Name: Carrier 69NT40-541-505
Brand: Carrier
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T-368 8–6

Figure 8.6 Single Evaporator Fan Capability and Emergency Bypass - Schematic Diagram

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Table of Contents6
Description21
General Description21
Refrigeration Unit − Front Section21
Fresh Air Makeup Vent21
Figure 3.1 Refrigeration Unit - Front Section21
Evaporator Section22
Figure 3.2 Evaporator Section - Units with Center Access Panel22
Compressor Section23
Figure 3.3 Compressor Section23
Air-Cooled Condenser Section24
Figure 3.4 Condenser Section24
Control Box Section25
Communications Interface Module (Option)25
Figure 3.5 Control Box Section25
Refrigeration System Data26
Electrical Data27
Safety and Protective Devices28
Table 3-1 Safety and Protective Devices28
Refrigeration Circuit29
Figure 3.6 Refrigeration Circuit Schematic30
Microprocessor31
Temperature Control Microprocessor System31
Keypad31
Display Module31
Figure 4.1 Temperature Control System31
Figure 4.2 Keypad32
Table 4-1 Keypad Function32
Controller33
Controller Software33
Configuration Software (Cnf Variables)33
Figure 4.3 Display Module33
Figure 4.4 Control Module33
Operational Software (CD Function Codes)34
Modes of Operation34
Perishable Mode Temperature Control34
Perishable Pulldown34
Perishable Steady State34
Perishable Idle, Air Circulation34
Perishable Heating34
Perishable Mode Dehumidification35
Figure 4.5 Controller Operation - Perishable Mode35
Perishable, Dehumidification − Bulb Mode36
Perishable Economy36
Perishable Mode Cooling − Sequence of Operation36
Figure 4.6 Perishable Mode Cooling36
Perishable Mode Heating − Sequence of Operation37
Frozen Mode - Temperature Control37
Frozen Steady State37
Figure 4.7 Perishable Mode Heating37
Frozen Idle Mode38
Frozen "Heat" Mode38
Frozen Economy Mode38
Figure 4.8 Controller Operation - Frozen Mode38
Frozen Mode Cooling − Sequence of Operation39
Defrost39
Defrost Operation39
Figure 4.9 Frozen Mode39
Figure 4.10 Defrost40
Defrost Related Settings41
Protection Modes of Operation41
Evaporator Fan Operation41
Failure Action41
Generator Protection41
Condenser Pressure Control41
Quest − Ccpc41
Controller Alarms42
Pre−Trip Diagnostics42
Datacorder43
Datacorder Software43
Sensor Configuration (Dcf02)44
Logging Interval (Dcf03)44
Thermistor Format (Dcf04)44
Table 4-2 Data CORDER Configuration Variables44
Figure 4.11 Standard Configuration Report45
Sampling Type (Dcf05 & Dcf06)46
Alarm Configuration (Dcf07 − Dcf10)46
Datacorder Power-Up46
Pre-Trip Data Recording46
Datacorder Communications46
Table 4-3 Data CORDER Standard Configurations46
USDA Cold Treatment47
Datacorder Alarms48
ISO Trip Header48
Controller Configuration Variables49
Table 4-4 Controller Configuration Variables49
4.10 Controller Function Codes51
Table 4-5 Controller Function Codes51
Figure 4.12 Alarm Troubleshooting Sequence60
4.11 Controller Alarm Indications61
Table 4-6 Controller Alarm Indications70
4.12 Controller Pre-Trip Test Codes71
Table 4-7 Controller Pre-Trip Test Codes71
Table 4-8 Datacorder Function Code Assignments77
Table 4-9 Datacorder Pre-Trip Result Records78
Table 4-10 Datacorder Alarm Indications79
Operation81
Inspection (before Loading)81
Connect Power81
Connection to 380/460 VAC Power81
Connection to 190/230VAC Power (Option)81
Adjust Fresh Air Makeup Vent81
Figure 5.1 Autotransformer81
Upper Fresh Air Makeup Vent82
Vent Position Sensor82
Connect Remote Monitoring Receptacle82
Starting and Stopping Instructions82
Figure 5.2 Make up Air Flow Chart82
Starting the Unit83
Stopping the Unit83
Start−Up Inspection83
Physical Inspection83
Check Controller Function Codes83
Start Temperature Recorder83
Complete Inspection83
Pre-Trip Diagnostics83
Probe Diagnostics84
Emergency Bypass Operation (Option)85
Troubleshooting87
Unit will Not Start or Starts then Stops87
Unit Operates Long or Continuously Long in Cooling87
Unit Runs Bu Has Insufficient Cooling88
Unit will Not Heat or Has Insufficient Heating88
Unit will Not Terminate Heating88
Unit will Not Defrost Properly89
Abnormal Pressures (Cooling)89
Abnormal Noise or Vibrations90
Figure 7.1 Manifold Gauge Set93
Figure 7.2 R-134A Manifold Gauge/Hose Set94
Figure 7.3 Service Valve94
Figure 7.4 Refrigeration System Service Connections96
Figure 7.5 Compressor98
Figure 7.6 Exploded View of Valve Plate98
Figure 7.7 Bottom Plate Removed99
Figure 7.8 Oil Pump and Bearing Head99
Figure 7.9 Low Profile Oil Pump99
Figure 7.10 Motor End Cover100
Figure 7.11 Equalizing Tube and Lock Screw Assembly100
Figure 7.12 Crankshaft Assembly100
Figure 7.13 Suction Valve and Positioning Rings101
Figure 7.14 Piston Ring101
Figure 7.15 High Pressure Switch Testing102
Figure 7.16 Condenser Fan Position104
Figure 7.17 Heater Arrangement106
Figure 7.18 Evaporator Fan Locating Dimension107
Figure 7.19 Evaporator Fan Assembly107
Figure 7.20 Thermostatic Expansion Valve Bulb108
Figure 7.21 Thermostatic Expansion Valve109
Figure 7.22 Hermetic Thermostatic Expansion Valve Bulb Location109
Figure 7.23 Hermetic Thermostatic Expansion Valve Brazing Procedure109
Figure 7.24 Suction Modulation Valve (SMV)110
Table 7-1 Valve Override Control Displays111
Figure 7.25 Controller Section of the Control Box113
Table 7-2 Sensor Temperature/Resistance Chart115
Figure 7.26 Sensor Types116
Figure 7.27 Sensor and Cable Splice116
Figure 7.28 Return Sensor Positioning117
Figure 7.29 Supply Sensor Positioning117
Figure 7.30 Communications Interface Installation118
Table 7-3 Recommended Bolt Torque Values (Dry, Non-Lubricated for 18-8 Stainless Steel)119
Table 7-4 Wear Limits for Compressors119
Table 7-5 Compressor Torque Values120
Table 7-6 R-134A Temperature - Pressure Chart121
Figure 7.31 R-134A Compressor Pressure and Motor Current Curves Vs. Ambient Temperature, Sheet 1122
Figure 7.32 R-134A Compressor Pressure and Motor Current Curves Vs. Ambient Temperature, Sheet 2123
Figure 8.1 Single Evaporator Fan Capability and VPS - Legend127
Figure 8.2 Single Evaporator Fan Capability and VPS - Schematic Diagram128
Figure 8.3 Single Evaporator Fan Capability and VPS - Unit Wiring Diagram129
Figure 8.4 Single Evaporator Fan Capability and VPS - Unit Wiring Diagram130
Figure 8.5 Single Evaporator Fan Capability and Emergency Bypass - Legend131
Figure 8.6 Single Evaporator Fan Capability and Emergency Bypass - Schematic Diagram132
Figure 8.7 Single Evaporator Fan Capability and Emergency Bypass - Unit Wiring Diagram133
Figure 8.8 Single Evaporator Fan Capability and Emergency Bypass - Unit Wiring Diagram134
Figure 8.9 Single Evaporator Fan Capability, Emergency Bypass and Failsafe - Legend135
Figure 8.10 Single Evaporator Fan Capability, Emergency Bypass and Failsafe - Schematic Diagram136
Figure 8.11 Single Evaporator Fan Capability, Emergency Bypass and Failsafe - Unit Wiring Diagram137
Figure 8.12 Single Evaporator Fan Capability, Emergency Bypass and Failsafe - Unit Wiring Diagram138

Brand	Carrier
Model	69NT40-541-505
Category	Refrigerator
Language	English

Carrier 69NT40-541-505 User Manual

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