CONTENTS
3.4 Back up Battery...........................................3-29
3.4.1 Specifications .......................................3-29
3.4.2 Function................................................3-29
3.4.3
Checking the remaining battery voltage
..3-29
3.4.4 Battery replacement
(Rechargeable battery)
............................
3-30
3.5
Information interchange with personal computer
...3-34
3.5.1 Data logging .........................................3-34
3.6
Controller replacement and software upgrade
...3-35
3.6.1 Controller replacement .........................3-35
3.6.2 Installation of software of latest version
(version upgrade) .................................3-39
3.7 Pre-Trip Inspection......................................3-40
3.7.1 Manual inspection ................................3-41
3.7.2 Automatic PTI.......................................3-43
3.7.2.1 Automatic PTI selection mode.......3-43
3.7.2.2 Short PTI (S.PTI)...........................3-44
3.7.2.3 Alarm list during PTI
(Pre-Trip Inspection)......................3-45
3.7.2.4 Manual check (M.CHECK) ............3-46
3.8 Chartless function .......................................3-48
3.8.1 Chart indication function.......................3-48
3.8.2 P code (Pull down time indication) .......3-50
3.8.3 Chartless code display function............3-51
3.8.3.1 List of chartless code.....................3-51
3.8.3.2 H-code...........................................3-52
3.8.3.3 d-code ...........................................3-54
3.9 Communication modem ..............................3-55
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 .............4-8
4.2.1 Scroll compressor...................................4-8
4.2.2 Fan and fan motor ................................4-14
4.2.3 PT and CT board (EC9756) .................4-15
4.2.4 Electronic expansion valve...................4-17
4.2.5 Suction modulation valve .....................4-18
4.2.6 Drier......................................................4-19
4.2.7 Solenoid valve ......................................4-20
4.2.8 Discharge pressure regulating valve ....4-21
4.2.9 Check valve..........................................4-21
4.2.10 High-pressure switch (HPS) ...............4-22
4.2.11 Low pressure transducer (LPT)..........4-22
4.2.12 High pressure transducer (HPT) ........4-23
4.2.13
Air-cooled condenser and evaporator
...4-23
4.2.14 Fusible plug ........................................4-23
4.2.15 Liquid/moisture indicator ....................4-24
4.2.16 Evacuation and dehydrating...............4-25
4.3 Periodic Inspection Items ............................4-27
SAFETY PRECAUTIONS
• Danger .................................................................4
• Warning................................................................5
• Caution.................................................................6
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 Check items 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......................................................2-5
2.2.3 Control box .............................................2-7
2.3 Set point of protection devices
....................
2-10
2.4 Operating pressure and running current .....2-11
2.5 Operation modes and control......................2-15
2.5.1 Frozen operation ..................................2-15
2.5.2 Chilled operation ..................................2-17
2.5.3 Defrosting operation .............................2-19
2.5.4 Dehumidification control operation
(Optional)..............................................2-22
2.5.5 Common control ...................................2-23
3. ELECTRONIC CONTROLLER...........................3-1
3.1 Basic operation of electronic controller .........3-1
3.1.1 Control panel ..........................................3-1
3.2 Operation procedure .....................................3-4
3.2.1 Operation procedure flow chart ..............3-4
3.2.2 Mode operation procedure .....................3-7
1.
Current (Operation state) indication mode
...3-7
2. Operation setting mode ..........................3-8
3. Battery mode ..........................................3-9
4. Mode operation ....................................3-10
5. LED display light-OFF mode ................3-11
6. Sensor indication mode........................3-12
7. Temperature record scroll mode ..........3-15
8. Alarm record scroll mode .....................3-17
9. PTI record scroll mode .........................3-18
10. Optional function setting mode...........3-19
11. Basic function setting mode ...............3-20
12. Optional condition setting mode .........3-22
13. Input data mode .................................3-24
14. Controller software download mode...3-25
3.3 Alarm display and back-up function ............3-26
3.3.1 Alarm list...............................................3-26
3.3.2 Back-up operation at the time of control
sensor abnormality ...............................3-27
3.3.3 Backup operation at the time of sensor
abnormality...........................................3-27
