Carrier AquaSnap 30MPA Series

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APPENDIX D — MAINTENANCE SUMMARY AND LOG SHEETS

30MP Weekly Maintenance Log

Plant ___________________________ Unit ID ______________________

Machine Model No. ________________

DATE OIL LEVEL

CHECK ALARMS

/ FAULTS

OPERATOR

INITIALS

REMARKS

Main Page

Table of Contents1
Safety Considerations2
- Basic Control Usage3
- Unit Sizes3
General3
Conventions Used in this Manual3
Scrolling Marquee Display Menu Structure4
Controls4
- Operating Modes5
- Accessory Navigator Display Module6
- LANG (Language Selection)6
General7
Main Base Board (MBB)7
AUX Board (AUX)7
Energy Management Module (EMM)7
Current Sensor Board (CSB)7
Expansion Valve (EXV) Board7
Enable/Off/Remote Control Switch7
Emergency On/Off Switch7
Board Addresses7
Control Module Communication7
- Component, Power, and Control Drawings8
- Carrier Comfort Network (CCN) Interface13
- CCN Wiring Diagram13
- High Pressure Switch14
- Output Relays14
- Status Inputs14
- Thermistor Designations14
- Compressor Return Gas15
- Condenser Entering Fluid Sensor15
- Condenser Leaving Fluid Sensor15
- Cooler Entering Fluid Sensor15
- Cooler Leaving Fluid Sensor15
- Dual Leaving Water Temperature Sensor15
- Outdoor-Air Temperature Sensor15
- Space Temperature Sensor Wiring15
- Thermistors and Wells15
- Pressure Transducer Identification15
Energy Management Module16
Loss-Of-Cooler Flow Protection16
Condenser Flow Protection16
Thermostatic Expansion Valves (TXV)16
- Space Temperature Sensor16
- Minutes Left for Start17
- Space Temperature Averaging17
- Capacity Control Overrides18
  - Deadband Multiplier18
  - First Stage Override/Slow Change Override18
- Minutes off Time18
Electronic Expansion Valves (EXV)17
Capacity Control17
- Time Required Configuration20
- Day and Date Required Configurations20
- Broadcast Required Configurations20
Time, Day, and Date20
Daylight Savings Required Configurations21
Operation of Machine Based on Control Method21
- Holiday Required Configurations22
- Occupancy Schedule Required Configurations23
- CCN Global Schedule24
- Timed Override24
Cooling Set Point Select25
Ice Mode25
Cooler Pump Control25
Alarm Routing25
- Control Methods and Cooling Set Points26
- Alarm Routing Control26
- Condenser Pump/Condenser Fan Output Control27
Cooler Pump Sequence of Operation27
Configuring and Operating Dual Chiller Control27
- Dual Chiller Configuration (Master Chiller Example)28
- Dual Chiller Configuration (Slave Chiller Example)30
- Brass Well Thermistor31
- Dual Chiller Thermistor Location31
- Dual Leaving Water Thermistor Well31
Temperature Reset31
- 4 To 20 Ma Reset32
- Configuring Outdoor Air and Space Temperature Reset32
- Menu Configuration of 4 to 20 Ma Cooling Set Point Control32
- Configuring Return Temperature Reset33
- Outdoor-Air Temperature Reset33
- Return Fluid Reset33
- Space Temperature Reset33
- 4 To 20-Ma Demand Limiting34
- DEMAND LIMIT (2-Stage Switch Controlled)34
- DEMAND LIMIT (CCN Loadshed Controlled)34
- Externally Powered Demand Limit34
- Configuring Demand Limit35
Cooling Set Point (4 to 20 Ma)34
Configuring Minimum Load Control36
Digital Scroll Option36
Pre-Start-Up36
System Check36
- Minimum Flow Rates and Minimum Loop Volume37
- Sight Glass Location37
Start-Up and Operation37
- Preliminary Puron Refrigerant (R-410A) Charge38
- Evacuation and Dehydration38
Actual Start-Up38
Check Refrigerant Charge38
- Liquid Charging Method39
- 60 Hz Additional Lubricant39
Check Compressor Oil Level39
Adjust Oil Charge39
- Temperature Limits for Standard 30MP Units40
- Voltage - All Units40
Operating Sequence40
Operating Limitations40
Service Test40
Charging41
Electronic Components41
Electronic Expansion Valve (EXV) (30MP05041
- EXV Valve Replacement42
- Valve Motor Replacement42
- EXV Cable Connections to EXV Module42
EXV Troubleshooting Procedure42
- Disassembly and Assembly of EXV Motor43
- Brazed-Plate Cooler and Condenser Heat Exchanger Replacement44
- Compressor Location44
Compressor Replacement44
30MP Cooler and 30MPW Condenser44
Water Treatment45
Oil Charge45
Check Refrigerant Feed Components45
- Moisture-Liquid Indicator45
- Brazed-Plate Cooler and Condenser45
- Thermostatic Expansion Valve (Txv)45
Check Unit Safeties46
Thermistors46
Pressure Transducers46
- Pressure Relief Devices46
- Thermistor Well47
- Thermistor Connections to Main Base Board, J8 Connector47
Chilled Water Flow Switch47
- 5K Thermistor Temperatures Vs. Resistance/Voltage Drop48
- 10K Thermistor Temperature Vs. Resistance/Voltage Drop (for SPT)50
- 86K Thermistor Vs Resistance (DTT)51
Strainer52
- Unit Enable-Off-Remote Control Switch Is off52
- Thermistor Failure53
- Enabling and Disabling Compressors53
- Compressor Discharge Check Valve53
- Low Saturated Suction53
- Chilled Fluid Proof-Of-Flow Switch Open53
- Open 24-V Control Circuit Breaker(S)53
Replacing Defective Modules52
Recommended Maintenance Schedule52
Troubleshooting52
Complete Unit Stoppage and Restart52

Carrier AquaSnap 30MPA Series - Page 95

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