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Matec CHDF 2000 Hardware Manual

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Matec CHDF 2000 Hardware Manual

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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: Table Of Contents

    Table of Contents Frequently Asked Questions Chapter 1: Introduction to the CHDF 2000 CHDF 2000 Components CHDF 2000 Operation I-10 Using the Control Panel I-11 Chapter 2: Theory and Sample Preparation Scope II-1 Safety Precautions II-1 Intended Use II-2 Description and Specifications...
  • Page 3 Chapter 4 Operating the CHDF 2000 Priming the Pump IV-1 Analyzing Samples IV-4 Chapter 5 Troubleshooting the CHDF 2000 Responding to Error Messages Quick Troubleshooting Checklists Running CHDF 2000 Diagnostics Chapter 6 Maintaining the CHDF 2000 Maintaining the Pump VI-2...
  • Page 4 Matec Applied Sciences CHDF 2000 Hardware Users Guide Version 3.8 April 26, 2006 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 5 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 6: Frequently Asked Questions

    Whatman de-gassing filter on the pump-inlet tubing should be replaced. This filter lasts about one month. Cavitation, which results in air bubble generation, occurs if the Whatman filter needs Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 7 These molecules have a smaller size than the particles themselves, and therefore exit the capillary after the particles. 15. A broad peak after the marker peak is displayed in the Raw Data. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 8 Calibration standards can be run prior to regular sample analysis in order to confirm calibration accuracy. These “control” standards may be added to the calibration curve if re-calibration is deemed necessary. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 9 1.41*Dp (instead of 1.5*Dp). Triplets appear to produce one diameter times the square root of 3. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 10 You can subtract the CD values at both ends of each peak. This gives you the percentage of this peak. See example graph below. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 11 34. How can the percentage of a particle-size population be calculated? See “Particle Frequency” question above. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 12: Chapter 1: Introduction To The Chdf 2000

    1 Introduction to the CHDF 2000 The CHDF 2000 (Figure 1-1) uses the principle of Capillary Hydrodynamic Fractionation (CHDF) to measure particle sizes from 15 nanometers to 1.1 microns in diameter. Control panel Front door Figure 1-1 CHDF 2000 The CHDF 2000 provides the following features •...

  • Page 13: Chdf 2000 Components

    The CHDF 2000 control panel (Figure 1-2) provides a simple icon-based interface that allows you to directly configure, operate, and troubleshoot the CHDF 2000 . The control panel is located on the CHDF 2000 front door. Refer to Section 1.3, Using the Control Panel, for detailed instructions on using the CHDF 2000 control panel.
  • Page 14 I-11 Manual Injector Valve The CHDF 2000 manual injector valve (see Figure 1-2) provides a port for loading a sample and a manual rotation handle to inject the sample into the eluant stream for analysis. The injector valve is mounted to the right of the front door.
  • Page 15 D etec to r Figure 1-4 Absorbance Detector Computer Connection A 9 pin, RS-232 connection is used to provide data transfer between the CHDF 2000 and a personal computer. A Pentium™ processor and Windows ‘95™ are recommended for the personal computer.

  • Page 16: Chdf 2000 Operation

    I-13 1.2 CHDF 2000 Operation 1.2.1 Operation Figure 1-6 is a fluidic diagram illustrating CHDF 2000 operation. Tubing ID Legend 0.009 SS 0.020 SS 0.040 SS 0.062 TFE Optics bench Pump A Eluant Pump A Reservoir solvent reservoir Unions Whatman...

  • Page 17: Using The Control Panel

    I-14 1.3 Using the Control Panel The CHDF 2000 control panel provides easy control of system configuration, operation, and diagnostic functions. The control panel components (Figure 1-7) include: • Control panel display • System controls Control panel display Keypad Function keys Selector knob Figure 1-7 Control Panel Components.
  • Page 18 I-15 1.3.1 Control Panel Display The CHDF 2000 control panel display consists of four sections (Figure 1.8) Screen Name Screen Body Secondary Options Figure 1-8 Control Panel Display Sections Screen name – A screen name appears at the top of each screen to identify the specific program screen.
  • Page 19 I-16 1.3.2 System Controls System controls are just below the control panel display on the CHDF 2000 front door. Table 1-1 identifies the function of each CHDF 2000 control. Table 1-1 Control Panel Control Function Description 0 – 9 Number values Used in combination to insert a value for a selected parameter.
  • Page 20 1. Choose the parameter you wish to change. 2. Enter the desired value using the keypad. 3. Press OK to accept the displayed value. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 21: Scope

    2.2 SAFETY PRECAUTIONS 2.2.1 Electrical The pump and the detector in the CHDF 2000 use high voltage. Avoid contact with any high voltage area. Un-plug the entire CHDF 2000 before performing service or maintenance. Do not store or spill eluant or samples on the electrical modules. Be certain that all laboratory power receptacles are properly grounded.

  • Page 22: Intended Use

    II-2 2.2.3 Chemical The GR-500 eluant for use in the CHDF 2000 consists of surface active agents in deionized water and to our knowledge poses no chemical danger. There are currently three versions of the GR500 eluant: 1X- GR500, 2X-GR500 (standard), and 2X-GR500-LA. Never use any eluants besides those supplied by Matec Applied Sciences.

  • Page 23: Description And Specifications

    II-3 2.4 DESCRIPTION AND SPECIFICATIONS The CHDF 2000 achieves the separation of particles using a several different fractionation cartridges. These are illustrated below in Figure 2.1. Top Cartridge Bottom Cartridge Filter Pump, Valves, and Plumbing After the sample is injected, the flowing eluant carries a small portion of it into the top cartridge. The particle size separation takes place in the top cartridge.
  • Page 24 If your computer does not meet these specifications do not install the software. Upgrade your computer, or find a computer that meets or exceeds the specifications given above. 2.4.2 CHDF 2000 UV Detector Specifications _____________________________________________________________________________ 1. Spectral bandwidth: 7 nm _____________________________________________________________________________ ±2.0 nm...
  • Page 25 Flow stability: ________________________________________________________________________ 2.4.4 CHDF 2000 OPERATING SPECIFICATIONS The operating specifications of the CHDF 2000 are: 1. Particle size measurement range: The size range of the standard C-202 Cartridge and the 2XGR-500 eluant is 15 nm to 1100 nm particle diameter. A 15 nm to 700 nm high-resolution range is available (C-201). A high-sensitivity cartridge for measurement of non-UV-absorbing materials is available (C-203).
  • Page 26 The CHDF GR-500 eluant consists of proprietary surface active agents in deionized water supplied by Matec Applied Sciences in concentrated form. Three types of GR-500 eluant are available: 1X-GR500, 2X-GR500, and 2X-GR500-LA. The 2X-GR500 is the standard eluant used for regular submicron particle size analysis.

  • Page 27: Theory Of Operation

    II-7 12. Calibration: The CHDF 2000 is factory pre-calibrated. Each fractionation cartridge is provided with a floppy disk. The floppy disk contains calibration curve files. The eluant flow rate and type at which the cartridge must be operated are indicated on the floppy disk label, a typical flow rate is 1.4 ml/min. Periodic field recalibration can be performed by the user directly through the CHDF software.

  • Page 28: Data Analysis

    2.7 SAMPLE PREPARATION The CHDF 2000 requires 1 milliliter of sample at 0.1-5 volume %. The sample must be aqueous based. The sample can be prepared in either of two ways; dilution of a concentrate or the addition of the disperse phase to the eluant.

  • Page 29: Eluant

    The CHDF 2000 requires that the sample be injected by syringe through an injection valve, or the sample may be injected using an autosampler. In many cases it is necessary to filter the sample before injection to remove coagulum or outsize particles.

  • Page 30: Chapter 3 Setting Up The Chdf 2000

    Chapter 3 Setting Up the CHDF 2000 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 31 • Review and edit operating parameters 3.1 Performing Power-On Procedures Caution: To prevent injury, apply power to the CHDF 2000 only after you have completed all installation tasks properly. When you first power-on the CHDF 2000, perform the following procedures: •...
  • Page 32 3.1.2 Checking Power-On Diagnostics When you power-on the CHDF 2000, the system automatically executes a set of diagnostics to verify that the system is ready for operation. The results of the power-on diagnostics appear in the Power-On Diagnostics screen (Figure 3-2).
  • Page 33 3.1.4 Moving to the Home Screen You can initiate all CHDF 2000 control functions from the Home screen. From the Power-On Diagnostics screen (see Figure 3-2), press the selector knob to choose Continue. The Home screen appears (Figure 3-3). Figure 3-3 The Home Screen You are now ready to set up the CHDF 2000 for normal operation.
  • Page 34 Flow Rate from the menu in Figure 3.4, when the menu in Figure 3.5 appears, only the flow rate parameter can be changed. All other choices are disabled. Select Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 35 The recommended value is 220 nm. Calibrate pH - Select this option when you need to calibrate the pH sensor on the CHDF 2000. You will need three buffer solutions, typically of pH 4.0, 7.0, and 10.0 to calibrate the pH sensor.
  • Page 36 3.2.1 Changing Operating Parameters To review and edit the system parameter values of the CHDF 2000 choose Configure system from the Home Screen. The first of three Configure System screens appears (Figure 3.8). Figure 3-8 First Configure System Screen Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476...
  • Page 37 Set Cell K - This parameter is used to calibrate the conductivity sensor that is onboard the CHDF 2000. When this command is selected, the display changes to “Cell K:”. Rotate the selector knob to the correct value, then push the knob to enter the value. The selected value should be in the range 0.8 to 2.0.
  • Page 38 Once this parameter is selected, the display changes to “Standby:”. Rotate the selector knob to the desired value, then push the knob to enter the value. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 39 Y Scale - Sets the maximum absorbance reading that can be displayed on the CHDF 2000 front panel raw data graph during a fractionation. When selected, the display changes to “Y Axis AU Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476...
  • Page 40 A value of 5 is recommended. Next Screen - In this instance, selecting Next screen takes you back to the first Configure System screen. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 41: Chapter 4 Operating The Chdf 2000

    Chapter 4 Operating the CHDF 2000 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 42: Priming The Pump

    4 Operating the CHDF 2000 This chapter describes how to perform normal CHDF 2000 operations. 4.1 Priming the Pump Prime the pump to remove air bubbles from the eluant supply tubes or to purge eluant from the system before you use new eluant.
  • Page 43 • Air bubbles disappear from the eluant inlet tubing to the pump. • The syringe draws steady fluid from the valve. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 44: Analyzing Samples

    6. Start pump (screen step 6) – Choose Press to Start. The Pump draws eluant from the reservoir and pump it through the system. 7. Monitor the CHDF 2000 waste tubing until air bubbles disappear from the eluant, or the pump stops.
  • Page 45 Select Stop Pump or Home Screen to end your session. 8. Review your results. If they are satisfactory, you are ready to analyze the next sample. If the results are not satisfactory, refer to Chapter 5, Troubleshooting the CHDF 2000, to locate the source of the problem.
  • Page 46 You set the time interval by defining the value of the Lamp Standby Delay operating parameter. Refer to Chapter 3, Reviewing and Editing System Parameters, for more information. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 47 Exiting from Standby Mode To exit from Standby mode, choose Home screen. The lamp turns on, the detector recalibrates, and the Home screen reappears. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 48: Chapter 5 Troubleshooting The Chdf 2000

    Chapter 5 Troubleshooting the CHDF 2000 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 49 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 50: Responding To Error Messages

    Use troubleshooting checklists to quickly identify potential sources of system problems • Run CHDF 2000 diagnostics 5.1 Responding to Error Messages During operation of the CHDF 2000, conditions may occur that cause error messages to appear on the control panel display. The error messages are: • High pressure limit exceeded •...
  • Page 51 To backflush the cartridge, open up the front door of the CHDF 2000. There is a panel on the right hand side held in place with two screws. Remove these screws (they should come out by hand), and you should see the following.
  • Page 52 Figure 5-3 Power Lost Error Message Recommended response This message occurs when the CHDF 2000 temporarily loses power due to a power outage or inadvertent powering-off of the system during sample analysis. Before you resume sample analysis: 1.

  • Page 53: Quick Troubleshooting Checklists

    Power company restore line voltage. Power supply fuse blown Replace fuse. Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 54 Column heater not Connect column heater. Instructions connected supplied with Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 55 Time varies based on wavelength and sensitivity. Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 56 UV detector flow cell Check flow cell, tighten Section 6.4 leaking connections. Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 57: Running Chdf 2000 Diagnostics

    The parameters are described and set as follows: Test Start in Sig. - This displays the voltage signal sent by the CHDF 2000 to a computer so the computer knows when samples have been injected and loaded. When selected, the displays changes to “Inject:”...
  • Page 58 Changes may indicate that the detector cell windows are becoming dirty, or that the lamp strength is deteriorating. 5.3.2 Initiating and Interpreting Diagnostics The CHDF 2000 diagnostics are explained in more detail in the following sections Test START IN Signal Diagnostic The Test START IN Signal diagnostic provides two functions: •...
  • Page 59 SMP – The level of lamp energy measured by the sample photodiode. Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 60 3. Press the selector knob to return to the Run Diagnostics screen. Matec Applied Sciences 56 Hudson St., Northborough MA 01532 Ph: (508) 393-0155x321 Fax: (508) 393-5476 e:dosramos@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 61: Chapter 6 Maintaining The Chdf 2000

    Chapter 6 Maintaining the CHDF 2000 Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 62: Maintaining The Pump

    6 Maintaining the CHDF 2000 This chapter provides procedures for maintaining the CHDF 2000. 6.1 Maintaining the Pump Figure 6-1 identifies the major components of a CHDF 2000 eluant pump. Tee Connector Outlet check valve assembly Piston Left Pump Indicator Rod...
  • Page 63 9. Remove the inlet tube from the inlet check valve (see Figure 6-1). 10. Using a 5/32-inch Allen wrench, remove the two pump-head-assembly mounting bolts (Figure 6-2). Figure 6-2 Unscrewing the Pump Head Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 64 14. Reconnect the eluant lines. 15. Return the eluant reservoir to its normal position. 16. Prime the pump, as described in Section 4.2, Priming the Pumps. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 65 4. Use the Prime Pump function to turn on the pump (refer to Section 4.2, Priming the Pumps). 5. Run the pump until the plunger is fully extended, then turn off the pump. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 66 If the plunger is not scratched or otherwise damaged, reassemble the plunger. If the pump was leaking, install new pump seals. If the plunger is damaged, replace the plunger and the seals. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 67 Loosen the pump head and repeat steps 6 and 9. 10. Reconnect the eluant lines, reposition the eluant reservoir, and prime the pump (see Section 4.2, Priming the Pumps). Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 68 10 minutes in methanol. If a check valve does not work properly after cleaning, replace the valve. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 69 Set aside the outlet check valve in a safe place, ensuring that it stays upside down (to prevent the internal parts from falling out). Figure 6-8 Removing the Outlet Check Valve Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 70 8. Inspect the in-line filter for leaks. Tighten 1/4 turn (if necessary). 9. Precondition the in-line filter by running methanol through it at 1.0 mL/min for approximately 15 minutes. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 71: Maintaining The Manual Injector Valve

    6-11 6.2 Maintaining the Manual Injector Valve Figure 6-10 identifies the major components of the CHDF 2000 manual injector valve. Handle screw Handle Knob Set screws (2) Needle guide Pressure adjusting screw Body Thrust bearing Spring washers (4) Rotor pin Position sensing switch 60°...
  • Page 72 Flat-blade screwdriver • 9/64-inch Allen wrench • 5/16-inch open-end wrench Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 73 To remove the rotor seal: 1. Turn off instrument power and disconnect the power cord. 2. Remove the CHDF 2000 top front cover. 3. Leave the injector attached to the front panel of the system, and leave the knob on.
  • Page 74 Note: The needle seal holds only a few bars of pressure, and does not completely prevent syringe discharge when the injector handle is in the halfway position. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...

  • Page 75: Maintaining The Priming Valves

    12. Use the Prime Pumps option to run the pump for a few minutes to purge the valve. 13. Close the valve firmly to seat the tip seal. 14. Run the pump and check for leaks around the priming valve. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 76: Maintaining The Detector

    The lamp timer is a mercury column with a scale of 0 to 10 where 10 represents 1000 hours. As the lamp ages, the bubble in the mercury column moves toward the 10. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 77 4. Remove the lamp housing by sliding it up and away from the unit. 5. Disconnect the lamp connector from the lamp interlock cable (Figure 6-14). Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 78 6. From the top of the lamp assembly, remove the center adjustment screw along with the star washer and the hex nut. Place the lamp assembly on a flat surface with the bulb positioned upward (Figure 6-16). Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 79 Large cut-out Springed-shoulder screws Lamp aperture Lamp connector Notch Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 80 7. Plug the lamp connector into the lamp power cable assembly (see Figure 6-14). 8. Replace the protective shield to prevent direct access to the lamp when instrument power is Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 81 Figure 6-18 Adjusting for Maximum Lamp Energy To maximize lamp energy (see Figure 6-18): 1. Turn on power for the CHDF 2000. The Power-On Diagnostics screen appears (see Figure 3-2). Caution: To prevent the possibility of exposing your eyes to ultraviolet radiation, wear eye protection that filters ultraviolet light and keep the lamp in the lamp housing during operation.
  • Page 82 7. Observe the displayed REF value while you rotate the lamp adjustment plate to maximize the REF value. 8. Turn off power to the CHDF 2000. 9. Wait five seconds, then restart this procedure from step 1. 10. Rotate the selector knob to set the wavelength (AU) to 656 (nm).

  • Page 83: Adjusting The Control Panel Display

    Contrast adjustment screw (see Error! Reference source not found.). 6. Reinstall the access cover and tighten the retaining screws. Be careful not to damage the control panel ribbon cable or ground wire. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...

  • Page 84: Dealing With Plugged Cartridges

    SS tube, leaving the capillary exposed, then snip the capillary. See Fig. 6.20. Details are shown below. 1. Stop the pump on the CHDF 2000, wait for the pump pressure to drop below 1,000 psi. 2. Open the front door of the instrument. The cartridge is located in the center top position, and is shown in Figure 6.20.
  • Page 85 If the snipping procedure described in the above section does not solve your problem, the fractionation cartridge on the CHDF 2000 will need to be replaced. Once a new cartridge is purchased from Matec, it is a relatively simple procedure to install it. The cartridge is located behind the front door of the instrument, in the center, top position.
  • Page 86 6. Replace the cartridge using the 3 screws provided. 7. Reconnect the cartridge tubing to the instrument. Do not over-tighten the fittings. Tighten ¼ turn past finger-tight. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com e-mail: colloid@matec.com...
  • Page 87 7. Cleaning the filter may also be performed by backflushing, as described in section 5.1.1. 8. If cleaning the filter element fails, you can replace the filter element with a new unit. Matec Applied Sciences 56 Hudson St., Northborough, MA 01532 Ph: (508) 393-0155 Fax: (508) 393-5476 www.matec.com...
  • Page 88 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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