Carrier 30GX Installation, Operation And Maintenance Instructions
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Carrier 30GX Installation, Operation And Maintenance Instructions

Screw-compressor air- and water-cooled liquid chillers
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30GX and 30HXC series
PRO-DIALOG
Screw-Compressor Air- and
Water-Cooled Liquid Chillers
50 Hz
PRO-DIALOG
O-DIALOG
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GLOBAL CHILLER
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Installation, operation and maintenance instructions
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  • Page 1 30GX and 30HXC series PRO-DIALOG Control Screw-Compressor Air- and Water-Cooled Liquid Chillers 50 Hz GLOBAL CHILLER PRO-DIALOG O-DIALOG MENU MENU Installation, operation and maintenance instructions...

  • Page 2: Table Of Contents

    Table of contents 1 - SAFETY CONSIDERATIONS ............................4 1.1 - General ................................... 4 1.2 - Avoiding electrocution ..............................4 2 - GENERAL DESCRIPTION ..............................4 2.1 - General .................................... 4 2.2 - Abbreviations used ................................4 3 - HARDWARE DESCRIPTION ............................5 3.1 - General ...................................
  • Page 3 4.2.10 - Description of the CONFIGURATION menu ..................... 24 4.2.11 - Description of the ALARMS menu ........................25 4.2.12 - Description of the ALARMS HISTORY menu ....................26 4.2.13 - Description of the OPERATING LOG menu ...................... 26 4.2.14 - Default user interface display ..........................26 4.3 - Summary interface ................................

  • Page 4: Safety Considerations

    CCN mode: the machine is controlled by commands from may be permitted access to electrical components. It is the Carrier Comfort Network (CCN). In this case a data particularly recommended that all sources of electricity to the communication cable is used to connect the unit to the unit be shut off before any work is begun.

  • Page 5: Hardware Description

    - Saturated Suction Temperature boards via the SIO bus. It can also communicate with elements - Thermal eXpansion Valve of the Carrier Comfort Network via the CCN bus. 3 - HARDWARE DESCRIPTION When “conF” shows on the user interface, this means that the basic board must be configured.

  • Page 6: The User Interface

    Slave board addresses 3.2.3 - The user interface The user interface is in two parts: BOARD DIP SWITCH (0 = open) • The main interface: This gives access to all of the control parameters for the unit. It consists of a 2-digit Board 4xDO #1 EXV circuit A primary display block and a secondary 4-digit display Board 4xDO #2 EXV circuit B...

  • Page 7: Light Emitting Diodes On Boards

    NOTE: When connecting the power supply for the boards, NOTE: The external connector of the EXV must be cleaned and maintain polarity. coated with silicone grease (Part No. 397 EE) to keep out condensation and prevent corrosion. In the event of a power supply interrupt, the unit restarts automatically without the need for an external command.

  • Page 8: Thermistors

    NOTE: To obtain a volt-free dry alarm contact, these outputs This is used to measure the refrigerant charging level. It must be interfaced with a relay supplied with 24 V a.c. (Carrier ensures optimised flow control in the evaporator, and is Part No.

  • Page 9: Evaporator Heater Contactor Control

    NOTE: In exceptional circumstances this contact can be flow or thermostat box control volt-free contacts** configured as active (configuration by Carrier Service) if the If these contacts open, the unit is shut down or prevented from unit operates in CCN mode as part of a master-slave link (see restarting and an alarm is raised.

  • Page 10: 0-10 V D.c. Input For Setpoint Reeset Or Demand Limit

    This output is used on air-cooled units with the heat reclaim a 0-10 V temperature sensor. option. It delivers a 4-20 mA or 0-10 V d.c. signal, depending on the configuration (which must be carried out by Carrier 0-10 Volt signal connection Service).

  • Page 11: Setting Up Pro-Dialog Plus Control

    4 - SETTING UP PRO-DIALOG PLUS CONTROL 4.2 - Main interface 4.1 - General 4.2.1 - Description The main interface gives access to the full array of operating The local interface enables a number of operating parameters to parameters on the unit via 10 menus (represented by 10 icons). be displayed and modified.

  • Page 12: Displaying/Modifying A Menu Item

    OPERATING TYPE 4.2.3 - Displaying/modifying a menu item Block 2 Display Description To access a menu item, first choose a menu. Each menu LOFF Local Off: the unit is halted in local mode. gives access to up to 20 items. Local operation - Local On - Cooling Setpoint 1: the unit is in local L-C1 control mode and is authorised to start up in cooling mode with...
  • Page 13 OPERATION PRESS BLOCK 3 BLOCK 1 BLOCK 2 4.2.3.2 - Selecting a menu item BUTTON DISPLAY DISPLAY buttons let you scroll through the menu items. Hold down the MENU button until the LED for Menu item numbers are displayed in block 1. The item number SETPOINT lights.
  • Page 14 ITEM INFORMATION TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATIONS ALARMS ALARMS HIST. OPERATING LOG Operating Evaporator Circuit A Cooling Remote Compressor Password Number of Historic Unit type water entering discharge setpoint 1 start/stop status active alarms/ alarm code 1** operating temperature pressure contact status resets...

  • Page 15: Description Of The Information Menu

    Depending on the configuration, the setpoint can Reserved for use by Carrier Service only be reset by reference to: Reserved for use by Carrier Service only • An external 0-10 V d.c. signal (supplied by customer or 0-10 V d.c.
  • Page 16 Item 6 Heating/cooling operation The procedure for cancelling demand This information is only available on units limit disablement in local mode is exactly configured as heat pumps. This item shows the as described above. When the setpoint current operating mode. LED flashes, press the procedure for cancelling demand limit disablement in The cooling mode is active in the following...

  • Page 17: Description Of The Temperatures Menu

    NOTE: The setpoint selection contact may in exceptional cases 4.2.5 - Description of the TEMPERATURES menu be configured as active (configuration by Carrier Service) if the unit operates in CCN mode as part of a master-slave link This menu displays the unit operating temperatures. All (see section 5.18).

  • Page 18: Setpoint Menu

    4.2.7 - SETPOINT menu Item 4 Reclaim setpoint This menu displays the unit setpoints. These points can be This item is used to display and modify modified when the unit is in Local operating mode. the reclaim setpoint. As in item 3, it is used to control condensation.
  • Page 19 Items 8-9-12 Voltage reset - Cooling mode values The reset is calculated as follows if the Items 13-14-17 Voltage reset - Heating mode values value of the “Voltage for zero reset” exceeds the value of the “Voltage for This function is only active when reset maximum reset”: based on an external 0-10 V d.c.
  • Page 20 DISPLAY DISPLAY comes from a calibrated outside temperature Hold down the MENU button until the LED for SETPOINT lights. probe (configuration accessible to Carrier Service only) with the following parameters: Press until block 1 • The probe delivers 0 volts at -20°C.

  • Page 21: Description Of The Input Menu

    However, the reset parameters remain Sample T reset configuration: accessible to any type of configuration and make it possible to obtain any In this example, the cooling setpoint starts combination of slope and reset origin in to be reset with effect from a T at the response to fluctuations in the value of evaporator of 5.0°C (full load) up to a...
  • Page 22 Item 0 Remote start/stop contact status Item 4 Demand limit contact status This contact is used to select the When closed this contact limits the following modes of operation when the demand of the unit by reference to the unit is in remote operating type (rEM): value of the demand limit setpoint, if the •...

  • Page 23: Description Of The Output/Test Menu

    4.2.9 - Description of the OUTPUT/TEST menu Item 1 Status/Test of loaders 4.2.9.1 - General These items display the status of the This menu displays the status of the controller outputs. When compressors on circuit A or B. They can the machine is fully stopped (LOFF) the outputs can be also test them independently.

  • Page 24: Description Of The Configuration Menu

    “OPEN” so as to force the valve to its configuration. The password has a maximum open position. default value of 11. This value can be modified by Carrier Service with the aid Item 12 Variable speed fan or condenser water of special tools. If the message “no” is...

  • Page 25: Description Of The Alarms Menu

    2 AL example). these reference voltage values (0 and 10 volts) are configurable (by Carrier Service only), so that their upper Press the A button to authorise the and lower values or the direction of the limitation slope can alarms to be reset. The Alarm menu LED flashes and 0 is be modified.

  • Page 26: Description Of The Alarms History Menu

    4.2.12 - Description of the ALARMS HISTORY menu 4.2.14 - Default user interface display This menu lets you display the last 10 alarms to have been The default display is activated when the keypad has remained reset. inactive for 5 minutes. The user interface displays in turn: •...

  • Page 27: Summary Interface

    4.3 - Summary interface 4.3.1 - General The summary interface includes a mimic diagram of the unit, together with pushbuttons and LEDs. It gives quick access to the main operating parameters of the unit. The summary interface shown below is for a dual-circuit water-cooled unit. MENU SUMMARY INTERFACE 4.3.2 - Description of the LEDs...

  • Page 28: Pro-Dialog Plus Control Operation

    This configuration (which must be carried out setpoint is increased, and in heating it is lowered). This by Carrier Service) is exceptional and generally only used for modification is in general a reaction to a drop in the load. For...

  • Page 29: Capacity Control

    Demand limit by 0-10 V d.c. signal NOTE: 30HX and 30GX units use 06N twin screw compressors. The screw compressor efficiency is better at full load than at part load. By default the close control configuration (tempera-...

  • Page 30: Motor Cooling Valve Control

    5.12 - Motor cooling valve control 5.17 - Start-up procedure - prelubrication The temperature of the motor windings is controlled to a This procedure describes the necessary procedures to ensure the setpoint of 85°C. This is achieved by cycling of the motor lubrication of the compressor before start-up.

  • Page 31: Balancing Running Times Between Master And Slave

    (recl_sw) contact or by NOTE: All parameters required for the master/slave function CCN. must be configured by Carrier Service. The heat reclaim function is active when: the heat reclaim 5.18.2 - Balancing running times between master and slave...

  • Page 32: Diagnostics - Troubleshooting

    6.3 - Resetting alarms 6 - DIAGNOSTICS - TROUBLESHOOTING When the cause of the alarm has been corrected the alarm can be reset, depending on the type, either automatically on return 6.1 - GENERAL to normal, or manually when action has been taken on the unit. The PRO-DIALOG Plus control system has many fault tracing A manual reset must be run from the main interface using the aid functions.
  • Page 33 ALARM CODE DESCRIPTIONS Alarm Description Why was this alarm Action taken Reset type Probable cause code generated? by the control Evaporator entering fluid thermistor failure Thermistor outside range -40 to 118°C Unit shut down Automatic Thermistor or wiring fault Evaporator leaving fluid thermistor failure Thermistor outside range -40 to 118°C Unit shut down Automatic...
  • Page 34 2 - If shut-down control is active (accessible by Carrier Service) and con- trol is closed, when pump is deactivated Condenser water flow loss/thermostat box Water flow switch (water-cooled units) Unit shut down...
  • Page 35 ALARM CODE DESCRIPTIONS (cont.) Alarm Description Why was this alarm Action taken Reset type Probable cause code generated? by the control Communication loss with the 4 x DO heat reclaim board 4 x DO board does not respond Unit shut down Automatic Defective bus wiring, incorrect address or defective board...
  • Page 36 Order No. 13056-76, 03 1999. Supersedes order No.: 13056-76, April 1998 Manufactured by: Carrier S.A., Montluel, France. Manufacturer reserves the right to change any product specifications without notice. Printed in the Netherlands on totally chlorine-free paper.

This manual is also suitable for:

30hcx

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