Inhaltsverzeichnis
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HX Digital
Recirculating Chiller
NESLAB Manual P/N 002002
Rev. 08/20/97
Installation, Operation,
and Maintenance Manual
NESLAB online
Product Service Information, Electronic Catalog,
Applications Notes, MSDS Forms, e-mail.
(603)427-2490
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Inhaltsverzeichnis
Inhaltszusammenfassung für NESLAB HX Digital Serie
- Seite 1 HX Digital Recirculating Chiller NESLAB Manual P/N 002002 Rev. 08/20/97 Installation, Operation, and Maintenance Manual NESLAB online Product Service Information, Electronic Catalog, Applications Notes, MSDS Forms, e-mail. (603)427-2490 Set modem to 8-N-1 protocol, 1200 - 14400 baud Voice Info: (800) 4-NESLAB Comments on this manual can be sent to: NESLAB@lifesciences.com...
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Seite 2: Inhaltsverzeichnis
HX Analog/Digital Recirculating Chiller Installation, Operation, and Maintenance Manual Table of Contents PREFACE Compliance ..................... 5 Unpacking ....................5 Warranty ....................5 After-sale Support ................... 5 SECTION I Safety Warnings ....................6 SECTION II General Information Description ....................7 Specifications ..................8 Cooling Capacity .................. - Seite 3 SECTION VI Special Features Pump Motor Overload Protector ............30 Heater Package (Optional) ..............31 Remote Condenser (Optional) .............. 33 Nitrogen Purge (Optional) ..............33 Particulate Filter (Optional)..............33 15 Pin Accessory Connector (Optional) ..........34 External Pressure Regulator (Optional) ..........35 Automatic Refill Device (Optional) ............
- Seite 4 Water-Cooled HX Series Quick Reference Operating Procedures Installation Digital Controller Temperature Adjustment Position the unit in a clean environment with easy To display the temperature setpoint, press and access to facility cooling water and a drain. The facility hold the DISPLAY switch. To adjust the water requirements must meet those specified in the temperature setpoint, press and hold the instruction or unit performance will be derated.
- Seite 5 Air-Cooled HX Series Quick Reference Operating Procedures Installation Analog Controller Temperature Adjustment Position the unit so the intake and discharge are To adjust the temperature setpoint, turn the °C dial not impeded. Inadequate ventilation will cause a on the front of the unit to the desired temperature. reduction in cooling capacity and, in extreme Digital Controller Temperature Adjustment cases, compressor failure.
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Seite 6: Preface
After-sale Support NESLAB is committed to customer service both during and after the sale. If you have questions concerning the operation of your unit or the information in this manual, contact our Sales Department. If your unit fails to operate properly or if you have questions concerning spare parts or Service Contracts, contact our Service Department. -
Seite 7: Warnings
Always empty the fluid reservoir before moving the unit. Never operate equipment with damaged power cords. Refer service and repairs to a qualified NESLAB technician. In addition to the safety warnings listed above, warnings are posted throughout the manual. These warnings are designated by an exclamation mark inside an equilateral triangle with text highlighted in bold. -
Seite 8: Description
Section II General Information Description The HX Series Recirculating Chiller is designed to provide a continuous flow of cooling fluid at a constant temperature and volume. The unit consists of an air-cooled or water-cooled refrigeration system, a fluid reservoir, a fluid recirculation pump, and a temperature controller. HX units are available with a large number of options. -
Seite 9: Specifications
Specifications HX-75 HX-100 HX-150 +5°C to +35°C Temperature Range ±0.1°C Temperature Stability Unit Dimensions (H x W x D) 35 ¾ x 23 ¼ x 18 ¾ x 26 ¼ x 21 Inches 90.8 x 59.0 x 47.6 100.6 x 66.6 x 53.6 Centimeters Reservoir Volume Gallons... -
Seite 10: Cooling Capacity
Cooling Capacity Cooling capacity will vary depending on fluid temperature, ambient temperature, and cooling fluid. Cooling capacities for models HX-75 through HX-750 were obtained under the following conditions: air-cooled unit operating at +20°C (+68°F) ambient temperature. cooling fluid with specific heat of 1.0 was used for fluid temperatures from +5°C to +35°C. -
Seite 11: Pump Capacity
HX-500 & 750 A=HX-750, 60Hz B=HX-750, 50Hz C=HX-500, 60Hz D=HX-500, 50Hz Fluid Temperature (°C) Pump Capacity HX units are available with one of three standard pump types: positive displacement (PD), centrifugal (CP), and turbine (TU). Refer to the pump identification label on the rear of the case top or rear of analog temperature controller to identify the specific pump in your unit. - Seite 12 Bar PSI A=CP-25, 50Hz B=CP-25, 60Hz C=CP-55, 50Hz D=CP-55, 60Hz E=CP-75, 50Hz F=CP-75, 60Hz D, E 30 Gpm 18.9 37.9 56.8 60.5 94.6 113.6 Lpm FLOW TU-3, 5 & 6 Bar PSI A=TU-3, 50Hz B=TU-3, 60Hz C=TU-5, 50Hz D=TU-5, 60Hz E=TU-6, 50Hz F=TU-6, 60Hz 24 Gpm...
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Seite 13: Site (Air-Cooled Units)
Section III Installation Site (Air-cooled Units) The unit should be located in a laboratory or clean industrial environment where ambient temperatures are inside the range of +55°F to +95°F (+13°C to +35°C). The unit will retain its full rated capacity in ambient temperatures to approximately +75°F (+24°C). - Seite 14 On digital models HX-100 through HX-750 the stirrer motor is located under the case top. (Models HX-500 and HX-750 have two stirrer motors.) Heat generated by the stirrer motor is discharged through vents in the case top. Do not block the vents. A minimum clearance of 2 inches (5 centimeters) is necessary for adequate ventilation.
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Seite 15: Site (Water-Cooled Units)
Site (Water-cooled units) The unit should be located in a laboratory or clean industrial environment with easy access to a facility cooling water supply and a drain. All units are equipped with castors for easy movement. This allows the unit to be placed in a small area, as long as there is ample space for the unit to be moved for access on all four sides. - Seite 16 Temperature of cooling water supply +55°F (+13°C) +65°F (+18°C) +75°F (+24°C) +85°F (+29°C) HX-75 Flow Rate 0.7* Gallons per minute Liters per minute 2.8* 11.4 Pressure Drop 1.5* 0.10* 0.13 0.24 0.55 HX-100 Flow Rate Gallons per minute 1.0* Liters per minute 3.7* 13.2 Pressure Drop...
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Seite 17: Electrical Requirements
Electrical Requirements Refer to the table below to determine electrical requirements of your unit. Verify the requirements by reviewing the ratings listed on the serial number label on the rear of the case top or rear of analog temperature controller. HX-75 HX-100 HX-150... -
Seite 18: Plumbing Requirements
The unit construction provides extra protection against the risk of electric shock by grounding appropriate metal parts. The extra protection may not function unless the power cord is connected to a properly grounded outlet. It is the user’s responsibility to assure a proper ground connection is provided. - Seite 19 If substantial lengths of tubing are necessary, insulation may be required to prevent loss of cooling capacity. Tubing and insulation are available from NESLAB. Contact our Sales Department for more information (see Preface, After-sale Support). It is important to keep the distance between the unit and the instrument being cooled as short as possible, and to use the largest diameter tubing practical.
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Seite 20: Fluids
Never use flammable or corrosive fluids with this unit. Distilled and deionized water may be aggressive and cause material corrosion. Please contact NESLAB before subjecting this unit to prolonged exposure to distilled or deionized water. Tap water is the recommended fluid for operation from +8°C to +35°C. -
Seite 21: Water Quality Recommendations
Water Quality Recommendations Unfavorably high total ionized solids (TIS) can accelerate the rate of galvanic corrosion. These contaminants can function as electrolytes which increase the potential for galvanic cell corrosion and lead to localized corrosion such as pitting which can be observed at the studs and on the outside surface of cooling coils. -
Seite 22: Filling Requirements
Filling Requirements The reservoir access panel is located at the left rear corner of the case top, below an access panel. To open the access panel, slide the latch back (towards the rear of the unit) and lift. Loosen the thumbscrews and remove the reservoir cover. Fill the fluid reservoir with cooling fluid to within 1 inch of the top. -
Seite 23: Temperature Controllers
Section IV Temperature Controllers Temperature Controllers The standard temperature controllers available with HX units are: Digital (Panel mounted or Remote) and Digital with Interlock. This section explains the installation (if applicable) and operation of the controllers. Refrigeration Control On “standard” units, the refrigeration compressor runs continuously, unless the fluid temperature exceeds +40°C. -
Seite 24: Digital (Panel Mounted)
Digital (Panel mounted) Digital Temperature Controller Temperature Adjustment To display the temperature setpoint, press and hold the Setpoint/Actual Temp button. To adjust the setpoint, press and hold the Setpoint/Actual Temp button and turn the Adjust dial until the desired temperature setpoint is indicated on the Temp°C LED display. - Seite 25 Digital Temperature Controller (remote) Digital Temperature Controller Installation Controller dimensions are 4¾" x 7¾" x 3¾" (H x W x D). Connect the Digital remote box to the unit by securing the connector on the remote box’s cable to the Control Box Connector receptacle on the operator panel on the front of the case top.
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Seite 26: Digital With Interlock
Temperature Adjustment To display the temperature setpoint, press and hold the DISPLAY/SETPOINT button. To adjust the setpoint, press and hold the DISPLAY/SETPOINT button and turn the ADJUST SETPOINT dial until the desired temperature setpoint is indicated on the DEGREES CELSIUS LED display. Once the setpoint is adjusted, release the DISPLAY/SETPOINT button. - Seite 27 Temperature Adjustment To display the temperature setpoint, press and hold the DISPLAY button. To adjust the temperature setpoint, press and hold the DISPLAY button and turn the ADJUST dial until the desired temperature setpoint is indicated on the TEMPERATURE °C LED display. Once the setpoint is adjusted, release the DISPLAY button.
- Seite 28 Low Fluid Level Monitor The low fluid level monitor is connected to a float switch in the reservoir. If the controller is equipped with a LOW LEVEL indicator, the low level monitor is not connected to the fault circuit. The indicator will light if the reservoir cooling fluid drops below the operating level.
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Seite 29: Flow Control
Section V Operation Flow Control The flow control handle is connected to a valve that controls the flow rate of the cooling fluid to the instrument being cooled. The handle is located on the right side of the unit and is labelled RECIRCULATING FLOW CONTROL. RECIRCULATING PRESSURE gauge Flow Control Valve When the handle is in the “+”... -
Seite 30: Pressure Gauge
Pressure Gauge The RECIRCULATING PRESSURE gauge is located next to the flow control handle. The gauge indicates the operating pressure of the system. Pressure Relief Valve (PD and TU Pumps Only) Units with a PD-2 or any TU type pump have an adjustable pressure relief valve. -
Seite 31: Pump Motor Overload Protector
Section VI Special Features Pump Motor Overload Protector Refer to the serial number label for the specific electrical requirements of your unit; specifically, identify the phase requirements of your unit. The pump motor overload protector prevents the pump motor from exposure to excessive current. -
Seite 32: Heater Package (Optional)
Heater Package (Optional) The heater package option consists of an immersion heater in the unit’s fluid reservoir, a high temperature limit device, a solid state zero-crossing relay, a heater ENABLE/DISABLE switch and a FAULT indicator. The ENABLE/ DISABLE switch and the FAULT indicator are located on a small control box appended to the right side of the case top. - Seite 33 Reset Button Stirrer Motor Connection High Temperature Limit Device You must identify and correct the fault before restarting the unit. The protection device and the heater power connections are located in a small stainless steel box on top of the fluid reservoir. The protection device has a reset button and a temperature limit adjustment shaft.
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Seite 34: Remote Condenser (Optional)
Should the unit's performance be degraded, check the filter. Filters are available from NESLAB, contact our Customer Service Center. Before calling refer to the serial number label on the rear of the unit to obtain... -
Seite 35: Pin Accessory Connector (Optional)
15 pin Accessory Connector (Optional) Units with digital controllers may be modified with a 15 pin accessory connector. To enable the connector slide the LOCAL/REMOTE switch on the temperature controller to the REMOTE position. The pin out information is listed below. 15 14 13 12 11 10 9 15 pin D-subminiature female receptacle Pin #... -
Seite 36: External Pressure Regulator (Optional)
External Pressure Regulator (Optional) For applications requiring a maximum pressure less than 55 psi, an External Pressure Reducer (EPR) is available. An EPR allows an adjustable operating pressure of 10 to 50 psi. If the pressure of the fluid leaving the unit exceeds the valve setting the relief valve will bypass the fluid back into the unit to relieve the pressure. -
Seite 37: Automatic Refill Device (Optional)
Connect this fitting to a make-up fluid source using inch ID flexible tubing. Make sure all tubing connections are securely clamped. Tubing is available from NESLAB. Contact our Sales Department for more information (see Preface, After-sale Support). AUTO REFILL - 36 -... -
Seite 38: Service Contracts
Section VII Maintenance Service Contracts NESLAB offers on-site Service Contracts that are designed to provide extended life and minimal down-time for your unit. For more information, contact our Service Department (see Preface, After-sale Support). Condenser Cleaning (Air-cooled units only) For proper operation, the unit needs to pull substantial amounts of air through a finned condenser. -
Seite 39: Configuration
Section VIII Service For personal safety and equipment reliability, the following procedure should only be performed by a qualified technician. Contact our Service Department for assistance (see Preface, After-sale Support). Configuration Case Top The unit has a hinged case top to allow service access. The case top is secured to the top of the unit base by a hinge between the case top and base (along the rear of the unit), and by two spring clips located at the front corners, see illustration on page 7. -
Seite 40: Reservoir Cleaning
Stirrer motor Stirrer motor wire connection Temperature sensor and mounting plate Ground stud and stirrer motor ground stud Strainer Access Cover Float switch and mounting bracket Remove the stainless steel screws that secure the reservoir cover to the reservoir. Remove the cover and place it to one side in a manner that protects the stirrer motor blades from being bent. -
Seite 41: Pump Strainer (Pd And Tu Pumps Only)
Do not use steel wool or other abrasive materials. They can scratch the stainless steel surface and initiate rusting. When the reservoir is clean, re-assemble the cover assembly and close the case top. Refer to Section III, Filling Requirements for instructions on replacing the cooling fluid. -
Seite 42: Flow Filter Strainer
Flow Filter Strainer (Optional) Unit's equipped with flow switches have flow filter strainers located behind the top right access panel on the inlet side of the flow switch. Unscrew the locknut and remove the screen. Clean the screen by rinsing it with water. -
Seite 43: Pump Lubrication
Pump Lubrication Units with PD-2 pumps require pump motor lubrication. Refer to the pump identification label on the rear of the case top to identify the specific pump in your unit. Motors used to drive the pump are manufactured by several companies. These motors use sleeve type bearings with large oil reservoirs. -
Seite 44: Suction Discharge Pressure And Speed Check
HX-300 73 - 78 HX-500 75 - 82 HX-750 50 - 60 1. 27°C unit temperature, water in reservoir, access panel removed. 2. 25°C unit temperature, water in reservoir. NOTE: For low temperature units please call NESLAB. - 43 -... -
Seite 45: Troubleshooting
Section IX Troubleshooting Checklist Unit will not start For CE Mark units, check the position of the circuit breaker on the right side of the unit. Check power source for correct voltage output. Refer to the serial number label on the rear of the unit or rear of analog temperature controller for the specific electrical requirements of your unit. -
Seite 46: Refrigeration Flow (Hx-75 Through Hx-150)
Section X Diagrams Refrigeration Flow Diagram (HX-75 through HX-150) Capillary Tube Hot Gas Bypass Valve Compressor Solenoid Valve (NC) Evaporator Coil Dryer Reservoir Condenser Refrigeration Flow Diagram (HX-200 through HX-750) Solenoid Accumulator valve Hot gas bypass valve Compressor Solenoid valve (NC) Evaporator coil Dryer Reservoir... -
Seite 47: Pump Flow (Cp Pumps)
Pump Flow Diagram (CP Pumps) Reservoir Flow Switch and Strainer (Optional) Check valve Pump 2-way flow control valve Supply Return Pressure gauge Pump Flow Diagram (PD and TU Pumps) Reservoir Relief valve Strainer Flow Switch and Strainer (Optional) Check valve 3-way fllow control valve Pressure gauge... -
Seite 48: Dimensions
Dimensions HX75 HX100/HX150 HX200/HX300 HX500 HX750* Unit Dimensions Dimension A 25 3/8 25¼ Dimension B 15¼ 19¼ 23½ 33¾ Dimension C 8¼ 9¼ 5½ Dimension D 7¼ 7½ 9½ Dimension E Dimension F 5½ Dimension G 1½ 2¼ Dimension H 2½... - Seite 49 Blank page. - 48 -...
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Seite 50: Appendix A International Quick Reference Guides
ADJUST-Schalter so lange, bis die Für den Betrieb im Arbeits-Temperaturbereich von gewünschte Temperatur in der Digitalanzeige +8°C bis +80°C empfiehlt NESLAB Leitungswasser angezeigt wird. Wenn die Temperatur eingestellt ist, als Kühlmittel, bei niedrigeren Temperaturen als lassen Sie den Display-Schalter los. Die +8°C muß... - Seite 51 Kühlflüssigkeit zur Hand haben, um gegebenenfalls nachfüllen zu können. Für den Betrieb im Arbeits-Temperaturbereich von +8°C bis +80°C empfiehlt NESLAB Leitungswasser als Kühlmittel, bei niedrigeren Temperaturen als +8°C muß eine nicht gefrierende Flüssigkeit verwendet werden. Wir empfehlen eine Mischung...
- Seite 52 Um sich den Temperatur-Setpoint anzeigen zu Für den Betrieb im Arbeits-Temperaturbereich von lassen, drücken Sie den DISPLAY-Schalter und +8°C bis +80°C empfiehlt NESLAB Leitungswasser halten Sie ihn gedrückt. Um den Temperatur- als Kühlmittel, bei niedrigeren Temperaturen als Setpoint einzustellen, drücken Sie den Display- +8°C muß...
- Seite 53 Flußsteuerung Der RECIRCULATION FLOW CONTROL Hebel kontrolliert die Durchflußmenge der Kühlflüssigkeit zu Ihrer Anwendung. In der „+“-Stellung wird die gesamte verfügbare Kühlflüssigkeit an die Anwendung abgegeben, in der „-“-Stellung wird keine Kühlflüssigkeit an die Anwendung abgegeben. Wartung Überprüfen Sie regelmäßig die Kühlflüssigkeit im Reservoir.
- Seite 54 Luftkølet HX-serie Kvik referance. Installation: Opstilles i rene omgivelser. Steder med meget støv skal undgåes, og periodisk rensning skal udføres, hvis utilsigtet nedbrud skal undgåes. Opbygning af støv vil medføre fald i kølekapasiteten og i værste fald overophedning af systemet. Check at netspændingen er den nominelle 240V ±...
- Seite 55 Vandkølet HX-serie Kvik referance. Installation: Opstilles i rene omgivelser Steder med meget støv skal undgås og periodisk rensning skal udføres, hvis utilsigtet nedbrud skal undgås. Opbygning af støv vil medføre fald i kølekapasiteten og i værdste fald overophedning af systemet. Check at netspændingen er den nominelle 240V ±...
- Seite 56 Watergekoelde HX Series, Handleiding voor snelle installatie-procedures Operationeel gebruik Installatie Alvorens het apparaat te starten, dient men de Plaats het apparaat in een ruimte waar elektrische- en slangaansluitingen te controleren. gebouwenwater en de mogelijkheid tot afvoer Controleer tevens of het systeem gevuld is met daarvan binnen handbereik zijn.
- Seite 57 Periodiek Onderhoud De vloeistof in het reservoir dient regelmatig gecontroleerd te worden. Indien reiniging noodzakelijk is, zal het reservoir schoongespoeld moeten worden met een vloeistof welke gelijk is aan het circulatiesysteem en de koelvloeistof.. De koelvloeistof dient periodiek vervangen te worden.
- Seite 58 Luchtgekoelde HX Series, Handleiding voor snelle installatie-procedures Installatie Operationeel gebruik Plaats het apparaat op een dusdanige manier dat Alvorens het apparaat in gebruik te nemen, gelieve luchttoevoer en afvoer niet wordt belemmerd. eerst alle elektrische- en slangaansluitingen te Inadequate ventilatie kan leiden tot afname van controleren.
- Seite 59 Flow Control Met de RECIRCULATING FLOW CONTROL kunt u het debiet van uw applicatie regelen. De “+” positie geeft u een volledig debiet, de “-” positie geeft geen debiet. Periodiek Onderhoud De vloeistof in het reservoir dient regelmatig gecontroleerd te worden. Indien reiniging noodzakelijk is, zal het reservoir schoongespoeld moeten worden met een vloeistof, welke gelijk is aan het circulatiesysteem en de koelvloeistof.
- Seite 60 Kortfattad Bruksanvisning för Vattenkyld HX-serie Analog Kontroll, Temperatur Ändring Installation För att ändra den önskade förbestämda Ställ maskinen i en ren miljö med lätt tillgång till temperaturen, vrid °C knappen på framsidan av kylningsvatten och ett vattenavlopp. maskinen tills den önskade temperaturen är nådd. Kylningsvattnet måste möta de krav som är specifierade i instruktionerna annars minskas Digital Kontroll, Temperatur Ändring...
- Seite 61 Kortfattad Bruksanvisning för Luft Kyld HX-serie Installation Analog Kontroll, Temperatur Ändring Ställ maskinen så att luft intaget och uttaget inte är För att ändra den önskade förbestämda blockerade. Otillräcklig ventilation leder till minskad temperaturen, vrid °C knappen på framsidan av kylningskapacitet och vid vissa tillfällen kan maskinen tills den önskade temperaturen är nådd.
- Seite 62 NOTICE D’UTILISATION REFROIDISSEURS TYPE HX V ERSION NINSTALLATION Après avoir éteint l’appareil, attendre environ cinq Ces appareils ont un système de réfrigération minutes avant de le rallumer, pour un bon refroidi par air. L ’air est aspiré sur le devant et rejeté équilibrage des pressions.Autrement, le cycle au à...
- Seite 63 NOTICE D’UTILISATION REFROIDISSEURS TYPE HX V ERSION EAU INSTALLATION quand l’appareil est en mode de “ By-pass ”. Installer l’appareil dans un environnement propre Quand la température obtenue approche de la avec un accès facile à une arrivée d’eau. Cette température souhaitée, le voyant s’allume et source d’eau doit correspondre à...
- Seite 64 PROCEDIMIENTOS DE OPERACION DE REFERENCIA RAPIDA PARA LA SERIE HX REFRIGERADA POR AGUA INSTALACION interruptor de encendido en posición ON. Los LED Sitúe la unidad en un entorno limpio con fácil Cool y Idle del panel frontal indican la situación del acceso a la instalación de agua de enfriamiento y sistema de refrigeración.
- Seite 65 Inspeccione periódicamente el fluido del reservorio. Si es necesaria una limpieza, rocíe el reservorio con un fluido de limpieza compatible con el sistema de circulación y el fluido refrigerante. El fluido refrigerante debe sustituirse periódicamente. Cuando se funciona a baja temperatura, la concentración de agua en el fluido refrigerante aumentará...
- Seite 66 PROCEDIMIENTOS DE OPERACION DE REFERENCIA RAPIDA PARA LA SERIE HX REFRIGERADA POR AIRE INSTALACION OPERACION Sitúe la unidad para no impedir la entrada y Antes de poner en marcha la unidad, compruebe descarga. Una ventilación inadecuada causará todas las conexiones eléctricas y de tuberías. una reducción en la capacidad de enfriamiento y, Asegúrese de que el sistema circulador se ha en casos extremos, un fallo en el compresor.
- Seite 67 CONTROL DE FLUJO El mango RECIRCULATING FLOW CONTROL controla la escala de flujo a su aplicación. En la posición + recibirá flujo completo, en la posición - no hay flujo. MANTENIMIENTO PERIODICO Inspeccione periódicamente el fluido del reservorio. Si es necesaria una limpieza, rocíe el reservorio con un fluido de limpieza compatible con el sistema de circulación y el fluido refrigerante.
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Seite 68: Appendix B 380V Wye Modification
APPENDIX B 380V WYE MODIFICATION. Refer to the serial number label on the rear of the unit for the specific electrical require- ments of your unit. For personal safety and equipment reliability, the following procedure should only be performed by a qualified service technician familiar with the safety precautions required for working inside an energized disconnect box. -
Seite 69: Warranty
NESLAB Instruments, Inc. warrants for 12 months from date of shipment any NESLAB unit according to the following terms. Any part of the unit manufactured or supplied by NESLAB and found in the reasonable judgment of NESLAB to be defective in material or workmanship will be repaired at an authorized NESLAB Repair Depot without charge for parts or labor.