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CRR-20 & CRR-40, September 1999
Table of Contents
iii
Electrical Maintenance
5-1
Unit Wiring
5-1
Auxiliary Battery and Battery Charger (Option)
5-1
High Pressure Cutout Switch
5-1
Condenser Fan and Evaporator Fan Rotation
5-2
Electric Heaters
5-3
Refrigeration Maintenance and
Service Operations
6-1
Service Tools
6-1
Compressor Discharge and Suction Service Valves 6-2
Gauge Manifold Valve Positions
6-3
Gauge Manifold Set Attachment and Purging
6-4
Checking Compressor Oil
6-5
Refrigerant Leak Test Procedure
6-6
Low Side Pump Down
6-7
Refrigerant Charge
6-7
Evacuation and Cleanup of the
Refrigeration System
6-9
Evaporator Pressure Regulator (KVQ) Valve
6-13
Refrigerant Recovery
6-15
Using Pressurized Nitrogen
6-16
Compressor Replacement
6-17
Condenser Coil Replacement
6-18
Dehydrator (Filter Drier) or In-line Filter
Replacement
6-18
Expansion Valve Replacement
6-19
Heat Exchanger Replacement
6-19
Receiver Tank Replacement
6-20
High Pressure Cutout Switch, Condenser Fan
Speed Switch or Compressor Discharge
Gas Temperature Sensor Replacement
6-20
Liquid Line Solenoid Valve
6-21
Liquid Injection Valve Replacement
6-21
Dehumidify Valve (Option) Replacement
6-22
Structural/Accessory Maintenance
7-1
Mounting Bolts
7-1
Unit Inspection
7-1
Condenser Coil
7-1
Evaporator Coil
7-1
Defrost Drains
7-2
Evaporator Fan Location
7-2
Condenser Fan Location
7-2
Fresh Air Exchange System
7-2
Partlow (Model SR) Recording Thermo-
meter (Option)
7-3
Recording Chart Replacement
7-3
Recording Stylus Calibration
7-3
Element Replacement
7-4
Saginomiya (Model SKM) Recording Thermo-
meter (Option)
7-4
Battery
7-4
Recording Chart Replacement
7-5
Recording Stylus Calibration
7-5
Power Element Assembly Replacement
7-6
Timer (Quartz Motor and Reducing Gear
Replacement
7-6
Battery Voltage Indicator
7-6
Humidify System (Option)
7-7
Pretrip Inspection
7-7
Inspection and Cleaning
7-7
Diagnosis
8-1
Mechanical Diagnosis
8-1
Refrigeration Diagnosis
8-5
Electrical, Refrigeration and
µµ
P-D Menu
Flow Diagrams
9-1
Electrical Schematic with Circuit Tracing
9-1 to 9-24
460/380 Vac Power Supply to Unit
9-1
230/190 Vac Power Supply to Unit
9-2
External 12 Vdc Battery Power Supply
9-3
Microprocessor Awakened from Sleep Mode
9-4
12.5 Vdc Control Circuit, Sensor Circuits,
Evaporator Pressure Regulator (KVQ)
Valve Circuit, Condenser Fan Pressure
Switch Circuit and Water Pressure
Circuit (Option)
9-5
24 Vac Control Circuit
9-6
Setpoint Enable Battery and Battery
Charger Circuit (Option)
9-7
Remote Monitor Receptacle (4-pin) for
Bridge Lights Circuit (Option)
9-8
TRANSFRESH
®
Atmosphere Control
System Circuit (Option)
9-9
Integrated Remote Monitor System
Circuit (Option)
9-10
Dehumidify System, Humidity System,
Water Pressure Switch, USDA
Temperature Sensor, Pulp Sensor and
Chart Recorder Circuits (Options)
9-11
Содержание CRR-20
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