Carrier AquaSnap 30MPW Series User Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300170-01 Printed in U.S.A. Form 30MP-4T Pg 1 8-17 Replaces: 30MP-3T
Controls, Start-Up, Operation,
Service, and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . .2,3
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Conventions Used in this Manual . . . . . . . . . . . . . . . . 3
Basic Controls Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Main Base Board (MBB). . . . . . . . . . . . . . . . . . . . . . . . . . 7
AUX Board (AUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Energy Management Module (EMM) . . . . . . . . . . . . . . 7
Current Sensor Board (CSB) . . . . . . . . . . . . . . . . . . . . . 7
Expansion Valve (EXV) Board . . . . . . . . . . . . . . . . . . . . 7
Enable/Off/Remote Control Switch . . . . . . . . . . . . . . . 7
Emergency On/Off Switch. . . . . . . . . . . . . . . . . . . . . . . . 7
Board Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Module Communication . . . . . . . . . . . . . . . . . 7
Carrier Comfort Network
®
Interface . . . . . . . . . . . . . 13
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• COOLER LEAVING FLUID SENSOR
• COOLER ENTERING FLUID SENSOR
• CONDENSER LEAVING FLUID SENSOR
• CONDENSER ENTERING FLUID SENSOR
• COMPRESSOR RETURN GAS
TEMPERATURE SENSOR
• OUTDOOR-AIR TEMPERATURE SENSOR
• DUAL LEAVING WATER TEMPERATURE SENSOR
• DISCHARGE TEMPERATURE THERMISTOR
• SPACE TEMPERATURE SENSOR
Energy Management Module . . . . . . . . . . . . . . . . . . . . 16
Loss-of-Cooler Flow Protection . . . . . . . . . . . . . . . . . 16
Condenser Flow Protection . . . . . . . . . . . . . . . . . . . . . 16
Thermostatic Expansion Valves (TXV) . . . . . . . . . . 16
Electronic Expansion Valves (EXV) . . . . . . . . . . . . . 17
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• MINUTES LEFT FOR START
• MINUTES OFF TIME
• CAPACITY CONTROL OVERRIDES
Time, Day, and Date. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operation of Machine Based on Control Method. . 21
Cooling Set Point Select . . . . . . . . . . . . . . . . . . . . . . . . 25
Ice Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alarm Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Sequence of Operation . . . . . . . . . . . 27
Condenser Pump/Condenser Fan Output
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuring and Operating Dual Chiller Control. . 27
Temperature Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
• 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) . . . . . . . . . . . . . . . . . . 34
Page
Digital Scroll Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37
System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
START-UP AND OPERATION. . . . . . . . . . . . . . . . . 37-40
Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Check Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . 38
Check Compressor Oil Level. . . . . . . . . . . . . . . . . . . . 39
Adjust Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
• TEMPERATURES
• VOLTAGE — ALL UNITS
OPERATION SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . 40
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-52
Service Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Electronic Components . . . . . . . . . . . . . . . . . . . . . . . . . 41
• CONTROL COMPONENTS
Electronic Expansion Valve (EXV). . . . . . . . . . . . . . . 41
EXV Troubleshooting Procedure . . . . . . . . . . . . . . . . 42
Compressor Replacement . . . . . . . . . . . . . . . . . . . . . . 44
30MP Cooler and 30MPW Condenser . . . . . . . . . . . 44
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER REPLACEMENT
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER CLEANING
Water Treatment . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Check Refrigerant Feed Components . . . . . . . . . . . 45
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• THERMOSTATIC EXPANSION VALVE (TXV)
• MINIMUM LOAD VALVE
• PRESSURE RELIEF DEVICES
Check Unit Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chilled Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . 47
Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Replacing Defective Modules . . . . . . . . . . . . . . . . . . . 52
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Recommended Maintenance Schedule. . . . . . . . . . 52
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 52-71
Complete Unit Stoppage and Restart. . . . . . . . . . . . 52
• GENERAL POWER FAILURE
• UNIT ENABLE-OFF-REMOTE CONTROL SWITCH
IS OFF
• CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN
• OPEN 24-V CONTROL CIRCUIT BREAKER(S)
• COOLING LOAD SATISFIED
• THERMISTOR FAILURE
• ENABLING AND DISABLING COMPRESSORS
• COMPRESSOR DISCHARGE CHECK VALVE
• LOW SATURATED SUCTION
• COMPRESSOR SAFETIES
AquaSnap
®
30MPA,MPW015-071
Liquid Chillers with Scroll Compressors
and ComfortLink Controls

Carrier AquaSnap 30MPW Series Specifications

General

Brand	Carrier
Model	AquaSnap 30MPW Series
Category	Chiller
Language	English

Summary

SAFETY CONSIDERATIONS

General Safety Warnings

Critical safety warnings regarding electrical shock, venting, and tool usage.

Cautions and Precautions

Important cautions regarding oil, refrigerant, system protection, and control integrity.

CONTROLS

Main Base Board (MBB)

Describes the MBB as the central component of the ComfortLink control system.

Control Module Communication

Discusses communication between control modules via LEDs and networks.

Enable/Off/Remote Control Switch

Describes the 3-position switch for chiller operation control.

Emergency On/Off Switch

Explains the purpose of the emergency shutdown switch.

Carrier Comfort Network® Interface

Sensors

Energy Management Module

Loss-of-Cooler Flow Protection

Explains the factory-installed proof-of-cooler flow device.

Electronic Expansion Valves (EXV)

Capacity Control

CAPACITY CONTROL OVERRIDES

Lists factors that modify normal capacity control operation.

Operation of Machine Based on Control Method

ENABLE-OFF-REMOTE CONTROL

Controls unit operation via the Enable/Off/Remote switch.

OCCUPANCY SCHEDULE

Cooling Set Point Select

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)

Digital Scroll Option

DIGITAL SCROLL OPERATION

Explains how digital scroll compressors operate in loaded and unloaded states.

PRE-START-UP

Check compressor oil level

Checking compressor oil level and adjusting if necessary.

System Check

START-UP AND OPERATION

ACTUAL START-UP

Step-by-step guide for performing the initial unit start-up procedure.

PRELIMINARY CHARGE (30MPA)

Information on the preliminary refrigerant charge for MPA units.

OPERATION SEQUENCE

Service Test

Explains how to use the Service Test mode for diagnostics and component checks.

SERVICE

Charging

Details procedures for charging refrigerant circuits, including methods and safety.

Electronic Expansion Valve (EXV)

Detailed information on the EXV, its operation, and troubleshooting.

EXV Troubleshooting Procedure

Check EXV motor operation first

Procedure to check EXV motor operation using Service Test mode.

EXV VALVE REPLACEMENT

Steps for replacing the EXV valve, including piping and brazing.

Compressor Replacement

Compressor Replacement Procedures

Instructions for removing and installing scroll compressors.

30MP Cooler and 30MPW Condenser

BRAZED-PLATE COOLER AND CONDENSER HEAT EXCHANGER REPLACEMENT

Steps for replacing brazed-plate heat exchangers, including checks.

Oil Charge

Check Refrigerant Feed Components

FILTER DRIER

MOISTURE-LIQUID INDICATOR

PRESSURE RELIEF DEVICES

Check Unit Safeties

HIGH-PRESSURE SWITCH

Describes the function and settings of the high-pressure switch.

Thermistors

Chilled Water Flow Switch

Replacing Defective Modules

MAINTENANCE

Recommended Maintenance Schedule

Provides guidelines for routine maintenance tasks for optimal performance.

TROUBLESHOOTING

Complete Unit Stoppage and Restart

Lists causes and methods for unit stoppage and restart scenarios.

THERMISTOR FAILURE

Addresses issues related to thermistor failures and unit shutdown.

LOW SATURATED SUCTION

Discusses conditions leading to low saturated suction alarms.

Compressor Overload

Compressor Short Circuit

Compressor Motor Over Temperature

High-Pressure Switch Trip

ASTP Protection Trip

Motor Overload Protection

COPELAND* COMPRESSORS MODELS WITH ELECTRICAL CODE TF

Details motor overload protection for Copeland TF models.

COPELAND COMPRESSORS MODELS WITH ELECTRICAL CODE TW OR TE

Details motor overload protection for Copeland TW/TE models.

Kriwan Motor Protection Module Troubleshooting

FIELD TROUBLESHOOTING SOLID-STATE MOTOR PROTECTION MODULE

Steps to troubleshoot solid-state motor protection modules.

CONFIGURING THE MODULE

Warning Codes (Green LED Flash Code):

Alert/Lockout Codes (Red LED Flash Code):

Code 1 – Motor High Temperature

Code 4 – Scroll High Temperature

Code 6 – Missing Phase

BITZER* PROTECTION MODULE

Alarms and Alerts

Automatic alarms will reset...

Alarm and Alert Codes

A048 (Circuit A Compressor Availability Alarm)

T051 Alert Circuit A, Compressor 1 Failure

A110 Alarm Circuit A Loss of Charge

Alarm for loss of refrigerant charge.

A114 Alarm Circuit A Low Superheat

Alarm for low superheat condition.

A126 (Circuit A High Head Pressure)

Alarm for high head pressure condition.

A133 (Circuit A Low Suction Pressure)

A140 — Reverse Rotation Detected

A151 — Illegal Configuration Alarm

A172 (Loss of Communication with the EXV Board)

T173 (Energy Management Module Communication Failure)

A207 (Cooler Freeze Protection Alarm)

Cooler Freeze Protection

Alarm indicating potential cooler freeze condition.

T500, T501, T502 (Current Sensor Board Failure — Circuit Ax — Alert codes 500, 501, and 502)

T950 (Loss of Communication with Water System Manager)

A951 (Loss of Communication with Chillervisor System Manager)

TO ADDRESS THE UPC OPEN CONTROLLER

CONFIGURING THE BAS PORT FOR BACNET MS/TP

WIRING THE UPC OPEN CONTROLLER TO THE MS/TP NETWORK

MS/TP WIRING RECOMMENDATIONS

LOCAL ACCESS TO THE UPC OPEN CONTROLLER

CONFIGURING THE UPC OPEN CONTROLLER'S PROPERTIES

REPLACING THE UPC OPEN BATTERY

Remove the battery from the controller...