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Summary of Contents for Casella Evolution CM2010
- Page 1 Internal Zero and Span Module for Evolution Series CM2010 Ozone Analyser Service Manual Regent House, Wolseley Road Kempston, Bedford England MK42 7JY Tel : + 44(0) 1234 844100 Fax: + 44(0) 1234 841490 Email info@casellamonitor.com HB4014-02 Printed in the UK Mar - 2011...
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Page 2: Table Of Contents
EVOLUTION SERIES CM2010 OZONE ANALYSER Contents Installation ............................3 Theory of Operation ......................... 5 IZS Description ............................5 Generator Chamber ............................. 5 Zero Air Scrubber ............................5 Pneumatic Valves ............................5 Pneumatic Fittings and Tubing ........................5 IZS Control PCA ............................5 Service ............................... -
Page 3: Installation
EVOLUTION SERIES CM2010 OZONE ANALYSER 1 Installation This section contains a diagram outlining the installation of the IZS module. If the IZS module has al- ready been installed, disregard this section. If required, install the IZS module as shown in Figure 1-1 and Figure 1-2 below. Figure 1-1 CM2010 IZS Installation HB4014-02... - Page 4 EVOLUTION SERIES CM2010 OZONE ANALYSER Figure 1-2 CM2010 IZS Plumbing HB4014-02...
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Page 5: Theory Of Operation
EVOLUTION SERIES CM2010 OZONE ANALYSER 2 Theory of Operation The CM2010 IZS uses the principle of UV irradiation of oxygen molecules to produce ozone. Oxygen absorbs ultraviolet light whose wavelength is approximately 185 nanometres (nm). The energy at this wavelength is sufficient to separate the oxygen molecule into two atoms. The oxygen atoms then react with oxygen molecules to form ozone. - Page 6 EVOLUTION SERIES CM2010 OZONE ANALYSER Figure 2-1 Pneumatic diagram HB4014-02...
- Page 7 EVOLUTION SERIES CM2010 OZONE ANALYSER Figure 2-2 Major components HB4014-02...
- Page 8 EVOLUTION SERIES CM2010 OZONE ANALYSER Figure 2-3 System block diagram HB4014-02...
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Page 9: Service
EVOLUTION SERIES CM2010 OZONE ANALYSER 3 Service This section includes periodic maintenance procedures, a list of replaceable parts, a troubleshooting voltages table, and a troubleshooting guide. 3.1 Periodic Maintenance The table below outlines a periodic maintenance schedule for the CM2010 IZS module. This schedule is based on experience under normal operating conditions, and may need to be modified to suit specific operating conditions. -
Page 10: Check Zero Air Scrubber
EVOLUTION SERIES CM2010 OZONE ANALYSER Check Zero Air Scrubber The zero air supply is critical to the operation of the CM2010 analyser and the IZS module. Poor zero air can result in numerous problems (for example, inaccurate measurements near zero and span drift). Check the quality of the zero air system by challenging the analyser with a known good zero air source (such as commercially available Ultra Zero Air) or a known good charcoal scrubber. -
Page 11: Disposable Filtration Unit (Dfu) Replacement
EVOLUTION SERIES CM2010 OZONE ANALYSER 5. Reinstall the scrubber in the analyser. Secure the Velcro strap and reconnect the pneumatic fit- ting. 6. Turn the analyser pump back on. Disposable Filtration Unit (DFU) Replacement The zero air from the scrubber is filtered by the disposable filtration unit (DFU) to prevent contamination of the pneumatics and reaction cell. -
Page 12: Flow Test
EVOLUTION SERIES CM2010 OZONE ANALYSER Flow Test Perform a flow test of the IZS module whenever a pneumatic components are replaced or whenever corrective maintenance is performed. Required Equipment: Flow meter (0.50 slpm nominal) 1. From the CALIBRATION MENU, select CAL MODE: MEASURE. 2. -
Page 13: Troubleshooting
EVOLUTION SERIES CM2010 OZONE ANALYSER 3.3 Troubleshooting DC Power Supply Voltages Before consulting the troubleshooting section below, verify that the DC power supply voltages on the Heater Control PCA are present and within the specifications given for each voltage listed in the follow- ing table. -
Page 14: Routine Maintenance
EVOLUTION SERIES CM2010 OZONE ANALYSER Symptom Possible Cause Solution Check the zero air supply (refer to “Zero Air Scrubber” on page Error! Bad zero air. Bookmark not defined.) and re- place DFU filter. Leak. Perform a leak check. Verify a purge flow of approximately “Flow Loss of purge flow through the 35 cc/min. -
Page 15: Lamp Replacement
EVOLUTION SERIES CM2010 OZONE ANALYSER Lamp Replacement Over time the UV lamp output degrades. This may cause the O generator output to become unstable or too low. Replace the UV lamp as follows: 1. Turn the analyser off. 2. Loosen the set screw securing the UV lamp into the generator body. 3. -
Page 16: Circuit Diagrams
EVOLUTION SERIES CM2010 OZONE ANALYSER 4 Circuit Diagrams HB4014-02...
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