-11, 2-12, 2-13);
removed reference to alarms A46 and A47 in several sections
(dlr)
D 4/28/2020 Updated covers and logo
E 5/8/2020 Section 2.3 – Remove ref to filter drier, change to drier/receiver;
Section 3.8 – updated configuration list; Sections 5.3, 5.3.1 –
Remove ref to filter drier; Section 5.5.2 – Remove step 4; Step
5.5.3 – Remove first sentence step 9;

i 62-12023
TABLE OF CONTENTS
PARAGRAPH NUMBER PAGE
SAFETY SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 GENERAL SAFETY NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 FIRST AID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 OPERATING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.4 MAINTENANCE PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.5 REFRIGERANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.6 SPECIFIC WARNING, CAUTION, AND NOTICE STATEMENTS . . . . . . . . . . . . . . . . . . . . . . 1-2
UNIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3 CONDENSING SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3.1 Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3.2 Hot Gas Solenoid Valve (HGS1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3.3 Condenser Pressure Control Valve (HGS2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.4 Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.5 Receiver / Drier Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.6 High Pressure Switch (HP1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.7 Condenser Pressure Control Switch (HP2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3.8 Standby Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4 EVAPORATOR SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4.1 Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4.2 Compressor Pressure Regulating Valve (CPR) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4.3 Defrost Termination Thermostat (DTT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4.4 Quench Valve (BPV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4.5 Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.4.6 Low Pressure Switch (LP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.5 SYSTEM OPERATING CONTROLS AND COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.6 UNIT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.6.1 Compressor Reference Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.6.2 Refrigeration System Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.6.3 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.7 TORQUES VALUES SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.8 REFRIGERANT CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.8.1 Refrigerant Circuit During Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.8.2 Refrigerant Circuit During Heat And Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.2 Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.3 Cab Command/Cab Command Two . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.4 Road Only - Cab Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.5 Road/Standby - Cab Command Two . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

62-12023 ii
3.2 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.2 Starting - Road Only Units - Cab Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.3 Starting - Road/Standby Units - Cab Command Two . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.4 Connect Power for Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.5 Start-Up Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.2.6 Minimum Shut-Down Time on Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.3 SETPOINT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.3.1 Road Only and Road/Standby Units - Cab Command and Cab Command Two . 3-8
3.4 DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.5 ALARM DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.5.1 Accessing Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.5.2 Low Battery Voltage Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.5.3 Clearing Past Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.6 CHECKING THE EPROM VERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.7 MODIFICATION OF FUNCTIONAL PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.7.1 Road Only Units - Cab Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.7.2 Road/Standby Units - Cab Command Two . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.8 MICROPROCESSOR CONFIGURATION - ROAD / STANDBY ONLY (CAB COMMAND TWO) . .
3-12
3.9 STOPPING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
TEMPERATURE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 Cooling Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Heating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.3 Frozen Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.2 DEFROST CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3 MINIMUM OFF TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 INSTALLING R-404A MANIFOLD GAUGE SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2.1 Preparing Manifold Gauge/Hose Set for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.2.2 Connecting Manifold Gauge/Hose Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.2.3 Removing the Manifold Gauge Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3 PUMPING DOWN OR REMOVING THE REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . 5-4
5.3.1 Pumping the Unit Down If Standby Is Available . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.4 REFRIGERANT LEAK CHECKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.5 EVACUATION AND DEHYDRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.5.2 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.5.3 Evacuation and Dehydration - Complete System . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.6 CHARGING THE REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.6.1 Checking the Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.6.2 Installing a Complete Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.7 CHECKING FOR NON-CONDENSABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.8 CHECKING AND REPLACING FILTER DRIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.8.1 Checking Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.8.2 Replacing the Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

iii 62-12023
5.9 HIGH, CONDENSER, AND LOW PRESSURE CONTROL SWITCH (HP1, HP2, LP) . . . . . . . 5-9
5.9.1 Removing Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.9.2 Checking Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.10 HOT GAS, CONDENSER, AND LOW PRESSURE CONTROL SWITCH (HGS1, HGS2, BPV) 5-
10
5.10.1 Replacing Solenoid Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5.10.2 Replacing Valve Internal Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5.11 ADJUSTING THE COMPRESSOR PRESSURE REGULATING VALVE (CPR) . . . . . . . . . . . 5-12
5.12 THERMOSTATIC EXPANSION VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5.12.1 Replacing Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5.12.2 Measuring Superheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5.12.3 Checking The TXV Orifice Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.13 COMPRESSOR OIL TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.14 DIAGNOSTIC TOOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.15 MICROPROCESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14
5.16 EVAPORATOR COIL CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.17 CONDENSER COIL CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 REFRIGERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.1 Unit Will Not Cool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.2 Unit Runs But Has Insufficient Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.3 Unit Operates Long or Continuously in Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.4 Unit Will Not Heat or Heating Insufficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.5 Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.2.6 Abnormal Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.2.7 Abnormal Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.2.8 Cab Command /Cab Command Two . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.3.1 Expansion Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.3.2 Hot Gas Solenoid or Condenser Pressure Regulating Valve . . . . . . . . . . . . . . . . . 6-6
6.3.3 Standby Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
ROAD ONLY 12VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
ROAD 12VDC 115V/1/60HZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
ROAD 12VDC 230V/1/60HZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
ROAD 12VDC 230V/3/60HZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX-1

1-1 62-12023
SECTION 1
Safety Summary
1.1 General Safety Notices
The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this
manual. They are recommended precautions that must be understood and applied during operation and mainte-
nance of the equipment covered herein. The general safety notices are presented in the following three sections
labeled: First Aid, Operating Precautions and Maintenance Precautions. A listing of the specific warnings and cau-
tions appearing elsewhere in the manual follows the general safety notices.
Your 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 all pre-trip inspections, daily inspec-
tions, and problem troubleshooting, you may be exposed to moving parts. Stay clear of all moving parts when the
unit is in operation and when the ON/OFF switch is in the ON position. No work should be performed on the unit
until standby and battery power supply is disconnected.
1.2 First Aid
An injury, no matter how slight, should never go unattended. Always obtain first aid or medical attention immediately.
1.3 Operating Precautions
• Always wear safety glasses. Wear hearing protection as required.
• Keep hands, clothing and tools clear of the evaporator and condenser fans.
• No work should be performed on the unit until all circuit breakers and the Emergency Switch are turned off,
and battery power supply is disconnected.
• Always work in pairs. Never work on the equipment alone.
• In case of severe vibration or unusual noise, stop the unit and investigate.
1.4 Maintenance Precautions
Beware of unannounced starting of the unit. This unit is equipped with Auto-Start in both the road and standby
modes. The unit may start at any time.
Be sure power is turned off before working on motors, controllers, solenoid valves and electrical control switches.
Tag circuit breaker and vehicle ignition to prevent accidental energizing of circuit.
Do not bypass any electrical safety devices, e.g. bridging an overload, or using any sort of jumper wires. Problems
with the system should be diagnosed, and any necessary repairs are performed by qualified service personnel.
When performing any arc welding on the unit or box, container, or trailer, disconnect all wire harness connectors
from the microprocessor. Do not remove wire harness from the modules unless you are grounded to the unit frame
with a static safe wrist strap. In case of electrical fire, extinguish with CO2(never use water).
1.5 Refrigerants
The refrigerant contained in 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 you contact your nearest Carrier Transicold authorized repair facility whenever your
unit requires refrigeration system service.

62-12023 1-2
1.6 Specific Warning, Caution, and Notice Statements
To help identify the label hazards on the unit and explain the level of awareness each one carries, an explanation is
given with the appropriate consequences:
DANGER
!
DANGER −warns against an immediate hazard which WILL result in severe personal injury or death.
WARNING
!
WARNING −warns against hazards or unsafe conditions which COULD result in severe personal
injury or death.
CAUTION
!
CAUTION −warns against potential hazard or unsafe practices which could result in minor personal
injury.
NOTICE
NOTICE −warns against potential product or property damage.
The statements listed below are specifically applicable to this refrigeration unit and appear elsewhere in this man-
ual. These recommended precautions must be understood and applied during operation and maintenance of the
equipment covered herein.
WARNING
!
Beware of unannounced starting of the unit. The unit may cycle the fans and one of the operat-
ing compressors unexpectedly as control requirements dictate. To ensure unit is without
power, remove power plug and remove battery negative cable.
WARNING
!
Do not attempt to connect or remove power plug before ensuring the unit is OFF (press OFF
key on Cab Command) and external power circuit breaker is open.
WARNING
!
The power plug must be clean and dry before connecting to any power source.
WARNING
!
Beware of V-belt and belt-driven components as the unit may start automatically.
WARNING
!
Do not use a nitrogen cylinder without a pressure regulator. (See Figure 5.4) Cylinder pressure
is approximately 2350 psi (160 Bar). Do not use oxygen in or near a refrigerant system as an
explosion may occur.

1-3 62-12023
CAUTION
!
Under no circumstances should anyone attempt to repair the microprocessor module or either
Cab Command module! Should a problem develop with these components, contact your near-
est Carrier Transicold dealer for replacement.
CAUTION
!
If starting unit for the first time after installation the compressor pressure regulating valve will
need to be reset (refer to Section 5.11).
CAUTION
!
If starting unit for the first time after installation or starting after adding/removing an optional
feature or if Owners operating parameters have changed the Configuration will need to be
reset.
CAUTION
!
To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suc-
tion pressure before disconnecting.
CAUTION
!
When working with refrigerant use safety glasses and gloves to avoid burns. Hoses and cop-
per tubing can be hot when unit is running.
CAUTION
!
Refrigerant R-404A is a blend. Charging as a vapor will change the properties of the refrigerant.
Only liquid charging through the king valve is acceptable.
CAUTION
!
Do not damage or over tighten the enclosing tube assembly. Also all parts must be placed in
the enclosing tube in proper sequence to avoid premature coil burn-out.

2-1 62-12023
SECTION 2
Unit Description
2.1 Introduction
WARNING
!
Beware of unannounced starting of the unit. The unit may cycle the fans and one of the operat-
ing compressors unexpectedly as control requirements dictate. To ensure unit is without
power, remove power plug and remove battery negative cable.
WARNING
!
Do not attempt to connect or remove power plug before ensuring the unit is OFF (press OFF
key on Cab Command) and external power circuit breaker is open.
This manual contains operating data, electrical data, and service instructions for the Carrier Transicold 35X truck
refrigeration units listed in Table 2–1.
2.2 General Description
The 35X unit (Figure 2.1) is of the split system type with the condenser mounted outside the truck body, evaporator
mounted in the body, and a Cab Command controller mounted in the drivers compartment. Two types of compres-
sor drives are available:
•Road operation: The compressor is driven by the engine of the vehicle when in operation over-the-road.
•Road/Standby operation: With the standby option a second compressor is mounted in the condenser sec-
tion. This compressor is driven by 115/1/60Hz or 230/1/60Hz or 230/3/60Hz power.
The control system is a microprocessor controller. Once the controller is set at the desired temperature, the system
automatically selects cooling and heating cycles as necessary to maintain the desired temperature within very
close limits.
The model/serial nameplate is located inside the unit on the frame as shown in Figure 2.1.
Table 2–1 Model Chart
Model Voltage R-404A Compressor
Road Only TRC135R03D 12V, No Standby
3.3 lb (1.5 KG) Series 150
Road and Standby TRS135R53D 115/1/60
Road and Standby TRS135R13D 230/1/60
Road and Standby TRS135R23D 230/3/60
Table 2–2 Additional Support Manuals
Manual
Number
Equipment Covered Type of Manual
62-12032 35X Parts List
62-10892 20X & 35X Road Only Truck Refrig-
eration Units with Cab Command
Controller
Operator’s Manual
62-11045 35X with Standby & 40/50X Truck
Refrigeration Units with Cab
Command Two Controller
Operator’s Manual

62-12023 2-2
Figure 2.1 Main Unit Components
2.3 Condensing Section
The condenser section (see Figure 2.2 ) contains the condenser fan and coil, receiver/drier, oil separator,
condenser pressure control valve, condenser pressure control switch, hot gas valve, high pressure switch and
microprocessor. On road/standby units the condenser also houses the standby compressor, control box and
rectifier/transformer assembly. In addition, single phase units are fitted with a start box which contains the capacitors
and relay.
2.3.1 Condenser Coil
The condenser is of the microchannel type and acts as a heat exchanger in which the compressed refrigerant gas
is condensed into a liquid and lowered in temperature. Air movement over the condenser is provided by a fan
mounted in the condensing section.
2.3.2 Hot Gas Solenoid Valve (HGS1)
HGS1 is normally closed and prevents discharge gas from entering the evaporator. The valve opens to allow hot
gas refrigerant to be delivered from the compressor to the evaporator during heat or defrost modes.
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2-3 62-12023
Figure 2.2 Condensing Section
1. Receiver
2. Filter Drier
3. Sight Glass
4. Frame Assembly
5. Standby Compressor
6. Microprocessor
7. Hot Gas Valve (HGS1) and Coil
8. Oil Separator
9. Condenser Coil
10. Condenser Pressure Control Valve (HGS2) & Coil
11. Rectifier
12. Transformer
- - - - -
46
7
8
9
10
1, 2, 3
Road Only
Road / Standby
1, 2, 3
8
7
10
9
45
12
11

62-12023 2-4
Figure 2.3 Evaporator
1. Evaporator Coil Assembly
2. Evaporator Fan Motor and Blowers (EFM)
3. Heat Exchanger
4. Defrost Termination Thermostat (DTT)
5. Quench Valve (BPV)
6. Low Pressure Switch (LP)
7. Orifice
8. Thermostatic Expansion Valve (TXV)
9. Compressor Pressure Regulating Valve (CPR)
10. Hot Gas Fitting
11. Road Suction Line Fitting
12. Standby Suction Line Fitting
13. Liquid Line Fitting
14. Liquid Line Check Valve
- - - - -
123
4
5
6
7, 8
9
13
12 11
10
14

2-5 62-12023
2.3.3 Condenser Pressure Control Valve (HGS2)
The condenser pressure control valve (or condenser closing valve) is a normally open valve that is powered when the
condenser pressure control switch (HP2) is closed. With the solenoid coil de-energized, the valve is in the cool mode
and the compressor discharge gas is delivered to the condenser. In the cool mode, heat is removed from the air
inside the truck body and rejected to the surrounding air. With the solenoid coil energized, the valve is in the heat
mode and the compressor discharge gas is diverted to the evaporator and rejected to the air inside the truck body.
2.3.4 Compressor
The compressor withdraws refrigerant gas from the evaporator and delivers it to the condenser at an increased pres-
sure. The pressure is such that refrigerant heat can be absorbed by the surrounding air at ordinary temperatures.
2.3.5 Receiver / Drier Assembly
Liquid refrigerant from the condenser is delivered to the receiver. The receiver serves as a liquid reservoir when
there are surges due to load changes in the system, as a storage space when pumping down the system and as a
liquid seal to prevent refrigerant gas from entering into the liquid line.
The drier is a cylindrical shell containing a drying agent and screen. The drier is installed in the liquid line and func-
tions to keep the system clean and remove moisture from the refrigerant.
2.3.6 High Pressure Switch (HP1)
HP1 is a normally closed switch which monitors the system for high pressure and shuts down the unit when pres-
sure rises above a predetermined setting. For HP1 settings see Section 2.6.2.
2.3.7 Condenser Pressure Control Switch (HP2)
HP2 is a normally open switch which closes to signal the microprocessor to activate the condenser fan. HP2 also
cycles the condenser pressure control valve (HGS2) and the quench valve (BPV) in addition to the condenser fan
in order to maintain discharge pressure for heating capacity. For HP2 settings see Section 2.6.2.
2.3.8 Standby Motor
The standby motor operates on nominal 115/230V-1ph-60Hz or 230V-3ph-60Hz power. An overload and short
cycle protection is provided along with automatic reset. Units are also equipped with a remote mounted power
receptacle.
2.4 Evaporator Section
The evaporator assembly (see Figure 2.1 and Figure 2.3) consists of two evaporator blowers, the evaporator coil,
thermostatic expansion valve, defrost termination thermostat, compressor pressure regulating valve, low pressure
switch and quench valve.
2.4.1 Thermostatic Expansion Valve (TXV)
The thermostatic expansion valve is an automatic device which controls the flow of liquid to the evaporator accord-
ing to changes in superheat of the refrigerant leaving the evaporator. The thermal expansion valve maintains a rel-
atively constant degree of superheat in the gas leaving the evaporator regardless of suction pressure. Thus, the
valve has a dual function; automatic expansion control and preventing liquid from returning to the compressor. For
TXV superheat settings see Section 2.6.2. To adjust the TXV, refer to Section 5.12.2.
2.4.2 Compressor Pressure Regulating Valve (CPR)
The CPR valve is installed on the suction line to regulate the suction pressure entering the compressor. The CPR
valve is set to limit the maximum suction pressure. For CPR settings refer to Section 2.6.2.
2.4.3 Defrost Termination Thermostat (DTT)
The defrost termination thermostat is a normally closed thermal switch which monitors setpoint. As the evaporator
cools to setpoint, the switch closes and signals the microprocessor that defrost may be initiated. The switch termi-
nates defrost by opening at a predetermined setpoint. For DTT settings refer to Section 2.6.2.
2.4.4 Quench Valve (BPV)
The quench valve is a normally closed solenoid valve controlled by the quench thermostat (BPT) mounted on the
road compressor discharge line. The valve allows metered liquid refrigerant to enter the suction line in the evapora-
tor in order to provide compressor cooling. For BPT settings refer to Section 2.6.2.

62-12023 2-6
2.4.5 Evaporator Coil
The evaporator is a tube and fin type. The operation of the compressor maintains a reduced pressure within the
coil. At this reduced pressure, the liquid refrigerant evaporates at a temperature sufficiently low enough to absorb
heat from the air. Air movement over the evaporator is provided by an electric fan.
2.4.6 Low Pressure Switch (LP)
The low pressure switch is a normally closed switch which signals the microprocessor to shut down the unit when
the system is outside the low pressure limit. For LP settings refer to Section 2.6.2.
2.5 System Operating Controls and Components
The unit is furnished with a microprocessor control system. Once the setpoint is entered at the Cab Command, the
unit will operate automatically to maintain the desired temperature within very close limits. See Section 3.1.1.
WARNING
!
Beware of unannounced starting of the unit. The unit may cycle the fans and one of the operat-
ing compressors unexpectedly as control requirements dictate. To ensure unit is without
power, remove power plug and remove battery negative cable.
CAUTION
!
Under no circumstances should anyone attempt to repair the microprocessor module or either
Cab Command module! Should a problem develop with these components, contact your near-
est Carrier Transicold dealer for replacement.
Figure 2.4 Cab Command - Road Only Units
Figure 2.5 Cab Command Two - Standby Units

2-7 62-12023
2.6 Unit Specifications
2.6.1 Compressor Reference Data
2.6.2 Refrigeration System Data
2.6.3 Electrical Data
a. Fan Motors
b. Standby Compressor Speed
1760 rpm - 60 hz
Model Series 150
Displacement 8.91 in3(147 cc)
No. Cylinders 6
Weight 9.68 lbs (4.4 kg)
Oil Charge 6oz (180 ml) - Road and Standby
Additional Oil Charge 4.23 oz (123 ml)
NOTE: Additional oil is only to be charged at installation
Approved oil POE - Mobil Arctic EAL 68 (Carrier Part Number 46-60002-02)
Defrost Timer Automatic triggering or at preset intervals: 0, auto, 1h, 2h, 3h, 4h, 5h, 6h
Defrost Termination
Thermostat (Standby
Only)
Opens at: 50 ± 5°F (27 ± 3°C); Closes at: 40 ± 5°F (22.2 ± 3°C)
High Pressure Switch
(HP1)
Cutout at: 465 ± 10 psig (32 Bar); Cut-in at: 360 ± 10 psig (25 Bar)
Condenser Pressure
Switch (HP2)
Cutout at: 245 ± 10 psig1(17 Bar); Cut-in at: 320 ± 10 psig (22 Bar)
Refrigerant Charge Refer to Table 2–1
Compressor Pressure
Regulating Valve (CPR)
30.5 ± 1 psig (2.1 Bar) @ 2400 rpm
Thermostat Expansion
Valve
Superheat at 32°F (0°C) Box, 14.5°F (8°C)
Superheat at 0°F (-20°C) Box, 7°F (4°C)
Low Pressure Switch
(LP)
Cutout at: 0 ±6 psig (0 Bar); Cut-in at: 14.5 ±3 psig (1 Bar)
Quench Valve Thermo-
stat (BPT)
Opens at: 220° ± 7°F (105° ± 4°C); Closes at: 248° ± 7°F (120° ± 4°C)
Evaporator Fan Motor (EFM) Condenser Fan Motor (CFM)
Bearing Lubrication Factory Lubricated Bearing Lubrication Factory Lubricated
Horse Power 100W 70W
Operating Amps 7-9 amps Operating Amps 7.5 amps
Speed 2100 rpm (rated) Speed 2350/2600 rpm

62-12023 2-8
c. Standby Motor Ratings
c. Road Compressor Clutch (CLHR) Coil
Amp Draw = 3.75A; Resistance = 3.2 Ω
d. Hot Gas Solenoid Valve (HGS1) Coil
Amp Draw = 1330 mAmp; Resistance = 10.1 Ω
e. Condenser Closing Valve (HGS2) Coil
Amp Draw = 1650 mAmp; Resistance = 7.2 Ω
f. Quench Valve (BPV) Coil
Amp Draw = 1160 mAmp; Resistance = 10.3 Ω
2.7 Torques Values Safety Devices
Voltage kW HP Contactor Data - MRA*
115/1/60Hz
1.5 2
23.2A
230/1/60Hz 11.7A
230/3/60Hz 8.9A
* MRA = Maximum Rotor Amps
Assembly Ft-Lbs N-m
Standby compressor platform 40 7.5
Standby motor platform 40 7.5
Standby motor pulley 40 7.5
Compressor pulley 22 29.8
Evaporator fan motor 13 17.6
Condenser - frame 18 24.4
Mounting bolts 44 to 60 8 to 11