1. Characteristics ··········································· 1
2. Specification················································ 2
3. General information ································· 4
3.1 Controller ··············································· 4
3.2 Drive system··········································· 4
3.3 Operation control···································· 4
3.4 Defroster ················································· 4
3.5 Protective device····································· 4
4. Name of each component······················ 5
5. Adjustment of test operation················ 6
5.1 Pre-operation inspection ·························· 6
5.2 Inspection during operation····················· 6
6. Daily operation ············································ 6
6.1 Description of operation for the
controller ·················································· 6
6.2 Other operations ······································· 7
6.3 Operation of special service switches ······ 7
6.4 Operation sequence ·································· 7
6.5 Operation of display switches ·················· 8
6.6 Defrosting operation and manual
defrosting ················································· 8
7. Loading ··························································· 9
7.1 Inspection before loading ························ 9
7.2 Loading procedure ··································· 9
7.3 Unloading ················································ 10
7.4 Caution to be taken for the usage ············ 10
8. Refrigerant piping system ····················· 11
8.1
Refrigerant piping system diagram
·········· 11
8.2 Freezing cycle ········································· 11
9. Control system ············································ 12
10. Description of main parts ······················· 13
10.1 Compressor ·············································· 13
10.2 Magnet clutch ·········································· 13
10.3 Heat accumulator ····································· 14
10.4 Accumulator ············································ 14
10.5 Electromagnetic valve ····························· 15
10.6 Check valve ············································· 15
10.7 Receiver ··················································· 15
10.8 Sight glass ················································ 16
10.9 Dryer ························································ 16
10.10 Condenser fan motor ······························· 16
10.11 Evaporator fan motor ······························· 17
10.12 Multi-function valve ································ 17
10.13 Expansion valve ······································· 17
10.14 Defrost thermostat (DTS) ························ 18
10.15 Dual pressure switch (DPS) ····················· 18
10.16 Storage temperature sensor (TH) ············ 18
10.17 Td sensor (Td) ········································· 19
10.18 Controller ················································· 19
10.19 Drain hose heater (option) ······················· 20
11. Electric wiring diagram ··························· 21
11.1 Sequence diagram ···································· 21
11.2 Wiring layout drawing ····························· 24
11.3 Explanation of operation ························· 28
12. Periodic inspection ··································· 34
12.1 Inspection at the time of installation
and test run ·············································· 34
12.2 Daily inspection ······································· 34
12.3 Monthly inspection ·································· 35
12.4 Six-mouth inspection ······························· 35
12.5 Bolt tightening table for each section ······ 35
12.6 Caution to be taken at the time of
daily inspection ········································ 36
12.7 Caution to be taken at the time of
periodic inspection ·································· 38
12.8 Check sheet (Installation, test run and
periodic inspection) ································· 40
12.9 Pressure table for standard operation ······ 41
13. Defect and its cause ································· 42
13.1 Diagnosis of defects on refrigerant
system······················································ 42
13.2
Charging the refrigerant <R404A>
·········· 46
13.3 Diagnosis of defects on electric parts······ 47
14. Method to select a model with
jumper cable ················································· 64
15. Refrigerant saturated pressure
table (R404A) ················································ 65
16. Installation procedure ····························· 66
16.1 Cautionary points during installation ······ 66
16.2 Cautionary and requested points
during installation ···································· 67
16.3 Reference drawing of installation ············ 71
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