Carrier 19XL specifications Recycle Shutdown, Normal or AUTO.-RESTART, Autorestart in Progress

Page 69

Table 9 Ð LID Primary and Secondary Messages and Custom Alarm/Alert Messages

with Troubleshooting Guides (cont)

C. IN RECYCLE SHUTDOWN

PRIMARY MESSAGE

SECONDARY MESSAGE

PROBABLE CAUSE/REMEDY

RECYCLE RESTART PENDING

OCCUPIED MODE

Unit in recycle mode, chilled water temperature is not

high enough to start.

 

 

RECYCLE RESTART PENDING

REMOTE CONTACT CLOSED

Unit in recycle mode, chilled water temperature is not

high enough to start.

 

 

RECYCLE RESTART PENDING

 

Chiller START/STOP on Status01 manually forced to

START COMMAND IN EFFECT

start, chilled water temperature is not high enough to

 

 

start.

RECYCLE RESTART PENDING

ICE BUILD MODE

Chiller in ICE BUILD mode. Chilled Water/Brine Tem-

perature is satis®ed for Ice Build Setpoint temperature.

 

 

D. PRE-START ALERTS: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary.

PRIMARY MESSAGE

SECONDARY MESSAGE

ALARM MESSAGE/PRIMARY CAUSE

ADDITIONAL CAUSE/REMEDY

PRESTART ALERT

 

STARTS EXCESSIVE Compressor

Depress the RESET softkey if addi-

STARTS LIMIT EXCEEDED

tional start is required. Reassess

Starts (8 in 12 hours)

 

 

start-up requirements.

 

 

 

 

 

PRESTART ALERT

 

MTRW [VALUE]* exceeded limit of

Check motor cooling line for proper

HIGH MOTOR TEMPERATURE

operation. Check for excessive

[LIMIT]*. Check motor temperature.

 

 

starts within a short time span.

 

 

 

 

 

 

 

MTRB [VALUE]* exceeded limit of

Check oil heater for proper opera-

PRESTART ALERT

 

tion, check for low oil level, partially

HIGH BEARING TEMPERATURE

[LIMIT]*. Check thrust bearing

closed oil supply valves, etc. Check

 

 

temperature.

 

 

sensor accuracy.

 

 

 

 

 

PRESTART ALERT

 

CMPD [VALUE]* exceeded limit of

Check sensor accuracy. Allow dis-

HIGH DISCHARGE TEMP

charge temperature to cool. Check

[LIMIT]*. Check discharge temperature.

 

 

for excessive starts.

 

 

 

 

 

PRESTART ALERT

 

ERT [VALUE]* exceeded limit of

Check transducer accuracy. Check

LOW REFRIGERANT TEMP

for low chilled water/brine supply

[LIMIT]*. Check refrigerant temperature.

 

 

temperature.

 

 

 

 

 

PRESTART ALERT

LOW OIL TEMPERATURE

OILT [VALUE]* exceeded limit of

Check oil heater power, oil heater

[LIMIT]*. Check oil temperature.

relay. Check oil level.

 

 

 

 

 

 

 

Check voltage supply. Check volt-

PRESTART ALERT

LOW LINE VOLTAGE

V

 

P [VALUE]* exceeded limit of

age transformers. Consult power

 

utility if voltage is low. Adjust voltage

[LIMIT]*. Check voltage suppy.

 

 

potentiometer in starter for SMM

 

 

 

 

 

 

 

 

 

 

voltage input.

 

 

 

 

 

Check voltage supply. Check volt-

PRESTART ALERT

HIGH LINE VOLTAGE

V

 

P [VALUE]* exceeded limit of

age transformers. Consult power

 

utility if voltage is low. Adjust voltage

[LIMIT]*. Check voltage supply.

 

 

potentiometer in starter for SMM

 

 

 

 

 

 

 

 

 

 

voltage input.

PRESTART ALERT

 

CRP [VALUE]* exceeded limit of

Check for high condenser water

HIGH CONDENSER PRESSURE

[LIMIT]*. Check condenser water and

temperature. Check transducer

 

 

transducer.

accuracy.

*[LIMIT] is shown on the LID as temperature, pressure, voltage, etc., prede®ned or selected by the operator as an override or an alert. [VALUE] is the actual temperature, pressure, voltage, etc., at which the control tripped.

E. NORMAL OR AUTO.-RESTART

PRIMARY MESSAGE

SECONDARY MESSAGE

PROBABLE CAUSE/REMEDY

STARTUP IN PROGRESS

OCCUPIED MODE

Chiller starting. Time schedule is occupied.

STARTUP IN PROGRESS

REMOTE CONTACT CLOSED

Chiller starting. Remote contacts are closed.

STARTUP IN PROGRESS

START COMMAND IN EFFECT

Chiller starting. Chiller START/STOP on Status01 manu-

ally forced to start.

 

 

AUTORESTART IN PROGRESS

OCCUPIED MODE

Chiller starting. Time schedule is occupied.

AUTORESTART IN PROGRESS

REMOTE CONTACT CLOSED

Chiller starting. Remote contacts are closed.

AUTORESTART IN PROGRESS

START COMMAND IN EFFECT

Chiller starting. Chiller START/STOP on Status01 manu-

ally forced to start.

 

 

NOTE: See Legend on page 68.

 

 

69

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Page 68 Page 70
Contents Safety Considerations Start-Up, Operation, and Maintenance InstructionsContents Contents Abbreviations and Explanations IntroductionChiller Familiarization Refrigeration CycleMOTOR/OIL Refrigeration Cooling Cycle 19XL Rear View Cooler In/Out Temperature Sensors Take-Apart Rabbet Fit ConnectorCondenser In/Out Temperature Sensors Cooler Pressure Schrader FittingRefrigerant Motor Cooling and Oil Cooling Cycles Lubrication CycleLubrication System Unit-Mounted Solid-State Starter Optional Starting EquipmentControls DenitionsMajor PIC Components Panel Locations PIC Component PanelPressure Transducer, Typical 19XL Controls and Sensor LocationsControl and OIL Heater Voltage Selector S1 Power Panel with OptionsLID Operation and Menus Fig GeneralSelect Override Operations − Example of Point Status Screen Status01Example of Time Schedule Operation Screen 19XL Menu Structure 19XL Service Menu Structure 19XL Service Menu Structure Example of Set Point Screen SetpointLID Screens Description Range Units Reference Point Name Alarm HistoryExample 1 Ð STATUS01 Display Screen Menu Status SelectExample 3 Ð STATUS03 Display Screen Example 2 Ð STATUS02 Display ScreenExample 4 Ð Setpoint Display Screen MenuExample 6 Ð LEAD/LAG Configuration Display Screen Example 5 Ð Configuration Config Display ScreenECW Control Option ICE Build TerminationExample 7 Ð SERVICE1 Display Screen Spare Alert Enable Example 8 Ð SERVICE2 Display ScreenExample 9 Ð SERVICE3 Display Screen Menu ServiceExample 11 Ð Maintenance MAINT02 Display Screen Example 10 Ð Maintenance MAINT01 Display ScreenDischarge Temperature Bearing TemperatureExample 12 Ð Maintenance MAINT03 Display Screen Example 13 Ð Maintenance MAINT04 Display ScreenDescription RANGE/STATUS Units Reference Point Name PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page ECW Lead/Lag ControlHgbp Hot Gas BypassPage Cent Capacity Ice Build ControlPage To LOG on Example of Attach to Network Device ScreenSequence Fig START-UP/SHUTDOWN/RECYCLERecycle Restart Delta T Before Initial START-UP Using the Optional Storage Tank and PumpoutJob Data Required Equipment Required19XL Leak Test Procedures Page Ð HCFC-22 Pressure Ð Temperature C Ð HCFC-22 Pressure Ð Temperature FÐ HFC-134a Pressure Ð Temperature F Ð HFC-134a Pressure Ð Temperature CTemperature Pressure Page Check Optional Pumpout Compressor Water Pip Inspect WiringMECHANICAL-TYPE Starters Check StarterBENSHAW, INC. SOLID-STATE Starter Benshaw, Inc. Solid-State Starter Power StackSet Up Chiller Control Conguration Power Up the Controls and Check the Oil HeaterLoad Surge Prevention Occurs TOO Soon Occurs TOO Late Volt Motor Code Amps Correction Factors For 19XL Motors19XL Chiller Equalization Without PUMP- OUT Unit Charge Refrigerant into ChillerControl Test Menu Functions Tests to be Devices Tested Performed19XL Total Refrigerant Charge Refrigerant ChargesCooler SizeInitial START-UP Dry Run to Test Start-Up SequenceCheck Rotation Calibrate Motor Current Check Oil Pressure and Compressor StopOperating Instructions Operator DutiesTo Stop the Chiller Plant Operating the Optional Pumpout Compressor Pumpout and Refrigerant Transfer ProceduresTransfer Refrigerant from Storage Tank to Chiller TstatTransfer the Refrigerant from Chiller to Storage Tank Chillers with Isolation ValvesGeneral Maintenance Test After Service, Repair, or Major Leak Ð IfReturn Refrigerant to Normal Operating Conditions Guide Vane Actuator Linkage Weekly MaintenanceScheduled Maintenance Check Safety and Operating Controls MonthlyTo Change the OIL Inspect the Heat Exchanger Tubes Compressor Bearing and Gear MaintenOptional Pumpout System Controls Troubleshooting Guide MAINT02 MAINT01MAINT03 MAINT04Timing OUT or Timed OUT Shutdown with ON/OFF/RESET-OFFRecycle Shutdown Normal or AUTO.-RESTARTAutorestart in Progress LOW Chilled Water Compressor Jumpstart and Refrigerant Protection Normal RUN with RESET, TEMPERATURE, or DemandNormal RUN Overrides Active Alerts OUT-OF-RANGE Sensor FailuresLimited Protective Limit Chiller Protect Limit FaultsSpare Sensor Alert Messages Chiller AlertsDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY Other PROBLEMS/MALFUNCTIONSTemperature Voltage Resistance Drop Ð Thermistor Temperature F vs Resistance/Voltage DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Control Modules Module AddressInput Options Module Starter Management Module SMM Fig Processor Module Psio FigOptions Module Switch Options Setting Module InstallationTypical Benshaw, Inc. Solid-State Starter internal View Page Page Problem Probable Causes Area of Correction Benshaw, Inc. Solid-State Starter Troubleshooting GuideRV1 SCRAdditional Data for Marine Waterboxes Heat Exchanger DataCooler CondenserCoolers Waterbox Cover WeightsCondensers 1034 kPaCompressor/Motor Weights Compressor WeightsOptional Pumpout System Electrical Data Compressor Fits and Clearances Description Torque Compressor Assembly TorquesFt-lb ``ZCOM CLRComm EXTPage CLR Page Chiller Power Panel, Starter Assembly Motor Wiring Schematic Chiller Power Panel, Starter Assembly Motor Wiring Schematic POT PMRGFR HPSTypical Wye-Delta Unit Mounted Starter Wiring Schematic Index Index Copyright 1996 Carrier Corporation

19XL specifications

The Carrier 19XL is a highly regarded commercial heating and cooling solution, designed to provide optimum performance and energy efficiency in various applications. This rooftop unit is engineered to meet the diverse needs of businesses, making it an ideal choice for those requiring reliable climate control in their facilities.

One of the standout features of the Carrier 19XL is its advanced cooling and heating capabilities. The unit utilizes a high-efficiency scroll compressor that ensures a quieter operation and improved reliability. The system can operate across a wide range of temperatures, making it versatile for various climates. Additionally, it offers both cooling and heating options, allowing for year-round comfort.

Energy efficiency is a focal point of the 19XL design. With an impressive Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), this unit not only helps reduce energy costs but also supports environmental sustainability initiatives. The unit is equipped with environmentally friendly refrigerants, further contributing to lower greenhouse gas emissions.

The Carrier 19XL features a user-friendly control system, allowing for easy monitoring and management of the unit's performance. This control system is designed to maximize energy savings, offering features such as demand control ventilation and integrated economizers that facilitate the use of outdoor air for cooling, reducing reliance on mechanical systems when conditions allow.

Construction-wise, the Carrier 19XL is built to withstand tough environmental conditions. Its robust cabinet is made from galvanized steel, providing durability and protection against the elements. The design also includes insulation to minimize noise levels, creating a more comfortable indoor environment.

Maintenance is a key consideration in the design of the 19XL. The unit features accessible service ports and a simplified access panel, allowing technicians to perform routine maintenance with ease. This proactive design helps ensure the longevity of the system and minimizes downtime, keeping operations running smoothly.

In summary, the Carrier 19XL is an exceptional choice for commercial heating and cooling needs. With its energy-efficient features, advanced technology, and durable construction, it stands out as a reliable solution for businesses looking for sustainable climate control options.
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