Thermo Scientific NESLAB HX Series Installation, Operation, Basic Maintenance
Recirculating chiller
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- Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
- Page 2 Thermo Scientific NESLAB HX Series Recirculating Chiller Thermo Scientific Manual P/N U00506 Rev. 03/26/08 Installation Operation Basic Maintenance Visit our Web site at: http://www.thermofisher.com/tc Product Service Information, Applications Notes, MSDS Forms, e-mail. Voice Info: (800) 258-0830 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 3 Thermo Fisher Scientific Sales, Service, and Customer Support 25 Nimble Hill Road 25 Nimble Hill Road Newington, NH 03801 Newington, NH 03801 Tel : (800) 258-0830 or Tel: (800) 258-0830 (603) 436-9444 Sales: 8:00 am to 5:00 pm Fax : (603) 436-8411 Service and Support: 8:00 am to 6:00 pm www.thermofisher.com/tc Monday through Friday (Eastern Time)
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Page 4: Table Of Contents
HX Series Recirculating Chiller Installation and Operation Manual Table of Contents PREFACE Compliance ..................... 5 WEEE/RoHS ................... 5 After-sale Support ..................6 Unpacking ....................7 Warranty ....................7 Feedback ....................7 SECTION I Safety Warnings ....................8 SECTION II General Information Description .................... - Page 5 SECTION VI Optional Features External Pressure Regulator ..............33 Particulate Filters ................... 34 SECTION VII Maintenance Service Contracts ................... 35 Condenser Cleaning ................35 Hoses ..................... 35 Algae ...................... 35 SECTION VIII Service Configuration ................... 37 Reservoir Cleaning .................. 38 Pump Strainer ..................
- Page 6 Quick Start Procedures Air-Cooled Models Installation When the unit is shut off, wait five minutes before Position the unit so the intake and discharge are not restarting to allow time for the refrigeration impeded. Inadequate ventilation will cause a pressures to equalize. If the pressures are not reduction in cooling capacity and, in extreme cases, allowed to equalize, the compressor will short- compressor failure.
- Page 7 Quick Start Procedures Water-Cooled Models Installation Position the unit in a clean environment with easy When the unit is shut off, wait five minutes before access to facility cooling water and a drain. The restarting to allow time for the refrigeration facility water requirements must meet those pressures to equalize.
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Page 8: Preface
Further information on Thermo Fisher Scientific’s compliance with these Directives, the recyclers in your country, and information on Thermo Scientific products which may assist the detection of substances subject to the RoHS Directive are available at: www.thermo.com/WEEERoHS... -
Page 9: After-Sale Support
After-sale Support Thermo Fisher Scientifc 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. -
Page 10: Unpacking
Unpacking Retain all cartons and packing material until the unit is operated and found to be in good condition. If the unit shows external or internal damage contact the transportation company and file a damage claim. Under ICC regulations, this is your responsibility. -
Page 11: Warnings
Section I Safety Warnings Make sure you read and understand all instructions and safety precautions listed in this manual before installing or operating your unit. If you have any questions concerning the operation of your unit or the information in this manual, contact our Sales Department for assistance (see Preface, After-sale Support). -
Page 12: General Information
Section II General Information Description The Thermo Scientific NESLAB HX Series Recirculating Chillers are designed to provide a continuous flow of cooling fluid at a constant temperature and volume. Overvoltage Category Pollution Degree The unit consists of an air-cooled or water-cooled refrigeration system, a fluid reservoir, a fluid recirculation pump, and a digital temperature controller. -
Page 13: Specifications
Specifications HX 75 HX 150 HX 300 Process Fluid Temperature Range +5°C to +35°C Temperature Stability ±0.1°C Unit Dimensions (H x W x D) Inches 36¾ x 23¼ x 18¾ x 26¼ x 21 x 33¾ x 25¼ Centimeters 93.3 x 59.0 x 47.6 103.2 x 66.7 x 53.6 119.1 x 85.7 x 64.1 Reservoir Volume... -
Page 14: Cooling Capacity
Cooling Capacity Cooling capacity will vary depending on fluid temperature, ambient temperature, and cooling fluid. Cooling capacities 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. -
Page 15: Pump Capacity
HX 750 A= HX 750, 60Hz B= HX 750, 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 name plate label on the rear of the case top to identify the specific pump in your unit. PD2 &... - Page 16 Bar PSI 4.7 70 A=CP-25, 50Hz B=CP-25, 60Hz 4.0 60 C=CP-55, 50Hz D=CP-55, 60Hz E=CP-75, 50Hz F=CP-75, 60Hz 3.4 50 2.7 40 D, E 2.0 30 1.3 20 0.7 10 30 Gpm 18.9 37.9 56.8 60.5 94.6 113.6 Lpm FLOW TU-3, 5 &...
- Page 17 Blank page. - 14 - Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 18: 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). - Page 19 On models HX 150 through HX 750 a 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.
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Page 20: 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. - Page 21 Temperature of cooling water supply +55°F (+13°C) +65°F (+18°C) +75°F (+24°C) +85°F (+29°C) HX 75 Minimum Flow Rate Gallons per minute 0.75* Liters per minute 2.8* 11.4 Minimum Pressure D Minimum PSID 1.5* Minimum Bar 0.10* 0.13 0.24 0.55 HX 150 Minimum Flow Rate Gallons per minute 1.0*...
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Page 22: Electrical Requirements
Electrical Requirements The unit construction provides protection against the risk of electric shock by grounding appropriate metal parts. The protection may not function unless the power cord is connected to a properly grounded outlet. It is your responsibility to assure a proper ground connection is provided. - Page 23 To access the connections open the pullbox. - Insert your cable through the conduit. - Locate 3TB and 4TB and connect your cable. - Close the pullbox. HEATER FUSES MAIN FUSES REM COND FUSES LINE VOLTAGE IN REMOTE COND. Note: Pullbox shown with remote condenser option.
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Page 24: Plumbing Requirements
Plumbing Requirements Air-cooled and water-cooled units Before installing the unit to an instrument that previously used facility water as a cooling fluid, flush the instrument several times to remove any rust or scale that has built up. Consult the manufacturer of the instrument for a cleaning fluid recommendation. -
Page 25: Auto Refill
clamped. Avoid running tubing near radiators, hot water pipes, etc. If substantial lengths of tubing are necessary, insulation may be required to prevent loss of cooling capacity. Tubing and insulation are available from Thermo Fisher. Contact our Sales Department for more information (see Preface, After-sale Support). If the unit is "hard plumbed”... -
Page 26: Fluids
Fluids Never use flammable or corrosive fluids with this unit. Do not use automotive antifreeze. Commercial antifreeze contains silicates that can damage the pump seals. Use of automotive antifreeze will void the manufacturer’s warranty. Thermo Fisher recommends using distilled/deionized water with a 0.05 to 0.1 MOhmcm reading. -
Page 27: Water Quality Standards And Recommendations
Water Quality Standards and Recommendations Permissible (PPM) Desirable (PPM) Microbiologicals (algae, bacteria, fungi) Inorganic Chemicals Calcium <40 <0.6 Chloride <250 <25 Copper <1.3 <1.0 Iron <0.3 <0.1 Lead <0.015 Magnesium <12 <0.1 Manganese <0.05 <0.03 Nitrates\Nitrites <10 as N Potassium <20 <... -
Page 28: Filling Requirements
These two recommendations will reduce the electrolytic potential of the water and prevent or reduce the galvanic corrosion observed. Not Recommended, Increasingly Corrosive 15.00 10.00 Operations with Stainless Steel Systems 3.00 Operations with 1.00 Mixed Metals Copper/Brass/ CONSULT MATERIALS ENGINEER Stainless Steel 0.10 0.05... - Page 29 Blank page. - 26 - Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 30: Start Up/Shut Down
Section IV Operation Start Up/Shut Down Before starting, check all electrical and plumbing connections and make sure the recirculating system (the HX, your application, and the recirculation lines) has been properly filled with cooling fluid. Also, make sure the flow control valve is properly set (see Flow Control in this section). -
Page 31: Digital Controller
When the unit is shut off, wait approximately five minutes before restarting. This allows time for the refrigeration pressures to equalize. If the pressures are not allowed to equalize, the compressor will short-cycle (clicking sound) and no cooling will occur. Digital Controller The digital controller controls temperature using a PID (Proportional-Integral- Derivative) algorithm. -
Page 32: Setup Loop
Setup Loop The controller is used to view the unit's configuration, and to set temperature limits and PID parameters. Thermo Fisher recommends that only a qualified technician change the PID values. Values can be changed using the YES and NO keys. Press the NEXT key twice to accept the new value. Select IndC to configure the unit to keep running in the event of a fault, select FLt to configure the unit to shut down. - Page 33 Continued from previous page We recommend only a qualified technician change the PID values. Incorrect PID values will hamper HEAt unit performance. XX.X NEXT ENTER NEXT NEXT ENTER ENTER XX.X NEXT ENTER NEXT NEXT ENTER ENTER XX.X NEXT ENTER NEXT NEXT ENTER ENTER...
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Page 34: 15-Pin Interface
15-Pin Interface A female 15-pin interface connector is located on the rear of the unit. The connector is also a status relay contact and a remote on/off control. The interface allows you to set the high and low temperature limits, and low fluid level, as faults. -
Page 35: Flow Control
Flow Control The RECIRCULATING FLOW CONTROL handle, located on the right-hand side of your unit, is connected to a valve that controls the flow rate of the cooling fluid to the instrument being cooled. When the handle is in the full vertical "+" position, the valve is open and all possible cooling fluid is supplied to the instrument being cooled. -
Page 36: Optional Features
Section VI Optional Features External Pressure Regulator 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. -
Page 37: Particulate Filters
Particulate Filters Particulate filter assemblies attach to the supply side of the recirculation water. Refer to the separate manual attached to the filter assembly. The frequency for cleaning/changing the filter depends on your usage. Should the unit's performance be degraded, check the filter. Filters are available from Thermo Fisher, contact our Customer Service Center. -
Page 38: Service Contracts
Section VII Maintenance Service Contracts Thermo Fisher Scientific offers on-site Service Contracts designed to provide extended life and minimal downtime 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. - Page 39 Blank page. - 36 - Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 40: Configuration
Section VIII Service For personal safety and equipment reliability, only a qualified techni- cian should perform the following procedure. 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 9. -
Page 41: Reservoir Cleaning
Locate the reservoir stirrer motor (units with plate heat exchangers and HX 75s do not have a stirrer motor; HX 500s and HX 750s have two stirrer motors). Disconnect the motor wires at the plug located on the side of the electrical box cover. -
Page 42: Pump Strainer
Pump Strainer Units with PD and TU pumps have pump strainers that require cleaning. If debris is drawn into the recirculating system, the pump strainer will prevent the material from being drawn into the pump and damaging the pump vanes. After initial installation, the strainer may become clogged with debris and scale. -
Page 43: Error Codes
Error Codes The controller also has the capability to display error codes. The codes are: Display Indication Er00 ROM Checksum Er01 RAM Test Fail Er02 Keypad Test Failed Er03 EEPROM Critical Parameters Checksum Er04 EEPROM Noncritical Parameters Checksum Er05 -13 Interrupt Error Er14 Synchronous Error - check connections... -
Page 44: Pump Motor Lubrication
Pump Motor Lubrication Some units with PD pumps require pump motor lubrication. Refer to the name plate label on the rear of the case top to identify the specific pump in your unit. Several companies manufacture motors used to drive the pump. These motors use sleeve type bearings with large oil reservoirs. -
Page 45: High/Low Pressure Cutouts
High/Low Pressure Cutouts All units, except air-cooled HX 75s, have a high pressure cutout. The high pressure switch is a safety device on the discharge side of the compressor. Should the unit's refrigeration discharge pressure become too high the high pressure cutout will activate and shut down the compressor and the controller will display Er52. -
Page 46: Pressure Relief Valve
Pressure Relief Valve (PD and TU Pumps Only) Units with a PD or TU pump have an adjustable pressure relief valve. Refer to the name plate label on the rear of the case top to identify the specific pump in your unit. - Page 47 Blank page. - 44 - Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 48: Troubleshooting
Section IX Troubleshooting Displaying Software Version To display the software version ensure the controller is displaying the reservoir fluid temperature. Depress and hold NO for at least 10 seconds. For example, 0507 displays software version digits to left of decimal. Note, the two leading zeros do not display. -
Page 49: Service Assistance
Unit will not circulate fluid Check the tubing, strainer, and any optional filters/cartridges between the unit and your application for obstructions or for cleaning/replacement. Units with PD and TU type pumps may require pump strainer cleaning. Refer to the name plate label on the rear of the case top to identify the specific pump in your unit. -
Page 50: Refrigeration Flow (Hx-75 And Hx-150)
Section X Diagrams Refrigeration Flow Diagram (HX 75 and HX 150) Capillary Tube Hot Gas Bypass Valve Compressor Solenoid Valve (NC) Evaporator Coil Dryer Reservoir Condenser Refrigeration Flow Diagram (HX 300 through HX 750) Hot gas bypass Accumulator valve Solenoid valve Compressor Solenoid valve (NC) -
Page 51: Pump Flow (Cp Pumps)
Pump Flow Diagram (CP Pumps) Flow transducer (Optional) Reservoir Check valve Pump Flow control valve Pressure gauge Outlet Inlet Pump Flow Diagram (PD and TU Pumps) Flow transducer (Optional) Reservoir Relief valve Check valve 1 2 3 1 2 3 1 2 3 1 2 3 Pump Strainer... -
Page 52: Dimensions
Dimensions The pullbox comes in two sizes. On HX 300s, 500s and 750s the box is 12" x 16" x 4" (H x W x D) and is located on the rear of the unit. For all others it is 6" x 6" x 4" (H x W x D) and is located on the left side. -
Page 53: Wetted Materials
Section XI Wetted Materials Fluid Path Plumbing CP Pumps 1 Stainless Steel 1 Stainless Steel 2 Brass 2 Buna N 3 Copper 3 Graphite 4 Nylon 4 Ceramic 5 Bronz 6 Silver TU Pumps 7 Antimony 1 Bronze 8 Nickle 2 Monel 9 EPDM 3 Graphite... - Page 54 Thermo Scientific Product Repair Depot within the warranty period. The expense of returning the unit to the authorized Thermo Scientific Product Repair Depot for warranty service will be paid for by the buyer. Our responsibility in respect to warranty claims is limited to performing the required repairs or replacements, and no claim of breach of warranty shall be cause for cancellation or recision of the contract of sales of any unit.
- Page 55 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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