CONTENTS
SAFETY CONSIDERATIONS.
GENERAL
MAJOR SYSTEM COMPONENTS
General
Main Base Board (MBB)
Scrolling Marquee Display
Energy Management Module (EMM)
Enable/Off/Remote Contact Switch
Emergency On/Off Switch
Board Addresses
Control Module Communication
Carrier Comfort Network Interface
OPERATING DATA
Sensors
• T1 — COOLER LEAVING FLUID SENSOR
• T2 — COOLER ENTERING FLUID SENSOR
• T7,T8 — COMPRESSOR RETURN GAS TEMPERATURE SENSOR (ACCESSORY)
• T9 — OUTDOOR-AIR TEMPERATURE SENSOR
• T10 — REMOTE SPACE TEMPERATURE SENSOR OR
DUAL LEAVING WATER TEMPERATURE SENSOR
Energy Management Module
Loss-of-Cooler Flow Protection
Thermostatic Expansion Valves (TXV)
Capacity Control
• MINUTES LEFT FOR START
• MINUTES OFF TIME
• LEAD/LAG DETERMINATION
• CAPACITY CONTROL OVERRIDES
Head Pressure Control
Operation of Machine Based on Control Method and Cooling Set Point Selection Settings
Cooling Set Point Select
Marquee Display Usage
Service Test.
Optional Factory-Installed Hydronic Package
Cooler Pump Control
Cooler Pump Sequence of Operation
Configuring and Operating Dual Chiller Control
Temperature Reset
Demand Limit
• DEMAND LIMIT (2-Stage Switch Controlled)
• EXTERNALLY POWERED DEMAND LIMIT
(4 to 20 mA Controlled)
• DEMAND LIMIT (CCN Loadshed Controlled)
Cooling Set Point (4 to 20 mA)
TROUBLESHOOTING
Complete Unit Stoppage and Restart
• GENERAL POWER FAILURE
• UNIT ENABLE-OFF-REMOTE CONTACT SWITCH ISOFF
• CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN
• OPEN HIGH-PRESSURE SWITCH(ES)
• OPEN COMPRESSOR INTERNAL THERMAL PROTECTION
• OPEN 24-V CONTROL CIRCUIT BREAKERS
• COOLING LOAD SATISFIED
• THERMISTOR FAILURE
• LOW SATURATED SUCTION
Alarms and Alerts
SERVICE
Electronic Components
• CONTROL COMPONENTS
Compressor Replacement
Cooler
• BRAZED-PLATE COOLER HEAT EXCHANGER REPLACEMENT
• BRAZED-PLATE COOLER HEAT EXCHANGER CLEANING
Check Oil Charge Condenser Section and Coils
• COIL CLEANING
• CLEANING E-COATED COILS
• CONDENSER SECTION
Check Refrigerant Feed Components
• THERMOSTATIC EXPANSION VALVE (TXV)
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• MINIMUM LOAD VALVE
• PRESSURE RELIEF DEVICES
Compressor and Unit Protective Devices
• MANUAL STARTER
• COMPRESSOR INTERNAL THERMAL PROTECTION
Check Unit Safeties
• HIGH-PRESSURE SWITCH
• PRESSURE TRANSDUCERS
• COOLER FREEZE-UP PROTECTION
• HEATER CABLE
• WINTER SHUTDOWN
Thermistors
Pressure Transducers
Flow Sensor
Strainer
Motormaster® V Controller
• GENERAL OPERATION
• SET POINTS
• INSTALLATION
• PROGRAMMING
• EPM CHIP
• LIQUID LINE PRESSURE SET POINT ADJUSTMENT
• LOSS OF CCN COMMUNICATIONS
• REPLACING DEFECTIVE MODULES
Hydronic Package
MAINTENANCE
Recommended Maintenance Schedule
PRE-START-UP
System Check
START-UP AND OPERATION
Actual Start-Up
Check Refrigerant Charge
Operating Limitations
• TEMPERATURES
• LOW AMBIENT OPERATION
• VOLTAGE — ALL UNITS
OPERATION SEQUENCE
APPENDIX A — CCN TABLES
APPENDIX B — FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMP AND MANUAL STARTERS
APPENDIX C — BUILDING INTERFACE
START-UP CHECKLIST FOR 30RA LIQUID CHILLER.
Please Download Here
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