Operating and service manual
2 of 222 pages
Contents
Preface
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1
Warnings
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1
Legend
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6
General description
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8
Function description
.......................................................................................................................................
9
Start-up procedure .....................................................................................................................................
9
Climate Control Function ...........................................................................................................................
10
Temperature Control ................................................................................................................................
10
Capacity Control and Limiter .....................................................................................................................
10
Expansion Valve .......................................................................................................................................
11
Economizer Valve .....................................................................................................................................
12
Dehumidification
......................................................................................................................................
12
Condenser Fan .........................................................................................................................................
13
Evaporator Fan ........................................................................................................................................
13
Defrost Function ......................................................................................................................................
13
QUEST (optional) ......................................................................................................................................
15
Tests ......................................................................................................................................................
15
Function test ...........................................................................................................................................
16
Full PTI ...................................................................................................................................................
16
Short PTI ................................................................................................................................................
16
Data Log .................................................................................................................................................
16
Alarm Action System (AAS) .......................................................................................................................
18
Temperature control .................................................................................................................................
18
Expansion valve control ............................................................................................................................
18
Condenser fan control ...............................................................................................................................
18
Dehumidification control
...........................................................................................................................
19
Defrost control .........................................................................................................................................
19
Electrical control ......................................................................................................................................
19
Refrigeration system data
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20
Refrigerant charge, R134a .........................................................................................................................
20
General specification
................................................................................................................................
20
Compressor – motor assembly ...................................................................................................................
21
Frequency converter (FC) ..........................................................................................................................
21
High Pressure cut – out switch ...................................................................................................................
21
Fusible plug, receiver ................................................................................................................................
21
Economizer..............................................................................................................................................
21
Evaporator coil .........................................................................................................................................
21
Condenser coil .........................................................................................................................................
21
Evaporator fan .........................................................................................................................................
22
Condenser fan .........................................................................................................................................
22
Water cooled condenser (optional) .............................................................................................................
22
Defrosting ...............................................................................................................................................
22
Fresh air exchange ...................................................................................................................................
23
Refrigeration controls ...............................................................................................................................
23
Electrical data ..........................................................................................................................................
23
Circuit Breaker .........................................................................................................................................
23
Contactors ..............................................................................................................................................
23
Fuses ......................................................................................................................................................
23
Power plug ..............................................................................................................................................
23
Power Cable ............................................................................................................................................
24
USDA socket requirements ........................................................................................................................
24
Evaporator fan motor................................................................................................................................
24
Condenser fan motor ................................................................................................................................
24