Mitsubishi TEJ50AE User manual

MITSUBISHI TRANSPORT REFRIGERATION UNIT
TEJ50AE
TEJ50AEM
This operation manual is
intended to provide users
with a good knowledge to
use Mitsubishi Refrigeration
Unit safely.
Operate or service the
refrigeration unit only after
you have read this manual
and understand its
contents.
Carefully store this manual
immediately available for
your reference when you
need it.
OPERATION MANUALOPERATION MANUAL
Original Instructions
A
YEAR:2021
TSJ012A242

- I -
- I -
Thank you for your purchase of Mitsubishi Transport
Refrigeration Unit.
Purpose of use and application
This Refrigeration Unit is intended to carry the cargo (with the exception of
volatile, inflammable, hazardous and corrosive matters) on a transportation
vehicle, keeping the inside container temperature at a certain degree.
If the Refrigeration Unit is used for any purposes other than this purpose, it
may cause accidents or damages.
Important information
For questions or information, contact your nearest dealer.
● Be sure to follow the contents described in this manual in order to protect
yourself and other people from potential risks of this refrigeration unit and
to prevent it from getting damaged.
● We are not able to foresee all potential risks of this refrigeration unit or
dangers due to mishandling by the customers. Therefore, it is necessary
to take measures for safety in addition to the items described in this
manual or on warning labels.
● For the following works, contact your nearest dealer. If those works were
● This product contains fluorinated greenhouse gases.
•
Refrigerant:R410A(GWP(Global Warming Potential)=2088)
Refer to the model name plate on unit about weight of fluorinated
greenhouse gases and CO2equivalent. ( Refer to pages 23.)
carried out by customer, the refrigeration unit may lose its performance
and we may not be able to ensure the safety of the customer.
(a) Installation, modification, specification change and disposal of the
refrigeration unit
(b) Maintenance of electric appliances
(c) Abnormal treatments which are not described in this manual

- II -
- II -
Operation manual
● This operation manual is prepared for people who speaks English. In case
that person whose native language is not English handles this refrigeration
unit, he or she must be instructed on safety by the customer. Furthermore,
the warning labels described in their native language must be prepared
and stuck on the proper places.
● This operation manual is copyrighted and all rights are reserved by our
company. The drawings and technical information described in this
manual may not, in whole or part, be published, copied, translated for
the purposes other than above-mentioned and reduced to any electronic
medium or machine-readable form without prior written consent with our
company.
● This manual also contains the explanation of optional specification.
● The contents of this operation manual may differ from that of the
refrigeration unit used by a customer due to specification change.
● The contents described in this operation manual may be changed without
a prior notice.
● When transferring or lending the refrigeration unit, attach this operation
manual together with the unit so that the operators should be able to have
a good knowledge on safety.
● Keep this operation manual in the vehicle so that it is available for your
reference when you need it.
● Unless otherwise noted, "right" and "left" directions are given as viewed
from the front of the refrigeration unit.
For disposal
Contact your nearest dealer when disposing the refrigeration unit. Observe
the applicable laws and regulations in your country to dispose refrigerants
and cooling water.

- III -
- III -
Information on the models
This operation manual describes how to use the following models.
(1) Standard system for single refrigeration compartment
TEJ50AE
(2) 2-evaporator system for two refrigeration compartments
with heat pump refrigerant cycle
TEJ50AEM
The power system is not our product.
For details about how to handle the power system, please read the instruction
manual for power system.
This instruction manual contains features which may not function depending
on the specications of power supply system.
Please contact the nearest dealer and inform the details.

- IV -
Purpose of use and application--I
Important information-------------I
Operation manual ---------------- II
For disposal ----------------------- II
Information on the models ----- III
Contents-------------------------- IV
1 Function of Refrigeration
Unit--------------------------1
2 Name of each part --------2
Arrangement plan for
main parts ------------------------- 2
Refrigeration unit ----------------- 4
Rear evaporator unit
(2-compartment model)---------- 6
Cabin controller------------------- 7
LCD display area ----------------- 8
Protective devices-------------- 10
3 Precaution for safety---- 11
Signs on safety ----------------- 11
Precautions --------------------- 12
Handling of high-voltages---------- 12
General precautions ---------------- 14
During and after the operation ---- 15
Inspection/Cleaning/Repair-------- 16
Loading ------------------------------ 17
Handling of electric equipment
and power codes ------------------- 18
Reinstallation of refrigeration
unit------------------------------------ 19
Modification of refrigeration unit
and specification change ---------- 20
Power supply equipment ---------- 20
Emergency measures ---------- 21
Handling of warning labels ---- 23
Prevention of start during
inspection work----------------- 25
Clothing and protective
equipment ----------------------- 25
When abnormal conditions are
detected ------------------------- 25
For emergency------------------ 25
4 Initial setting ------------- 26
Display and function of
main menu ---------------------- 26
Language setting mode ------------ 27
Display and function of
Sub-menu ----------------------- 28
Setting the calendar and clock
(Date, Month, Year) ------------- 31
Displaying the maintenance
information ---------------------- 33
Setting the defrost interval ---- 35
Setting LCD backlight---------- 36
5 Operation----------------- 38
Selecting the operation
pattern (TEJ50AE only) -------- 39
Starting the operation---------- 41
Contents

- V -
Stopping the operation -------- 41
Normal stop procedure ------------ 41
Emergency stop procedure ------- 41
Suspending (sleep) the compartment
operation (2-compartment model)
-- 42
Setting the temperature ------- 43
Setting the preset temperature---- 44
Manual defrost operation------ 45
Starting the manual defrost
operation----------------------------- 45
Ending the manual defrost
operation----------------------------- 45
Setting the ON timer ----------- 46
Setting the OFF timer ---------- 48
6 Loading------------------- 50
Preparation before loading ---- 50
Loading and unloading -------- 51
Loading procedure------------------ 51
Unloading ---------------------------- 52
7 Inspection ---------------- 53
Precautions for inspection ---- 53
Daily inspection----------------- 55
Inspection of condenser coil ------ 55
Periodic inspection------------- 56
Periodic inspection check
sheet ----------------------------- 57
Refrigerant and refrigerating
machine oil ---------------------- 58
Climate class ------------------- 58
8 Cautions for use --------- 59
When operating at a low inside
container temperature for a long
period of time:----------------------- 59
When stopping the refrigeration
unit for a long period of time:------ 59
9 For emergency ---------- 60
Alarm display ------------------- 60
Switching "Normal display" and
"Alarm display" ----------------- 60
Switching from
"Normal display screen" to
"Alarm display mode" -------------- 60
Switching from
"Alarm display mode" to
"Normal display screen" ----------- 60
Countermeasures--------------- 61
When you contact your nearest
dealer--------------------------------- 61
Resuming operation after an
emergency stop ---------------- 61
List of alarm codes ------------- 62

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1 Function of Refrigeration Unit
This refrigeration unit has following functions.
(3) Defrosting operation function
This is the function to protect evaporator from frosting during cooling
operation and to prevent refrigerating power from decreasing.
There are following 2 methods to start defrosting operation.
1) Automatic defrosting operation
Defrosting starts automatically by the timer setting.
Refer to page 35 for defrosting timer setting.
2) Manual defrosting operation
Defrosting starts forcibly by pressing the switch of controller.
Refer to page 45 for how to operate.
As the defrosting operation is completed, the refrigeration unit returns to
the cooling operation.
Defrosting operation will not start when the evaporator temperature is
high even during the cooling operation.
(4) Timer operation function
This is the function to set starting time and stopping time of the
(1) High-efficiency operation control function
With this function, the unit operates at the maximum capacity till the
compartment temperature rises or drops to the setting temperature,
and then switches to the high-efficiency operation automatically.
This switching takes place automatically without operator intervention.
operation.
Refer to pages from 46 to 49 for how to set.
(2) Operation pattern selection function (TEJ50AE only)
This is the function to switch operation pattern (automatic start/stop
operation/continuous operation).
For the switching of operation pattern, refer to pages 39 and 40.

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5
2
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3
7
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4
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10
2 Name of each part
Arrangement plan for main parts
3
12
4
(To power system)
5
1
Refrigeration unit
4
Cabin controller
2
Control box (high voltage)
5
High voltage cable (orange color)
3
Compressor
• Layout could vary depending on vehicles, etc. Please check before use.
■TEJ50AE (Single compartment model)

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1
5
2
6
3
7
9
4
8
10
2 Name of each part
(To power system)
3
12
4
6
5
1
Refrigeration unit
4
Cabin controller
2
Control box (high voltage)
5
High voltage cable (orange color)
3
Compressor
6
Rear evaporator unit
• Layout could vary depending on vehicles, etc. Please check before use.
■TEJ50AEM (2-compartment model)

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2 Name of each part
1
2
3
4
5
9
8
7
6
Refrigeration unit
■Top view
■Front view
■Back view
1
Evaporator outlet
6
Condenser fan motor
2
Evaporator fan motor
7
Condenser coil
3
Dryer
8
Compressor
4
Evaporator coil
9
Control box
5
Expansion valve
• Form of components and specifications may very depending on models.
TEJ50AE

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2
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3
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9
4
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10
2 Name of each part
1
2
3
4
5
6
8
9
7
10
11
■Top view
■Front view
■Back view
1
Outlet
7
Inside heat exchanger
2
Inside fan motor
8
Outside heat exchanger
3
Dryer
9
Outside fan motor
4
Outside expansion valve
10
Compressor
5
Sight glass
11
Control box
6
Inside expansion valve
• Form of components and specifications may very depending on models.
TEJ50AEM

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2 Name of each part
Rear evaporator unit (2-compartment model)
1
Evaporator outlet
3
Evaporator coil
2
Evaporator fan motor
4
Expansion valve
View A
1
2
A
3 4
TES35EHP

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2 Name of each part
- 00 -
2 各部の名称
キャビンコントローラ
■ 2-compartment model
RUN/STOP switch Starts and stops the refrigeration unit.
MENU switch
PRESET switch
DEFROST switch
LCD
Starts the manual defrost.
FUNCTION switches
1 – 4
USB terminal (Type B) Used to read/write data.
RUN/STOP
F2
PRESET
MENU
DEFROST
F3 F4F1
. 7 20
▲
°
C
-
▼S-S⇔Cont
Set
Cooling
0 -.°
C
30
Selects the normal display screen or the menu display
screen.
Displays the screen while the refrigeration unit is stopped.
Selects the normal display screen or the preset display
screen.
Functions corresponding to respective setting screens
are allocated.
Displays the inside compartment temperature, setting
temperature, state of operation, etc.
720
A setting
°
C
.-
°
C
0 -
B setting
ACooling
. 30
6
10
°
C
.
°
C
0
B Heating
. 20
Set
Ret
3 4 6 75
1 2
6
1
2
3
4
5
6
7
Cabin controller

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3
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9
4
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2 Name of each part
- 00 -
2 各部の名称
Monitor displays following items corresponding to respective setting states.
The display items light or blink depending on the operation of respective functions.
Displays the allocation of function switch corresponding to the screen.
……Abnormal display
Lights or blinks when any error occurs.
……Display for the state of external communication.
Lights when the operation administration input, such as the remote
monitor device, etc., is turned ON.
……Displays for ON/OFF timer.
Lights when the ON timer and the OFF timer are set simultaneously.
……Displays the ON timer.
Lights when the ON timer operation is set.
……Displays for OFF timer.
Lights when the OFF timer operation is set.
* The timer display varies depending on the specifications of power
supply system.
Description of monitor display item
. 7 20
▲
°
C
-
▼S-S⇔Cont
Set
Cooling
0 -.°
C
30
■ 2-compartment model
720
A setting
°
C
.-
°
C
0 -
B setting
ACooling
. 30
6
10
°
C
.
°
C
0
B Heating
. 20
Set
Ret
1
2
543
1
1
2
86 10 97 11
2
LCD display area

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2 Name of each part
- 00 -
2 各部の名称
In case of 2-compartment model
Displays “A” (compartment) and the operation mode of compartment A.
Displays “B” (compartment) and the operation mode of compartment B.
Displays the inside compartment temperature at compartment A.
Displays the inside compartment temperature at compartment B.
Displays the setting temperature at compartment A.
Displays the setting temperature at compartment B.
6
7
8
9
10
11
Displays the inside compartment temperature.
Displays the setting temperature.
4
5
3Displays the operation modes.
<Display contents> Cooling, Heating, Defrost, Sleep, Stop and Fan.
* There is no display when Thermostat is OFF with evaporator
fan motor OFF.
Fan is displayed when Thermostat is OFF with evaporator fan
motor ON.
If temperature is out of adequate range, the Cooling or Heating
display blinks.

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2 Name of each part
Protective devices
This refrigeration unit is provided with the following protective devices to
ensure the safety of the operators.
(1) Panel, Fan guard
These devices prevent interference with the rotating section (fan motor)
during operation.
(2) Others
Protective devices such as high pressure switch are built-into the
refrigeration unit. For details, please read the instruction manual and
specification for power system.
People who handle this refrigeration unit are requested to understand the
functions of these protective devices completely to use it safely. Do not
deactivate these protective devices or do not operate the refrigeration unit
in the situation that the devices are inactivated. It is most important for
safety ensuring to keep functions of the protective devices in normal status
continuously.
- 11 -
3 Precaution for safety
In this section, necessary safety precautions are provided to prevent
accidents resulting in injuries or death, property damages and environment
pollution. Read and understand contents of the cautions before starting to
use this refrigeration unit.
Signs on safety
Signs and Symbols on safety in this operation manual and the warning labels
call the attention of the people who handle this refrigeration unit.
Signs on safety
Kinds Description
Indicates dangerous situation, which if mis-handled,
will result in death, serious injury, and serious
accident such as damage of the refrigeration unit.
Indicates potentially dangerous situation, which if
mis-handled, will result in minor injury or moderate
property damage.
Symbols
Symbols Description Symbols Description
Never perform. Always observe the
instructions.
Disconnect power supply
plug from socket.
Never touch.
Repairs and disassembly
must be done only by
qualified personnel.
Other symbol
Other advice for the refrigeration unit is described with the following symbol.
Kind Description
NOTE Useful information for function or performance of equipment
CAUTION
WARNING
DANGER
Indicates high and imminent potentially dangerous
situation, which if mis-handle, will result in death,
injury, or serious accident such as damage of the
refrigeration unit.

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3 Precaution for safety
In this section, necessary safety precautions are provided to prevent
accidents resulting in injuries or death, property damages and environment
pollution. Read and understand contents of the cautions before starting to
use this refrigeration unit.
Signs on safety
Signs and Symbols on safety in this operation manual and the warning labels
call the attention of the people who handle this refrigeration unit.
Signs on safety
Kinds Description
Indicates dangerous situation, which if mis-handled,
will result in death, serious injury, and serious
accident such as damage of the refrigeration unit.
Indicates potentially dangerous situation, which if
mis-handled, will result in minor injury or moderate
property damage.
Symbols
Symbols Description Symbols Description
Never perform. Always observe the
instructions.
Disconnect power supply
plug from socket.
Never touch.
Repairs and disassembly
must be done only by
qualified personnel.
Other symbol
Other advice for the refrigeration unit is described with the following symbol.
Kind Description
NOTE Useful information for function or performance of equipment
CAUTION
WARNING
DANGER
Indicates high and imminent potentially dangerous
situation, which if mis-handle, will result in death,
injury, or serious accident such as damage of the
refrigeration unit.

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3 Precaution for safety
Precautions
Handling of high-voltages
DANGER
When disassembling, removing, or replacing high-
voltage cables or components, serious burns or electric
shock may occur, causing serious personal injury or
death. Never disassemble, remove, and replace not
only the high voltage parts and cables, but also the
wiring connectors. The customer never disassembles,
removes, and replaces the high voltage system. For
details about the necessary maintenance, contact the
nearest dealer or the contact address stated in the
instruction manual for power system.
If a high-voltage cable or component is exposed, never
touch it.
• Otherwise, it may cause electric shock.
To prevent electric shock, do not touch any high-
voltage cable, connector, or high-voltage component
(control box or power system, etc.).
Please maintain a safe distance from the vehicle in case
a fire occurs from the refrigeration unit or power system.
Always use a fire extinguisher for electric fire when
doing fire fighting.
Do not use water or improper fire extinguishers, it may
result in serious injury or electric shock.
Do not touch the refrigeration unit, power system or
vehicle, in case of accident/damage to unit. Please
contact the nearest dealer and inform the details.
Leave the vehicle, contact the nearest dealer or the
contact address stated in the instruction manual for
power system, and inform that the electric drive type
refrigeration unit is installed.

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3 Precaution for safety
WARNING
A DC high-voltage of up to approx. 400 V is used for the
refrigeration unit. The high-voltage cables are identified
by the orange color.
Do not disassemble, disconnect, or replace 1High
voltage parts 2cables 3wiring connectors.
(To power system★)
Cabin controller
Refrigeration unit (★)
High voltage cable
(orange color) (★)
★: High voltage

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3 Precaution for safety
General precautions
Make sure that no one left inside the
container before closing the door.
• He or she might be frozen to death if
the refrigeration unit is operated with
someone inside.
Do not start the engine for drive in
poorly ventilated places such as
an indoor parking lot.
• Otherwise, it may cause carbon monoxide
poisoning due to exhaust gas.
Do not use the refrigeration unit in
the atmosphere which could cause
explosion at such place like
gas station.
• Otherwise, it may cause an
explosion or a fire.
When it is necessary to charge or retrieve the refrigerant or
refrigerating machine oil, be sure to consult the nearest dealer.
• Customer should refrain from attempting to do these on their own.
Otherwise, it could result in serious accident.
Be sure to use a device that emits radio waves (on-vehicle
radio device, etc.) within its setting range.
• When a device with an illegal output is used, this may cause the
refrigerator to malfunction or an accident.
The appliance is not to be used by persons (including
children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction.
• It is preferable to perform the monitoring so that a person (including
a child) who needs assistances does not use the refrigeration unit
alone.
Be sure to carry out the periodic inspections.
• Otherwise, it may cause troubles of the refrigeration
unit or accidents.
WARNING