Mitsubishi Heavy Industries TU1250SAE User manual

MITSUBISHI TRANSPORT REFRIGERATION UNIT
TU1250SAE
TU1250SAEM
TU1100SAE
TU900SAE
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
in a xed place so that it is
immediately available for
your reference when you
need it.
YEAR:2021
TSJ012A181B J
OPERATION MANUALOPERATION MANUAL

- 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
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 for
the refrigeration unit
(b) Maintenance of electric appliances
(c) Abnormal treatments which are not described in this manual
● This product contains fluorinated greenhouse gases.
•Refrigerant : R452A (GWP (Global Warming Potential)=2141)
Refer to a label on unit about weight of fluorinated greenhouse gases and
CO2equivalent. ( Refer to pages 7.)

- 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.

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Contents
Purpose of use and application- I
Important information------------ I
Operation manual ----------------II
For disposal -----------------------II
Contents-------------------------- III
1 Function of Refrigeration
Unit------------------------- 1
2 Name of each part ------- 3
Arrangement plan for main parts --3
Evaporator unit -------------------5
Condensing unit -----------------7
Cabin controller ------------------8
Digital display area ---------------9
Protective devices-------------- 11
3 Precaution for safety---- 12
Signs on safety ----------------- 12
Precautions --------------------- 13
General precautions ---------------- 13
During and after the operation ---- 14
Inspection/Cleaning/Repair-------- 15
Loading ------------------------------ 16
Handling of electric equipment and
power cords ------------------------- 16
Reinstallation of refrigeration unit --- 18
Modification of refrigeration unit and
specification change
---------------- 18
Power supply equipment ---------- 18
Emergency measure ----------- 19
Handling of warning labels ---- 21
Prevention of start during
inspection work----------------- 23
Clothing and protective equipment -- 23
Handling of grease and oil----- 23
When abnormal conditions are
detected ------------------------- 23
For emergency------------------ 23
4 Initial setting ------------- 24
Display and function of
main menu -----------------------24
Language setting mode ------------ 25
Display and function of
Sub-menu ------------------------27
Setting the calendar and clock
(Date, Month, Year)--------------29
Displaying the maintenance
information -----------------------31
Setting the defrost interval -----33
Setting LCD backlight-----------34
Fuel circulation mode setting ---- 36
5 Operation----------------- 37
Power on ------------------------ 38
Switching the drive ------------ 39
Operating with the engine --------- 39
Operating with the motor ---------- 39
Operation on hold display --------- 39
Selecting the operation pattern -- 40
Starting the operation---------- 42
Stopping the operation -------- 43
Normal stop procedure ------------- 43
Suspending (sleep) the compartment
operation (2-/3-compartment model) --
44
Setting the temperature ------- 45
Setting the preset temperature---- 46

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Whisper operation
(Only for engine drive)---------- 47
Manual defrost operation------ 48
Starting the manual defrost
operation----------------------------- 48
Ending the manual defrost
operation----------------------------- 48
Setting the ON timer ----------- 49
Setting the OFF timer ---------- 51
Self diagnosis operation
(PTI operation) ------------------ 53
Starting the operation -------------- 53
Finishing the operation when no
defects are detected --------------- 54
When abnormal conditions are
detected ----------------------------- 54
6 Loading ------------------ 55
Preparation before loading ---- 55
Loading and unloading -------- 56
Loading procedure ----------------- 56
Unloading ---------------------------- 57
7 Inspection ---------------- 58
Precautions for inspection ---- 58
Opening the front panel of
condensing unit----------------- 60
Closing the front panel of
condensing unit----------------- 60
Daily inspection----------------- 61
Inspection of cooling water quantity -- 61
Inspection of moving sections ---- 62
Inspection of engine oil quantity --- 63
Inspection of engine fuel quantity --- 64
Inspection of leakage and wiring
condition ----------------------------- 64
Inspection of condenser coil ------ 65
Periodic inspection------------- 66
Periodic inspection check sheet -- 67
Climate class ------------------- 68
Details of applicable oils and
cooling water-------------------- 69
Power supply system ---------- 69
8 Operation or stop for long
period of time------------ 70
When operating at a low inside container
temperature for a long period of time:
-- 70
When stopping the refrigeration unit for
a long period of time:
------------------- 70
9 For emergency ---------- 71
Alarm display ------------------- 71
Switching "Normal display" and
"Alarm display" ----------------- 71
Switching from
"Normal display screen" to
"Alarm display mode" -------------- 71
Switching from
"Alarm display mode" to
"Normal display screen" ----------- 71
Countermeasures--------------- 72
Changing the fuse ------------------ 72
When you contact your nearest
dealer--------------------------------- 73
Resuming operation after an
emergency stop
------------------ 74
List of alarm codes ------------- 75
10 Specification ------------- 78

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1 Function of Refrigeration Unit
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This refrigeration unit has following functions.
(1) Drive switching function
This is the function to switch the drive (engine/motor) depending on
whether the commercial power supply is connected or not.
Refer to page 39 for how to switch the drive.
(2) Operation pattern selection function
This is the function to switch operation pattern (automatic start/stop
operation/continuous operation).
For the switching of operation pattern, refer to pages 40 and 41.
(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 33 for defrosting timer setting.
2) Manual defrosting operation
Defrosting starts forcibly by pressing the switch of controller.
Refer to page 48 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) Whisper operation function
This is the function to lower the operation sound with fixing the engine at
slow speed forcibly during engine driving.
Refer to page 47 for how to operate.

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1 Function of Refrigeration Unit
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(5) Timer operation function
This is the function to set starting time and stopping time of the
operation .
Refer to pages from 49 to 52 for how to set.
(6) Self diagnosis operation function [PTI (Pre Trip Inspection)
operation]
This is the function to diagnose the refrigeration unit automatically if it
has any trouble or not.
Refer to pages from 53 to 54 for how to operate.

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2 Name of each part
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1
Evaporator unit
6
Cabin controller
2
Condensing unit
7
Fuel pump
3
Control box
8
Fuel tank
4
Refrigerant piping
9
Water separator
5
Battery
5
9
6
87
1
2 3 4
Actual locations of above units, etc. should be checked beforehand because they could
vary depending on vehicle models, or other.
Arrangement plan for main parts
■Single specification (TU1250SAE, TU1100SAE, TU900SAE)

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2 Name of each part
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Actual locations of above units, etc. should be checked beforehand because they could
vary depending on vehicle models, or other.
1
Front room evaporator unit
6
Battery
2
Rear room evaporator unit
7
Cabin controller
3
Condensing unit
8
Fuel pump
4
Control box
9
Fuel tank
5
Refrigerant piping
10
Water separator
10
98
1
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3 4 6 5 7
■Multiple specification (TU1250SAEM)

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2 Name of each part
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Evaporator unit
■Single specification (TU1250SAE, TU1100SAE, TU900SAE)
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2 Name of each part
Evaporator unit
1
Supply air outlet for evaporator
4
Evaporator coil
2
Electric heater (Optional)
5
Electronic expansion valve
3
Evaporator fan motor
5
4
Inside of view "A"
■Single specification (TU1250SAE, TU1100SAE, TU900SAE)
A
3
•Thin type : TU100SAE-EVX
(TU1250SAE, TU1100SAE)
A
3
•Thin type : TU100SAE-EVMX
(TU900SAE)
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