Star Cool SCU-20 - User Manual

Preface

Warnings

Critical safety instructions for operating and maintaining the refrigeration unit.

General Description

Function Description

Start-up Procedure

Details the five modes of the unit's start-up sequence.

Climate Control Function

Explains how the unit controls temperature in Chill and Frozen modes.

Temperature Control

Details the container temperature controller and its operating modes.

Capacity Control and Limiter

Describes how capacity is determined and controlled, including system component actions.

Expansion Valve

Explains the function of the expansion valve for superheat control and opening percentage.

Economizer Valve

Details the economizer valve's role in sub-cooling and capacity increase.

Dehumidification

Explains the dehumidification process using a heater and its operating modes.

Condenser Fan

Describes condenser fan control and its operating modes for pressure reduction.

Evaporator Fan

Explains the function of the evaporator fan and its operating modes.

Defrost Function

Details the defrost function, its modes, and how it ensures evaporator defrosting.

User Interface

Indicator lights

Explanation of the alarm and in-range indicator lights.

Display

Overview of the controller display elements and status icons.

Key pad

Description of navigation and menu keys for operating the unit.

Operation

Menu Structure

Diagram illustrating the main navigation paths within the unit's menus.

General Operation

General description of operating menus and editing parameters.

Temperature Setting

Procedure for adjusting the temperature set-point via the operating menu.

PTI or Function Test execution

Procedure for initiating and executing Pre-Trip Inspection (PTI) or Function Tests.

Info Menu Viewing

Details on accessing and viewing various operational parameters via the Info Menu.

Operation Parameter Setting

Guidance on setting operational parameters like setpoint and control mode.

Multiple Temperature Set points program, MTS

Configuration of settings for step 1 to 6 of the MTS program.

Cold Treatment program, CT

Procedure for setting up and running the Cold Treatment program.

Alarms

Information on alarm handling, levels, and the alarm list.

Service Function Setting;Viewing

Overview of sub-menus available within the Service menu for diagnostics and settings.

External interfaces

General requirements

Serial port setup and byte order specifications for external interfaces.

Functions overview

Location of valves

Location of motors, temperature sensors, humidity sensor and air exchange potentiometer

Location of pressure transmitters, high pressure switch and oil outlet port

General trouble shooting

Trouble shooting for Star Cool main controller

Detailed alarm description

Alarm list

Events

Temperature Sensor Alarms (AL 1 XX)

102 Tret invalid

Troubleshooting for Return Air Temperature Sensor Invalid alarm.

105 Tsup 1 invalid

Troubleshooting for Supply Air Temperature Sensor 1 Invalid alarm.

108 Tsup 2 invalid

Troubleshooting for Supply Air Temperature Sensor 2 Invalid alarm.

111 Tusda 1 out of range

Troubleshooting for USDA 1 Temperature Sensor Invalid alarm.

114 Tusda 2 out of range

Troubleshooting for USDA 2 Temperature Sensor Invalid alarm.

117 Tusda 3 out of range

Troubleshooting for USDA 3 Temperature Sensor Invalid alarm.

120 Tcargo out of range

Troubleshooting for Cargo Temperature Sensor Invalid alarm.

123 Tevap invalid

Troubleshooting for Evaporator Temperature Sensor Invalid alarm.

126 Tsuc invalid

Troubleshooting for Suction Temperature Sensor Invalid alarm.

129 Tamb invalid

Troubleshooting for Ambient Temperature Sensor Invalid alarm.

Pressure transmitter Alarms (AL 2 XX)

203 Pdis invalid

Troubleshooting for Compressor Discharge Pressure Transmitter Invalid alarm.

207 Psuc invalid

Troubleshooting for Compressor Suction Pressure Transmitter Invalid alarm.

250 Press sensor type

Alarm when saved FC ID does not match current FC ID.

Other Sensor Alarms (AL 3 XX)

302 RH invalid

Troubleshooting for Relative Humidity Sensor Invalid alarm.

303 AirEx invalid

Troubleshooting for Air Exchange Sensor Short Circuit alarm.

306 HPS switch - K1

Warning for High pressure switch activation.

314 Replace CO2 sensor

Alarm indicating CO2 measurement is out of range after calibration.

315 Replace O2 sensor

Alarm indicating O2 measurement is out of range after calibration.

Power Alarms (AL 4 XX)

400 Mevap 1 overheat

Warning for Evaporator Motor 1 Overheat.

401 Mevap 2 overheat

Warning for Evaporator Motor 2 Overheat.

402 Mcond overheat

Warning for Condenser Motor Overheat.

415 Over voltage

Fatal Alarm for over voltage on supply phases.

418 Under voltage

Fatal Alarm for under voltage on supply phases.

423 No phase direction

Fatal Alarm when phase direction is not detectable.

424 Power frequency

Log entry for phase frequency error.

429 (Voltage;freq.) U;f ratio

Alarm for Bad power supply due to incorrect voltage/frequency.

430 Cpr connection

Alarm for faulty power cable from FC to Compressor.

FC Alarms (AL 5 XX)

501 FC local control

Alarm for FC setting in Local Mode.

508 Compr connection

Alarm for FC Short Circuit Alarm.

509 FC 24 V fault

Alarm for FC Internal 24 V Supply Fault.

510 Compr connection

Alarm for FC Earth Fault.

511 FC over current

Alarm for FC Overcurrent.

513 Compr overload

Alarm for FC Overload.

514 FC under volt

Alarm for FC Undervoltage.

515 FC over volt

Alarm for FC Overvoltage.

516 FC phase loss

Alarm for FC Phase Loss.

517 FC over temp

Alarm for FC Overtemperature.

518 FC inrush

Alarm for FC Inrush Fault.

519 FC internal error

Warning for FC internal error.

523 FC phase loss

Log entry for FC Phase Loss Fault.

524 Compr current limit

Log entry for FC Current Limit Fault.

525 FC overload

Log entry for FC Overload.

529 FC setup error

Warning for FC Setup Error.

599 FC Trip Lock

Log entry for FC Trip Lock.

Operation Alarms (AL 6 XX)

600 No control sensors

Fatal alarm when all control sensors malfunction.

601 No water cooling

Alarm indicating lack of or insufficient water cooling.

603 In range fault

Fatal alarm indicating insufficient yield or controller malfunction.

604 High press trouble

Fatal alarm for High Pressure Switch activation.

607 AirEx open

Alarm for Air exchange valve open in conflict with settings.

608 Config AirEx type

Alarm for missing AirEx type setting.

609 Defrost Trouble

Alarm for defrost termination issues.

610 Defrost time exceed

Log entry for maximum defrost time exceeded.

611 Too many sensor errors

Alarm when multiple controlling sensors have errors.

612 FC trouble

Alarm for several FC errors or permanent FC error.

615 Mcond trouble

Alarm for condenser fan motor overheating.

616 Mevap trouble

Alarm for evaporator fan motor overheating.

621 Cpr restarted

Log entry for compressor restart after delay.

623 Loss of cooling

Fatal alarm for loss of cooling capacity.

625 CT outrange

Alarm for Cold Treatment temperature out of range.

630 Manual phase dir

Warning for manually selected phase direction.

Communication Alarms (AL 7 XX)

700 No FC;Contr com

Fatal alarm for communication loss with FC.

710 No userpanel com

Warning for no communication with the display.

720 No SPM com

Alarm for no communication with power module SPM6.

730 No RH sens com

Log entry for missing RH sensor communication.

Test Alarms (AL 8 XX)

800 Func test failed

Alarm indicating failure of one or more individual test steps.

801 Controller

Alarm for Controller Internal Voltage Reference Fault.

805 Idle current

Alarm for Unit idle overcurrent fault.

810 Mevap cur LO speed

Alarm for Evaporator motor low speed current fault.

811 Mevap cur HI speed

Alarm for Evaporator motor high speed current fault.

812 Mevap current OFF

Alarm for Evaporator Motor Off Current Fault.

815 Mcond cur LO speed

Alarm for Condenser Motor Low Speed Current Fault.

816 Mcond cur HI speed

Alarm for Condenser Motor High Speed Current Fault.

817 Mcond current OFF

Alarm for Condenser Motor Off Current Fault.

820 Hevap current ON

Alarm for Evaporator Heater On Current Fault.

821 Hevap current OFF

Alarm for Evaporator Heater Off Current Fault.

840 Valve leaks

Alarm indicating leakage of one or more valves.

842 Expansion valve

Alarm for non-operating electronic expansion valve.

843 Economizer valve

Alarm for non-operating economizer valve.

844 Hot gas valve

Alarm for non-operating hot gas valve.

845 Cpr pump down

Alarm for insufficient compressor performance during pump down.

846 FC Check

Alarm indicating an internal fault in the Frequency Converter (FC).

850 PTI test failed

Alarm indicating failure during a PTI test.

855 PTI Tset 5

Alarm for PTI 5°C Set Fault.

860 PTI Tset 0

Alarm for PTI 0°C Set Fault.

870 PTI defrost

Alarm indicating defrost termination issues during PTI.

880 PTI Tset -18

Alarm for PTI –18°C Set Fault.

Controller Alarms (AL 9 XX)

900 User stop

Fatal alarm for user stop executed from PC-program.

902 Battery malfunction

Alarm indicating defective battery.

904 Datalog error

Alarm indicating faulty datalog circuit or defective controller datalog.

905 Database corrupt

Log entry for failed EEPROM backup validation.

907 Realtime error

Alarm indicating unreliable real-time clock.

953 Temp ref 1 LO

Warning for Controller Internal Voltage Reference Fault (low).

954 Temp ref 1 HI

Warning for Controller Internal Voltage Reference Fault (high).

955 Temp ref 2 LO

Indicates Controller Internal Voltage Reference Fault for Temp Ref 2 (low).

956 Temp ref 2 HI

Indicates Controller Internal Voltage Reference Fault for Temp Ref 2 (high).

961 Pdis sens sup LO

Log entry for Controller Internal Voltage Reference Fault on Pdis sensor (low).

962 Pdis sens sup HI

Log entry for Controller Internal Voltage Reference Fault on Pdis sensor (high).

963 Psuc sens sup LO

Log entry for Controller Internal Voltage Reference Fault on Psuc sensor (low).

964 Psuc sens sup HI

Log entry for Controller Internal Voltage Reference Fault on Psuc sensor (high).

965 Controller sup LO

Log entry for Controller Internal Voltage Reference Fault on supply (low).

966 Controller sup HI

Log entry for Controller Internal Voltage Reference Fault on supply (high).

967 AirExMot sup LO

Log entry for Controller Internal Voltage Reference Fault on AirEx Motor (low).

968 AirExMot sup HI

Log entry for Controller Internal Voltage Reference Fault on AirEx Motor (high).

969 AirEx sens sup LO

Log entry for Controller Internal Voltage Reference Fault on AirEx sensor (low).

970 AirEx sens sup HI

Log entry for Controller Internal Voltage Reference Fault on AirEx sensor (high).

971 Sensor bus sup LO

Log entry for Controller Internal Voltage Reference Fault on sensor bus (low).

972 Sensor bus sup HI

Log entry for Controller Internal Voltage Reference Fault on sensor bus (high).

973 SUP6 SPM6 sup LO

Log entry for Supply voltage SUP6 SPM6 low.

974 Sensor bus sup HI

Log entry for Controller Internal Voltage Reference Fault on sensor bus (high).

975 Internal sup LO

Log entry for 12 V supply voltage low on SMC6.

976 Internal sup HI

Log entry for 12 V supply voltage high on SMC6.

980 Tinternal LO

Log entry for Controller Internal Voltage Reference Fault on Tinternal (low).

981 Tinternal HI

Log entry for Controller Internal Temperature Sensor High Temperature Fault.

988 Powermeas calibrat

Warning for Powermeas calibration not possible.

989 Software test ver

Warning for Software test version loading into controller.

990 Firmware update fail

Alarm for failed firmware activation.

991 Config model code

Alarm for missing model code.

994 Req min SW352-11

Alarm indicating software incompatibility.

995 Control internal error

Alarm indicating an internal error on the main controller module.

999 Keyboard Failure

Warning indicating a defective keyboard or user panel.

Calibration of air exchange sensor

Sensor calibration using StarView

Procedure for adjusting USDA and Cargo temperature probe offsets using StarView.

Replacing of unit

Replacement Evaporator motor and fan

Replacement Condenser motor and fan

Replacement of evaporator

Replacement of heating elements

Replacement of FC

Replacement of compressor

Replacement of compressor valve plate; cylinder head gasket

Service and maintenance

Evacuation of refrigerant

Procedure for evacuating refrigerant from the unit.

Compressor pump down, operation

Procedure for pump down of the compressor during normal operation.

Compressor pump down, replaced

Procedure for pump down of a new or replaced compressor.

Pump down of unit

Steps for pumping down the unit.

Pressure Test

Procedure for testing the piping system for leakages.

Charging of refrigerant

Procedure for charging an empty unit with refrigerant.

Charging of unit low on charge

Procedure for charging refrigerant for a unit low on charge.

Leakage detection

Methods for detecting leakage in the piping system.

Fan motors (in not using plug)

Measures to prevent wire damage to fan motors.

Drying filter

Replacing of drying filter

Procedure for replacing the drying filter.

Compressor

Check of oil level

Procedure for checking the compressor oil level.

Charging of oil

Draining of oil from compressor

Soldering

Welding

Tables

Datalog description

Explanation of datalog loggings for temperatures, pressures, and parameters.

Extended data:

Details of extended data logged, including pressures and currents.

Extended data 2 (only retrievable by StarView)

Details of extended data 2, retrievable only by StarView.

Alarms:

Reference to detailed alarm explanations and troubleshooting.

Brand	Star Cool
Model	SCU-20
Category	Refrigerator
Language	English