9XR PIC II/19XRV PIC III Hermetic Centrifugal Liquid Chillers Nominal cooling capacity 1000 - 5300 kW 50 Hz Installation, operation and maintenance instructions
Contents INITIAL START-UP CHECKLIST FOR 19XR HERMETIC CENTRIFUGAL LIQUID CHILLERS.......................... 5 19XR HERMETIC CENTRIFUGAL LIQUID CHILLER CONFIGURATION SETTINGS LOG................................ 7 1 - SAFETY CONSIDERATIONS................................................................................................................................................ 8 1.1 - Installation safety considerations........................................................................................
9 - 19XRV PIC III - Equipment presentation............................................................................................................ 58 9.1 - Environmental conditions...................................................................................................................................................... 58 9.2 - CE marking..............................................................................................................................................................
List of figures Fig. 1 - Model number nomenclature............................................................................................................................................ 11 Fig. 2 - 19XR machine components............................................................................................................................................... 12 Fig. 3 - Typical 19XR unit diagram.........................................................................................................
INITIAL START-UP CHECKLIST FOR 19XR HERMETIC CENTRIFUGAL LIQUID CHILLERS Name: Address: Town: Country: Post code: Job No.: Model: Serial No.
Field-installed starters only: Check continuity T1 to T1, etc. (disconnect cables from terminals 4, 5 and 6 of the motor to the starter). Megger starter: Do not megger a motor connected to a solid-state starter, unless the leads to the motor are disconnected and meggered.
19XR HERMETIC CENTRIFUGAL LIQUID CHILLER CONFIGURATION SETTINGS LOG (Remove and use for job file) Controller name ___________________________________ Element No. _______________________________________ Table description ___________________________________ Bus No.: _______________________________________ Table name: SETPOINT Setpoint table configuration sheet 19XR Description Base demand limit LCW setpoint ECW setpoint Range 40 to 100 12.2 to 48.9 12.2 to 48.
1 - SAFETY CONSIDERATIONS 19XR liquid chillers are designed to provide safe and reliable service when operated within design specifications. When operating this equipment, use good judgment and safety precautions to avoid damage to equipment and property or injury to personnel. Be sure you understand and follow the procedures and safety precautions contained in the machine instructions as well as those listed in this guide.
1.3 - Operating checks, valves Operating checks: Important information regarding the refrigerant used: This product contains fluorinated greenhouse gas covered by the Kyoto protocol. Refrigerant type: R-134a Global Warming Potential (GWP): 1300 Periodic inspections for refrigerant leaks may be required depending on European or local legislation. Please contact your local dealer for more information.
Do not loosen waterbox bolts until the waterbox has been completely drained. Do not loosen a packing gland nut before checking that the nut has a positive thread engagement. Periodically inspect all valves, fittings, and piping for corrosion, rust, leaks, or damage. During refrigerant removal and storage operations follow applicable regulations.
The ICVC software version number of your 19XR unit will be located on the ICVC module. Information on the unit control is not included in this manual. Refer to separate controls manual. All information given on unit-mounted starters refers to star-delta connected starters. Electronic starters have separate documentation. 2.3 - Chiller familiarization 19XR 2.3.1 - Chiller information plate The information plate is located below the control box. 2.3.
Fig. 2 - 19XR machine components 1 3 2 8 15 16 33 18 19 17 4 32 5 20 14 6 21 13 12 11 31 10 9 7 Front view 1. Guide vane actuator 2. Suction elbow 3. Compressor 4. Cooler valve* 5. Cooler pressure transducer 6. Condenser in/out temperature thermistors 7. Cooler in/out temperature thermistors 8. Machine identification nameplate (situated on the starter cabinet side) - see right-hand figure 'Rear view' 9. Refrigerant charging valve 10. Typical flange connections 11. Oil drain valve 12.
Fig. 3 - Typical 19XR unit diagram (for 19XRV particulars refer to Fig. 48) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. FLASC chamber Condenser water Condenser Condenser isolation valve Transmission Diffuser Guide vane motor Motor Guide vanes Impeller 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. Compressor Back pressure orifice Oil cooling Oil filter Oil pump Stator Rotor Refrigerant cooling isolation valve Float valve chamber Filter drier 2.3.
Fig. 4 - Lubrication system 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Rear motor bearing Forward motor bearing Labyrinth gas line Oil supply to forward high speed bearing Isolation valve Filter Sight glass Isolation valve Check valve Filter Eductor Oil heater Oil pump Oil motor Oil cooler Isolation valve Pressure transducer TXV bulb Motor cooling line 2.3.5 - Lubrication cycle 2.3.5.
After a power cut of over three hours to the PIC control the oil pump will be energized periodically when the power is restored. This helps to eliminate refrigerant that has migrated to the oil sump during the power failure. The controls will energize the pump for 60 seconds every 30 minutes until the chiller is started. Oil reclaim system The oil reclaim system returns oil lost from the compressor housing back to the oil reservoir by recovering the oil from two areas on the chiller.
Check all items against shipping list. Immediately notify the nearest Carrier representative if any item is missing. To prevent loss or damage (standard EN 378-2 11.22 k, annex A and B), leave all parts in original packages until beginning installation. All openings are closed with covers or plugs to prevent dirt and debris from entering machine components during shipping. A full operating oil charge is placed in the oil sump before shipment. 3.2.
3.3.2 - Rig machine components If the unit is disassembled for rigging, the weight of each machine element must be known: motor, compressor, heat exchangers with and without refrigerant charges, electrical equipment, special waterboxes, isolation valves, etc. This information is available on the dimensional drawing supplied with the machine. Follow the instructions given below and refer to the views of the unit and Figs. 7 to 10. IMPORTANT: Only a qualified service technician should perform this operation.
Fig. 7 - 19XR Cooler side view 1. 2. 3. 4. 5. 6. 7. Hot gas bypass (cut) Compressor suction elbow (unbolt) Oil reclaim line Starter connector (unbolt) Heat exchanger assembly (unbolt) Tube sheet Refrigerant motor cooling line (cut) 8. 9. 10. A B C Motor drain Compressor mounting (unbolt) Cooler liquid feed line Condenser Cooler Compressor Fig. 8 - 19XR Chiller top view 1. 2. 3. 4.
Fig. 9 - 19XR Compressor detail 1. 2. 3. 4. Motor temperature sensor cable Bearing temperature sensor cable connection (inside box) Compressor oil sump pressure cable Compressor oil sump temperature sensor cable 5. 6. 7. Compressor oil discharge pressure cable Discharge temperature sensor cable Connection for high pressurestat (DBK/SDBK) Fig. 10 - 19XR Rear view 12 1 2 11 3 4 10 5 9 8 6 7 1. 2. 3. 4. 5. 6.
3.3.3.2 - Dimensions/clearances For units with marine waterboxes, please refer to the dimensional drawings supplied with the unit.
3.3.3.3 - Maximum and minimum 19XR heat exchanger flow rates (l/s) Evaporator* Model Reference No. 3 4 5 6 7 8 * 30 31 32 35 36 37 40 41 42 45 46 47 50 51 52 55 56 57 60 61 62 65 66 67 70 71 72 75 76 77 80 81 82 85 86 87 1 pass Min. 38 46 54 38 46 54 62 70 77 62 70 77 83 93 100 83 93 100 107 115 122 107 115 122 124 140 152 124 140 152 140 174 188 160 174 188 Max.
3.4 - Install machine supports In order to provide adequate, long-lasting support for the unit, it is essential to choose the right grout and to apply it properly. Carrier advise using an epoxy-type, pre-mixed, non-shrinking grout only. Follow the manufacturer’s instructions for applying the grout. • Check the unit layout plans to determine the required grout thickness. • Apply wax to the jacking screws to facilitate subsequent removal from the grout.
3.4.3 - Install spring isolation Spring isolation may be purchased as an accessory from Carrier for field installation. It may also be field supplied and installed. Obtain specific details on spring mounting and machine weight distribution from job data. Also, check job data for methods to support and isolate pipes that are attached to spring isolated machines. Spring isolators may be placed directly under machine support plates or located under machine soleplates. See Fig. 15 - “19XR Spring isolation”.
3.5 - Connection of water piping For size and position of the heat exchanger water inlet and outlet connections refer to the certified dimensional drawings supplied with the unit. See. Fig. 17 - “Standard waterboxes and nozzle arrangements” 2. 3. 4. The water pipes must not transmit any radial or axial force nor any vibration to the heat exchangers.
Fig. 17 - Standard waterboxes and nozzle arrangements (19XR) Nozzle arrangements - nozzle-in-head waterboxes (19XR) Frames 3 -4 - 5 - 6 (see table below) W X Y Z Drive end Compressor end Condenser Evaporator Frames 7 - 8 (see table below) NOTE: Non-certified drawings. Refer to the certified dimensional drawings supplied with the unit or available on request, when designing an installation.
Fig. 18 - Optional pumpout system piping schematic with storage tank 1a. 1b. 2. 3. 4. 5. 6. 7. 8. 10. 11. 12. Safety valve on machine Safety valve on machine Service valve on pumpout unit Service valve on pumpout unit Service valve on pumpout unit Service valve on pumpout unit Storage tank vent Machine charging valve Compressor discharge valve Refrigerant charging valve Cooler isolation valve Condenser isolation valve 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.
3.5.2 - Install vent piping to relief devices The 19XR chiller is factory equipped with relief devices on the cooler and condenser shells. Refer to Fig. 20 - “Relief device locations” for size and location of relief devices. The safety valves are installed on ball valves, that are lead-sealed in the open position. These valves permit isolating and removing the safety valve for calibration and replacement. If a safety valve is replaced, do not leave the machine without safety valves.
3.6.3 - Recommended wire section The section and number of connectable power supply cables for the 19XRV machine are given in the specific chapter on each starter mode (starting with chapter 8). 3.6.4.2 - Communication wiring The standard external communication protocol is CCN. A JBus/ModBus communications board is available as an option.
Fig. 21 - Unit with unit-mounted starter/variable-frequency drive 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Disconnect Unit mounted starter with control (factory-installed) Guide vane motor Oil pump terminal box Vents Pressure gauges Chilled water pump Condenser water pump Chilled water pump starter Condenser water pump starter IMPORTANT: Ensure correct phasing is followed for proper motor rotation (clockwise).
3.6.6.2 - Freestanding, field-installed starter The starters must be designed and manufactured in accordance with applicable regulations. Fig. 22 illustrates the installation principle to be observed. IMPORTANT: Do not insulate terminals until wiring arrangement has been checked and approved by Carrier start-up personnel. Also, make sure correct phasing is followed for proper motor rotation (clockwise). Fig. 22 - Unit with separate starter/variable-frequency drive 15 16 18 1. 2. 3. 4. 5. 6. 7. 8. 9.
3.6.6.3 - High-voltage units High-voltage units can require special terminal preparation to prevent moisture condensation and electrical arcing. Follow electrical codes for high-voltage installation. The use of vinyl tape is not recommended; a method for high-voltage devices must be used. 3.6.6.4 - Electrical connection of the starter The earth of the control equipment and the control box (starter) must have equipotential. 3.6.6.
• • Installations with controlled earth equipotential If the earth potential difference is small: in general, if all elements connected to the CCN bus are installed in the same building and if the distance between the communicating devices is short: 1. Use of a twisted, unshielded cable is normally sufficient. If there is a problem created by strong radiated interference in the air (high frequency): 2.
Fig.
3.8 - Installation of a refrigerant leak detection module (option 159) Option 159: Independent refrigerant leak detection system. 3.8.1 - Description The European directive concerning fluorinated greenhouse gases (F-gas regulation) now requires that installations with 300 kg or more F-gas must be leak-tested at least every three months. This applies to 95% of 19XR/19XV units.
Fig. 27 - Detector support fixing Detector support 1. 2. 3. 4. Clip Fixing screw Balancing line Detector support Balancing module components Fig. 28 - Detector fixing Refrigerant detection sensor Fig. 29 - Changing SW2 switch 1 SW2 switch 1 of the CCM board in the “ON” status for the 4-20 mA signal Fixing of the detector on the support 3.8.4 - Sensor installation • Remove the clip (item 1) and the screw (item 2) that hold the balancing line (item 3).
4 - BEFORE INITIAL START-UP The instructions below apply to the standard machine and for all cases. For 19XRV machines additional checks are required: please refer to chapters 8 to 14 of this document. 4.1 - Necessary checks 4.1.
• • • Dissolved oxygen: Any sudden change in water oxygenation conditions must be avoided. It is as detrimental to deoxygenate the water by mixing it with inert gas as it is to over-oxygenate it by mixing it with pure oxygen. The disturbance of the oxygenation conditions encourages destabilisation of copper hydroxides and enlargement of particles. Specific resistance – electric conductivity: the higher the specific resistance, the slower the corrosion tendency. Values above 30 Ohm·m are desirable.
4. Leak determination - If an electronic leak detector indicates a leak, use a soap bubble solution to locate the leak. Total all leak rates for the entire chiller. Leakage at rates greater than 0.45 kg/year for the entire chiller must be repaired. Note total chiller leak rate on the start-up report. 5. If no leak is found during initial start-up procedures, complete the transfer of refrigerant gas from the pumpout storage tank to the chiller.
Fig. 31 - 19XR leak detection procedure Leak test of 19XR 1 - Attach compound gauge -101-0-3000 kPa to each vessel 2 - Note ambient temperature gauge readings Machines with refrigerant charge 1. Pressure on condenser vessel is at refrigerant saturated conditions 2. Cooler pressure reading is 103 kPa or higher. Machines with nitrogen holding charge 1. Pressure on condenser vessel is less than saturated refrigerant pressure. 2. Cooler pressure reading is below 103 kPa 3.
4.5 - Inspect wiring c. WARNING: Do not check voltage supply without proper equipment and precautions. Serious injury may result. CAUTION: Do not apply any kind of test voltage, even for a rotation check, if the chiller is under a dehydration vacuum. Insulation breakdown and serious damage may result. 1. 2. 3. 4. 5. 6. 7. Examine wiring for conformance to job wiring diagrams and to all applicable electrical codes.
4.8 - Check optional pumpout system controls and compressor Controls include an on/off switch, the compressor overloads, an internal thermostat, a compressor contactor, and a refrigerant high pressure cutout. The high pressure cutout is factory set to open at a pressure which depends on the approval code. Check that the water-cooled condenser has been connected. Loosen the compressor holddown bolts to allow free spring travel. Open the compressor suction and discharge service valves.
4.13 - Trimming refrigerant charge 5.2 - Dry run to test start-up sequence The 19XR is shipped with the correct charge for the design duty of the chiller. Trimming the charge can best be accomplished when design load is available. To trim, check the temperature difference between leaving chilled water temperature and cooler refrigerant temperature at full load design conditions. If necessary, add or remove refrigerant to bring the temperature difference to design conditions or minimum differential.
5.7.1 - Cooler-condenser Float chamber, relief devices, refrigerant charging valve, temperature sensor locations, pressure transducer locations, Schrader fittings, waterboxes and tubes, and vents and drains. CAUTION: Do not check motor rotation during coastdown. Rotation may have reversed during equalization of vessel pressures. 5.7.2 - Optional pumpout storage tank and pumpout system Transfer valves and pumpout system, refrigerant charging and pumpdown procedure, and relief devices. Fig.
6 - OPERATING INSTRUCTIONS 6.1 - Operator duties Become familiar with refrigeration chiller and related equipment before operating the chiller. 1. Prepare the system for start-up, start and stop the chiller, and place the system in a shutdown condition. 2. Maintain a log of operating conditions and document any abnormal readings. 3. Inspect the equipment, make routine adjustments, and perform a Control Test. Maintain the proper oil and refrigerant levels. 4.
6.7 - After extended shutdown 6.10 - Refrigeration log Be sure that the water system drains are closed. It is recommended: • to flush the water circuits to remove any soft rust which may have formed • to clean the tube vessel • to inspect the probe pressure taps and change them, if necessary. A refrigeration log, like the one shown in Fig. 33 provides a convenient checklist for routine inspection and maintenance and provides a continuous record of chiller performance.
or angle of guide vanes Water Temperature Pressure (inlet/outlet, l/s) Temperature (inlet/outlet) Condenser Refrigerant Pressure Water Temperature Pressure (inlet/outlet, l/s) Temperature (inlet/outlet) Compressor Bearing temperature Oil Pressure change Temperature Level (tank) Notes: Indicate shutdowns on safety controls, repairs made, oil or refrigerant added or removed, air exhausted and water drained from dehydrator. Include amounts.
7 - MAINTENANCE 7.1 - General maintenance During the unit operating life the service checks and tests must be carried out in accordance with applicable national regulations. If there are no similar criteria in local regulations, the information on checks during operation in annex C of standard EN 378-2 can be used. External visual checks: annex A and B of standard EN 378-2. Corrosion checks: annex D of standard EN 378-2.
Fig. 34 - Guide vane actuator linkage Another method of leak testing is to pressurize with nitrogen and to use a soap bubble solution or an ultrasonic leak detector to determine if leaks are present. This should only be done if all refrigerant has been evacuated from the vessel. 1. Install a copper tube from the pressure relief device on the cylinder to the refrigerant charging valve. 2. Never apply full cylinder pressure to the pressurizing line. Follow the listed sequence: Open the charging valve fully.
7.3 - Scheduled maintenance 8. Any work must be done by authorised personnel. Establish a regular maintenance schedule based on the actual chiller requirements such as chiller load, run hours, and water quality. The time intervals listed in this section are offered as guides to service only. 9. 7.3.1 - Service ontime The ICVC will display a SERVICE ONTIME value on the 'MAINSTAT' status screen.
7.3.7 - Oil reclaim filter The oil reclaim system has a strainer on the eductor suction line, a strainer on the discharge pressure line, and a filter on the cooler scavanging line. Replace the filter once per year or more often if filter condition indicates a need for more frequent replacement. Change the filter by closing the filter isolation valves (see Fig. 4 - “Lubrication circuit”) and progressively opening the flare fitting to relieve the pressure.
Fig. 36 - Compressor fits and clearances Thrust Compressor transmission area Thrust Low-speed shaft thrust disk High-speed shaft Compressor assembly torques Legend 2-3-4 See table below 5 Impeller clearance to shroud: allows 15.48 mm (0.024 in) forward movement from thrust position for Frame 3 compressors; 19.35 mm (0.030 in) for Frame 4 compressors. 6 Impeller shimming to be determined at assembly A-B-C-D-E-F-G = Max./min. installation clearances in mm (see table below): Compressor A types 0.
7.3.12 - Inspect the heat exchanger tubes Cooler Inspect and clean the cooler tubes at the end of the first operating season. Because these tubes have internal ridges, a rotary-type tube cleaning system is necessary to fully clean the tubes. Upon inspection, the tube condition will determine the scheduled frequency for cleaning and will indicate whether water treatment is adequate in the chilled water/brine circuit.
APPENDIX: Particulars OF 19XRV PIC III machines Specific operating and maintenance instructions for machines equipped with the Rockwell Liquid-Flo 2 variable-frequency drive (VFD). 8 - 19XRV PIC III - safety considerations for maintenance WARNING: For VFD box VFD 900-1169A do not disconnect the evaporator and condenser before VFD box 900-1169A has been disconnected and removed.
Fig. 37 - VFD cooling circuit 1. 2. 3. 4. 5. 6. 7. 8. 9. Condenser Evaporator VFD cooling circuit shut-off valve VFD cooling soleniod valve VFD cooling filter Filter-drier Filter-drier shut-off valves Schrader connection Motor cooling line sight-glass 1. 2. 3. 4. 5. 6. Condenser Evaporator VFD support bars Communication cable Oil heater power wiring cable Oil pump power wiring cable Fig.
Fig. 39 - VFD tunnel-side view • • Use an overhead or independent lifting bridge (nominal capacity of 2 tonnes minimum), attach a fall-arresting chain to each point to ensure safe lifting of the VFD. Lift to apply tension and remove the screws fixing the VFD control box to its support on the condenser. NotE: To re-assemble follow these instructions in reverse order. Connect the sensors and the cables after securing the installation of the main parts, to avoid the risk of damaging them. 8.2.
• Disconnect the following elements: The cable from the compressor oil temperature sensor. See Fig. 44 - “Compressor details”, item 4. The cable from the compressor bearing temperature sensor - see Fig. 44, item 2. The cable from the motor temperature sensor - see Fig. 44, item 1. The communication and connection cables between the VFD control box and the interface box. The discharge temperature sensor cable. The compressor oil pressure sensor cable - see Fig. 44, item 3.
Fig. 42 - Unit rear/side view 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
9 - 19XRV PIC III - Equipment presentation 9.3 - Description of electrical equipment elements 9.1 - Environmental conditions The electrical equipment of 19XRV machines is included in two separate control boxes: • The PIC III control box. The dimensions and components of the control boxes are the same for the full range up to 608 A.
9.3.2 - The compressor power variable-frequency drive The compressor power variable-frequency drive cabinet includes the following functional components (identified in accordance with the references on the wiring diagram): Fig. 46 - Variable-frequency drive cabinet for machines with maximum nominal current up to 608 A (19XR -506---912 and 19XR-506---922) Fig. 47 - Variable-frequency drive cabinet for machines with maximum nominal current above 608 A (19XR-506---802 and 19XR-506---812) 1. 2. 3. 4. 5.
9.4 - General compressor speed control principles The compressor speed is regulated by the control of the voltage/frequency values applied to the motor. The voltage applied, generated by pulse width modulation (PWM), is proportional to the frequency. Decreasing the compressor speed makes the machine more susceptible to surging; the prevention and protection algorithms against this phenomenon interact with the control of the speed-vane couple.
9.6 - Flow detection by the saturated suction temperature sensor A temperature sensor in the suction line is used by the PIC III control to check that the flow rate in the heat exchanger is not zero. If flow detection by measuring the presure differential in the water circuit is active, the two verifications are carried out in parallel and cumulated. Please refer to the 19XR PIC III controls manual. 9.
10.4 - Location of connection points and interfaces Refer to the dimensional drawings supplied with the machine. 10.5 - Electrical connections 10.5.1 - Power connections 19XRV units have only one power connection point, located in the VFD control box. Cable sizing is the responsibility of the installer and must comply with the characteristics and regulations specific to each installation site.
11.1.2 - Wiring and installation inspection For these checks the circuit breaker/disconnect switch of the VFD control box must be on the open position. Attention: Isolation using the main disconnect switch does not disconnect the voltage upstream to the power conductor connection terminals in the power supply to the machine. Check the electrical connections: tightening torques and connector tightening on the electronic boards.
12 - 19XRV PIC III - initial start-up Fig. 52 - 19XRV Communication gateway 12.1 - Motor rotation check The variable-frequency drive will not start the motor, if the phases connected upstream are reversed. The ICVC screen reports an alarm; two of the three incoming phases must be reversed. The variable-frequency drive does not detect phase reversals between variable-frequency drive and motor. The verification procedure described for the standard machine must be used. 12.
NET A and NET B communication status indicator LEDs and Status Cause Corrective action Off The gateway has no supply - Check that the connectors are or has a poor connection. well connected to the gateway. - Energize the power module. Red flashing Communication error. Re-initialise the supply to the power module. Red continuous The gateway has detected - Check that the control potentio-meters on the an error that makes any communication impossible. communication gateway are set to their original control.
Fig. 53 - 19XRV Communication interface board Location of the power module status LEDs for variable-frequency drives 19XR-506---912 and 19XR-506---922 Chopper status LEDs Rectifier status LEDs 14 - 19XRV PIC III - MAINTENANCE Safety consideration reminder: For the access conditions to the variable-frequency drive control box refer to chapter 1 of this document. 14.1 - Special precautions during maintenance 14.1.
APPENDIX: PARTICULARS OF 19XR PIC II UNITS WITH INTEGRATED PROGRESSIVE ElectroniC STARTER 15 - Maintenance safety considerations Access to low-voltage electrical equipment is dangerous and can result in death or serious injury. Personnel working on the control boxes must be qualified to work on low-voltage installations in accordance with the safety regulations applicable at the site.
16.4 - Soft starter operation 17.3 - Physical data Compressor start and stop are controlled by the ISM (1CR output). 17.3.1 - Unit rigging When the start-up command is received, the starter controls the power thyristors to initiate the power supply to the motor. The voltage reduction obtained by chopping is controlled by the starter to maintain the current at the value configured in the starter.
On the CCM board: • Remote set point reset (4-20 mA), J5-3/4 CCM • Demand limiter, J5-1/2 CCM Fig. 54 - Access to the motor terminals Tunnel/connection box Control box Compressor power connections On the ISM board: • Alarm report, J9-16/15 • Machine power consumption, J8-1/2 • Ice storage contact, J2-3/4 • Safety shut-down, J2-1/2 • Chilled-water temperature reset, J5-3/4 • Evaporator hydronic pump control (obligatory), J9-7/8 • Condenser hydronic pump control.
18.2.2 - Check the starter configuration The starter configuration is set at the factory. It can be checked and modified on the starter interface using the four navigation keys: OK ▲▼ ESC To select the menu, modify the value or register the parameters. To navigate in the menu or modify the values. To exit the current menu and pass to the next higher menu. The control procedure is described below with the default parameter settings from the factory.
19.2 - Compressor start-up and starter control adjustment When the compressor is started up, the starter controls the voltage applied to maintain the configured current (see chapters 16.4 and 18.2.2). The current limitation value set as the default is selected to ensure certain motor starting.
Order No: 11989-76, 07.2011 - Supersedes order No: 11989-76, 12.2009 + 11997-76, 06.2004. Manufacturer: Carrier SCS, Montluel, France. Manufacturer reserves the right to change any product specifications without notice. Printed in the European Union. The images in this document are for illustrative purposes only and are not part of any offer for sale or contract.
