CONTENTS
3.10 Chartless function .....................................3-56
3.10.1 Chart indication function.....................3-56
3.10.2 P code (Pull down time indication) .....3-58
3.10.3 Chartless code display function..........3-59
3.10.3.1 List of chartless code...................3-59
3.10.3.2 H-code.........................................3-60
3.10.3.3 d-code: ........................................3-62
3.11 Communication modem ............................3-63
4. Service and Maintenance .................................4-1
4.1 Maintenance service .....................................4-1
4.1.1 Collection of refrigerant ..........................4-1
4.1.2 Gauge manifold......................................4-1
4.1.3 Automatic pump down............................4-3
4.1.4 Refrigerant recovery and charge............4-5
4.2 Main components and maintenance .............4-9
4.2.1 Scroll compressor...................................4-9
4.2.2 Fan and fan motor................................4-11
4.2.3 PT and CT board (EC9756) .................4-12
4.2.4 Electronic expansion valve...................4-14
4.2.5 Suction modulation valve .....................4-15
4.2.6 Drier......................................................4-16
4.2.7 Solenoid valve......................................4-17
4.2.8 Discharge pressure regulating valve....4-18
4.2.9 Check valve..........................................4-18
4.2.10 High-pressure switch (HPS)...............4-19
4.2.11 Low pressure transducer (LPT)..........4-19
4.2.12 High pressure transducer (HPT) ........4-20
4.2.13
Air-cooled condenser and evaporator
...4-20
4.2.14 Fusible plug........................................4-21
4.2.15 Liquid/moisture indicator ....................4-21
4.2.16 Evacuation and dehydrating...............4-22
5. Optional Devices...............................................5-1
5.1 Electronic temperature recorder....................5-1
5.2 USDA transportation .....................................5-3
5.2.1 Type of USDA sensor/receptacle...........5-3
5.2.2 Initial setting ...........................................5-3
5.2.3 USDA sensor calibration ........................5-3
5.2.4 USDA transportation requirement ..........5-3
5.2.5 USDA report...........................................5-3
5.3 TransFRESH.................................................5-5
6. Troubleshooting................................................6-1
6.1 Refrigeration system and electrical system...6-1
6.2 Alarm codes on electronic controller.............6-4
6.3
Troubleshooting for automatic PTI (J-code)
...6-9
6.4 Diagnosis based on the recording chart......6-11
6.5 Emergency operation..................................6-14
6.5.1 Emergency operation of controller .......6-14
6.5.2 Short circuit operation of controller.......6-15
6.5.3
Opening adjustment of electronic expansion valve
...6-16
6.5.4
Opening adjustment of suction modulation valve:
...6-17
6.5.5 Automatic Back up for supply/ return air
temperature sensors ............................6-18
6.6
Troubleshooting for automatic PTI (J-code)
...6-19
7. Appendix............................................................7-1
7.1 Standard tightening torques for bolts ............7-1
7.2 Standard tightening torque for flare nut.........7-1
7.3
Resistance of motor coil and solenoid valve coil
...7-1
7.4
HFC134a, temperature-vapor pressure characteristics table
...7-2
7.5
Temperature conversion table and temperature sensor
(SS/RS/DSS/DRS/RSS/RRS/EIS/EOS/SGS/AMBS)
characteristics table
.............................................7-3
7.6
Temperature conversion table and temperature
sensor (DCHS) characteristics table
................7-4
7.7
High pressure transducer characteristics table
...7-4
7.8
Low pressure transducer characteristics table
...7-4
7.9 Piping diagram ..............................................7-5
7.10 Pilot lamps and monitoring circuit ...............7-6
7.11 Fuse protection table...................................7-7
7.12 Schematic wiring diagram...........................7-9
7.13 Stereoscopic wiring diagram.....................7-10
Safety Precautions
• Danger .................................................................3
• Warning................................................................4
• Caution.................................................................5
1. Introduction .......................................................1-1
1.1 Operation range ............................................1-1
1.2 Basic Names of components ........................1-1
1.3 Basic operation of refrigeration unit ..............1-2
1.3.1 Starting operation...................................1-2
1.3.2 Checking during operation .....................1-3
1.3.3 Procedure after operation.......................1-3
1.3.4 Adjust the ventilation ..............................1-4
2. General description ..........................................2-1
2.1 Main specifications........................................2-1
2.2 Names of components ..................................2-2
2.2.1 Outside...................................................2-2
2.2.2 Inside......................................................2-4
2.2.3 Control box.............................................2-6
2.3
Set point of functional parts and protection devices
...2-9
2.4 Operating pressure and running current .....2-10
2.5 Operation modes and control......................2-14
2.5.1 Frozen mode ........................................2-15
2.5.2 Chilled and partial frozen mode............2-17
2.5.3 Defrosting mode...................................2-19
2.5.4 Common control...................................2-23
3. Electronic Controller.........................................3-1
3.1 Function table................................................3-1
3.2 Basic operation of electronic controller .........3-3
3.2.1 Control panel..........................................3-3
3.2.2 Operation mode and control...................3-5
3.3 Operation procedure .....................................3-6
3.3.1 Operation procedure flow chart..............3-6
3.3.2 Mode operation procedure .....................3-9
1.
Current (Operation state) indication mode
...3-9
2. Operation setting mode........................3-10
3. Battery mode........................................3-11
4. Mode operation ....................................3-12
5. LED display light-OFF mode ................3-14
6. Sensor indication mode........................3-15
7. Temperature record scroll mode ..........3-18
8. Alarm record scroll mode .....................3-21
9. PTI record scroll mode .........................3-23
3.3.3 Setting flow chart..................................3-24
10. Optional function setting mode...........3-26
11. Basic function setting mode ...............3-27
12. Optional condition setting mode.........3-29
13. Input data mode .................................3-31
14. Controller software download mode...3-32
3.4 Alarm display and back-up function ............3-33
3.4.1 Alarm list...............................................3-33
3.4.2
Back-up operation at sensor malfunction
...3-34
3.5 Battery.........................................................3-36
3.5.1 Specifications .......................................3-36
3.5.2 Function................................................3-37
3.6
Information interchange with personal computer
...3-37
3.6.1 Data logging .........................................3-38
3.6.2 Software configuration..........................3-39
3.7
Inspection procedure for the electronic controller
...3-41
3.8
Controller replacement and the initial setting
...3-42
3.8.1 Controller replacement.........................3-42
3.8.2 Initial setting & operation procedure.....3-43
3.8.3
Initial setting table into spare controller
...3-44
3.9
PTI (Pre-Trip Inspection) and periodic inspection
...3-45
3.9.1 Inspection item .....................................3-46
3.9.2 Automatic PTI (Pre-Trip Inspection).....3-49
3.9.2.1 PTI selection mode........................3-50
3.9.2.2 Short PTI (S.PTI)...........................3-51
3.9.2.3 Full PTI (F.PTI)..............................3-52
3.9.2.4
Alarm list during PTI (Pre-Trip Inspection)
...3-53
3.9.2.5 Manual check (M.CHECK) ............3-54
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