Service manual
Table Of Contents
- SAFETY SUMMARY
- INTRODUCTION
- DESCRIPTION
- MICROPROCESSOR
- 3.1 TEMPERATURE CONTROL MICROPROCESSOR SYSTEM
- 3.2 CONTROLLER SOFTWARE
- 3.3 MODES OF OPERATION
- 3.4 PROTECTION MODES OF OPERATION
- 3.5 QUEST - CCPC
- 3.6 CONTROLLER ALARMS
- 3.7 PRE-TRIP DIAGNOSTICS
- 3.8 DataCORDER
- 3.9 CONTROLLER CONFIGURATION VARIABLES
- 3.10 CONTROLLER FUNCTION CODES
- 3.11 CONTROLLER ALARM INDICATIONS
- 3.12 CONTROLLER PRE-TRIP TEST CODES
- OPERATION
- TROUBLESHOOTING
- 5.1 UNIT WILL NOT START OR STARTS THEN STOPS
- 5.2 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING
- 5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING
- 5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING
- 5.5 UNIT WILL NOT TERMINATE HEATING
- 5.6 UNIT WILL NOT DEFROST PROPERLY
- 5.7 ABNORMAL PRESSURES
- 5.8 ABNORMAL NOISE OR VIBRATIONS
- 5.9 MICROPROCESSOR MALFUNCTION
- 5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW
- 5.11 EAUTOFRESH NOT OPERATING
- 5.12 ELECTRONIC EXPANSION VALVE MALFUNCTION
- 5.13 AUTOTRANSFORMER MALFUNCTION
- 5.14 COMPRESSOR OPERATING IN REVERSE
- 5.15 ABNORMAL TEMPERATURES
- 5.16 ABNORMAL CURRENTS
- SERVICE
- 6.1 SECTION LAYOUT
- 6.2 MANIFOLD GAUGE SET
- 6.3 SERVICE CONNECTIONS
- 6.4 PUMP DOWN THE UNIT
- 6.5 REFRIGERANT LEAK CHECKING
- 6.6 EVACUATION AND DEHYDRATION
- 6.7 REFRIGERANT CHARGE
- 6.8 COMPRESSOR
- 6.9 HIGH PRESSURE SWITCH
- 6.10 CONDENSER COIL
- 6.11 CONDENSER FAN AND FAN MOTOR
- 6.12 FILTER DRIER
- 6.13 EVAPORATOR COIL & HEATER ASSEMBLY
- 6.14 EVAPORATOR FAN AND MOTOR ASSEMBLY
- 6.15 EVAPORATOR SECTION CLEANING
- 6.17 ECONOMIZER SOLENOID VALVE
- 6.18 ECONOMIZER EXPANSION VALVE
- 6.19 DIGITAL UNLOADER VALVE
- 6.20 VALVE OVERRIDE CONTROLS
- 6.21 AUTOTRANSFORMER
- 6.22 CONTROLLER
- 6.23 TEMPERATURE SENSOR SERVICE
- 6.24 VENT POSITION SENSOR (VPS)
- 6.25 eAutoFresh SERVICE
- 6.26 MAINTENANCE OF PAINTED SURFACES
- 6.27 COMMUNICATIONS INTERFACE MODULE INSTALLATION
- ELECTRICAL WIRING SCHEMATICS
vii T-362
LIST OF ILLUSTRATIONS (Continued)
FIGURE NUMBER Page
Figure 6−5 Compressor Kit 6−5....................................................................
Figure 6−6 High Pressure Switch Testing 6−6........................................................
Figure 6−7 Condenser Fan Position 6−8.............................................................
Figure 6−8 Heater Arrangement 6−9................................................................
Figure 6−9 Evaporator Fan Assembly 6−10...........................................................
Figure 6−10 Electronic Expansion Valve 6−11.........................................................
Figure 6−11 Coil View of Economizer Solenoid Valve (ESV) 6−12........................................
Figure 6−12 Economizer Expansion Valve 6−12.......................................................
Figure 6−13 View of Digital Unloader Valve (DUV) Assembly 6−13.......................................
Figure 6−14 Autotransformer 6−15...................................................................
Figure 6−15 Controller Section of the Control Box 6−16.................................................
Figure 6−16 Sensor Types 6−20.....................................................................
Figure 6−17 Sensor and Cable Splice 6−20...........................................................
Figure 6−18 Supply Sensor Positioning 6−21..........................................................
Figure 6−19 Return Sensor Positioning 6−21..........................................................
Figure 6−20 Evaporator Temperature Sensor Positioning 6−21..........................................
Figure 6−21 Compressor Discharge Temperature Sensor 6−22..........................................
Figure 6−22 Stepper Components 6−23..............................................................
Figure 6−23 Jumper Assembly 6−24.................................................................
Figure 6−24 Motor Cup Replacement 6−25...........................................................
Figure 6−25 Communications Interface Installation 6−26................................................
Figure 7−1 LEGEND − Standard Unit Configuration 7−1...............................................
Figure 7−2 SCHEMATIC DIAGRAM 7−2............................................................
Figure 7−3 UNIT WIRING DIAGRAM 7−3...........................................................
Figure 7−4 LEGEND − Unit With Autotransformer 7−5.................................................
Figure 7−5 SCHEMATIC DIAGRAM, Unit With Autotransformer 7−6....................................
Figure 7−6 UNIT WIRING DIAGRAM, Unit With Autotransformer 7−7...................................
LIST OF TABLES
TABLE NUMBER Page
Table 2−1 Safety and Protective Devices 2−8.........................................................
Table 3−1 Keypad Function 3−2.....................................................................
Table 3−2 DataCORDER Configuration Variables 3−14..................................................
Table 3−3 DataCORDER Standard Configurations 3−16.................................................
Table 3−4 Controller Configuration Variables 3−19......................................................
Table 3−5 Controller Function Codes 3−20.............................................................
Table 3−6 Controller Alarm Indications 3−29...........................................................
Table 3−7 Controller Pre-trip Test Codes 3−37..........................................................
Table 3−8 DataCORDER Function Code Assignments 3−43..............................................
Table 3−9 DataCORDER Pre-trip Result Records 3−44..................................................
Table 3−10 DataCORDER Alarm Indications 3−45......................................................
Table 6−1 Valve Override Control Displays 6−14........................................................
Table 6−2 Sensor Resistance 6−18...................................................................
Table 6−3 Sensor Resistance (CPDS) 6−19............................................................
Table 6−4 R-134a Temperature - Pressure Chart 6−27..................................................
Table 6−5 Recommended Bolt Torque Values 6−28.....................................................