2
CONTENTS (cont)
Page
Dual Chiller Sequence of Operation . . . . . . . . . . . . . 47
• PUMP OPERATION
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
• STARTUP DELAY IN EFFECT
• SECOND SETPOINT IN USE
• RESET IN EFFECT
• DEMAND LIMIT ACTIVE
• EVAPORATOR PUMP ROTATION
• PUMP PERIODIC START
• MASTER SLAVE CONTROL ACTIVE
• ICE MODE IN EFFECT
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
• THERMISTORS
• TRANSDUCERS
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52-99
Economizer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Electronic Expansion Valve (EXV) . . . . . . . . . . . . . . . 52
• MAIN EXV CONTROL
• ECONOMIZER EXV CONTROL
• EXV TROUBLESHOOTING PROCEDURE
Compressor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 55
• VI VALVE TROUBLESHOOTING
• SUCTION VICTAULIC COUPLING INSTALLATION
• COMPRESSOR OIL SYSTEM
Evaporator Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
• ISOLATION VALVE
• EVAPORATOR FREEZE PROTECTION
• LOW FLUID TEMPERATURE
• LOSS OF FLUID FLOW PROTECTION
• TUBE PLUGGING
• EVAPORATOR RETUBING
• TIGHTENING EVAPORATOR HEAD BOLTS
• INSPECTING/CLEANING HEAT EXCHANGERS
• EVAPORATOR CHILLED WATER FLOW SWITCH
All Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
• EVAPORATOR WATER TREATMENT
• PREPARATION FOR WINTER SHUTDOWN
Microchannel Heat Exchanger (MCHX) Condenser
Coil Maintenance and Cleaning
Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
RTPF Condenser Coil Maintenance and Cleaning
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
• REMOVE SURFACE LOADED FIBERS
• PERIODIC CLEAN WATER RINSE
• ROUTINE CLEANING OF RTPF COIL SURFACES
Condenser Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• LEAK TESTING
• REFRIGERANT CHARGE
Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• COMPRESSOR PROTECTION
• OIL SEPARATOR HEATERS
Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Variable Frequency Drives (VFDs). . . . . . . . . . . . . . . 63
• COMPRESSOR DRIVES
• CONDENSER FAN DRIVES
• VFD DISPLAY NAVIGATION
• VFD STATUS
• VFD CONFIGURATION TABLES
• VFD ALARM RESET
• VFD REPLACEMENT PROCEDURE
• LONG TERM STORAGE
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Recommended Maintenance Schedule . . . . . . . . . 100
Page
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 100-128
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
• CURRENT ALARMS
• RESETTING ALARMS
• ALARM HISTORY
• VFD ALARMS AND ALERTS
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
• BLACK BOX FUNCTION
• TROUBLESHOOTING GUIDE
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Quick Test (Service Test). . . . . . . . . . . . . . . . . . . . . . . 116
APPENDIX A — TOUCH PILOT™
DISPLAY TABLES. . . . . . . . . . . . . . . . . . . . . . . . . 129-149
APPENDIX B — CCN POINT TABLE. . . . . . . . . 150-155
APPENDIX C — LON POINT TABLE . . . . . . . . . . . . 156
APPENDIX D — BACNET/MODBUS
TRANSLATOR POINTS . . . . . . . . . . . . . . . . . . . . . . . 157
APPENDIX E — PIPING AND
INSTRUMENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . 158
APPENDIX F — MAINTENANCE SUMMARY
AND LOG SHEETS . . . . . . . . . . . . . . . . . . . . . . . . . 159, 160
APPENDIX G — EVAPORATOR HEATER SENSOR
SET POINT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
APPENDIX H — TOUCH PILOT WEB AND
NETWORK INTERFACE PARAMETERS . . . . . 162-168
APPENDIX I — COMPRESSOR CIRCUIT
BREAKER FACTORY TRIP SETTINGS . . . . . . . . . . 169
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
START-UP CHECKLIST
FOR 30XV LIQUID CHILLERS . . . . . . . . CL-1 to CL-8
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can
be hazardous due to system pressures, electrical compo-
nents, and equipment location (roof, elevated structures,
etc.). Only trained, qualified installers and service techni-
cians should install, start up, and service this equipment.
When working on this equipment, observe precautions in
the literature, on tags, stickers, and labels attached to the
equipment, and any other safety precautions that apply. Fol-
low all safety codes. Wear safety glasses and work gloves.
Use care in handling, rigging, and setting this equipment,
and in handling all electrical components.
WARNING
Electrical shock can cause personal injury and death. Shut
off all power to this equipment during installation and ser-
vice. There may be more than one disconnect switch. Tag
all disconnect locations to alert others not to restore power
until work is completed.
WARNING
Electrical shock can cause personal injury and death. After
unit power is disconnected, wait at least 20 minutes for the
VFD (variable frequency drive) capacitors to discharge
before opening drive.
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