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69NT40-541-500
Carrier 69NT40-541-500 User Manual
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Container Refrigeration
OPERA
TIONS
AND SER
VICE
MANUAL
For
69NT40-541-500 to 599
Container Refrigeration Units
T
-363
Rev C
2
Table of Contents
Default Chapter
6
Table of Contents
6
Figure Number
23
Description
23
General Description
23
Refrigeration Unit - Front Section
23
Fresh Air Makeup Vent
23
Figure 3.1 Refrigeration Unit - Front Section
23
Evaporator Section
24
Figure 3.2 Evaporator Section - Units with Center Access Panel
24
Compressor Section
25
Figure 3.3 Compressor Section
25
Air-Cooled Condenser Section
26
Figure 3.4 Condenser Section
26
Control Box Section
27
Communications Interface Module (Option)
27
Figure 3.5 Control Box Section
27
Refrigeration System Data
28
Electrical Data
29
Table Number
30
Safety and Protective Devices
30
Table 3-1 Safety and Protective Devices
30
Refrigeration Circuit
31
Figure 3.6 Refrigeration Circuit Schematic
32
Microprocessor
33
Temperature Control Microprocessor System
33
Figure 4.1 Temperature Control System
33
Display Module
34
Figure 4.2 Keypad
34
Keypad
34
Controller
35
Figure 4.3 Display Module
35
Table 4-1 Keypad Function
35
Controller Software
36
Configuration Software (Cnf Variables)
36
Figure 4.4 Control Module
36
Operational Software (CD Function Codes)
37
Modes of Operation
37
Perishable Mode Temperature Control
37
Perishable Pulldown
37
Perishable Steady State
37
Perishable Idle, Air Circulation
38
Perishable Heating
38
Perishable Mode Dehumidification
38
Figure 4.5 Controller Operation - Perishable Mode
38
Perishable, Dehumidification - Bulb Mode
39
Perishable Economy
39
Perishable Mode Cooling - Sequence of Operation
40
Figure 4.6 Perishable Mode Cooling
40
Perishable Mode Heating - Sequence of Operation
41
Frozen Mode - Temperature Control
41
Frozen Steady State
41
Figure 4.7 Perishable Mode Heating
41
Frozen Idle Mode
42
Frozen "Heat" Mode
42
Frozen Economy Mode
42
Figure 4.8 Controller Operation - Frozen Mode
42
Frozen Mode Cooling - Sequence of Operation
43
Defrost
43
Figure 4.9 Frozen Mode
43
Defrost Operation
44
Defrost Related Settings
45
Figure 4.10 Defrost
45
Protection Modes of Operation
46
Evaporator Fan Operation
46
Failure Action
46
Generator Protection
46
Condenser Pressure Control
46
Quest - Ccpc
46
Controller Alarms
47
Pre-Trip Diagnostics
47
Datacorder
48
Datacorder Software
49
Sensor Configuration (Dcf02)
49
Logging Interval (Dcf03)
50
Thermistor Format (Dcf04)
50
Table 4-2 Data CORDER Configuration Variables
50
Figure 4.11 Standard Configuration Report
51
Sampling Type (Dcf05 & Dcf06)
52
Alarm Configuration (Dcf07 - Dcf10)
52
Datacorder Power-Up
52
Table 4-3 Data CORDER Standard Configurations
52
Pre-Trip Data Recording
53
Datacorder Communications
53
USDA Cold Treatment
53
USDA Cold Treatment Procedure
54
Datacorder Alarms
54
ISO Trip Header
55
Controller Configuration Variables
56
Table 4-4 Controller Configuration Variables
56
4.10 Controller Function Codes
58
Table 4-5 Controller Function Codes
58
Figure 4.12 Alarm Troubleshooting Sequence
67
4.11 Controller Alarm Indications
68
Table 4-6 Controller Alarm Indications
77
4.12 Controller Pre-Trip Test Codes
78
Table 4-7 Controller Pre-Trip Test Codes
78
Table 4-8 Datacorder Function Code Assignments
84
Table 4-9 Datacorder Pre-Trip Result Records
85
Table 4-10 Datacorder Alarm Indications
86
Operation
87
Inspection (before Loading)
87
Connect Power
87
Connection to 380/460 VAC Power
87
Connection to 190/230VAC Power (Option)
87
Adjust Fresh Air Makeup Vent
88
Upper Fresh Air Makeup Vent
88
Figure 5.1 Autotransformer
88
Vent Position Sensor
89
Eautofresh Operation
89
Figure 5.2 Make up Air Flow Chart
89
Eautofresh Modes of Operation
90
Eautofresh Pre-Trip Inspection
90
Eautofresh Start-Up Procedure
90
Connect Remote Monitoring Receptacle
91
Starting and Stopping Instructions
92
Starting the Unit
92
Stopping the Unit
92
Start-Up Inspection
92
Physical Inspection
92
Check Controller Function Codes
92
Start Temperature Recorder
92
Complete Inspection
92
Pre-Trip Diagnostics
92
Probe Diagnostics
94
Emergency Bypass Operation (Option)
95
Troubleshooting
97
Unit will Not Start or Starts then Stops
97
Unit Operates Long or Continuously Long in Cooling
97
Unit Runs but Has Insufficient Cooling
98
Unit will Not Heat or Has Insufficient Heating
98
Unit will Not Terminate Heating
98
Unit will Not Defrost Properly
99
Abnormal Pressures (Cooling)
99
Abnormal Noise or Vibrations
100
Microprocessor Malfunction
100
6.10 no Evaporator Air Flow or Restricted Air Flow
100
6.11 Eautofresh Not Operating
101
6.12 Thermostatic Expansion Valve Malfunction
101
6.13 Autotransformer Malfunction
101
Service
103
Section Layout
103
Manifold Gauge Set
103
Figure 7.1 Manifold Gauge Set
103
Service Valves
104
Figure 7.2 R-134A Manifold Gauge/Hose Set
104
Pump the Unit down
105
Figure 7.3 Service Valve
105
Refrigerant Leak Checking
106
Evacuation and Dehydration
106
General
106
Preparation
106
Complete System
107
Figure 7.4 Refrigeration System Service Connections
107
Procedure - Partial System
108
Refrigerant Charge
108
Checking the Refrigerant Charge
108
Adding Refrigerant to System (Full Charge)
108
Adding Refrigerant to System (Partial Charge)
109
Compressor
109
Removal and Replacement of Compressor
109
Figure 7.5 Compressor
110
Compressor Disassembly
111
Figure 7.6 Exploded View of Valve Plate
111
Figure 7.7 Bottom Plate Removed
111
Figure 7.8 Oil Pump and Bearing Head
112
Figure 7.9 Low Profile Oil Pump
113
Figure 7.10 Motor End Cover
113
Figure 7.11 Equalizing Tube and Lock Screw Assembly
114
Figure 7.12 Crankshaft Assembly
114
Compressor Reassembly
115
Preparation
115
Figure 7.13 Suction Valve and Positioning Rings
115
Figure 7.14 Piston Ring
115
Installing the Components
116
Compressor Oil Level
116
High Pressure Switch
117
Checking High Pressure Switch
117
Replacing the High Pressure Switch
118
7.10 Condenser Coil
118
Condenser Coil Cleaning
118
Figure 7.15 High Pressure Switch Testing
118
Condenser Coil Removal
119
Condenser Coil Preparation
119
Condenser Coil Installation
119
Figure 7.16 Condenser Fan Position
120
7.11 Condenser Fan and Fan Motor
121
Condenser Fan Motor Remove/Replace
121
7.12 Filter-Drier
121
7.13 Evaporator Coil & Heater Assembly
122
Evaporator Coil Replacement
122
Evaporator Heater Replacement
122
Figure 7.17 Heater Arrangement
123
Figure 7.18 Evaporator Fan Assembly
124
Figure 7.19 Thermostatic Expansion Valve Bulb
125
Figure 7.20 Thermostatic Expansion Valve
126
Figure 7.21 Hermetic Thermostatic Expansion Valve Bulb Location
127
Figure 7.22 Hermetic Thermostatic Expansion Valve Brazing Procedure
127
Figure 7.23 Suction Modulation Valve (SMV)
127
Table 7-1 Valve Override Control Displays
129
Figure 7.24 Controller Section of the Control Box
132
Table 7-2 Sensor Temperature/Resistance Chart
135
Figure 7.25 Sensor Types
136
Figure 7.26 Sensor and Cable Splice
137
Figure 7.27 Supply Sensor Positioning
137
Figure 7.28 Return Sensor Positioning
138
Figure 7.29 Stepper Components
139
Figure 7.30 Jumper Assembly
140
Figure 7.31 Motor Cup Replacement
141
Figure 7.32 Communications Interface Installation
142
Table 7-3 Recommended Bolt Torque Values (Dry, Non-Lubricated for 18-8 Stainless Steel)
143
Table 7-4 Wear Limits for Compressors
143
Table 7-5 Compressor Torque Values
144
Table 7-6 R-134A Temperature - Pressure Chart
145
Figure 7.33 R-134A Compressor Pressure and Motor Current Curves Vs. Ambient Temperature, Sheet 1
148
Figure 7.34 R-134A Compressor Pressure and Motor Current Curves Vs. Ambient Temperature, Sheet 2
149
Figure 8.1 LEGEND
151
Figure 8.2 Schematic Diagram
152
Figure 8.3 Unit Wiring Diagram (Sheet 1 of 2)
153
Figure 8.4 Unit Wiring Diagram (Sheet 2 of 2)
154
4
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Carrier 69NT40-541-500 Specifications
General
Brand
Carrier
Model
69NT40-541-500
Category
Industrial Electrical
Language
English
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