Carrier 19XL Spezifikationen Seite 198
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General Maintenance
Refrigerant Properties
HCFC-22 or HFC-134a is the standard refrigerant in the 19XL. At normal atmospheric
pressure, HCFC-22 will boil at –41 F (–40 C) and HFC-134a will boil at –14 F (–25 C) and must,
therefore, be kept in pressurized containers or storage tanks. The refrigerants are practically
odorless when mixed with air. Both refrigerants are non-combustible at atmospheric pressure.
Read the Material Safety Data Sheet and the latest ASHRAE Safety Guide for Mechanical
Refrigeration to learn more about safe handling of these refrigerants.
HCFC-22 and HFC-134a will dissolve oil and some nonmetallic materials, dry the
skin, and, in heavy concentrations, may displace enough oxygen to cause
asphyxiation. In handling this refrigerant, protect the hands and eyes and avoid
breathing fumes.
DANGER
!
DANGER
- 19XL 1
- 50/60 Hz 1
- Analog Signal 8
- Contents 10
- Initial Start-Up 17
- List of Tables 26
- List of Figures 30
- Introduction 35
- Machine Familiarization 38
- Motor-Compressor 39
- Control Center 39
- Storage Vessel (Optional) 39
- Refrigeration Cycle 40
- Design I 42
- Design II 42
- Lubrication Cycle 43
- Oil Reclaim System 45
- During Light Load Conditions 46
- Starting Equipment 47
- Controls 51
- PIC System Components 52
- Processor Module (PSIO) 53
- Local Interface Device (LID) 54
- 6-Pack Relay Board 55
- 8-Input Modules 55
- Oil Heater Contactor (1C) 55
- Oil Pump Contactor (2C) 55
- General 57
- Alarms and Alerts 58
- Menu Structure 59
- To View Point Status ( 61
- Figure 15 61
- Override Operations 63
- For Discrete Points 64
- For Analog Points 64
- Time Schedule Operation ( 66
- Figure 18 66
- Figure 19 70
- PIC System Functions 74
- Deadband 75
- Proportional Bands and Gain 75
- Demand Limiting 76
- Machine Timers 76
- Occupancy Schedule 77
- Safety Controls 79
- (and figure following table) 80
- Default Screen Freeze 81
- Motor Cooling Control 81
- Ramp Loading Control 82
- Capacity Override (Table 4) 83
- Oil Sump Temperature Control 84
- Oil Cooler 85
- Remote Start/Stop Controls 86
- Spare Safety Inputs 86
- Condenser Pump Control 87
- Condenser Freeze Prevention 88
- Tower-Fan Relay 88
- TOWER FAN RELAY 89
- CONDENSER WATER PUMP 89
- Water/Brine Reset 90
- Surge Prevention Algorithm 93
- Surge Protection 95
- Lead/Lag Control 96
- Machine Communication Wiring 98
- Lead/Lag Operation 98
- Faulted Chiller Operation 103
- Load Balancing 104
- Ice Build Control 105
- Ice Build Initiation 106
- Start-Up/Recycle Operation 107
- Termination Of Ice Build 108
- Changing Refrigerant Types 111
- Service Operation 113
- To Log Off 114
- Holiday Scheduling ( 114
- Figure 23 114
- Local Start-Up 119
- Shutdown Sequence 120
- CONDENSER REFRIGERANT TEMP 121
- CONDENSER PRESSURE OVERRIDE 121
- COMPRESSOR MOTOR LOAD 121
- ENTERING CONDENSER WATER 121
- Higher) 122
- Chilled Water Recycle Mode 122
- Safety Shutdown 124
- Before Initial Start-Up 125
- Remove Shipping Packaging 126
- Open Oil Circuit Valves 126
- Torque All Gasketed Joints 126
- Check Machine Tightness 127
- Refrigerant Tracer 127
- Leak Test Machine 128
- Standing Vacuum Test 131
- Storage Tank 132
- Machine Dehydration 133
- Inspect Water Piping 136
- Check Starter 142
- Mechanical-Type Starters 143
- Oil Charge 150
- Software Version 152
- Input the Design Set Points 153
- Selecting Refrigerant Type 153
- Input Service Configurations 154
- Input Time and Date 155
- Occdef Table Modifications 161
- Holidef Table Modifications 161
- Brodefs Table Modifications 161
- Other Tables 161
- Check Voltage Supply 162
- High Altitude Locations 164
- Initial Start-up 169
- TARGET GUIDE 171
- VANE POSITION 171
- TARGET GUIDE VANE POSITION 171
- Check Rotation 172
- Cooler-Condenser 175
- Operating Instructions 177
- To Start the Machine 178
- Check the Running System 178
- To Stop the Machine 180
- After Limited Shutdown 180
- Extended Shutdown 181
- After Extended Shutdown 181
- Cold Weather Operation 182
- Manual Guide Vane Operation 182
- Refrigeration Log 183
- Preparation 184
- Machines with Storage Tanks 185
- CCCCCCCCC 188
- 1a 1b 2 3 4 5 8 11 12 13 14 192
- C CCCC C C 193
- CCCCCCCCCCC 193
- CC CCCCC 194
- C CCCCC C C 196
- General Maintenance 198
- Adding Refrigerant 199
- Removing Refrigerant 199
- Refrigerant Leak Testing 200
- Leak Rate 200
- Checking Guide Vane Linkage 202
- Trim Refrigerant Charge 203
- Weekly Maintenance 204
- Scheduled Maintenance 205
- Changing Oil Filter 206
- Oil Specification 208
- Oil Changes 208
- Refrigerant Filter 209
- Oil Reclaim Filters 210
- Replace the 211
- Condenser 212
- Water Leaks 213
- Water Treatment 214
- Check Pressure Transducers 216
- Figure 40 218
- Troubleshooting Guide 219
- Checking the Display Messages 220
- Checking Temperature Sensors 220
- Voltage Drop 221
- Check Sensor Accuracy 221
- Dual Temperature Sensors 222
- Transducer Replacement 225
- Control Test 227
- Control Modules 230
- Red Led 231
- Green LEDs 231
- Other Green LED 232
- Green LED 232
- Notes on Module Operation 233
- Figure 44) 236
- Options Modules (8-Input) 237
- Installation 239
- Solid-State Starters 241
- (Internal View) 245
- Physical Data 248
- Wiring Schematic 250
- Schematic 250
- Pic Component Panel Location 251
- Table 2 — LID Screens 252
- Volt/ Hz 279
- Motor Code 279
- CD CE CL CM CN CP CQ CR 279
- Legend For Table 10, A - N 283
- Table 10L — Machine Alerts 297
- Table 13 — Cutler-Hammer 309
- Component 312
- 19EA47-748 575-3-60 13.8 23.0 316
- 19EA44-748 230-3-60 19.5 57.5 316
- Components — Design I 319
- Components — Design II 321
- Figure 3 — Refrigerant Motor 322
- Figure 4 — Lubrication System 323
- Internal View 324
- (Solid-State Starter Shown) 326
- Figure 9 — Control Sensors 328
- (Temperature) 328
- Figure 10 — Control Sensors 329
- Screen (Status01) 334
- Figure 18 — Example of Time 337
- Schedule Operation Screen 337
- Figure 19 — Example of 338
- Set Point Screen 338
- Figure 20 — 19XL Hot Gas 339
- Bypass/Surge Prevention 339
- Metric Settings 340
- Figure 23 — Example of 342
- Holiday Period Screen 342
- Figure 24 — Control Sequence 343
- Figure 25 — Typical Wet-Bulb 344
- Type Vacuum Indicator 344
- Starter Power Stack 349
- Torque Potentiometers 350
- Adjustment 351
- Solid-State Starter 352
- Figure 35 — Refrigeration Log 354
- Figure 36 — 19XL Pumpout 355
- Unit Wiring Schematic 355
- Figure 38 — Guide Vane 357
- Actuator Linkage 357
- Figure 39 — 19XL Float 358
- Valve Designs 358
- Figure 40 — Optional Pumpout 359
- System Controls 359
- LED Locations 360
- Figure 43 — Processor (PSIO) 362
- Figure 44 — Starter 363
- Management Module 363
- Figure 45 — Options Module 364
- Figure 47 — Resistance Check 366
- ® Terminal Functions 369
- Compressor Assembly Torques 372
- Carrier Factory Wiring 375
- Optional (Factory or 375
- Field-Installed) Wiring 375
- Starter Cabinet Wiring 377
- Field Wiring 377
- Schematic (page 2 of 2) 378
- (Remove and use for job file.) 381
- MACHINE INFORMATION: 381
- INSTRUCTIONS 381
- CONFIGURATION SETTINGS LOG 383
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