Hach LACHAT QuickChem 8500 2 Series User Manual
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Hach LACHAT QuickChem 8500 2 Series User Manual

Hach LACHAT QuickChem 8500 2 Series User Manual

Fia automated ion analyzer
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Catalog Number DOC026.53.00808
®
QuikChem
8500 Series 2
FIA Automated Ion Analyzer
USER MANUAL
June 2008, Edition 4
© HACH Company, 2004, 2007, 2008. All rights reserved. Printed in the U.S.A

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  • Page 1 All manuals and user guides at all-guides.com Catalog Number DOC026.53.00808 ® QuikChem 8500 Series 2 FIA Automated Ion Analyzer USER MANUAL June 2008, Edition 4 © HACH Company, 2004, 2007, 2008. All rights reserved. Printed in the U.S.A...
  • Page 2 All manuals and user guides at all-guides.com...

  • Page 3: Table Of Contents

    All manuals and user guides at all-guides.com Table of Contents Section 1 Specifications ........................5 1.1 Bench requirements........................5 1.2 Module dimensions ........................6 1.3 Electrical and environmental specifications ................. 6 Section 2 General Information ......................9 2.1 Safety information ........................9 2.1.1 Use of hazard information....................
  • Page 4 All manuals and user guides at all-guides.com Table of Contents 4.8 Inert probe ..........................45 4.9 Pump operation ..........................46 4.9.1 Reagent pump shutdown procedure .................47 4.9.2 Reagent pump maintenance .....................47 4.10 Temperature controller ......................47 4.11 Dilutor setup ..........................47 4.12 Dye test standards ........................48 4.12.1 Mix dye standards ......................48 4.13 Calibration run ..........................49 Section 5 Maintenance...
  • Page 5 All manuals and user guides at all-guides.com Table of Contents 6.6 Injection valve troubleshooting....................75 6.7 Detector fault..........................75 6.8 Flow cell leaks..........................75 6.9 Sampler troubleshooting ......................75 6.9.1 Sampler errors ........................75 6.10 Dilutor............................76 6.11 Pump test..........................76 6.12 Dye test............................
  • Page 6 All manuals and user guides at all-guides.com Table of Contents...

  • Page 7: Section 1 Specifications

    Section 1 Specifications All manuals and user guides at all-guides.com Specifications are subject to change without notice. 1.1 Bench requirements Ideally, the modules are configured in the following left-to-right order: computer (with peripherals), sampler, PDS200 Dilutor, reagent pump and system unit (refer to Figure Note: The sampler and dilutor can be placed on top of the optional shelf accessory in order to conserve bench space.

  • Page 8: Module Dimensions

    All manuals and user guides at all-guides.com Specifications 1.2 Module dimensions Table 1 contains the general dimensions for individual modules. Use Table 1 for any system configuration that differs from the one explained above. Table 1 Dimensions Module Width (cm) Depth (cm) Height (cm) Weight (kg)
  • Page 9 All manuals and user guides at all-guides.com Specifications Table 2 Individual electrical specifications Maximum active power (W), AC input voltage AC input frequency apparent power Module Fuse rating rating or range rating or range (VA) or current rating PDS200 110–240 VAC 50–60 Hz 0.5 A T, ½...
  • Page 10 All manuals and user guides at all-guides.com Specifications...

  • Page 11: Section 2 General Information

    Section 2 General Information All manuals and user guides at all-guides.com 2.1 Safety information Read this entire manual before unpacking, setting up or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.

  • Page 12: General Product Information

    All manuals and user guides at all-guides.com General Information 2.2 General product information The system unit manages five sample processing modules or channels, configured for performing flow injection analysis with photometric detection. The number of channels can be expanded to a maximum of eight by adding a second core. Alternate configurations, such as potentiometric and amperometric detection methods are described in the analytical method where they are required.

  • Page 13: Section 3 Installation

    Section 3 Installation All manuals and user guides at all-guides.com DANGER Only qualified personnel should conduct the tasks described in this section of the manual. 3.1 System unit installation 3.1.1 Carrying instructions CAUTION Potential Lifting Hazard. A five-channel system weighs 47 kg (103 lb). Do not unpack, carry or move the system without proper equipment or sufficient number of people.

  • Page 14: Flow Cell Installation

    All manuals and user guides at all-guides.com Installation Figure 4 System unit connection On/Off switch Pump connectors Power for system unit USB in (from computer) High pressure pump (IC only) 3.1.4 Flow cell installation To install the flow cell: 1. Insert the flow cell into the detector with the printed side (bottom) down. Since the flow cell is keyed, insert the flow cell only in the corresponding slot of the detector (Figure 2.

  • Page 15: Waste And Sample Line Installation

    All manuals and user guides at all-guides.com Installation Figure 6 Flow cell connectors To waste Inlet (from manifold) 3.1.5 Waste and sample line installation 3.1.5.1 Sample line ® A sample line consists of a union connector, 130 or 190 cm of Teflon tubing 0.8 mm (0.032 in.) ID, two pump tube adapters, a green-green pump tube with its ends trimmed to 2 cm past both green tabs and 30 cm of Teflon tubing 0.8 mm (0.032 in.) ID.
  • Page 16 All manuals and user guides at all-guides.com Installation 3.1.5.2 Waste line A waste line consists of a 13 cm of Teflon tubing 0.8 mm ID, a pump tube adapter, 150 cm of Tygon tubing 1.5 mm ID, a glass weight and a plastic nipple. Refer to Figure Figure 9 Waste line 13 cm Teflon 0.8 mm ID...

  • Page 17: Manifold Installation

    All manuals and user guides at all-guides.com Installation Figure 10 Flow injection connections System unit Waste lines Channel 1 Waste container Channel 2 Waste line Channel 3 Sample line 3. Place the glass weight end of the waste line in a proper waste container. Never submerge the waste line in the waste solution because this may cause back pressure and flow restrictions.

  • Page 18: Data System Installation

    All manuals and user guides at all-guides.com Installation Figure 11 Flow injection analysis Sample line From manifold outlet Sample loop Manifold configuration varies To manifold inlet Carrier line To waste Waste or next valve Interference filter 3.1.7 Data system installation Follow the manufacturer’s instructions for the setup of the computer, keyboard, monitor and mouse.
  • Page 19 All manuals and user guides at all-guides.com Installation Figure 12 Power cord connection Power cord Main supply socket 4. Connect the analog cable to the back of the pump (Figure 13). Figure 13 Analog cable connection 5. Connect the other side of the analog cable to the left panel of the QuikChem System Unit.

  • Page 20: Apply Power To The Pump

    All manuals and user guides at all-guides.com Installation 3.2.2 Apply power to the pump To apply power to the pump: 1. Turn on the power strip, then turn on the power switch on the back of the pump (Figure 14). In an RP-150 Model pump, the top panel will show the set speed of 35. Figure 14 Power switch location Power switch 3.2.3 Pump tubing installation...
  • Page 21 All manuals and user guides at all-guides.com Installation 2. Place the pump tubing on the cartridges (Figure 16). Make sure that the tabs lock into the adaptor. Figure 16 Placement of pump tubing on the cartridges Tension lever To injection valve or Pump tube cartridge Pump tube Adapter...

  • Page 22: Reagent Pump Initial Test

    All manuals and user guides at all-guides.com Installation 5. Move the tension lever to the left until it clicks into place (Figure 18). Make sure the tension lever is in the 12 o'clock position. Note: Move the lever to the right to remove tension. 6.

  • Page 23: Sampler Installation

    All manuals and user guides at all-guides.com Installation 3.3 Sampler installation 3.3.1 Sampler type The QuikChem 8500 Series 2 can be used with either the ASX-500 Series Sampler or the ASX-400 Series Sampler (Figure 19). Installation is the same for both samplers. Figure 19 Autosamplers ASX-500 Autosampler ASX-400 Autosampler...

  • Page 24: Sampler Setup

    All manuals and user guides at all-guides.com Installation 3.3.3 Sampler setup To connect the sampler: 1. Connect the power cord to the power strip. Leave the power strip switched off. 2. Connect the supplied RS232C cable to the 9-pin connector (COM1) on the back of the sampler.
  • Page 25 All manuals and user guides at all-guides.com Installation Figure 20 Probe tube assembly Sample transfer tubing Slider block guide rail Sipper assembly tube Home position flag Z-drive assembly Sample probe guide plate Thumbscrews with bushings 10 Z-axis slider X-axis block 11 O-ring Y-axis lead screw...

  • Page 26: Fluidic Connections

    All manuals and user guides at all-guides.com Installation 3.3.6 Fluidic connections 3.3.6.1 Connect the rinse station Rinse solution is pumped into the bottom of the rinse station and drains to a waste container through drain tubing attached at the top of the station (Figure 21).

  • Page 27: Connect The Sampler To A Pds200 Dilutor

    All manuals and user guides at all-guides.com Installation 3.3.7 Connect the sampler to a PDS200 dilutor Systems that use a PDS200 dilutor require the ASX-500 Series Sampler and a dual probe. Refer to section 3.4 for installation instructions. 3.4 Dilutor installation The PDS200 uses positive displacement to draw deionized water or other diluent to mix with non-flammable samples for analysis.

  • Page 28: Pds200 Connections

    All manuals and user guides at all-guides.com Installation 3.4.2 PDS200 connections Note: Probe speed on existing autosamplers has been reduced to improve performance. The autosampler may produce a different sound as a result. To connect the PDS200: 1. Connect the DI Water Line to Port A of the solenoid valve of the dilutor. Place the other end of the line into the DI water (Figure 23).
  • Page 29 All manuals and user guides at all-guides.com Installation Figure 24 Dilutor and solenoid valve fluidic connections To sample probe Dilutor power connection To diluent Dilutor power supply Dual probe assembly Sampler power supply Dilutor/sampler serial cable 10 To pump/analyzer Sampler/computer connection 11 DI water line Sampler power connection 12 Diluent line filter assembly...
  • Page 30 All manuals and user guides at all-guides.com Installation...

  • Page 31: Section 4 Operation

    Section 4 Operation All manuals and user guides at all-guides.com ® The QuikChem System automates wet chemical determinations using the principle of Flow Injection Analysis. The peristaltic reagent pump draws the sample from the sampler into the injection valve. Simultaneously, reagents are continuously pumped through the system.

  • Page 32: Inject State

    All manuals and user guides at all-guides.com Operation The injection valve has two states: the inject state and the load state. The valve will be moving bi-directionally between those two states. When the system is not in operation, the valves rest in the inject state. 4.1.1 Inject state When the valve is in the inject state, the carrier stream is pumped into port 2 and directed to port 1 to flow through the sample loop.

  • Page 33: Load State

    All manuals and user guides at all-guides.com Operation 4.1.2 Load state During the load state, the sample loop is being filled with sample. When the valve switches back to the inject state, the sample flowing through the sample loop is trapped momentarily.

  • Page 34: Manifold Diagram

    All manuals and user guides at all-guides.com Operation 4.2 Manifold diagram A manifold is the reaction module where the chemistry occurs. This section explains how to read a manifold diagram. Each QuikChem Method contains a manifold diagram (Figure 28). The manifold diagrams depict reagent flow rather than the manifold layout.

  • Page 35: Manifold Symbols

    All manuals and user guides at all-guides.com Operation 4.2.1 Manifold symbols 4.2.1.1 Mixing coil symbol Mixing coils are typically constructed with 0.8 mm ID Teflon tubing wrapped on a coil support. The mixing coil symbol (Figure 29) may also represent a back pressure loop. Read the notes regarding mixing coils in the QuikChem methods.
  • Page 36 All manuals and user guides at all-guides.com Operation Table 6 Coil support tubing lengths Coil support (inches) Tubing (cm) Alternating The alternating coil support has 6 holes. When wrapping the tubing on the coil support, change the tubing direction (to the right or left) every time the tubing is passed through a hole.
  • Page 37 All manuals and user guides at all-guides.com Operation 4.2.1.4 Pump and pump flow symbols Figure 32 represents the reagent pump. The top arrow indicates the pump flow direction. The other two upper lines refer to the rinse water lines attached to the wash reservoir in the sampler.
  • Page 38 All manuals and user guides at all-guides.com Operation The reagent lines are labeled to indicate the solution going through that line. The carrier line is always connected to port 2 of the valve. The sample line is always connected to port 6 of the valve.

  • Page 39: Fluidic Connections

    All manuals and user guides at all-guides.com Operation 4.3 Fluidic connections 4.3.1 Flow fit connections Tee connectors, union connectors and pump tube adapters are all examples of flow fit connections. Tube connectors used on tee connectors, union connectors and pump tube ®...

  • Page 40: Flared Tubing Connections/Switching Valve Connections

    All manuals and user guides at all-guides.com Operation 4.3.2 Flared tubing connections/switching valve connections The switching valve is a manual valve designed to direct the flow in the manifold. Some manifolds that include a column (e.g., cadmium column for nitrate reduction) may have this type of valve.

  • Page 41: Pump Tube Connections

    All manuals and user guides at all-guides.com Operation 4. Place the flow cell into the lower slot of the detector (Figure 44 on page 43). Press firmly until it snaps into place. Note: The flow cell is keyed so it can only be inserted one way. 5.
  • Page 42 All manuals and user guides at all-guides.com Operation 4. Insert the pump tube adapter into the pump tube. Slide the pump tube as far as it can go. 5. Screw the collar on the pump tube adapter. Table 7 Pump tube colors Collar Pump tube color White...

  • Page 43: Transmission Lines Connections

    All manuals and user guides at all-guides.com Operation 4.3.5 Transmission lines connections Depending on the inner diameter of the Tygon tubing, two pieces of tubing can be connected by a metal or a plastic nipple. The metal nipple is used for small inner diameter tubing.

  • Page 44: Non-Photometric Detectors

    All manuals and user guides at all-guides.com Operation Once the instrument is powered up: 1. Determine if the analysis to be performed requires a special detector. Most QuikChem methods require a photometric detector module (Figure 44 on page 43). Note: The Ion Chromatography (IC) channel (optional) uses a conductivity module instead of a photometric detector module.
  • Page 45 All manuals and user guides at all-guides.com Operation 5. Determine whether the manifold is for a heated chemistry. A heated chemistry manifold board will have a hole to route the tubing from the heater to the manifold. For heated chemistries, locate the union connector that holds the two ends of the tubing needed for the method.

  • Page 46: Injection Valve Connections

    All manuals and user guides at all-guides.com Operation 4.7.1 Injection valve connections PORTS 1 AND 4—The tubing that connects these two ports is called the sample loop. The length of the sample loop is specified in the method. Use 0.8 mm ID Teflon tubing for the sample loop unless the QuikChem method specifies otherwise.

  • Page 47: Inert Probe

    All manuals and user guides at all-guides.com Operation All Teflon tubing is 0.8 mm ID. The 130 cm piece of Teflon tubing is connected to the probe on the sampler. Connect the 20 cm piece of tubing to port 6 of the valve. Figure 46 Tubing length requirements Sample loop (per QuikChem method) 15 cm...

  • Page 48: Pump Operation

    All manuals and user guides at all-guides.com Operation 4.9 Pump operation To use new pump tubes for the first time, allow the pump to run approximately ten minutes in order to obtain constant flow rates. Table 8 shows the functions of each button on the pump.

  • Page 49: Reagent Pump Shutdown Procedure

    All manuals and user guides at all-guides.com Operation 4.9.1 Reagent pump shutdown procedure To shutdown the RP-150 reagent pump: 1. Press the button to stop the pump. Turn off the green power MANUAL RUN/ STOP switch or turn off the power strip. 2.

  • Page 50: Dye Test Standards

    All manuals and user guides at all-guides.com Operation 4.12 Dye test standards To evaluate the operation of the system, run tests with the Universal Dye instead of reagents. This technique is helpful in troubleshooting problems that are not related to the reagents.

  • Page 51: Calibration Run

    All manuals and user guides at all-guides.com Operation 4.13 Calibration run Once the installation of the manifold is complete, refer to the Omnion 3.0 Software User Manual for the calibration run details. Figure 47 System operation...
  • Page 52 All manuals and user guides at all-guides.com Operation...

  • Page 53: Section 5 Maintenance

    Section 5 Maintenance All manuals and user guides at all-guides.com DANGER Only qualified personnel should conduct the tasks described in this section of the manual. Preventive maintenance is extremely important for long-term operation. The following tips ® will help keep the QuikChem 8500 Series 2 operation at maximum potential.

  • Page 54: System Shutdown Procedure

    All manuals and user guides at all-guides.com Maintenance Table 11 Maintenance schedule (continued) Every 6 Component Service Daily Weekly Monthly Yearly months System unit Keep dry and clean Computer Clean hard drive 5.2 System shutdown procedure To shutdown the system: 1.

  • Page 55: Heater Assembly Installation And Removal

    All manuals and user guides at all-guides.com Maintenance 10. Carefully wrap transmission lines around the manifold. Store the manifold in the supplied plastic bubble bag. 11. To install another manifold, refer to section 3.1.6 on page Heater assembly installation and removal DANGER Potential Electrocution Hazard.

  • Page 56: Heater Assembly Removal

    All manuals and user guides at all-guides.com Maintenance Figure 48 Heater assembly connection Heater controller Leak detector cable with 3-pin connector Leak detector Heater element cable with 2-pin connector Thermocouple plug and jack Heater controller cable with 6-pin connector PE ground cable 5.4.2 Heater assembly removal Refer to Figure 49 on page...

  • Page 57: Wrap A Heater Mandrel

    All manuals and user guides at all-guides.com Maintenance Figure 49 Heater mandrel removal Channel cover/manifold plate Heater element Thermocouple plug Leak sensor Mandrel Thermocouple jack Drip tray Wrap a heater mandrel WARNING Potential Fire Hazard. Use only exact replacement heater wrap tubing and tape or insulation specified by the manufacturer.

  • Page 58: Dilutor Maintenance

    All manuals and user guides at all-guides.com Maintenance 4. Leave a 30-cm length of the replacement tubing that extends beyond the end of the mandrel core and secure the tubing with high-temperature tape. Note: The length of tubing is specified in the QuikChem method. 5.

  • Page 59: Rinse Station Tubing Replacement

    All manuals and user guides at all-guides.com Maintenance 5.7.2 Rinse station tubing replacement To replace the rinse station tubing: 1. Shut down and unplug the sampler. 2. Gently push the sampler arm about 30 cm away from the home position. 3.

  • Page 60: Valve Module Replacement

    All manuals and user guides at all-guides.com Maintenance 5.9.1 Valve module replacement Refer to Figure To replace the valve module: 1. Disconnect all tubing from the valve. 2. Lift the valve module from the channel and disconnect the 6-pin connector. 3.

  • Page 61: Flow Cell Maintenance

    All manuals and user guides at all-guides.com Maintenance • The rotor seal in the valve module wears with use. Hence, routine replacement of the module is required. The main cause of early failure is the presence of abrasive particles in the samples. Filter or centrifuge the sample to avoid scratches on the rotor seal surface.

  • Page 62: Manifold Maintenance

    All manuals and user guides at all-guides.com Maintenance Figure 51 Detector module connection Detector module (bottom view) Detector cable Set screws for fiber optic cable Fiber optic cable 5.12 Manifold maintenance Follow the recommended cleaning procedures listed in the QuikChem methods. In addition, every 500 hours of use, clean each fitting and replace the O-rings as necessary.
  • Page 63 All manuals and user guides at all-guides.com Maintenance Lamp specifications ® ™ • Tungsten Halogen Lamp GE Constant Color Lamp • Catalog No. 31069 To replace the lamp: 1. Remove the top panel of the System Unit. 2. Locate the spare lamp, secured by a strap to the inside of the System Unit. 3.

  • Page 64: Fuse Replacement

    All manuals and user guides at all-guides.com Maintenance 5.15 Fuse replacement DANGER Potential Shock Hazard. Disconnect AC input before replacing fuse. Replace and secure the fuse holder before reconnecting AC input. Table 12 shows the specifications for the user-replaceable fuses. Table 12 Fuse specifications table Maximum active power (W),...

  • Page 65: Section 6 Troubleshooting

    Section 6 Troubleshooting All manuals and user guides at all-guides.com Read the entire Troubleshooting section before troubleshooting a specific problem. Figure 53 gives a flowchart of the general troubleshooting process. Figure 53 General troubleshooting process...

  • Page 66: Valve Timing Setup

    All manuals and user guides at all-guides.com Troubleshooting 6.1 Valve timing setup To set the method valve timing correctly is critical. Poor valve timing may result in the absence of peaks, presence of air spikes or very small peaks. Set the cycle period parameter as specified in the QuikChem method.

  • Page 67: Patterned Air Spikes

    All manuals and user guides at all-guides.com Troubleshooting While random air spikes may not affect the analysis, constant air spikes are a problem. One of the most common causes of constant air spikes is the introduction of air into the line due to the exhaustion of the reagent.

  • Page 68: Peak Shapes Interpretation And Troubleshooting

    All manuals and user guides at all-guides.com Troubleshooting 6.4 Peak shapes interpretation and troubleshooting 6.4.1 Refractive index A refractive index usually shows up as a negative peak before the analyte peak. There may be a small positive peak after the analyte peak. A refractive index is the difference in density between the carrier and sample matrices (Figure 55).

  • Page 69: Ph Effect

    All manuals and user guides at all-guides.com Troubleshooting 6.4.2 pH effect This phenomenon occurs when a change in pH occurs. Most chemical reactions are pH dependent, therefore the colored complex that is formed as a result of the reaction may vary in concentration if the conditions of the analysis are altered.

  • Page 70: Valve Artifact

    All manuals and user guides at all-guides.com Troubleshooting 6.4.3 Valve artifact This problem manifests itself when the valve is not operating properly. The symptom is noise that occurs before each analyte peak. A valve artifact can be mistaken for a refractive index.

  • Page 71: Flat-Topped Peaks

    All manuals and user guides at all-guides.com Troubleshooting 6.4.4.1 Common causes of carryover • Wrong cycle period: If the cycle period is too small, carryover will occur when a series of high standards are injected. Look up the correct cycle period in the QuikChem method.

  • Page 72: No Peaks

    All manuals and user guides at all-guides.com Troubleshooting • Manifold: The manifold may not match the diagram in the method or the pump tubes may be a different color. Make sure the correct interference filter is installed. • Overrange samples: Sample may be too concentrated. Dilute those samples or choose a different method.

  • Page 73: Noisy Baseline

    All manuals and user guides at all-guides.com Troubleshooting 6.4.7 Noisy baseline Any baseline will have some noise or disturbances. To observe this, zoom into the baseline section. Baseline noise becomes a problem when it interferes with the analysis. Methods that have colored reagent solutions will be typically more noisy. A noisy baseline may be easily noticed when running reagents only.

  • Page 74: Drifting Baseline

    All manuals and user guides at all-guides.com Troubleshooting Electronic noise Electronic noise can be identified by the insertion of an empty and clean flow cell in the detector, as well as an interference filter. Do not pump any reagents at this time. Run any worksheet to see the baseline on the screen.

  • Page 75: Negative Peaks And Carrier Contamination

    All manuals and user guides at all-guides.com Troubleshooting 6.4.9 Negative peaks and carrier contamination Negative peaks (Figure 62) are normal for some chemistries like hypochlorite, alkalinity, etc. These methods are called inverse chemistries. On the other hand, direct chemistries always produce positive peaks. If the carrier of a direct chemistry is spiked or contaminated with the analyte being determined, all standards and samples that have a lower concentration than that of the carrier will produce negative peaks.

  • Page 76: Find Blockages

    All manuals and user guides at all-guides.com Troubleshooting Figure 63 Flow blockages After determining the suspect line, it is necessary to follow it from the glass weight at the entrance of the reagent to the waste container after the flow cell. Check every connection of the suspect line, starting from the nipple that holds the glass weight.

  • Page 77: Injection Valve Troubleshooting

    All manuals and user guides at all-guides.com Troubleshooting 6.6 Injection valve troubleshooting Keep the valve clean at all times. Proper maintenance will help prevent many problems. There are two main problems that can occur with the valve: clogs and hardware failure. Refer to section 6.5.1 on page 74 to determine if blockages exist in the injection valve.

  • Page 78: Dilutor

    All manuals and user guides at all-guides.com Troubleshooting 6.10 Dilutor To test the accuracy of the dilutor, run five manually-diluted and five autodiluted standards. Compare the results to determine if the problem resides in the dilutor or elsewhere. Run a dye test. Use the dilutor to make a series of standards from the stock Universal dye.

  • Page 79: Dye Test

    All manuals and user guides at all-guides.com Troubleshooting 4. Turn the pump on. Press . The display must show a speed of 35 in NORMAL RUN order to continue this test. Refer to section 3.2 on page 16 if the display shows anything else.

  • Page 80: Dye Test To Determine Valve Problems

    All manuals and user guides at all-guides.com Troubleshooting 6.12.3 Dye test to determine valve problems Make up a series of dye standards that can be run with the method in use. Specify two injections for each standard and use a first-order-polynomial fit. Another option is to make up four dye standards and write a new method using exactly the same parameters for the method in use.

  • Page 81: Other Common Problems

    All manuals and user guides at all-guides.com Troubleshooting 6.13 Other common problems Table 14 Troubleshooting problems Problem type Problem description Solution The flow is moving There is a blockage on the manifold. Refer to section 6.5 on Flow related backwards. page Degas all reagents with helium unless otherwise indicated in the QuikChem method.
  • Page 82 All manuals and user guides at all-guides.com Troubleshooting Table 14 Troubleshooting problems (continued) Problem type Problem description Solution Application errors can occur when the computer is asked to do something it does not understand or it cannot do. These errors are more frequently found when more than one program is running on the computer at the same time.
  • Page 83 All manuals and user guides at all-guides.com Troubleshooting Table 14 Troubleshooting problems (continued) Problem type Problem description Solution The ammonia peaks are Make sure the pH at the waste line is 13. very small. Other ammonia method issues: Chemistry related Too much NaOH in the buffer may cause staining Use the hypochlorite solution recommended in the method.
  • Page 84 All manuals and user guides at all-guides.com Troubleshooting...

  • Page 85: Section 7 Replacement Parts And Accessories

    Section 7 Replacement Parts and Accessories All manuals and user guides at all-guides.com 7.1 Replacement parts Description Catalog number Cadmium Column 50237A Cadmium Column Maintenance Kit 50254 Channel (Sample Processing Module) A85040 Clip, harness for manifold 50025 Clip, large gray 50024L Clip, small gray 50023L...
  • Page 86 All manuals and user guides at all-guides.com Replacement Parts and Accessories 7.1 Replacement parts (continued) Description Catalog number Kits Accessory Kit, QC8500 A85025 Degassing Tube 50100L Flare Kit for Nitrate 50962 Flare Kit for Sulfate 50963 Maintenance Kit, cadmium column 50254 Pump tubing 534XX...

  • Page 87: Accessories

    All manuals and user guides at all-guides.com Replacement Parts and Accessories 7.2 Accessories Description Catalog number Cable, interface- ASX510 21415L Kit, tubing, ASX Samplers 89040 Label, tie wrap with customized text 50050 Rack, 60 position, 16 mm 21302 Rack, 90 position, 13 mm 21301L Rack, 90 position, 13 mm with inserts 21311...
  • Page 88 All manuals and user guides at all-guides.com Replacement Parts and Accessories...

  • Page 89: Section 8 Contact Information

    • Brief description or model number • Quantity International Customers Hach maintains a worldwide network of dealers and distributors. To locate the representative nearest you, send an e-mail to: intl@hach.com or contact: Hach Company World Headquarters; Loveland, Colorado, U.S.A. Telephone: (970) 669-3050; Fax: (970) 461-3915 Technical and Customer Service (U.S.A.
  • Page 90 All manuals and user guides at all-guides.com...

  • Page 91: Section 9 Warranty

    In the event that a defect is discovered during the warranty period, Lachat Instruments - Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price, excluding original shipping and handling charges.
  • Page 92 All manuals and user guides at all-guides.com Warranty...

  • Page 93: Section 10 Certification

    Section 10 Certification All manuals and user guides at all-guides.com Hach Company certifies this instrument was tested thoroughly, inspected and found to meet its published specifications when it was shipped from the factory. The Model QC8500 Series 2 has been tested and is certified as indicated to the following...
  • Page 94 All manuals and user guides at all-guides.com Certification...

  • Page 95: Appendix A Channel Installation

    Appendix A Channel Installation All manuals and user guides at all-guides.com The QC8500 Series 2 analyzer can be expanded with modular channels and daisy-chain connections. Heater controller, valve controller and leak detector signals share one ribbon cable. The controller cable and power cable connections are made from the new channel to the adjacent channel.
  • Page 96 All manuals and user guides at all-guides.com Channel Installation 5. Loosen the screws on the System Unit cover and remove the cover. Note: It is not necessary to disconnect the ground cord on the cover. 6. Fit the tongue on the back of the new channel into the groove on the front of the existing channel.

  • Page 97: Channel Removal

    All manuals and user guides at all-guides.com Channel Installation 11. Thread the fiber optic cable into the opening on the System Unit. Plug the cable into an available opening on the terminal opposite the Tungsten lamp (Figure 67). Figure 67 Fiber optic cable connection Lamp cover Fiber optic cables plug into available openings in the connector terminal...
  • Page 98 All manuals and user guides at all-guides.com Channel Installation 8. Loosen the bottom screw on each end of the channel. 9. Lift the channel and set aside. 10. Snap the cover panels into place. Replace the System Unit cover and tighten the screws.

  • Page 99: Appendix B Ion Chromatography

    Appendix B Ion Chromatography All manuals and user guides at all-guides.com The channel for Ion Chromatography (IC) consists of a 6-port injection valve and a 10-port suppressor valve connected through a split cable and a conductivity module. The 10-port valve is mounted in the heater assembly drip tray. The conductivity module connects to the System Unit through the detector cable (Figure 68).

  • Page 100: Suppressor Valve Assembly Replacement

    All manuals and user guides at all-guides.com Ion Chromatography B.1 Suppressor valve assembly replacement CAUTION Potential Chemical Hazard. Turn off the System Unit and disconnect from power before connecting or disconnecting channels or channel components. To replace the suppressor valve assembly: 1.

  • Page 101: Manifold Installation

    All manuals and user guides at all-guides.com Ion Chromatography B.3 Manifold installation Most IC manifolds will have two columns: a guard column and an analytical column. The purpose of the guard column is to protect the analytical column. Any unwanted particulates will be retained in the guard column.
  • Page 102 All manuals and user guides at all-guides.com Ion Chromatography...

  • Page 103: Index

    All manuals and user guides at all-guides.com Index flow fit connections ........... 37 fluoride detectors ............. 42 air bubbles ............... 12 fuse specifications ............ 62 air spikes ..............64 fuse, replacement ............ 62 Alternating Coil ............84 Ammonia ..............72 Application Error ............
  • Page 104 All manuals and user guides at all-guides.com Index start-up test .............. 41 switching valve ............38 reagent limitation ............. 69 system unit installation ..........11 reagent line .............. 35 system unit interface panel ........12 refractive index ............66 rinse station ............. 24 Tygon drain ............

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