CONTENTS
3.5.2 Function................................................3-30
3.5.3 Battery check........................................3-30
3.5.4 Battery replacement
(Rechargeable battery) ............................3-31
3.6 Information interchange with personal computer...3-36
3.6.1 Data logging .........................................3-36
3.7 Controller replacement and software upgrade ...3-37
3.7.1 Controller replacement .........................3-37
3.7.2 Installation of software of latest version
(version upgrade) .................................3-41
3.8 PTI (Pre-Trip Inspection) and periodic inspection ...3-42
3.8.1 Inspection item .....................................3-43
3.8.2 Automatic PTI (Pre-Trip Inspection) .....3-46
3.8.2.1 PTI selection mode........................3-47
3.8.2.2 Short PTI (S.PTI) ...........................3-48
3.8.2.3 Full PTI (F.PTI) ..............................3-49
3.8.2.4 Alarm list during PTI
(Pre-Trip Inspection)......................3-50
3.8.2.5 Manual check (M.CHECK) ............3-51
3.9 Chartless function .......................................3-53
3.9.1 Chart indication function.......................3-53
3.9.2 P code (Pull down time indication) .......3-55
3.9.3 Chartless code display function............3-56
3.9.3.1 List of chartless code.....................3-56
3.9.3.2 H-code ...........................................3-57
3.9.3.3 d-code ...........................................3-59
3.10 Communication modem ............................3-60
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
5. OPTIONAL DEVICES.........................................5-1
5.1 Electronic temperature recorder....................5-1
5.1.1 Standard type .........................................5-1
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 functional parts and protection
devices.........................................................2-11
2.4 Operating pressure and running current .....2-12
2.5 Operation modes and control......................2-16
2.5.1 Frozen mode ........................................2-17
2.5.2 Chilled mode ........................................2-19
2.5.3 Defrosting mode ...................................2-21
2.5.4 Dehumidification (Optional) ..................2-24
2.5.5 Common control ...................................2-25
3. ELECTRONIC CONTROLLER...........................3-1
3.1 Functions of DECOS
Ⅲ
d and DECOS
Ⅲ
e.....3-1
3.2 Basic operation of electronic controller .........3-2
3.2.1 Control panel ..........................................3-2
3.3 Operation procedure .....................................3-5
3.3.1 Operation procedure flow chart ..............3-5
3.3.2 Mode operation procedure .....................3-8
1. Current (Operation state) indication mode ...3-8
2. Operation setting mode ..........................3-9
3. Battery mode ........................................3-10
4. Mode operation ....................................3-11
5. LED display light-OFF mode ................3-12
6. Sensor indication mode........................3-13
7. Temperature record scroll mode ..........3-16
8. Alarm record scroll mode .....................3-18
9. PTI record scroll mode .........................3-19
10. Optional function setting mode...........3-20
11. Basic function setting mode ...............3-21
12. Optional condition setting mode .........3-23
13. Input data mode .................................3-25
14. Controller software download mode...3-26
3.4 Alarm display and back-up function ............3-27
3.4.1 Alarm list...............................................3-27
3.4.2 Back-up operation at sensor malfunction...3-28
3.5 Back up Battery...........................................3-30
3.5.1 Specifications .......................................3-30
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