Thermo King Rail Edition SLXi-DRC User manual

Revision B
August 2018 TTKK 5566443333--55--MMMM--EENN
Rail Edition
SLXi-DRC
Single Temperature Units
Maintenance Manual

©2020 Trane Te hnologies TK 56433-5-MM-EN
Introduction
This manual is published for informational purposes
only. Thermo King® makes no representations
warranties express or implied, with respe t to the
information re ommendations and des riptions
ontained herein. Information provided should not be
regarded as all-in lusive or overing all ontingen ies.
If further information is required, Thermo King
Corporation Servi e Department should be onsulted.
TThheerrmmoo KKiinngg’’ss wwaarrrraannttyy sshhaallll nnoott aappppllyy ttoo aannyy
eeqquuiippmmeenntt wwhhii hh hhaass bbeeeenn ““ssoo iinnssttaalllleedd,,
mmaaiinnttaaiinneedd,, rreeppaaiirreedd oorr aalltteerreedd aass,, iinn tthhee
mmaannuuffaa ttuurreerr’’ss jjuuddggmmeenntt,, ttoo aaffffee tt iittss iinntteeggrriittyy..””
MMaannuuffaaccttuurreerr sshhaallll hhaavvee nnoo lliiaabbiilliittyy ttoo aannyy ppeerrssoonn
oorr eennttiittyy ffoorr aannyy ppeerrssoonnaall iinnjjuurryy,, pprrooppeerrttyy ddaammaaggee
oorr aannyy ootthheerr ddiirreecctt,, iinnddiirreecctt,, ssppeecciiaall,, oorr
ccoonnsseeqquueennttiiaall ddaammaaggeess wwhhaattssooeevveerr,, aarriissiinngg oouutt ooff
tthhee uussee ooff tthhiiss mmaannuuaall oorr aannyy iinnffoorrmmaattiioonn,,
rreeccoommmmeennddaattiioonnss oorr ddeessccrriippttiioonnss ccoonnttaaiinneedd
hheerreeiinn.. TThhee pprroocceedduurreess ddeessccrriibbeedd hheerreeiinn sshhoouulldd
oonnllyy bbee uunnddeerrttaakkeenn bbyy ssuuiittaabbllyy qquuaalliiffiieedd ppeerrssoonnnneell..
FFaaiilluurree ttoo iimmpplleemmeenntt tthheessee pprroocceedduurreess ccoorrrreeccttllyy
mmaayy ccaauussee ddaammaaggee ttoo tthhee TThheerrmmoo KKiinngg uunniitt oorr
ootthheerr pprrooppeerrttyy oorr ppeerrssoonnaall iinnjjuurryy..
Revision History
Revision A (08/17) Original release
Revision B (08/18) Update R-404A to R-452A.
General Information
The maintenance information in this manual covers unit models:
System SLXi-DRC (903708)
For further information, refer to:
SLXi-DRC Operator’s Manual TK 56402
SLXi-DRC Parts Manual TK 56471
SR-3 Trailer Single Temperature SL-400e, SLX/SLXe/SLXi Series Diagnostic Manual TK 56487
SLXi-DRC Diagrams Manual TK 56504
SLXi-DRC Single Temperature Installation Manual TK 56403
TK482 and TK486 Engine Overhaul Manual TK 50136
X214, X418, X426 and X430 Compressor Overhaul Manual TK 6875
Diagnosing Thermo King Truck and Trailer Refrigeration Systems TK 5984
Tool Catalog TK 5955
Evacuation Station Operation and Field Application TK 40612
The information in this manual is provided to assist owners, operators and service people in the proper upkeep and maintenance of Thermo
King units.

TK 56433-5-MM-EN 3
Recover Refrigerant
NNoottee In the USA, EPA Section 608 Certification is
required to work on refrigeration systems. In the
EU, local F-gas Regulations must be observed
when working on refrigeration systems.
At Thermo King®, we re ognize the need to preserve
the environment and limit the potential harm to the
ozone layer that an result from allowing refrigerant to
es ape into the atmosphere.
We stri tly adhere to a poli y that promotes the
re overy and limits the loss of refrigerant into the
atmosphere.
When working on transport temperature ontrol
systems, a re overy pro ess that prevents or minimizes
refrigerant loss to the atmosphere is required by law. In
addition, servi e personnel must be aware of the
appropriate European Union, National, Federal, State,
and/or Lo al regulations governing the use of
refrigerants and ertifi ation of te hni ians. For
additional information on regulations and te hni ian
programs, onta t your lo al THERMO KING dealer.
SSeerrvvii ee TToooollss - Use the proper servi e tools. Gauge
manifold sets should in lude appropriate shutoff
valves or dis onne ts near the end of ea h servi e line.
RRee oovveerryy EEqquuiippmmeenntt - Re overy equipment must be
used. Proper re overing, storing and re y ling of
refrigerants is an important part of all servi e work.
SSeerrvvii ee PPrroo eedduurreess - Re ommended pro edures must
be used to minimize refrigerant loss.
CCoommppoonneennttss mmaayy bbee iissoollaatteedd by losing servi e
valves and performing system pump-downs.
CCoommppoonneennttss uunnaabbllee ttoo bbee iissoollaatteedd for servi e must
be repaired only after refrigerant is properly re overed.
Customer Satisfaction Survey
Let your voi e be heard!
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devi e with a web browser.
S an the Qui k Response (QR) ode or li k or type the
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om/jfe/form/SV_2o tfSHoUJxsk6x?Q_CHL=qr&Q_
JFE=qdg to omplete the survey.
IInnttrroodduu ttiioonn

4TK 56433-5-MM-EN
SSaaffeettyy PPrree aauuttiioonnss ................................................ 88
Danger, Warning, Caution, and
Noti e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
General Pra ti es . . . . . . . . . . . . . . . . . . . . . . . . . 8
Battery Installation and Cable
Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Battery Removal. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Refrigerant Hazards. . . . . . . . . . . . . . . . . . . . . . 10
Refrigerant Oil Hazards. . . . . . . . . . . . . . . . . . . 10
Ele tri al Hazards. . . . . . . . . . . . . . . . . . . . . . . . 10
Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mi ropro essor Servi e Pre autions . . . . . . 11
Welding Pre autions . . . . . . . . . . . . . . . . . . . . . 11
First Aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SSppee iiffii aattiioonnss .... .. ...... ...... ...... ...... ...... ...... ...... .. ...... 1133
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Belt Tension. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Refrigeration System . . . . . . . . . . . . . . . . . . . . 14
Ele tri al Control System. . . . . . . . . . . . . . . . . 14
Ele tri al Components . . . . . . . . . . . . . . . . . . . 15
MMaaiinntteennaann ee IInnssppee ttiioonn
SS hheedduullee .. ...... ...... ...... ...... ...... ...... ...... ...... ...... .. ...... .. 1166
UUnniitt DDeess rriippttiioonn.... .. ...... .. ...... .. ...... ...... ...... ...... ...... 1188
Unit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Design Features . . . . . . . . . . . . . . . . . . . . . . . . . 18
Diesel Engine . . . . . . . . . . . . . . . . . . . . . . . . 18
Thermo King X430 Series
Re ipro ating Compressor. . . . . . . . . . . . 18
Ele troni Throttling Valve . . . . . . . . . . . . 18
SMART REEFER 3 (SR-3) Control
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
CYCLE-SENTRY™ Start-Stop
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Data Logging . . . . . . . . . . . . . . . . . . . . . . . . 19
TK BlueBox . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CargoLink™ . . . . . . . . . . . . . . . . . . . . . . . . . 20
OptiSet Plus™ . . . . . . . . . . . . . . . . . . . . . . . 21
FreshSet™ . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Sequen e of Operation. . . . . . . . . . . . . . . . . . . 21
Operating Modes . . . . . . . . . . . . . . . . . . . . 21
Defrost ............................ 21
Engine Compartment Components. . . . . . . . 22
Unit Prote tion Devi es . . . . . . . . . . . . . . . . . . 22
Serial Number Lo ations . . . . . . . . . . . . . . . . . 22
EEllee ttrrii aall MMaaiinntteennaann ee .. ...... ...... ...... .. ...... .. ...... 2255
Alternator Diagnosti Pro edures . . . . . . . . . 25
General Information. . . . . . . . . . . . . . . . . . 25
Alternator Identifi ation . . . . . . . . . . . . . . 25
Base Controller Fuse F4. . . . . . . . . . . . . . . 25
Test Equipment for Che king Voltage
and Current. . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alternator Load Test . . . . . . . . . . . . . . . . . 26
General Diagnosti and Warranty
Evaluation Pro edure. . . . . . . . . . . . . . . . . 26
Field Current Test . . . . . . . . . . . . . . . . . . . . 27
Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Filler Cap Batteries . . . . . . . . . . . . . . . . . . . 27
Maintenan e Free Batteries . . . . . . . . . . . 27
Battery Load Test . . . . . . . . . . . . . . . . . . . . 28
Battery Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Base Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Base Controller Fuse Size &
Fun tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
FuseF10........................... 28
FuseF15........................... 29
LED Fun tions . . . . . . . . . . . . . . . . . . . . . . . 29
Smart FET Outputs . . . . . . . . . . . . . . . . . . . 29
SMART REEFER 3 (SR-3) Mi ropro essor
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fuse Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Air Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Unit Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Wire Harness Routing . . . . . . . . . . . . . . . . . . . . 30
EEnnggiinnee MMaaiinntteennaann ee ........ ...... .. ........ .. ...... ........ .. 3311
EMI 3000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Engine Lubri ation System . . . . . . . . . . . . . . . 31
Engine Oil Change . . . . . . . . . . . . . . . . . . . 31
Oil Filter Change . . . . . . . . . . . . . . . . . . . . . 31
Low Oil Pressure . . . . . . . . . . . . . . . . . . . . . 31
Engine Cooling System . . . . . . . . . . . . . . . . . . 32
Extended Life Coolant (ELC). . . . . . . . . . . 33
Ta le of Contents

TK 56433-5-MM-EN 5
Antifreeze Maintenan e
Pro edure . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Che king the Antifreeze. . . . . . . . . . . . . . . 33
Changing the Antifreeze . . . . . . . . . . . . . . 33
Bleeding Air from the Cooling
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Engine Thermostat . . . . . . . . . . . . . . . . . . . 34
Coolant Level Swit h . . . . . . . . . . . . . . . . . 34
Testing the Coolant Level Swit h . . . . . . . 34
Che king the Float . . . . . . . . . . . . . . . . . . . 35
Repla ing the Coolant Level
Swit h............................. 35
Engine Fuel System. . . . . . . . . . . . . . . . . . . . . . 35
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fuel Line Routing . . . . . . . . . . . . . . . . . . . . 35
Maintenan e . . . . . . . . . . . . . . . . . . . . . . . . 35
Fuel Return Line Repla ement. . . . . . . . . 37
Bleeding the Fuel System . . . . . . . . . . . . . 37
Draining Water from Fuel Tank . . . . . . . . 38
Fuel Pre-Strainer . . . . . . . . . . . . . . . . . . . . . 38
Fuel Filter/Water Separator . . . . . . . . . . . 39
Fuel Filter/Water Separator
Repla ement . . . . . . . . . . . . . . . . . . . . . . . . 39
Engine Speed Adjustments . . . . . . . . . . . 39
High Speed. . . . . . . . . . . . . . . . . . . . . . . . . 39
Low Speed . . . . . . . . . . . . . . . . . . . . . . . . . 39
Inje tion Pump Timing . . . . . . . . . . . . . . . 40
Inje tion Pump Removal. . . . . . . . . . . . . . 43
Inje tion Pump Reinstallation . . . . . . . . . 44
Fuel Solenoid . . . . . . . . . . . . . . . . . . . . . . . . 44
Testing the Fuel Solenoid . . . . . . . . . . . . . 45
Fuel Solenoid Repla ement . . . . . . . . . . . 46
Tro hoid Feed Pump . . . . . . . . . . . . . . . . . 46
Tro hoid Feed Pump Leaks. . . . . . . . . . . . 47
Tro hoid Feed Pump
Repla ement . . . . . . . . . . . . . . . . . . . . . . . 47
Cold Start Devi e . . . . . . . . . . . . . . . . . . . . 48
Che king Cold Start Devi e
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Cold Start Devi e Repla ement . . . . . . . . 48
Engine Valve Clearan e Adjustment. . . . . . . 49
Crank ase Breather . . . . . . . . . . . . . . . . . . . . . . 50
EMI 3000 Air Cleaner. . . . . . . . . . . . . . . . . . . . . 51
Belts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fan Drive Belt. . . . . . . . . . . . . . . . . . . . . . . . 52
Fan Drive Belt Repla ement . . . . . . . . . . . 52
Fan Drive Belt Adjustment . . . . . . . . . . . . 54
Engine/Cross Shaft Belt. . . . . . . . . . . . . . . 55
Assembly of Tensioner Clut h . . . . . . . . . 56
Engine/Cross Shaft Belt
Repla ement . . . . . . . . . . . . . . . . . . . . . . . 56
Water Pump Belt . . . . . . . . . . . . . . . . . . . . . 58
RReeffrriiggeerraattiioonn MMaaiinntteennaann ee ...... ...... ...... ...... .... 5599
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . 59
Testing The Refrigerant Charge With
An Empty Trailer . . . . . . . . . . . . . . . . . . . . . 59
Testing the Refrigerant Charge with
a Loaded Trailer . . . . . . . . . . . . . . . . . . . . . 59
Testing for an Over harge . . . . . . . . . . . . 59
Moisture Indi ating Sight Glass . . . . . . . . . . . 60
Refrigerant Leaks . . . . . . . . . . . . . . . . . . . . . . . . 60
Che king Compressor Oil . . . . . . . . . . . . . . . . 60
High Pressure Cutout Swit h
(HPCO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Three-Way Valve Condenser Pressure
Bypass Che k Valve. . . . . . . . . . . . . . . . . . . . . . 61
Ele troni Throttling Valve (ETV) . . . . . . . . . . 62
Pressure Transdu ers . . . . . . . . . . . . . . . . . . . . 63
Hot Gas Bypass Valve . . . . . . . . . . . . . . . . . . . . 63
RReeffrriiggeerraattiioonn SSeerrvvii ee OOppeerraattiioonnss .... .. ...... .. 6644
Refrigeration System Components . . . . . . . . 64
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Compressor Coupling Removal
(Standard Units) . . . . . . . . . . . . . . . . . . . . . 65
Compressor Coupling Installation
(Standard Units) . . . . . . . . . . . . . . . . . . . . . 66
Compressors with Pressurized Seal
Cavity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Hex Drive Compressor Seal
Repla ement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Dis harge Vibrasorber . . . . . . . . . . . . . . . . . . . 70
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 70
In-Line Condenser Che k Valve . . . . . . . . . . . 71
TTaabbllee ooff CCoonntteennttss

6TK 56433-5-MM-EN
Condenser Che k Valve
Repla ement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Bypass Che k Valve. . . . . . . . . . . . . . . . . . . . . . 71
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Re eiver Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Filter-Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Expansion Valve Assembly . . . . . . . . . . . . . . . 72
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Heat Ex hanger . . . . . . . . . . . . . . . . . . . . . . . . . 72
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Evaporator Coil Assembly . . . . . . . . . . . . . . . . 73
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 73
A umulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Three-Way Valve Repair. . . . . . . . . . . . . . . . . . 74
Removal/Disassembly . . . . . . . . . . . . . . . . 74
End Cap Che ks. . . . . . . . . . . . . . . . . . . . . . 75
Che k Valve Bleed Hole Diameter . . . . . . 75
Assembly/Installation . . . . . . . . . . . . . . . . 76
Three-Way Valve Condenser Pressure
Bypass Che k Valve Repair . . . . . . . . . . . . . . . 77
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Pilot Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Su tion Vibrasorber . . . . . . . . . . . . . . . . . . . . . 77
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 78
High Pressure Cutout Swit h . . . . . . . . . . . . . 78
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 78
High Pressure Relief Valve. . . . . . . . . . . . . . . . 78
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Dis harge Pressure Transdu er . . . . . . . . . . . 78
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Su tion Pressure Transdu er . . . . . . . . . . . . . 78
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Ele troni Throttling Valve (ETV) . . . . . . . . . . 79
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Installation of Servi e Kit . . . . . . . . . . . . . 80
Installation of Complete ETV
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Hot Gas Bypass Valve . . . . . . . . . . . . . . . . . . . . 81
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Compressors with Internal Oil Filter . . . . . . . 81
Internal Oil Filter Repla ement . . . . . . . . 81
Che king Compressor Oil Pressure. . . . . . . . 82
SSttrruu ttuurraall MMaaiinntteennaann ee.................................... 8844
Unit and Engine Mounting Bolts . . . . . . . . . . 84
Unit Inspe tion . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Condenser, Evaporator, and Radiator
Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Mi ro-Channel Coil Cleaning
Re ommendations . . . . . . . . . . . . . . . . . . . 84
Cleaning Intervals . . . . . . . . . . . . . . . . . . . 84
Cleaning Methods . . . . . . . . . . . . . . . . . . . 84
Defrost Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . 85
Defrost Damper . . . . . . . . . . . . . . . . . . . . . . . . . 85
Testing Defrost Damper . . . . . . . . . . . . . . 86
Troubleshooting Defrost
Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Repla ing Damper Gear Motor . . . . . . . . 87
Condenser and Evaporator Fan
Lo ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Condenser Inlet Orifi e
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Evaporator Fan Blower
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
TTaabbllee ooff CCoonntteennttss

TK 56433-5-MM-EN 7
Fan Shaft Assembly. . . . . . . . . . . . . . . . . . . . . . 88
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . 88
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . 88
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Lower Condenser Blower Assembly. . . . . . . 90
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . 90
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . 91
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Cross Shaft Assembly. . . . . . . . . . . . . . . . . . . . 91
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . 91
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . 92
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Idler Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . 92
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . 92
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . 93
MMee hhaannii aall DDiiaaggnnoossiiss .... ...... ...... ...... ...... ...... .... 9944
RReeffrriiggeerraattiioonn DDiiaaggnnoossiiss ...... ...... ...... ...... ...... .... 9977
RReeffrriiggeerraattiioonn DDiiaaggrraammss.... ...... ...... ...... ...... ...... .. 9999
Cool Cy le . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Heat/Defrost Cy le . . . . . . . . . . . . . . . . . . . . . . 101
DDiiaaggrraamm IInnddeexx......................................................110033
TTaabbllee ooff CCoonntteennttss

8TK 56433-5-MM-EN
Safety Precautions
Danger, Warning, Caution, and
Notice
Thermo King® re ommends that all servi e be
performed by a Thermo King dealer and to be aware of
several general safety pra ti es.
Safety advisories appear throughout this manual as
required. Your personal safety and the proper
operation of this unit depend upon the stri t
observan e of these pre autions.
Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury and
unsafe practices.
Indicates a situation that could result
in equipment or property-damage only
accidents.
General Practices
DDAANNGGEERR
HHaazzaarrdd ooff EExxpplloossiioonn!!
NNeevveerr aappppllyy hheeaatt ttoo aa sseeaalleedd rreeffrriiggeerraattiioonn ssyysstteemm
oorr oonnttaaiinneerr.. HHeeaatt iinn rreeaasseess iinntteerrnnaall pprreessssuurree,,
wwhhii hh mmiigghhtt aauussee aann eexxpplloossiioonn rreessuullttiinngg iinn ddeeaatthh
oorr sseerriioouuss iinnjjuurryy..
DDAANNGGEERR
HHaazzaarrddoouuss GGaasseess!!
RReeffrriiggeerraanntt iinn tthhee pprreesseenn ee ooff aann ooppeenn ffllaammee,,
ssppaarrkk,, oorr eellee ttrrii aall sshhoorrtt pprroodduu eess ttooxxii ggaasseess tthhaatt
aarree sseevveerree rreessppiirraattoorryy iirrrriittaannttss wwhhii hh aann aauussee
sseerriioouuss iinnjjuurryy oorr ppoossssiibbllee ddeeaatthh..
DDAANNGGEERR
RRiisskk ooff IInnjjuurryy!!
KKeeeepp yyoouurr hhaannddss,, llootthhiinngg,, aanndd ttoooollss lleeaarr ooff ffaannss
aanndd//oorr bbeellttss wwhheenn wwoorrkkiinngg oonn aa uunniitt tthhaatt iiss
rruunnnniinngg oorr wwhheenn ooppeenniinngg oorr lloossiinngg oommpprreessssoorr
sseerrvvii ee vvaallvveess.. LLoooossee llootthhiinngg mmiigghhtt eennttaannggllee
mmoovviinngg ppuulllleeyyss oorr bbeellttss,, aauussiinngg sseerriioouuss iinnjjuurryy oorr
ppoossssiibbllee ddeeaatthh..
DDAANNGGEERR
RReeffrriiggeerraanntt VVaappoorr HHaazzaarrdd!!
DDoo nnoott iinnhhaallee rreeffrriiggeerraanntt.. UUssee aauuttiioonn wwhheenn
wwoorrkkiinngg wwiitthh rreeffrriiggeerraanntt oorr aa rreeffrriiggeerraattiioonn ssyysstteemm
iinn aannyy oonnffiinneedd aarreeaa wwiitthh aa lliimmiitteedd aaiirr ssuuppppllyy..
RReeffrriiggeerraanntt ddiissppllaa eess aaiirr aanndd aann aauussee ooxxyyggeenn
ddeepplleettiioonn,, rreessuullttiinngg iinn ssuuffffoo aattiioonn aanndd ppoossssiibbllee
ddeeaatthh..
DDAANNGGEERR
CCoonnffiinneedd SSppaa ee HHaazzaarrddss!!
AAvvooiidd eennggiinnee ooppeerraattiioonn iinn oonnffiinneedd ssppaa eess aanndd
aarreeaass oorr iirr uummssttaann eess wwhheerree ffuummeess ffrroomm tthhee
eennggiinnee oouulldd bbee oommee ttrraappppeedd aanndd aauussee sseerriioouuss
iinnjjuurryy oorr ddeeaatthh..
WWAARRNNIINNGG
HHaazzaarrdd ooff EExxpplloossiioonn!!
NNeevveerr lloossee tthhee oommpprreessssoorr ddiiss hhaarrggee sseerrvvii ee
vvaallvvee wwhheenn tthhee uunniitt iiss ooppeerraattiinngg.. NNeevveerr ooppeerraattee
tthhee uunniitt wwiitthh tthhee ddiiss hhaarrggee vvaallvvee lloosseedd ((ffrroonntt
sseeaatteedd)).. TThhiiss oonnddiittiioonn iinn rreeaasseess iinntteerrnnaall
pprreessssuurree,, wwhhii hh aann aauussee aann eexxpplloossiioonn..
WWAARRNNIINNGG
PPrrooppeerr EEqquuiippmmeenntt CCoonnddiittiioonn!!
GGaauuggee mmaanniiffoolldd hhoosseess mmuusstt bbee iinn ggoooodd oonnddiittiioonn
bbeeffoorree uussiinngg tthheemm.. NNeevveerr lleett tthheemm oommee iinn oonnttaa tt
wwiitthh mmoovviinngg bbeellttss,, ffaannss,, ppuulllleeyyss oorr hhoott ssuurrffaa eess..
DDeeffee ttiivvee ggaauuggee eeqquuiippmmeenntt aann ddaammaaggee
oommppoonneennttss oorr aauussee sseerriioouuss iinnjjuurryy..
WWAARRNNIINNGG
PPeerrssoonnaall PPrroottee ttiivvee EEqquuiippmmeenntt ((PPPPEE))
RReeqquuiirreedd!!
AAllwwaayyss wweeaarr ggoogggglleess oorr ssaaffeettyy ggllaasssseess wwhheenn
wwoorrkkiinngg oonn aa uunniitt.. RReeffrriiggeerraanntt lliiqquuiidd,, ooiill,, aanndd
bbaatttteerryy aa iidd aann ppeerrmmaanneennttllyy ddaammaaggee yyoouurr eeyyeess..
SSeeee ““FFiirrsstt AAiidd””..
WWAARRNNIINNGG
EEqquuiippmmeenntt DDaammaaggee aanndd RRiisskk ooff
IInnjjuurryy!!
NNeevveerr ddrriillll hhoolleess iinnttoo tthhee uunniitt uunnlleessss iinnssttrruu tteedd bbyy
TThheerrmmoo KKiinngg.. HHoolleess ddrriilllleedd iinnttoo hhiigghh vvoollttaaggee
aabblleess oouulldd aauussee aann eellee ttrrii aall ffiirree,, sseevveerree
ppeerrssoonnaall iinnjjuurryy,, oorr eevveenn ddeeaatthh..

TK 56433-5-MM-EN 9
WWAARRNNIINNGG
RRiisskk ooff IInnjjuurryy!!
WWhheenn uussiinngg llaaddddeerrss ttoo iinnssttaallll oorr sseerrvvii ee
rreeffrriiggeerraattiioonn ssyysstteemmss,, aallwwaayyss oobbsseerrvvee tthhee llaaddddeerr
mmaannuuffaa ttuurreerr’’ss ssaaffeettyy llaabbeellss aanndd wwaarrnniinnggss.. AA wwoorrkk
ppllaattffoorrmm oorr ss aaffffoollddiinngg iiss tthhee rree oommmmeennddeedd
mmeetthhoodd ffoorr iinnssttaallllaattiioonnss aanndd sseerrvvii iinngg..
CCAAUUTTIIOONN
SShhaarrpp EEddggeess!!
EExxppoosseedd ooiill ffiinnss aann aauussee llaa eerraattiioonnss.. SSeerrvvii ee
wwoorrkk oonn tthhee eevvaappoorraattoorr oorr oonnddeennsseerr ooiillss iiss bbeesstt
lleefftt ttoo aa eerrttiiffiieedd TThheerrmmoo KKiinngg ttee hhnnii iiaann..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
AAllll mmoouunnttiinngg bboollttss mmuusstt bbee tthhee oorrrree tt lleennggtthh ffoorr
tthheeiirr aappppllii aattiioonnss aanndd ttoorrqquueedd ttoo ssppee iiffii aattiioonn..
IInn oorrrree tt bboolltt lleennggtthhss aanndd iimmpprrooppeerr ttoorrqquuee
ssppee iiffii aattiioonnss aann ddaammaaggee eeqquuiippmmeenntt..
Battery Installation and Ca le
Routing
WWAARRNNIINNGG
HHaazzaarrdd ooff EExxpplloossiioonn!!
AAnn iimmpprrooppeerrllyy iinnssttaalllleedd bbaatttteerryy oouulldd rreessuulltt iinn aa
ffiirree,, eexxpplloossiioonn,, oorr iinnjjuurryy.. AA TThheerrmmoo KKiinngg aapppprroovveedd
bbaatttteerryy mmuusstt bbee iinnssttaalllleedd aanndd pprrooppeerrllyy ssee uurreedd ttoo
tthhee bbaatttteerryy ttrraayy..
WWAARRNNIINNGG
HHaazzaarrdd ooff EExxpplloossiioonn!!
IImmpprrooppeerrllyy iinnssttaalllleedd bbaatttteerryy aabblleess oouulldd rreessuulltt iinn
aa ffiirree,, eexxpplloossiioonn,, oorr iinnjjuurryy.. BBaatttteerryy aabblleess mmuusstt bbee
iinnssttaalllleedd,, rroouutteedd,, aanndd ssee uurreedd pprrooppeerrllyy ttoo pprreevveenntt
tthheemm ffrroomm rruubbbbiinngg,, hhaaffffiinngg,, oorr mmaakkiinngg oonnttaa tt
wwiitthh hhoott,, sshhaarrpp,, oorr rroottaattiinngg oommppoonneennttss..
WWAARRNNIINNGG
FFiirree HHaazzaarrdd!!
DDoo nnoott aattttaa hh ffuueell lliinneess ttoo bbaatttteerryy aabblleess oorr
eellee ttrrii aall hhaarrnneesssseess.. TThhiiss hhaass tthhee ppootteennttiiaall ttoo
aauussee aa ffiirree aanndd oouulldd aauussee sseerriioouuss iinnjjuurryy oorr
ddeeaatthh..
WWAARRNNIINNGG
PPeerrssoonnaall PPrroottee ttiivvee EEqquuiippmmeenntt ((PPPPEE))
RReeqquuiirreedd!!
AA bbaatttteerryy aann bbee ddaannggeerroouuss.. AA bbaatttteerryy oonnttaaiinnss aa
ffllaammmmaabbllee ggaass tthhaatt aann iiggnniittee oorr eexxppllooddee.. AA
bbaatttteerryy ssttoorreess eennoouugghh eellee ttrrii iittyy ttoo bbuurrnn yyoouu iiff iitt
ddiiss hhaarrggeess qquuii kkllyy.. AA bbaatttteerryy oonnttaaiinnss bbaatttteerryy aa iidd
tthhaatt aann bbuurrnn yyoouu.. AAllwwaayyss wweeaarr ggoogggglleess oorr ssaaffeettyy
ggllaasssseess aanndd ppeerrssoonnaall pprroottee ttiivvee eeqquuiippmmeenntt wwhheenn
wwoorrkkiinngg wwiitthh aa bbaatttteerryy.. IIff yyoouu ggeett bbaatttteerryy aa iidd oonn
yyoouu,, iimmmmeeddiiaatteellyy fflluusshh iitt wwiitthh wwaatteerr aanndd ggeett
mmeeddii aall aatttteennttiioonn..
WWAARRNNIINNGG
HHaazzaarrdd ooff EExxpplloossiioonn!!
AAllwwaayyss oovveerr bbaatttteerryy tteerrmmiinnaallss ttoo pprreevveenntt tthheemm
ffrroomm mmaakkiinngg oonnttaa tt wwiitthh mmeettaall oommppoonneennttss
dduurriinngg bbaatttteerryy iinnssttaallllaattiioonn.. BBaatttteerryy tteerrmmiinnaallss
ggrroouunnddiinngg aaggaaiinnsstt mmeettaall oouulldd aauussee tthhee bbaatttteerryy
ttoo eexxppllooddee..
CCAAUUTTIIOONN
HHaazzaarrddoouuss SSeerrvvii ee PPrroo eedduurreess!!
SSeett aallll uunniitt eellee ttrrii aall oonnttrroollss ttoo tthhee OOFFFF ppoossiittiioonn
bbeeffoorree oonnnnee ttiinngg bbaatttteerryy aabblleess ttoo tthhee bbaatttteerryy ttoo
pprreevveenntt uunniitt ffrroomm ssttaarrttiinngg uunneexxppee tteeddllyy aanndd
aauussiinngg ppeerrssoonnaall iinnjjuurryy..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
DDoo nnoott oonnnnee tt ootthheerr mmaannuuffaa ttuurreerr’’ss eeqquuiippmmeenntt oorr
aa eessssoorriieess ttoo tthhee uunniitt uunnlleessss aapppprroovveedd bbyy
TThheerrmmoo KKiinngg.. FFaaiilluurree ttoo ddoo ssoo aann rreessuulltt iinn sseevveerree
ddaammaaggee ttoo eeqquuiippmmeenntt aanndd vvooiidd tthhee wwaarrrraannttyy..
Battery Removal
WWAARRNNIINNGG
HHaazzaarrdd ooff EExxpplloossiioonn!!
WWhheenn rreemmoovviinngg bbaatttteerryy aabblleess,, AALLWWAAYYSS
ddiiss oonnnnee tt tthhee nneeggaattiivvee bbaatttteerryy tteerrmmiinnaall ffiirrsstt..
TThheenn rreemmoovvee tthhee ppoossiittiivvee tteerrmmiinnaall.. WWhheenn
rree oonnnnee ttiinngg tthhee bbaatttteerryy tteerrmmiinnaallss,, oonnnnee tt tthhee
ppoossiittiivvee tteerrmmiinnaall ((++)) ffiirrsstt,, aanndd oonnnnee tt tthhee
nneeggaattiivvee ((--)) tteerrmmiinnaall llaasstt..
This order is important be ause the frame is grounded
to the negative battery terminal. If the negative
terminal is still onne ted, a omplete ir uit exists
from the positive terminal of the battery to the frame.
Metal obje ts onta ting the positive side and the
frame simultaneously will ause sparks or ar ing. If
there are suffi ient hydrogen gases emitted from the
SSaaffeettyy PPrree aauuttiioonnss

10 TK 56433-5-MM-EN
battery, an explosion might o ur, ausing equipment
damage, serious injury, even death.
Refrigerant Hazards
DDAANNGGEERR
HHaazzaarrddoouuss PPrreessssuurreess!!
AAllwwaayyss ssttoorree rreeffrriiggeerraanntt iinn pprrooppeerr oonnttaaiinneerrss,, oouutt
ooff ddiirree tt ssuunnlliigghhtt aanndd aawwaayy ffrroomm iinntteennssee hheeaatt..
HHeeaatt iinn rreeaasseess pprreessssuurree iinnssiiddee ssttoorraaggee oonnttaaiinneerrss,,
wwhhii hh aann aauussee tthheemm ttoo bbuurrsstt aanndd oouulldd rreessuulltt iinn
sseevveerree ppeerrssoonnaall iinnjjuurryy..
DDAANNGGEERR
CCoommbbuussttiibbllee HHaazzaarrdd!!
DDoo nnoott uussee ooxxyyggeenn ((OO22 )) oorr oommpprreesssseedd aaiirr ffoorr lleeaakk
tteessttiinngg.. OOxxyyggeenn mmiixxeedd wwiitthh rreeffrriiggeerraanntt iiss
oommbbuussttiibbllee..
WWAARRNNIINNGG
HHaazzaarrddoouuss GGaasseess!!
DDoo nnoott uussee aa HHaalliiddee ttoorr hh.. WWhheenn aa ffllaammee oommeess iinn
oonnttaa tt wwiitthh rreeffrriiggeerraanntt,, ttooxxii ggaasseess aarree pprroodduu eedd..
TThheessee ggaasseess aann aauussee ssuuffffoo aattiioonn,, eevveenn ddeeaatthh..
WWAARRNNIINNGG
PPeerrssoonnaall PPrroottee ttiivvee EEqquuiippmmeenntt ((PPPPEE))
RReeqquuiirreedd!!
RReeffrriiggeerraanntt iinn aa lliiqquuiidd ssttaattee eevvaappoorraatteess rraappiiddllyy
wwhheenn eexxppoosseedd ttoo tthhee aattmmoosspphheerree,, ffrreeeezziinngg
aannyytthhiinngg iitt oonnttaa ttss.. WWeeaarr bbuuttyyll lliinneedd gglloovveess aanndd
ootthheerr llootthhiinngg aanndd eeyyee wweeaarr wwhheenn hhaannddlliinngg
rreeffrriiggeerraanntt ttoo hheellpp pprreevveenntt ffrroossttbbiittee..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
WWhheenn bbeeiinngg ttrraannssffeerrrreedd,, rreeffrriiggeerraanntt mmuusstt bbee iinn
lliiqquuiidd ssttaattee ttoo aavvooiidd ppoossssiibbllee eeqquuiippmmeenntt ddaammaaggee..
Refrigerant Oil Hazards
WWAARRNNIINNGG
PPeerrssoonnaall PPrroottee ttiivvee EEqquuiippmmeenntt ((PPPPEE))
RReeqquuiirreedd!!
PPrroottee tt yyoouurr eeyyeess ffrroomm oonnttaa tt wwiitthh rreeffrriiggeerraanntt ooiill..
TThhee ooiill aann aauussee sseerriioouuss eeyyee iinnjjuurriieess.. PPrroottee tt sskkiinn
aanndd llootthhiinngg ffrroomm pprroolloonnggeedd oorr rreeppeeaatteedd oonnttaa tt
wwiitthh rreeffrriiggeerraanntt ooiill.. TToo pprreevveenntt iirrrriittaattiioonn,, wwaasshh
yyoouurr hhaannddss aanndd llootthhiinngg tthhoorroouugghhllyy aafftteerr hhaannddlliinngg
tthhee ooiill.. RRuubbbbeerr gglloovveess aarree rree oommmmeennddeedd..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
UUssee tthhee oorrrree tt ooiill iinn TThheerrmmoo KKiinngg ssyysstteemmss ttoo
aavvooiidd ddaammaaggiinngg eeqquuiippmmeenntt aanndd nnuulllliiffyyiinngg iittss
wwaarrrraannttyy..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
DDoo nnoott mmiixx rreeffrriiggeerraanntt ooiillss.. MMiixxiinngg iinn oommppaattiibbllee
ooiillss wwiillll ddaammaaggee tthhee ssyysstteemm..
NNOOTTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
UUssee ddeeddii aatteedd rreeffrriiggeerraattiioonn eeqquuiippmmeenntt ttoo pprreevveenntt
oonnttaammiinnaattiinngg rreeffrriiggeerraattiioonn ssyysstteemmss wwiitthh tthhee
wwrroonngg ttyyppee ooff ooiill oorr rreeffrriiggeerraanntt..
NNOOTTIICCEE
SSyysstteemm CCoonnttaammiinnaattiioonn!!
DDoo nnoott eexxppoossee tthhee rreeffrriiggeerraanntt ooiill ttoo tthhee aaiirr aannyy
lloonnggeerr tthhaann nnee eessssaarryy.. SSttoorree rreeffrriiggeerraanntt ooiill iinn aann
aapppprroovveedd sseeaalleedd oonnttaaiinneerr ttoo aavvooiidd mmooiissttuurree
oonnttaammiinnaattiioonn.. TThhee ooiill wwiillll aabbssoorrbb mmooiissttuurree,,
wwhhii hh rreessuullttss iinn mmuu hh lloonnggeerr eevvaa uuaattiioonn ttiimmeess
aanndd ppoossssiibbllee ssyysstteemm oonnttaammiinnaattiioonn..
NNOOTTIICCEE
MMaatteerriiaall DDaammaaggee!!
WWiippee uupp ssppiillllss iimmmmeeddiiaatteellyy.. RReeffrriiggeerraanntt ooiill aann
ddaammaaggee ppaaiinnttss aanndd rruubbbbeerr mmaatteerriiaallss..
Electrical Hazards
Low Voltage
IImmppoorrttaanntt Some components are connected directly
to un-switched battery power. All
connections and circuits labeled with a “2”
prefix are connected directly to battery
power. Always disconnect the battery
before servicing the unit.
WWAARRNNIINNGG
LLiivvee EEllee ttrrii aall CCoommppoonneennttss!!
CCoonnttrrooll iirr uuiittss uusseedd iinn rreeffrriiggeerraattiioonn uunniittss aarree llooww
vvoollttaaggee ((1122 ttoo 2244 vvoollttss dd )).. HHoowweevveerr,, tthhee llaarrggee
aammoouunntt ooff aammppeerraaggee aavvaaiillaabbllee aann aauussee sseevveerree
bbuurrnnss iiff aa iiddeennttaallllyy sshhoorrtteedd ttoo ggrroouunndd wwiitthh mmeettaall
oobbjjee ttss,, ssuu hh aass ttoooollss.. DDoo nnoott wweeaarr jjeewweellrryy,,
wwaatt hheess,, oorr rriinnggss bbee aauussee tthheeyy iinn rreeaassee tthhee rriisskk ooff
sshhoorrttiinngg oouutt eellee ttrrii aall iirr uuiittss aanndd ddaammaaggiinngg
eeqquuiippmmeenntt oorr aauussiinngg sseevveerree bbuurrnnss..
SSaaffeettyy PPrree aauuttiioonnss

TK 56433-5-MM-EN 11
Microprocessor Service
Precautions
Take pre autions to prevent ele trostati dis harge
when servi ing the mi ropro essor and its related
omponents. Even tiny amounts of urrent an
severely damage or destroy ele troni omponents.
Observe the following pre autions when servi ing a
mi ropro essor ontrol system to avoid damaging
ele troni omponents. Refer to the appropriate
mi ropro essor diagnosis manual for more
information.
• If the mi ropro essor has a power swit h, turn it
OFF before onne ting or dis onne ting the battery.
• Dis onne t power to the unit.
• Avoid wearing lothing that generates stati
ele tri ity (wool, nylon, polyester, et .).
• Wear a wrist strap (P/N 204-622 or equivalent) with
the lead end onne ted to the mi ropro essor’s
ground terminal. These straps are available from
most ele troni equipment distributors. DO NOT
wear these straps with power applied to the unit.
• Avoid unne essary onta t with the ele troni
omponents.
• Store and ship ele troni omponents in antistati
bags and prote tive pa kaging.
• Leave ele troni omponents in their antistati
pa king materials until you’re ready to use them.
• After servi ing any ele troni omponents, he k
the wiring for possible errors before restoring
power to the unit.
• Never use a battery and a light bulb to test ir uits
on any mi ropro essor-based equipment.
Welding Precautions
Take pre autions before ele tri ally welding any
portion of the unit or the vehi le to whi h it is atta hed.
Verify that welding urrents are not allowed to flow
through the unit’s ele troni ir uits.
Observe the following pre autions when welding to
avoid damaging ele troni omponents.
• If the mi ropro essor has a power swit h, turn it
OFF before onne ting or dis onne ting the battery.
• Dis onne t power to the unit.
• Dis onne t all wire harnesses from the
mi ropro essor. Dis onne t the ECU and the
battery harger if so equipped.
• If there are any ele tri al ir uit breakers in the
ontrol box, swit h them OFF.
• Close the ontrol box.
• Components that ould be damaged by welding
sparks should be removed from the unit.
• Use normal welding pro edures, but keep the
ground return ele trode as lose to the area being
welded as pra ti al. This will redu e the likelihood
of stray welding urrents passing through any
ele troni ir uits.
SSaaffeettyy PPrree aauuttiioonnss

12 TK 56433-5-MM-EN
First Aid
RREEFFRRIIGGEERRAANNTT
•EEyyeess:: For onta t with liquid, immediately flush
eyes with large amounts of water and get prompt
medi al attention.
•SSkkiinn:: Flush area with large amounts of warm water.
Do not apply heat. Remove ontaminated lothing
and shoes. Wrap burns with dry, sterile, bulky
dressing to prote t from infe tion. Get prompt
medi al attention. Wash ontaminated lothing
before reuse.
•IInnhhaallaattiioonn:: Move vi tim to fresh air and use Cardio
Pulmonary Resus itation (CPR) or mouth-to-mouth
resus itation to restore breathing, if ne essary. Stay
with vi tim until emergen y personnel arrive.
•FFrroosstt BBiittee:: In the event of frost bite , the obje tives
of First Aid are to prote t the frozen area from
further injury, warm the affe ted area rapidly, and
to maintain respiration.
RREEFFRRIIGGEERRAANNTT OOIILL
•EEyyeess:: Immediately flush with large amounts of
water for at least 15 minutes. Get prompt medi al
attention.
•SSkkiinn:: Remove ontaminated lothing. Wash
thoroughly with soap and water. Get medi al
attention if irritation persists.
•IInnhhaallaattiioonn:: Move vi tim to fresh air and use Cardio
Pulmonary Resus itation (CPR) or mouth-to-mouth
resus itation to restore breathing, if ne essary. Stay
with vi tim until emergen y personnel arrive.
•IInnggeessttiioonn:: Do not indu e vomiting. Immediately
onta t lo al poison ontrol enter or physi ian.
EENNGGIINNEE CCOOOOLLAANNTT
•EEyyeess:: Immediately flush with large amounts of
water for at least 15 minutes. Get prompt medi al
attention.
•SSkkiinn:: Remove ontaminated lothing. Wash
thoroughly with soap and water. Get medi al
attention if irritation persists.
•IInnggeessttiioonn:: Do not indu e vomiting. Immediately
onta t lo al poison ontrol enter or physi ian.
BBAATTTTEERRYY AACCIIDD
•EEyyeess:: Immediately flush with large amounts of
water for at least 15 minutes. Get prompt medi al
attention. Wash skin with soap and water.
EELLEECCTTRRIICCAALL SSHHOOCCKK
Take IMMEDIATE a tion after a person has re eived an
ele tri al sho k. Get qui k medi al assistan e, if
possible.
The sour e of the sho k must be qui kly stopped, by
either shutting off the power or removing the vi tim. If
the power annot be shut off, the wire should be ut
with an non- ondu tive tool, su h as a wood-handle
axe or thi kly insulated able utters. Res uers should
wear insulated gloves and safety glasses, and avoid
looking at wires being ut. The ensuing flash an ause
burns and blindness.
If the vi tim must be removed from a live ir uit, pull
the vi tim away with a non- ondu tive material. Use
wood, rope, a belt or oat to pull or push the vi tim
away from the urrent. DO NOT TOUCH the vi tim. You
will re eive a sho k from urrent flowing through the
vi tim’s body. After separating the vi tim from power
sour e, immediately he k for signs of a pulse and
respiration. If no pulse is present, start Cardio
Pulmonary Resus itation (CPR). If a pulse is present,
respiration might be restored by using mouth-to-
mouth resus itation. Call for emergen y medi al
assistan e.
AASSPPHHYYXXIIAATTIIOONN
Move vi tim to fresh air and use Cardio Pulmonary
Resus itation (CPR) or mouth-to-mouth resus itation to
restore breathing, if ne essary. Stay with vi tim until
emergen y personnel arrive.
SSaaffeettyy PPrree aauuttiioonnss

TK 56433-5-MM-EN 13
Specifications
Engine
Model TK486V25X (Tier 4)
Number of Cylinders 4
Cylinder Arrangement In-line vertical, number 1 on flywheel end
Firing Order 1-3-4-2
Direction of Rotation Counterclockwise viewed from flywheel end
Fuel Type No. 2 diesel fuel under normal conditions
No. 1 diesel fuel is acceptable cold weather fuel
Oil Capacity 13 quarts (12.3 liters/litres) crankcase and oil filter
Fill to full mark on dipstick
Oil Type API Classification CJ-4 or CK-4
ACEA Rating E6
Oil Viscosity 14 F to 122 F (-10 C to 50 C): SAE 15W-40 (Synthetic)
5 to 104 F (-15 to 40 C): SAE 15W-40
5 to 104 F (-15 to 40 C): SAE 10W-30 (Synthetic or
Synthetic Blend)
-13 to 104 F (-25 to 40 C): SAE 10W-40
-13 to 86 F (-25 to 30 C): SAE 10W-30
-22 to 122 F (-30 to 50 C): SAE 5W-40 (Synthetic)
Below -22 F (-30 C): SAE 0W-30 (Synthetic)
Engine RPM Low Speed Operation
High Speed Operation
1450 ± 25 rpm
Adjusted so throttle bracket is tight against high speed
stop screw. Engine speed will be well above 2200 rpm in
light refrigeration load situations.
Engine Oil Pressure 18 psig (127 kPa) minimum in low speed
45 to 57 psig (310 to 390 kPa) in high speed
Intake Valve Clearance 0.006 to 0.010 in. (0.15 to 0.25 mm)
Exhaust Valve Clearance 0.006 to 0.010 in. (0.15 to 0.25 mm)
Valve Setting Temperature 70 F (21 C)
Low Oil Pressure Switch (Normally
Closed)
17 ± 3 psig (117 ± 21 kPa)
Engine Coolant Thermostat 160 F (71 C)
Engine Coolant Type
NNOOTTIICCEE
SSyysstteemm CCoonnttaammiinnaattiioonn!!
DDoo nnoott aadddd ootthheerr ttyyppeess ooff oooollaanntt ttoo oooolliinngg ssyysstteemmss uussiinngg
CChheevvrroonn//DDeelloo XXLLCC eexx eepptt iinn aann eemmeerrggeenn yy.. IIff aannootthheerr ttyyppee ooff
oooollaanntt iiss aaddddeedd,, tthhee oooollaanntt mmuusstt bbee hhaannggeedd ttoo CChheevvrroonn//
DDeelloo XXLLCC wwhheenn aavvaaiillaabbllee..
Chevron/Delo XLC (Havoline XLC for Europe) - a nitrite-
free Extended Life Coolant (ELC)
Use a 50/50 concentration
Coolant System Capacity 7 quarts (6.6 liters/litres) with overflow tank
Radiator Cap Pressure 7 psi (0.48 bar)
Drive Direct to compressor; belts to fans, alternator, and water
pump

14 TK 56433-5-MM-EN
Belt Tension
Use of Frequency Gauge P/N 204-1903 to measure
frequency (Hz) is recommended.
Model 30/50 New Belt Field Reset
Electric Motor/Compressor Drive
Belt
Units fitted with original SLX clutch (up until build
date 13 August 2013)
73-76 67-72
Units fitted with SLX clutch retrofit (P/N 78-1884) Use service tool P/N 204-2436 to set belt tension.
Distance of 139.0 mm as set by service tool equates
to 78-81 Hz for a new belt, and 69-73 Hz for a field
reset belt.
Units fitted with SLXe/SLXi clutch (P/N 77-3189) Use service tool P/N 204-2436 to set belt tension.
Distance of 139.0 mm as set by service tool equates
to 95 Hz for a new belt.
Fan Drive Belt SLX/SLXe/SLXi 106-118 95-106
Water Pump Belt Tension Number on TK Gauge 204–427 Field Reset: 35-40
Use of Frequency Gauge P/N 204-1903 to measure
frequency (Hz) is recommended.
Model 30 New Belt Field Reset
Engine/Cross Shaft (Jackshaft)
Belt
Clutch Tensioner (P/N 77-3189) Use service tool P/N 204-2436 to set belt tension.
Distance of 139.0 mm as set by service tool equates
to 95 Hz for a new belt.
Fan Drive Belt TK Belt Tension Tool 204-3185 106-118 Hz 95-106 Hz
Water Pump Belt Tension Number on TK Gauge 204-0427 Field Reset: 35-40
Refrigeration System
Compressor Thermo King X430P®
Refrigerant Charge - Type 12.5 lb (5.7 kg) – R452A
Compressor Oil Charge 4.3 qt (4.1 liters/litres)*
Compressor Oil Type Polyol Ester type P/N 203-513
Heat/Defrost Method Hot gas
High Pressure Cutout 470 +/-7 psi (3241 +/-48 kPa)
Automatic reset @ 375 ± 38 psi (2586 ±
262 kPa)
* When the compressor is removed from the unit, oil level should be noted or the oil removed from the compressor should be measured so that
the same amount of oil can be added before placing the replacement compressor in the unit.
Electrical Control System
Voltage 12.5 Vdc (nominal)
Battery One, Group C31, 12 volt battery (950 CCA recommended for operation below -15°F or -26°C)
Fuses See Fuses in “Electrical Maintenance”
Battery Charging (Alternator) 37 ampere brush type
Voltage Regulator Setting
(Alternator)
13.8 to 14.2 volts @ 25°C
SSppee iiffii aattiioonnss

TK 56433-5-MM-EN 15
Electrical Components
Note: Disconnect components from the unit circuit to check resistance.
Component Current Draw (Amps) at 12.5
Vdc
Resistance — Cold (Ohms)
Fuel Solenoid Pull-in Coil
Hold-in Coil
35 to 45
0.5 or 1.0
0.2 to 0.3
24 to 29
High Speed (Throttle) Solenoid 2.9 4.3
Air Heater 60 to 70* 0.14
Damper Gear Motor 2.5 to 3.1 4.0 to 5.0
Pilot Solenoid 0.7 17.0
Electronic Throttling Valve Coil A (Red [EVA] and Blue [EVB]
Wires)
- 20 to 35
Coil B (Black [EVC] and White
[EVD] Wires)
- 20 to 35
Hot Gas Bypass Valve 1.5 8.0
Starter Motor 350 to 475**
* Typical current draw during preheat.
** On-the-engine cranking check. Bench test is approximately 140 amps.
SSppee iiffii aattiioonnss

16 TK 56433-5-MM-EN
Maintenance Inspection Schedule
Pretrip Every
1,500
Hours
Every
3,000
Hours*
Annual/
4,500
Hours
Inspect/Service These Items
Microprocessor
• Run Pretrip Test.
Engine
•Check fuel supply.
• • • • Check engine oil level.
• • • • Inspect belts for condition and proper tension.
• • • • Inspect all belt tensioners and belt idler pulleys for condition and correct
operation. Lubricate as needed.
• • • • Check engine oil pressure hot, on high speed (should display “OK”).
• • • • Listen for unusual noises, vibrations, etc.
• • Visually inspect exhaust system for leakage and abnormal smoke or particulate
emissions.
• • • • Check engine coolant level and antifreeze protection (-30 F [-40 C]).
• • • Drain water from fuel tank and check vent.
• • • Inspect/clean fuel transfer pump inlet strainer.
• • • Check and adjust engine speeds (high and low speed).
• • • Check condition of drive coupling bushings per Service Bulletin TT171.
•Inspect air filter element - Dependent on operating conditions, assess fitness to
continue to next service.
• Check engine mounts for wear.
• Replace EMI 3000 air cleaner element (see “EMI 3000 Air Cleaner”) at 3,000
hours or two years (whichever occurs first).
•Replace EMI 3000 fuel filter/water separator. See Note.
• Change engine oil and oil filter (hot). Requires oil with API Classification CJ-4 or
CK-4 (ACEA Rating E9).
• Adjust engine valve clearance.
• Test fuel injection nozzles at least every 3,000 hours. Based on EPA 40 CFR Part
89.
— Replace all belts every 6,000 hours or every 48 months (whichever occurs
first).
— Change ELC (red) engine coolant every 5 years or 12,000 hours. Units
equipped with ELC have an ELC nameplate on the expansion tank (see “Engine
Cooling System”).
— Replace fuel return lines between fuel injection nozzles every 10,000 hours.
Electrical
• • • • Check operation of defrost damper (closes on defrost initiation and opens on
defrost termination).
• • • Inspect battery terminals.
• • • Inspect wire harness for damaged wires or connections.
• Inspect alternator wire connections for tightness and corrosion.

TK 56433-5-MM-EN 17
Pretrip Every
1,500
Hours
Every
3,000
Hours*
Annual/
4,500
Hours
Inspect/Service These Items
• Inspect alternator brushes.
— Change alternator brushes and regulator at 6,000 hours.
Refrigeration
• • • • Check refrigerant level.
• • • Visually inspect condenser/radiator and evaporator coils for damage and dirt
ingress.
• • • Check for proper suction and discharge pressures and ETV operation.
• • • Check compressor oil level and condition.
•Check compressor efficiency and pump down refrigeration system.
• — Replace dehydrator and check discharge and suction pressure every two (2)
years or 3,000 hours.
Structural
• • • • Visually inspect unit for fluid leaks.
• • • • Visually inspect unit for damaged, loose, or broken parts (includes air ducts
and bulkheads).
• • • Inspect cross shaft, fanshaft, and idlers for bearing wear (noise).
• • • Clean entire unit including condenser and evaporator coils and defrost drains.
• • • Check all unit and fuel tank mounting bolts, brackets, lines, hoses, etc.
NNoottee * 3,000 hours or two years, whichever occurs
first.
MMaaiinntteennaann ee IInnssppee ttiioonn SS hheedduullee

18 TK 56433-5-MM-EN
Unit Description
Unit Overview
The Thermo King SLXi-DRC is a one pie e, self-
ontained, diesel powered, air ooling/heating units
operating under the ontrol of the SMART REEFER 3
(SR-3) programmable mi ropro essor ontroller. The
unit mounts on the front of the ontainer with the
evaporator extending through an opening in the front
wall.
The unit features the quiet running Thermo King
TK486V25X engine, and the Thermo King X430P
re ipro ating ompressor.
Figure 1. Front View
Design Features
• SMART REEFER SR-3 Controller
• OptiSet™ Plus
• Servi eWat h™ Data Logger
• CargoWat h™ Data Logger
• Ele troni Throttling Valve (ETV)
• EMI-3000
• Solar Panel (36 W)
Diesel Engine
The unit uses the TK486V25X, a 4- ylinder, water
ooled, dire t inje tion diesel engine.
The engine is oupled dire tly to the ompressor. Belts
transmit power to the unit fans, alternator, and water
pump.
Figure 2. TK486V25X
Thermo King X430 Series Reciprocating
Compressor
The unit is equipped with a Thermo King X430 Series
four ylinder re ipro ating ompressor with 30.0 u. in.
(492 m3) displa ement.
Electronic Throttling Valve
The Ele troni Throttling Valve (ETV) is a variable
position valve operated by a stepper motor. The ETV is
lo ated in the su tion line between the a umulator
and the su tion vibrasorber. Dis harge and su tion
pressure transdu ers supply pressure information to
the mi ropro essor ontrol system. The
mi ropro essor ontrols the ele troni throttling valve
dire tly. The ETV repla es the me hani al throttling
valve used in other units.
The ETV system provides enhan ed ontrol of the
refrigeration system as follows:
•SSuu ttiioonn PPrreessssuurree CCoonnttrrooll:: The su tion pressure
ontrol algorithm is the primary ontrol used to
obtain maximum apa ity. This allows the
refrigeration system to fully utilize the power
apabilities of the engine under varying onditions.
•DDiiss hhaarrggee PPrreessssuurree PPrroottee ttiioonn:: This prote tion
algorithm provides an additional measure of
prote tion against high dis harge pressures and
possible ompressor damage. It will prevent
shutdowns in high ambient temperatures by

TK 56433-5-MM-EN 19
allowing ontinued operation of the unit at a
temporarily redu ed refrigeration apa ity.
•EEnnggiinnee CCoooollaanntt TTeemmppeerraattuurree PPrroottee ttiioonn:: This
prote tion algorithm prote ts the engine from high
oolant temperature shutdowns and possible
engine damage. It will redu e the load on the
engine by temporarily redu ing refrigeration
apa ity. This lowers the engine temperature while
still allowing ontinued unit operation.
•MMoodduullaattiioonn CCoonnttrrooll:: Modulation ontrol provides
pre ise ontrol of the temperature in the argo area.
As the return air temperature begins to approa h
the setpoint, the mi ropro essor begins to lose the
ETV to redu e the apa ity. The mi ropro essor
loses the ETV more as the return air temperature
gets loser to the setpoint. When the return air
temperature is near setpoint, the ETV may lose to
its limit and the hot gas bypass valve may open.
When the return air temperature begins to move
away from the setpoint, the ETV begins to open and
the hot gas bypass valve loses (if it was open).
This provides very smooth and steady temperature
ontrol and the temperature does not os illate
above and below setpoint as mu h as it does in a
unit that does not have modulation ontrol.
SMART REEFER 3 (SR-3) Control System
CCAAUUTTIIOONN
RRiisskk ooff IInnjjuurryy!!
DDoo nnoott ooppeerraattee tthhee SSRR--33 CCoonnttrroolllleerr uunnttiill yyoouu aarree
oommpplleetteellyy ffaammiilliiaarr wwiitthh iittss ffuunn ttiioonn..
The SR-3 is a mi ropro essor ontrol system designed
for a transport refrigeration system. The SR-3
integrates the following fun tions:
• Changing setpoint and operating mode
• Viewing gauge, sensor, and hourmeter readings
• Initiating Defrost y les
• Viewing and learing alarms
The mi ropro essor omponents are lo ated inside the
ontrol box, whi h is lo ated inside the lower roadside
servi e door. The mi ropro essor is onne ted to a
Human Ma hine Interfa e (HMI) Control Panel. It is
used to operate the unit. The HMI ontrol panel is
mounted on the fa e of the ontrol box. It is learly
visible through an opening in the lower roadside
servi e door.
Refer to the SR-3 Trailer Single Temperature SL-400e,
SLX/SLXe/SLXi Series Diagnosti Manual TK 56487 for
omplete operation and servi e information about the
SR-3 Control System and the related omponents.
Refer to the Operator’s Manual for information about
basi unit operation.
CYCLE-SENTRY™ Start-Stop Controls
The CYCLE-SENTRY Start-Stop fuel saving system
provides optimum operating e onomy.
WWAARRNNIINNGG
RRiisskk ooff IInnjjuurryy!!
TThhee uunniitt aann ssttaarrtt aatt aannyy ttiimmee wwiitthhoouutt wwaarrnniinngg..
PPrreessss tthhee OOFFFF kkeeyy oonn tthhee HHMMII oonnttrrooll ppaanneell aanndd
ppllaa ee tthhee mmii rroopprroo eessssoorr OOnn//OOffff sswwiitt hh iinn tthhee OOffff
ppoossiittiioonn bbeeffoorree iinnssppee ttiinngg oorr sseerrvvii iinngg aannyy ppaarrtt ooff
tthhee uunniitt..
When CYCLE-SENTRY Mode is sele ted, the unit will
start and stop automati ally to maintain setpoint, keep
the engine warm, and the battery harged. When
Continuous Mode is sele ted, the unit starts
automati ally and runs ontinuously to maintain
setpoint and provide onstant airflow.
NNoottee The SR-3 Controller provides a wide range of
control and programming flexibility. However,
pre-programming of the unit controller may
prohibit operation in certain temperature ranges
within some modes and may also prohibit
certain modes of operation. Refer to the SR-3
Trailer Single Temperature SL-400e, SLX/SLXe/
SLXi Series Diagnostic Manual TK 56487 for
information about controller programming.
In CYCLE-SENTRY, if the blo k temperature falls below
30 F (-1 C), the engine will start and run until the blo k
temperature is above 90 F (32 C). If the battery voltage
falls to the programmed limit sele ted by CYCLE-
SENTRY Battery Voltage (typi ally 12.6 volts) and
Diesel CYCLE-SENTRY mode is sele ted, the engine
will start and run until the harge rate falls below that
programmed by CYCLE-SENTRY Amps (typi ally 2
amperes).
Features of the CYCLE-SENTRY system are:
• Offers either CYCLE-SENTRY or Continuous Run
operation.
• Controller regulated all season temperature
ontrol.
• Maintains minimum engine temperature in low
ambient onditions.
• Battery Sentry keeps batteries fully harged during
unit operation.
• Variable preheat time.
• Preheat indi ator buzzer.
Data Logging
There are two separate data loggers. The data is
downloaded through one of the data ports using a flash
drive or a PC and WinTra software.
UUnniitt DDeess rriippttiioonn

20 TK 56433-5-MM-EN
Figure 3. HMI Controller and Data Ports
1. CargoWatch Port
2. USB Port
SSeerrvvii eeWWaatt hh™™:: Servi eWat h is standard
equipment. It re ords operating events, alarm odes,
and ompartment temperatures as they o ur and at
preset intervals. This information is typi ally used to
analyze unit performan e. Use a USB port to download
the Servi eWat h data.
IImmppoorrttaanntt A ServiceWatch download can be helpful
when diagnosing a problem in a unit with
an SR-3 Controller. Therefore, it is
recommended that a ServiceWatch
download be performed to help diagnose a
problem. A ServiceWatch download must
be preformed before contacting the
Thermo King Service Department for
assistance in diagnosing a problem. Refer
to the SR-3 Trailer Single Temperature SL-
400e, SLX/SLXe/SLXi Series Diagnostic
Manual TK 56487 for information about
downloading the ServiceWatch Data
Logger and viewing the data.
CCaarrggooWWaatt hh™™:: CargoWat h data logging requires the
installation of optional sensors. Up to six temperature
sensor/probes and four door swit hes an be installed.
CargoWat h also logs the setpoint. Use the USB Port to
download the CargoWat h data. If optional
temperature sensors are installed, the readings are
displayed as Datalogger Sensor (1-6) Temperature in
the sensor readings. See the appropriate Diagnosti or
Operator’s Manual for more information.
A printer an also be used to print a report of the
optional sensor readings. See the appropriate
Diagnosti or Operator’s Manual for more information.
UUSSBB PPoorrtt:: A Universal Serial Bus (USB) port is
provided on ertain units. If installed, it is lo ated on
the unit ontrol panel. Standard USB flash drives that
have been programmed with WinTra an be used. Use
of a flash drive eliminates the need for an on-site
omputer and does not require ables.
IImmppoorrttaanntt The flash drive must be properly
configured and the desired features must
be enabled using WinTrac software.
Using a properly onfigured and enabled flash drive,
the following fun tions may be available:
• Download the Servi eWat h Data Logger
• Download the CargoWat h Data Logger
• Flash load Base Controller Software
• Flash load HMI Control Panel Software
• Send OptiSet Plus Files
• Retrieve OptiSet Plus Files
CCaarrggooWWaatt hh PPoorrtt:: The CargoWat h port is used to
download the CargoWat h Data Logger and to flash
load software to the HMI Control Panel. It is lo ated on
the Control Panel.
SSeerrvvii eeWWaatt hh PPoorrtt:: The Servi eWat h port is used to
download the Servi eWat h data logger and to flash
load software to the Base Controller. It is lo ated inside
the engine bay above the engine.
PPrriinntteerr PPoorrtt:: This port is used to print trip re ords from
the CargoWat h Data Logger. It is lo ated inside the
ontrol box.
TK BlueBox
The TK BlueBox is standard equipment on this unit.
This is a wireless ommuni ation platform for the SR-3/
SR-4 Controller that offers fleet owners the ability to
monitor their refrigerated units. Cellular, GPS, and
Bluetooth apabilities ommuni ate with Thermo
King’s web-based Tra King™ appli ation, and
Bluetooth with the TK Reefer App. A third party
interfa e with the TK BlueBox offers a gateway for
telemati s providers to ommuni ate with the Thermo
King unit. Refer to the appli able TK BlueBox
Diagnosti Manual (TK 56391 or TK 56469) for more
information about the TK BlueBox.
CargoLink™
CargoLink™ is a wireless sensor system. The main
omponents are the oordinator module, inter onne t
harness, antenna, and wireless sensors. The
oordinator module re eives information from the
wireless sensors through the antenna, and
ommuni ates with the ontroller through the
inter onne t harness. Currently, only wireless door
swit hes are available. Other wireless sensors will be
available in the future. Refer to the Tru k and Trailer
Edition CargoLink Installation Manual (TK 55151) for
information about installing the CargoLink system and
sensors, and troubleshooting problems with the
system.
UUnniitt DDeess rriippttiioonn