Carrier 69NT40-511-1 - Figure 4-1 Cooling in High Speed with Two-Speed Compressor

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SECTION 4

4-5 T-268-07

CONTROL TRANSFORMER

= 18 Volt Energized Circuit = 24 Volt Energized Circuit = De- energized Circuit

Figure 4-1. Cooling in High Speed with Two-Speed Compressor

Main Page

Table of Contents6
Section Page7
Table 1-1 Model Chart12
Thermostatic Expansion Valve22
Parts22
Figure 2-2 Refrigeration Unit -- Rear (Panels Removed)22
Figure 2-3 Compressor Section23
Figure 2-4 Condenser Section24
Figure 2-5 Units with Receiver25
Figure 2-6 Units with Water-Cooled Condenser26
Figure 2-7 Control Box on Units with a Single-Speed Compressor27
Figure 3-1 Key Pad27
Figure 3-2 Display Module27
Controller/Datacorder28
Figure 2-8 Control Box on Units with a Two-Speed Compressor (Optional)28
System Data29
- Figure 2-9 Power Autotransformer (Optional)31
- Figure 2-10 Refrigeration Circuit with Receiver34
- Figure 2-11 Refrigeration Circuit with Water-Cooled Condenser (Optional)36
- Table 2-1 Safety and Protective Devices38
- Brief Description39
  - Figure 3-1 Micro-Link 2I Controller/Datacorder Module39
  - Table 3-1 Controller Configuration Variables41
  - Table 3-2 Key Pad Function42
  - Table 3-3 Controller Function Code Assignments44
  - Display Only Functions46
  - Controller Alarms48
- Table 3-4 Controller Alarm Indications49
- Pre-Trip56
- Table 3-5 Pre-Trip Test Codes57
- Datacorder Configuration63
- Datacorder Function Codes64
- Table 3-6 Datacorder Function Code Assignments64
- Datacorder Alarms65
- Table 3-7 Datacorder Alarm Indications66
- Access to Datacorder Functions67
- Table 3-8 Datacorder Alarm Configurations67
- Table 3-9 Datacorder Standard Configuration68
- Datacorder Communications69
- Pre-Trip Data Recording69
- USDA Recording69
- USDA/ Message Trip Comment69
- Datacorder Scrollback70
Usda Cold Treatment Procedure70
Table 3-10 Datacorder Pre-Trip Data71
Figure 3-3 Standard Configuration Report Sample72
Figure 3-4 Controller Set Point below --10_C (+14_F), or --5_C (+23_F) Optionally73
Figure 3-5 Controller Set Point above --10_C (+14_F), or --5_C (+23_F) Optionally73
Figure 3-6 Two-Speed Compressor Speed Change Logic -- Perishable Range Only74
Figure 3-7 Two-Speed Compressor Speed Change Logic -- Frozen Range Only75
Operation76
PRE-TRIP INSPECTION (before Starting)76
Starting and Stopping Instructions77
After Starting Inspection77
Unit Operation77
- Crankcase Heater77
- Probe Check Initiation77
- Cooling -- Controller Set below --10_C (+14_F), or --5_C (+23_F) Optionally78
- Controller Set above --10_C (+14_F), or --5_C (+23_F) Optionally78
- Figure 4-1 Cooling in High Speed with Two-Speed Compressor80
- Figure 4-2 Cooling in Low Speed with Two-Speed Compressor82
- Figure 4-3 Cooling with Single-Speed Compressor84
- Heating (See Figure 4-4.)85
- Figure 4-4 Heating Mode86
- Defrost87
- Arctic87
- Table 4-1. Electrical Control Positions - - below - -10_C (+14_F), or - -5_C (+23_F) Optionally89
- Table 4-2. Electrical Control Positions - - above - -10_C (+14_F), or - -5_C (+23_F) Optionally90
Troubleshooting91
Unit will Not Start or Starts then Stops91
Unit Runs but Has Insufficient Cooling91
Unit Operates Long or Continuously in Cooling91
Unit will Not Heat or Has Insufficient Heating92
Unit will Not Terminate Heating92
Unit will Not Defrost Properly92
Figure 4-5 Defrost92
Abnormal Pressures (Cooling)93
Abnormal Noise or Vibrations93
Temperature Controller Malfunction93
No Evaporator Air Flow or Restricted Air Flow93
Thermostatic Expansion Valve Malfunction94
Power Autotransformer Malfunction94
Water-Cooled Condenser or Water Pressure Switch94
Service95
Figure 6-1 Manifold Gauge Set95
Figure 6-2 R-134A Manifold Gauge Set Connection97
Suction and Discharge Service Valves98
Figure 6-3 Suction or Discharge Service Valve98
Pumping the Unit down98
Refrigerant Leak Checking98
Evacuation and Dehydration99
- General99
- Preparation99
- Procedure99
- Checking the Refrigerant Charge99
- Figure 6-4 Vacuum Pump Connections101
- Model 06Dr Compressor102
- Adding Refrigerant to System (Partial Charge)102
Refrigerant Charge99
Compressor -- Model 06Dr102
- Removal and Replacement of Compressor103
Figure 6-5 Compressor -- Model 06DR103
Compressor Disassembly103
Figure 6-6 Exploded View of Valve Plate104
Figure 6-7 Bottom Plate Removed104
Figure 6-8 Oil Pump and Bearing Head105
Figure 6-9 Low Profile Gear Oil Pump105
Figure 6-10 Motor End Cover105
Figure 6-11 Crankshaft Assembly106
Figure 6-12 Removing Equalizing Tube and Lock Screw Assembly106
Figure 6-13 Terminal Mounting Assembly106
Figure 6-14 Suction Valve & Positioning Springs107
Compressor Reassembly107
Figure 6-15 Piston Rings107
Compressor Oil Level108
- Figure 6-16 Compressor Oil Pump End View108
- Checking High Pressure Switch109
- Replacing High Pressure Switch109
Filter-Drier109
Evaporator Coil and Heater Assembly110
Evaporator Coil Heaters110
Evaporator Fan and Motor Assembly110
Figure 6-18 Evaporator Fan Assembly111
Evaporator Fan Motor Capacitors111
Condenser Coil112
Condenser Fan and Motor Assembly112
Partlow Recording Thermometer112
Figure 6-19 Partlow Recording Thermometer114
Saginomiya Recording Thermometer114
Maintenance of Painted Surfaces115
Power Autotransformer (Optional)115
Sensor Checkout Procedure (Ambs, Dts, Rrs, Rts, Srs & Sts)115
- Checking Sensor (RRS, RTS, SRS or STS)115
- Figure 6-20 Saginomiya Recording Thermometer115
- Replacing Sensor (STS and SRS)116
- Figure 6-21 Supply Sensor Positioning116
- Replacing Sensor (RRS and RTS)117
- Figure 6-24 Return Sensor Positioning118
- Figure 6-25 Sensor (AMBS or DTS)118
- Figure 6-26 Sensor and Wire Assembly (AMBS or DTS)118
Figure 6-27 Suction Solenoid Valve (SSV) -- Alco119
Suction Solenoid Valve (Ssv)119
Suction Modulation Valve (Smv)119
- Figure 6-28 Suction Modulation Valve (SMV)120
- Figure 6-29 Thermostatic Expansion Valve -- Alco121
- Figure 6-30 Thermostatic Expansion Valve Bulb121
- Figure 6-31 Controller Side of the Control Box122
- Controller Trouble-Shooting123
- Controller/Datacorder Programming Procedure123
Water-Cooled Condenser124
- Figure 6-32 Water-Cooled Condenser Cleaning -- Forced Circulation125
- Figure 6-33 Water-Cooled Condenser Cleaning -- Gravity Circulation126
- Table 6-1 AMBS, DTS, RRS, RTS, SRS and STS Temperature-Resistance Chart126
- Table 6-3 Recommended Bolt Torque Values127
- Table 6-4 Wear Limits for Compressors127
- Table 6-5 Compressor Torque Values128
- Table 6-6 Temperature-Pressure Chart -- R-134A129
- Figure 6-34 R-134A Compressor Pressure and Motor Current Curves Versus Ambient Temperature131
Electrical Wiring Schematic and Diagrams132
Introduction132
Index133

Carrier 69NT40-511-1 - Figure 4-1 Cooling in High Speed with Two-Speed Compressor

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