Lontalk integration to ascend air-cooled chiller model acr (24 pages)
Summary of Contents for Trane Technologies Thermo King DSR-III VX-Series
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Diagnostic Manual DSR-III Vehicle Powered Truck Control System VX-Series Units Revision A T T K K 6 6 2 2 0 0 8 8 7 7 - - 1 1 8 8 - - O O D D - - E E N N May 2023...
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I I n n t t r r o o d d u u c c t t i i o o n n Revision History Revision A (Mar 2023) New manual format Control System Notes The following procedures must be followed when working on units equipped with microprocessor based control systems.
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I I n n t t r r o o d d u u c c t t i i o o n n How To Use This Manual Because not everyone is familiar with microprocessor based control systems, please take a few minutes to read this page.
Table of Contents S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s ..........................1 1 0 0 Danger, Warning, Caution, and Notice .
T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Cool Mode Operation (Single-Temperature Units) ..........29 Cool Mode Operation (Multi-Temperature Units).
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T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Initiating the Manual Defrost Cycle ............. . 61 Checking the Software Revision.
T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Component Description and Location ............70 Considerations .
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T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s H04A - Wiring Harness Continuity Test ............102 S S e e c c t t i i o o n n 7 7 - - D D S S R R I I I I I I B B a a s s e e C C o o n n t t r r o o l l l l e e r r I I n n f f o o r r m m a a t t i i o o n n .
Section 1 - Safety Precautions Danger, Warning, Caution, and Notice Thermo King® recommends that all service be performed by a Thermo King dealer and to be aware of several general safety practices. Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this unit depend upon the strict observance of these precautions.
S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s D D A A N N G G E E R R R R e e f f r r i i g g e e r r a a n n t t V V a a p p o o r r H H a a z z a a r r d d ! ! D D o o n n o o t t i i n n h h a a l l e e r r e e f f r r i i g g e e r r a a n n t t .
S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s G G a a s s e e s s ! ! D D o o n n o o t t u u s s e e a a H H a a l l i i d d e e t t o o r r c c h h .
S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s N N O O T T I I C C E E M M a a t t e e r r i i a a l l D D a a m m a a g g e e ! ! W W i i p p e e u u p p s s p p i i l l l l s s i i m m m m e e d d i i a a t t e e l l y y .
S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e w w / / C C a a p p a a c c i i t t o o r r s s ! ! B B e e c c a a r r e e f f u u l l w w h h e e n n w w o o r r k k i i n n g g w w i i t t h h e e l l e e c c t t r r i i c c a a l l c c i i r r c c u u i i t t s s t t h h a a t t c c o o n n t t a a i i n n c c a a p p a a c c i i t t o o r r s s .
S S e e c c t t i i o o n n 1 1 - - S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s First Aid R R E E F F R R I I G G E E R R A A N N T T •...
Section 2 - System Description Direct Smart Reefer Microprocessor Controller Block Diagrams The VX series has one configuration for all the platforms. N N o o t t e e : : Please review schematic diagram for detailed information. Figure 1. DSR III Microprocessor Controller Block Diagram: for Logic Board 2 and Power Board 1/2 Units TK 62087-18-OD-EN...
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n General Description Thermo King units that use the Direct Smart Reefer Microprocessor Control System (referred to, throughout the remainder of this manual, as a DSR Base Controller) are temperature-control units mounted on small and medium-...
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S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n microprocessor(s) receives output signals from the load compartment return air sensor(s).
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n N N o o t t e e : : See appropriate Wiring Diagram for Fuse values.
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S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n Table 1.
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n Table 4.
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S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n Remote Defrost Hot Gas Solenoid Valve (PS4) Remote Evaporator Fan 3 (EF3) Remote Evaporator Fan 4 (EF4)
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n System Fuses The following tables describe the fuses used to protect relays and other DSR Base Controller electrical components.
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n System Inputs N N o o t t e e : : Inputs are applicable for vehicles with a single temperature/main load compartment, or with multi-temperature/ main and remote load compartments.
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n System Outputs N N o o t t e e : : Outputs are applicable for vehicles with a single temperature/main load compartment, or with multi-temperature (main and remote load compartments).
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n N N o o t t e e : : Single temperature 10 and 20 model units use R-134a refrigerant;...
S S e e c c t t i i o o n n 2 2 - - S S y y s s t t e e m m D D e e s s c c r r i i p p t t i i o o n n C C o o m m p p r r e e s s s s o o r r c c o o o o l l i i n n g g c c a a p p a a c c i i t t y y c c o o n n t t r r o o l l s s o o l l e e n n o o i i d d v v a a l l v v e e ( ( r r e e v v e e r r s s e e c c y y c c l l e e a a n n d d s s o o m m e e S S P P E E C C T T R R U U M M u u n n i i t t s s ) ) - - Allows refrigerant gas to flow from the discharge line to the suction line in certain conditions to control the cooling capacity of the compressor.
Section 3 - Software Description Software Operation The software that operates the microprocessor contains a complex set of instructions. The microprocessor examines the conditions of all the inputs and compares them to the instructions contained in the software. The outputs are then energised, as required, by the software instructions.
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Once the final waiting period has concluded (determined by the day of each charge), the charge is activated.
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n and the evaporator fans in those compartments, switch on.
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n The startup of the evaporator fans is delayed for several seconds after Defrost mode ends, to prevent water from the melting ice from being sprayed on the load.
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Menu Flowcharts The following pages include flowcharts of the four DSR Base Controller menus, as viewed at the HMI.
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S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Menu Type Instructions (From Standard Display): Installation (Guarded Access) Menu...
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S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Figure 19.
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S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Figure 20.
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S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Figure 21.
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S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Figure 22.
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n See Chapter 4 (“Alarm Code Descriptions,”...
S S e e c c t t i i o o n n 3 3 - - S S o o f f t t w w a a r r e e D D e e s s c c r r i i p p t t i i o o n n Soft Start using Defrost Solenoids •...
Section 4 - Operation In-Cab Control Box (HMI) The In-cab Control Box (HMI) contains the Electronic Control System’s controlling (master) microprocessor, microprocessor software, LCD display screen, touch-sensitive function keys, and discrete electronic components. It is usually mounted on or above the truck instrument panel. The HMI is connected to the ECM by a cable that contains communications, power supply, and chassis/ground wires.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Enter Key: Executes menu screen actions or loads the setpoint temperature or other new settings. Buzzer: Sounds an audible warning whenever these events occur: When the vehicle battery and the optional Electric Standby power source are connected simultaneously When the load compartment doors are opened while the unit is operating.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Alarm Icon: Appears when an alarm condition has been detected by the microprocessor. Electric Icon: Appears when the unit is in Electric Standby mode.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n The Standard Display The Standard Display appears when the unit is turned on and no other functions have been selected. The return air temperature appears in the display.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Figure 29. Auto Start For Single Temperature Units, should a P P 1 1 E E alarm occur (return air temperature read error alarm code), —...
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Entering the Setpoint Temperature The Setpoint Temperature can be quickly and easily changed.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n N N o o t t e e : : If the Select or Enter key is not pressed within 20 seconds to select a new setpoint temperature, the unit continues to operate at the original Setpoint temperature.
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S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Figure 37. The Standard Display, showing the temperature only in compartment 1 c.
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S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Figure 40. 1 - 1 multi-temperature compartment selection Figure 41.
S S e e c c t t i i o o n n 4 4 - - O O p p e e r r a a t t i i o o n n Initiating the Manual Defrost Cycle I I m m p p o o r r t t a a n n t t : : Before initiating a manual defrost, ensure that the unit is not already in a defrost cycle.
Section 5 - Diagnostics DSR-III Diagnostics This section is devoted to diagnostic routines designed to help the technician quickly identify the cause of a problem and repair it, using the correct tools, information, and procedures. It is important that the required procedures be followed exactly.
S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s HP High Discharge Pressure This alarm indicates that the refrigerant discharge pressure, as sensed by the transducer, is excessively high.
S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s PSE High Pressure Sensor Fault This alarm code indicates that the signal from the HP sensor is outside of the readable range (<0.5 Vdc [at 0 psi] or >4.5 Vdc [at 500 psi])
S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s tCO Electronic Control Module Internal Temperature Exceeds Limit Alarm Type Auto (Auto Restart after Alarm is cleared)
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Corrective Actions as a Result of Other Symptoms (Vehicle Power) A problem with the unit might exist without generating an alarm code.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 10.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Unit Will Not Defrost Table 14.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 17.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 21.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Corrective Actions as a Result of Other Symptoms (Battery Driven) A problem with the unit might exist without generating an alarm code.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 25.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Unit Will Not Defrost Table 28.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 31.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Corrective Actions as a Result of Other Symptoms (Electric Standby Power) VX-Series A problem with the unit might exist without generating an alarm code.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 35.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Unit Not Heating Table 39.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Unit Will Not Defrost Table 43.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Table 45.
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S S e e c c t t i i o o n n 5 5 - - D D i i a a g g n n o o s s t t i i c c s s Condenser Fans Do Not Operate Table 50.
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Section 6 - Service Procedures A02A - Recording Existing Programmable Feature Settings P P u u r r p p o o s s e e : : To retrieve and record the sensor grades and programmable feature settings of the Controller. M M a a t t e e r r i i a a l l s s R R e e q q u u i i r r e e d d : : •...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Setup Sheet I I m m p p o o r r t t a a n n t t : : Not all features shown on the Setup Sheet may appear.
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Access Key Function Default Setting...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s A04A - Microprocessor Setup (Programming the DSR Microprocessor) P P u u r r p p o o s s e e : : This procedure should be followed to set the fixed running time hourmeters such as Total Hours, Total Run Time Hours,...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s A12A - ESD (Electrostatic Discharge) Procedure P P u u r r p p o o s s e e : : To prevent ESD (electrostatic discharge) damage while working on a microprocessor.
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s A28A - Setting Unit Running Time Hourmeters P P u u r r p p o o s s e e : : This procedure should be followed to set the unit running time hourmeters for [HC] (Remaining Hours Counter).
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s B02A - Printed Circuit Board Removal and Replacement P P u u r r p p o o s s e e : : This procedure should be followed when replacing Logic board LB1 or LB2, and power boards PB1 and/or PB2.
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s F06A - 2 Wire Magnetic Door Switch P P u u r r p p o o s s e e : : This information is used to install and wire the 3-wire magnetic door switch.
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s H02A - Deutsch Connector Repair Using Pigtail P P u u r r p p o o s s e e : : This procedure should be used to repair a broken pin in any of the Deutsch connectors used on the unit.
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s Step Action Result...
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S S e e c c t t i i o o n n 6 6 - - S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s H04A - Wiring Harness Continuity Test P P u u r r p p o o s s e e : : To illustrate the correct procedures for checking harness continuity on equipment utilizing solid state devices.
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Section 7 - DSR III Base Controller Information DSR-III Base Controller Software Features and Interchange To identify the software version used with the DSR-III Base Controller, refer to (“Checking the Software Revision,” p. 62). I I m m p p o o r r t t a a n n t t : : The software of a replacement microprocessor should always be checked to verify that it is the current software revision level.
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Section 8 - Diagrams Diagrams Index The following tables list the DSR-III control system schematic and wiring diagrams. The latest revisions are available to download from EMEA Infocentral or Asset Library. Table 54. Schematic Diagrams Drawing No. Title 4E23278 V400X, V500X, V600X 10/20/30/50, Single Temp and Spectrum Table 55.
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Thermo King – by Trane Technologies (NYSE: TT), a global climate innovator – is a worldwide leader in sustainable transport temperature control solutions. Thermo King has been providing transport temperature control solutions for a variety of applications, including trailers, truck bodies, buses, air, shipboard containers and railway cars since 1938.
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