Trane Technologies THERMO KING C Series User manual

Revision A
May 2022 TTKK 6611996655--1188--MMMM--EENN
C-Series
C-150/ C-150 10/ C-150 MAX 10/ C-150 MAX 30
C-250/ C-250 10/ C-250 MAX 10/ C-250 MAX 30
C-350/ C-350 10/ C-350 MAX 10/ C-350 MAX 30
C-450/ C-450 10/ C-450 MAX 10/ C-450 MAX 30
C-550/ C-550 10/ C-550 MAX 10/ C-550 MAX 30
C-650/ C-650 10/ C-650 MAX 10/ C-650 MAX 30
C-750 MAX 10/ C-750 MAX 30
R-134a/R-404A/R452A
Operator’s Manual

2TK 61965-18-MM-EN
Introduction
This manual is pu lished for informational purposes only and the
information furnished herein should not e considered as all-inclusive or
meant to cover all contingencies. If more information is required, consult
your Thermo King Service Directory for the location and telephone num er
of the local dealer.
TThheerrmmoo KKiinngg’’ss wwaarrrraannttyy sshhaallll nnoott aappppllyy ttoo aannyy eeqquuiippmmeenntt wwhhiicchh hhaass
eeeenn ““ssoo iinnssttaalllleedd,, mmaaiinnttaaiinneedd,, rreeppaaiirreedd oorr aalltteerreedd aass,, iinn tthhee
mmaannuuffaaccttuurreerr’’ss jjuuddggmmeenntt,, ttoo aaffffeecctt 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..
There is nothing complicated a out operating and maintaining your Thermo
King unit, ut a few minutes studying this manual will e time well spent.
Performing pre-trip checks and enroute inspections on a regular asis will
minimize operating pro lems. A regular maintenance program will also help
to keep your unit in top operating condition. If factory recommended
procedures are followed, you will find that you have purchased the most
efficient and dependa le temperature control system availa le.
All service requirements, major and minor, should e handled y a Thermo
King dealer for four very important reasons:
• They are equipped with the factory recommended tools to perform all
service functions.
• They have factory trained and certified technicians.
• They have genuine Thermo King replacement parts.
• The warranty on your new unit is valid only when the repair and
replacement of component parts is performed y an authorized Thermo
King dealer.

TK 61965-18-MM-EN 3
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IInnttrroodduuccttiioonn

4TK 61965-18-MM-EN
SSaaffeettyy PPrreeccaauuttiioonnss .................................................................................... 66
Danger, Warning, Caution, and Notice. . . . . . . . . . . . . . . . . . . . . . . . 6
General Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Auto Start/Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Refrigerant Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Refrigerant Oil Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
FirstAid.................................................... 9
Safety Decals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
UUnniitt DDeessccrriippttiioonn.. .. .. .. .............. .. .. .. .... .. .. ........ ........ .. .. ........ ........ ........ .. .. .... 1133
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Standard Unit Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electronic Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Description of the Electronic Control System . . . . . . . . . . . . . 15
Unit Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OOppeerraattiioonn IInnssttrruuccttiioonnss ........ .. ........ ........ .. .. .... .. .. .. .............. .. .. .... .. .. .. ...... 1199
Weekly Pre-Trip Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Starting the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Standard Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Entering the setpoint temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Initializing the evaporator manual defrost cycle . . . . . . . . . . . . . . 22
Alarms.................................................... 23
Manual start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Auto start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alarm Code Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table of Contents

TK 61965-18-MM-EN 5
Clearing Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Viewing Information Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Main Manu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Information Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
After Start Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PPrreettrriipp IInnssppeeccttiioonn ((BBeeffoorree LLooaaddiinngg RReeffrriiggeerraatteedd
CCaarrggoo)) ........ ........ .. ........ .. ........ ........ .. .. .... .. .. .. .............. .. .. .. .... .. .. ........ ........ .. .. .. 2299
UUnniitt OOppeerraattiioonn aanndd LLooaaddiinngg PPrroocceedduurreess....................................3300
Unit Operation (Before Loading Refrigerated Cargo) . . . . . . . . . . 30
Loading Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Enroute Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Inspection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Inspection Trou leshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
SSppeecciiffiiccaattiioonnss .... ........ .. .. .. .... .. .. .............. .. .. .. .............. .. ........ .. .. .............. .. .. 3344
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
IInnssppeeccttiioonn aanndd SSeerrvviiccee IInntteerrvvaallss .... .. .............. .. ........ .. .. .............. .. .. 3388
Weekly Pre-Trip Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Weekly Pretrip Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Weekly Post-Trip Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Inspection and Service Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Service Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
RReeccoovveerr RReeffrriiggeerraanntt.... .. .... .. .. .. .............. .. .. .. .... .. .. ........ ........ .. .. .... .. .. .. ...... 4411
TTaa llee ooff CCoonntteennttss

6TK 61965-18-MM-EN
Safety Precautions
Danger Warning Caution and Notice
Thermo King®recommends that all service e performed y a Thermo King
dealer and to e 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
o servance of these precautions. The four types of advisories are defined as
follows:
DDAANNGGEERR
HHaazzaarrdd!!
Indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WWAARRNNIINNGG
HHaazzaarrdd!!
Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CCAAUUTTIIOONN
HHaazzaarrdd!!
Indicates a potentially hazardous situation which, if not avoided, could
result in minor or moderate injury and unsafe practices.
NN TTIICCEE
HHaazzaarrdd!!
Indicates a situation that could result in equipment or property-damage
only accidents.

TK 61965-18-MM-EN 7
General Practices
DDAANNGGEERR
RRiisskk ooff IInnjjuurryy!!
Keep your hands, clothing, and tools clear of fans and/or elts when
working on a unit that is running or when opening or closing compressor
service valves. Loose clothing might entangle moving pulleys or elts,
causing serious injury or possi le death.
CCAAUUTTIIOONN
SShhaarrpp EEddggeess!!
Exposed coil fins can cause lacerations. Service work on the evaporator or
condenser coils should only e accomplished y a certified Thermo King
technician.
Auto Start/Stop
CCAAUUTTIIOONN
RRiisskk ooff IInnjjuurryy!!
The unit can start and run automatically any time the unit is turned on. Turn
the unit On/Off switch Off efore doing inspections or working on any part
of the unit. Please note that only Qualified and Certified personnel should
attempt to service your Thermo King unit.
CCAAUUTTIIOONN
RRiisskk ooff IInnjjuurryy!!
Some vehicles may e equipped with an Auto Start-Stop feature allowing
the engine to restart automatically if required y the system. Refer to your
vehicle’s operator’s manual regarding the Auto Start-Stop safety warnings
efore accessing the engine compartment. Failure to do so may result in
serious injuries due to automatic engine restart.
Electrical Hazards
NN TTIICCEE
EEqquuiippmmeenntt DDaammaaggee!!
Do not connect other manufacturer’s equipment or accessories to the unit
or to the TK Batteries unless approved y Thermo King. Failure to do so can
result in severe damage to equipment and void the warranty.
SSaaffeettyy PPrreeccaauuttiioonnss

8TK 61965-18-MM-EN
Refrigerant Hazards
Although fluorocar on refrigerants (R-404A/R-452A and R-134a) are
classified as safe, o serve caution when working with refrigerants or around
areas where they are eing used in the servicing of your unit.
DDAANNGGEERR
HHaazzaarrddoouuss GGaasseess -- PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE))
RReeqquuiirreedd!!
Refrigerant in the presence of an open flame, spark, or electrical short
produces toxic gases that are severe respiratory irritants which can cause
serious injury or possi le death. When working with or around hazardous
chemicals, ALWAYS refer to appropriate Material Data Safety Sheets
(MSDS) and OSHA/GHS (Glo al Harmonized System of Classification and
La elling of Chemicals) guidelines for information on allowa le personal
exposure levels, proper respiratory protection, and handling instructions.
DDAANNGGEERR
RReeffrriiggeerraanntt VVaappoorr HHaazzaarrdd!!
Do not inhale refrigerant. Use caution when working with refrigerant or a
refrigeration system in any confined area with a limited air supply.
Refrigerant displaces air and can cause oxygen depletion, resulting in
suffocation and possi le death. When working with or around hazardous
chemicals, ALWAYS refer to appropriate Material Data Safety Sheets
(MSDS) and OSHA/GHS (Glo al Harmonized System of Classification and
La elling of Chemicals) guidelines for information on allowa le personal
exposure levels, proper respiratory protection, and handling instructions.
WWAARRNNIINNGG
PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) RReeqquuiirreedd!!
Refrigerant in a liquid state evaporates rapidly when exposed to the
atmosphere, freezing anything it contacts. Wear utyl lined gloves and
other clothing and eye wear when handling refrigerant to help prevent
frost ite. When working with or around hazardous chemicals, ALWAYS
refer to appropriate Material Data Safety Sheets (MSDS) and OSHA/GHS
(Glo al Harmonized System of Classification and La elling of Chemicals)
guidelines for information on allowa le personal exposure levels, proper
respiratory protection, and handling instructions.
SSaaffeettyy PPrreeccaauuttiioonnss

TK 61965-18-MM-EN 9
Refrigerant Oil Hazards
O serve the following when working with or around refrigerant oil.
WWAARRNNIINNGG
PPeerrssoonnaall PPrrootteeccttiivvee EEqquuiippmmeenntt ((PPPPEE)) RReeqquuiirreedd!!
Protect your eyes from contact with refrigerant oil. The oil can cause serious
eye injuries. Protect skin and clothing from prolonged or repeated contact
with refrigerant oil. To prevent irritation, wash your hands and clothing
thoroughly after handling the oil. Ru er gloves are recommended. When
working with or around hazardous chemicals, ALWAYS refer to appropriate
Material Data Safety Sheets (MSDS) and OSHA/GHS (Glo al Harmonized
System of Classification and La elling of Chemicals) guidelines for
information on allowa le personal exposure levels, proper respiratory
protection, and handling instructions.
First Aid
RREEFFRRIIGGEERRAANNTT
•EEyyeess:: For contact with liquid, immediately flush eyes with large amounts
of water and get prompt medical attention.
•SSkkiinn:: Flush area with large amounts of warm water. Do not apply heat.
Remove contaminated clothing and shoes. Wrap urns with dry, sterile,
ulky dressing to protect from infection. Get prompt medical attention.
Wash contaminated clothing efore reuse.
•IInnhhaallaattiioonn:: Move victim to fresh air and use Cardio Pulmonary
Resuscitation (CPR) or mouth-to-mouth resuscitation to restore
reathing, if necessary. Stay with victim until emergency personnel
arrive.
•FFrroosstt BBiittee:: In the event of frost ite , the o jectives of First Aid are to
protect the frozen area from further injury, warm the affected area
rapidly, and to maintain respiration.
RREEFFRRIIGGEERRAANNTT OOIILL
•EEyyeess:: Immediately flush with large amounts of water for at least 15
minutes. Get prompt medical attention.
•SSkkiinn:: Remove contaminated clothing. Wash thoroughly with soap and
water. Get medical attention if irritation persists.
•IInnhhaallaattiioonn:: Move victim to fresh air and use Cardio Pulmonary
Resuscitation (CPR) or mouth-to-mouth resuscitation to restore
SSaaffeettyy PPrreeccaauuttiioonnss

10 TK 61965-18-MM-EN
reathing, if necessary. Stay with victim until emergency personnel
arrive.
•IInnggeessttiioonn:: Do not induce vomiting. Immediately contact local poison
control center or physician.
EENNGGIINNEE CCOOOOLLAANNTT
•EEyyeess:: Immediately flush with large amounts of water for at least 15
minutes. Get prompt medical attention.
•SSkkiinn:: Remove contaminated clothing. Wash thoroughly with soap and
water. Get medical attention if irritation persists.
•IInnggeessttiioonn:: Do not induce vomiting. Immediately contact local poison
control center or physician.
BBAATTTTEERRYY AACCIIDD
•EEyyeess:: Immediately flush with large amounts of water for at least 15
minutes. Get prompt medical attention. Wash skin with soap and water.
•SSkkiinn:: Immediately remove contaminated clothing. Wash skin with large
volumes of water, for at least 15 minutes. Wash skin with soap and
water. Do not apply fatty compounds. Seek immediate medical
assistance.
•IInnhhaallaattiioonn:: Provide fresh air. Rinse mouth and nose with water. Seek
immediate medical assistance.
•IInnggeessttiioonn:: If the injured person is fully conscious: make the person drink
extensive amounts of milk. Do not induce vomiting. Take the injured
person immediately to a hospital.
EELLEECCTTRRIICCAALL SSHHOOCCKK
Take IMMEDIATE action after a person has received an electrical shock. Get
quick medical assistance, if possi le.
The source of the shock must e quickly stopped, y either shutting off the
power or removing the victim. If the power cannot e shut off, the wire
should e cut with an non-conductive tool, such as a wood-handle axe or
thickly insulated ca le cutters. Rescuers should wear insulated gloves and
safety glasses, and avoid looking at wires eing cut. The ensuing flash can
cause urns and lindness.
If the victim must e removed from a live circuit, pull the victim away with a
non-conductive material. Use wood, rope, a elt or coat to pull or push the
victim away from the current. DO NOT TOUCH the victim. You will receive a
shock from current flowing through the victim’s ody. After separating the
victim from power source, immediately check for signs of a pulse and
respiration. If no pulse is present, start Cardio Pulmonary Resuscitation
SSaaffeettyy PPrreeccaauuttiioonnss

TK 61965-18-MM-EN 11
(CPR). If a pulse is present, respiration might e restored y using mouth-to-
mouth resuscitation. Call for emergency medical assistance.
AASSPPHHYYXXIIAATTIIOONN
Move victim to fresh air and use Cardio Pulmonary Resuscitation (CPR) or
mouth-to-mouth resuscitation to restore reathing, if necessary. Stay with
victim until emergency personnel arrive.
Safety Decals
Safety decals and locations vary depending on model.
Figure 1. Fan Caution
SSaaffeettyy PPrreeccaauuttiioonnss

12 TK 61965-18-MM-EN
Figure 2. Automatic Start Caution
SSaaffeettyy PPrreeccaauuttiioonnss

TK 61965-18-MM-EN 13
Unit Description
Introduction
Figure 3. Unit — Example
BEF625
The Thermo King truck refrigeration systems are two-piece nose/roof-
mounted units. The compressor is powered from the vehicle engine via a
elt. Refrigeration hoses and tu ing are used to connect the unit to the
compressor.
The Thermo King refrigeration units are designed for fresh and frozen
applications on vans and small trucks.
The control circuits operate on 12V or 24VDC supplied y the truck atteries
for over-the-road operation. The refrigeration system is protected y a high
pressure cutout switch and a low pressure cutout switch.
The digital controller with a programma le microprocessor controls unit
operation and quickly and accurately shows information on the display.
Compressor operation is controlled y the thermostat, energizing the clutch
during engine operation.
C-Series Units Include:
• C-150, C-150 10, C-150 MAX 10 and C-150 MAX 30
• C-250, C-250 10, C-250 MAX 10 and C-250 MAX 30

14 TK 61965-18-MM-EN
• C-350, C-350 10, C-350 MAX 10 and C-350 MAX 30
• C-450, C-450 10, C-450 MAX 10 and C-450 MAX 30
• C-550, C-550 10, C-550 MAX 10 and C-550 MAX 30
• C-650, C-650 10, C-650 MAX 10 and C-650 MAX 30
• C-750 MAX 10 and C-750 MAX 30
There are two asic models:
•CC--115500,, CC--225500,, CC--335500 aanndd CC--445500:: Cool with only vehicle powered engine
driven compressor operation.
•MMooddeell 1100:: Cool and Defrost with only vehicle powered engine driven
compressor operation.
•MMooddeell 3300:: Hot gas heat, Cool, and Defrost with only vehicle powered
engine driven compressor operation.
Standard Unit Features
•CCoonnddeennsseerr - Lightweight design, easy to service with automotive grade
polypropylene cover.
•EEvvaappoorraattoorr - Ultra slim design, aluminum construction automotive
grade Acrylonitrile Butadiene Styrene (ABS) cover.
•IInn--ccaa ccoonnttrroolllleerr:: CCSSRR
•DDiiggiittaall tthheerrmmoommeetteerr
•EElleeccttrroonniicc tthheerrmmoossttaatt - adjusta le:
–R-134a without defrost: 0ºC to +22ºC
–R-134a with defrost: -10ºC to +22ºC
–R-404A: -32ºC to +22ºC
•HHoott ggaass aauuttoommaattiicc ddeeffrroosstt
•RRooaadd ccoommpprreessssoorr QQPP0088 (C–150 Unit)
•RRooaadd ccoommpprreessssoorr QQPP1133 (C-250 Unit)
•RRooaadd ccoommpprreessssoorr QQPP1155 (C–350 Unit)
•RRooaadd ccoommpprreessssoorr QQPP1166 (C-450 Unit)
•RReeffrriiggeerraanntt -- RR--113344aa,, RR--445522AA oorr RR--440044AA (depending on unit model).
UUnniitt DDeessccrriippttiioonn

TK 61965-18-MM-EN 15
Electronic Control System
Thermo King direct drive refrigeration units are composed of a condenser
unit, an evaporator unit, a vehicle compressor and a control panel (Inca
Control Box) which operates the unit. The Electronic Control System is
composed of an Electronic Control Module (located inside the condenser
unit) and the In-ca Control Box. This In-ca Control Box allows the truck
driver to operate the Thermo King refrigeration unit.
Figure 4. In-cab Control Box
BEF623
Description of the Electronic Control System
The Electronic Control System has the following characteristics:
• Auto Start
• Delayed Start
• Active Display
• Low Battery Voltage Alarm
• Battery voltage value display
• Unit Control without In-ca Control Box
• Manual or Automatic Defrost
• Return Air Temperature Sensor
• Setpoint Temperature Reading
AAuuttoo SSttaarrtt:: In case of power shut off, if the unit was on, the unit will come
ack on again when the power is re-started.
UUnniitt DDeessccrriippttiioonn

16 TK 61965-18-MM-EN
DDeellaayyeedd SSttaarrtt:: After an automatic start-up, the unit will remain inactive for
few seconds.
AAccttiivvee DDiissppllaayy:: The In-ca Control Box display is always active except when
the unit is disconnected (no power) or when the unit is connected ut has
een manually switched off from the In-ca Control Box (when there is no
active alarm).
TToottaall HHoouurrmmeetteerr:: Total num er of hours the unit is in operation.
VVeehhiiccllee CCoommpprreessssoorr HHoouurrmmeetteerr:: Num er of hours the unit has een
operating on-the-road.
LLooww BBaatttteerryy VVoollttaaggee AAllaarrmm:: Disconnects the unit when the attery voltage
is too low.
BBaatttteerryy vvoollttaaggee vvaalluuee ddiissppllaayy:: The attery voltage value is displayed in the
information menu.
UUnniitt CCoonnttrrooll wwiitthhoouutt IInn--ccaa CCoonnttrrooll BBooxx:: The unit can also e operated y
the Electronic Control System without the In-ca Control Box, under
conditions selected y the In-ca Control Box efore it is disconnected.
MMaannuuaall oorr AAuuttoommaattiicc ddeeffrroosstt:: It is possi le to choose etween manual or
automatic defrost and to select the defrost time interval in auto defrost
mode.
RReettuurrnn AAiirr TTeemmppeerraattuurree SSeennssoorr:: On-screen reading of the temperature in
the load compartment.
SSeettppooiinntt TTeemmppeerraattuurree RReeaaddiinngg:: On-Screen Setpoint Temperature
Reading.
UUnniitt DDeessccrriippttiioonn

TK 61965-18-MM-EN 17
Unit Controls
WWAARRNNIINNGG
RRiisskk ooff IInnjjuurryy!!
Never operate the unit unless you completely understand the controls;
otherwise serious injury may occur.
Figure 5. In-cab Control Box — Display Keys and Symbols
SET
BEF624
°F
410 692
57111 883
1. DDiissppllaayy.. It is always active except when the unit is disconnected (no
power) or when the unit is connected ut has een manually switched off
from the In-ca Control Box. It normally displays the return air
temperature.
2. OONN//OOFFFF KKeeyy.. This key is used to start/stop the unit y holding the key
down for at least 1 second. Single press for exit to the previous level
menu.
3. SSeett KKeeyy.. Selects prompt screens and information screens. Single press:
enter the next level menu.
4. UUpp KKeeyy.. Is used to increase the setpoint temperature, display values, and
for menu scroll up.
UUnniitt DDeessccrriippttiioonn

18 TK 61965-18-MM-EN
5. DDoowwnn KKeeyy.. Is used to reduce the setpoint temperature, display values,
and for menu scroll down.
6. CCooooll SSyymm ooll.. The unit is cooling.
7. HHeeaatt SSyymm ooll.. The unit is heating.
8. ººCC//ººFF DDiissppllaayy.. Indicates whether the on-screen temperature reading is in
degrees Celsius (ºC) or degrees Fahrenheit (ºF).
9. AAllaarrmm SSyymm ooll.. Indicates that there is an alarm in the system.
10. DDeeffrroosstt SSyymm ooll.. Indicates the evaporator unit is in Defrost Mode.
11. DDoott SSyymm ooll ((ddeecciimmaall)).. Indicates power presence, only when unit is off.
UUnniitt DDeessccrriippttiioonn

TK 61965-18-MM-EN 19
Operation Instructions
Weekly Pre-Trip Inspections
The following weekly pre-trip inspection should e completed efore
loading the truck. Weekly inspection does not replace the regular
maintenance inspections (see the scheduled maintenance inspection
section); however, it is an important part of the preventive maintenance
program to avoid operating pro lems efore they occur.
LLeeaakkss.. Inspect for refrigerant leaks and worn coolant lines.
BBaatttteerryy.. Terminals should e properly tightened and show no signs of
corrosion.
BBeellttss.. Check for cracks, wear, and proper elt tension.
MMoouunnttiinngg BBrraacckkeett.. Ensure that olts are fully tightened.
EElleeccttrriiccaall ssyysstteemm.. Electrical connections should e securely fastened. Wires
and terminals should show no signs of corrosion, cracks or dampness.
SSttrruuccttuurraall.. Visually check for physical damage.
CCooiillss.. The condenser and evaporator coils should e clean and free of
de ris. Washing with clean water should e sufficient. The use of cleaning
agents or detergents is strongly discouraged due to the possi ility of
degradation of the construction. If using a power washer, the nozzle
pressure should not exceed 600 psi (41 ar). For the est results, spray the
coil perpendicular to the face of the coil. The spray nozzle should e kept
etween 1 inch and 3 inches (25 to 75 millimetres) from the coil surface. If
necessary to use a chemical cleaner or detergent use a cleaner that does not
contain any hydrofluoric acids and is etween 7 and 8 on the pH scale.
Ensure dilution instructions provided y the detergent supplier are followed.
In case of dou t a out the compati ility of the detergent with the type of
materials listed a ove, always ask the supplier a written confirmation of the
compati ility. Should a chemical cleaner e required, it is MANDATORY that
all components are thoroughly rinsed with water even if the instructions of
the cleaner specify that it is a “no rinse” cleaner. Failure to comply with
a ove mentioned guidelines will lead to a shortened life of the equipment to
an indetermina le degree. The repeated transportation of meat and fish
waste can cause extensive corrosion to the evaporator coils and evaporator
section tu ing over time due to ammonia formation and can reduce the
lifespan of the coils. Appropriate additional measures should e taken to
protect the coils against the aggressive corrosion that can result from
transportation of such products.

20 TK 61965-18-MM-EN
LLooaadd CCoommppaarrttmmeenntt.. Inspect the interior and exterior of the truck for any
damage. Any damage to the walls or insulation should e repaired.
DDeeffrroosstt DDrraaiinnss.. Check the defrost drain hoses and fittings to ensure they are
not locked.
DDoooorrss.. Ensure that doors and weather seals are in good condition and seal
hermetically.
SSiigghhtt GGllaassss.. Check that the refrigerant charge sight glass on the running
unit is totally full (the cargo compartment temperature must e
approximately 0ºC).
Starting the unit
EEnnggiinnee OOppeerraattiioonn
1. Start the truck engine. The Dot Sym ol will remain lit.
SET
BEF610
2. Press the On/Off switch located in the In-ca Control Box for at least 1
second. The In-ca Control Box display will e activated.
3. Check the setpoint, and adjust if needed.
NNoottee:: Regular monitoring of the unit is recommended, the frequency of this
monitoring will depend on the type of cargo.
Standard Display
This is the display that appears when the ON/OFF key is pressed 1 second
and the unit started. It normally displays the return air temperature and the
current operating mode with the appropriate sym ol.
OOppeerraattiioonn IInnssttrruuccttiioonnss