Toshiba LF414 manual Maintenance, „ Cleaning, materials, „ Mag-Prover Built-In Calibrator, － ４３ －

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7.1 Maintenance

„Cleaning

„Adhesion might be created in the detectore over a long period of time when used on certain

materials.

Try to confirm whether to cause the adhesion in the detector pipe when the phenomenon is seen, and and an abnormality (ex. decreasing indication, etc.) is confirmed.

Please clean with a soft brush etc. and remove any unnecessary build up inside the meter. When using it in the line to which such a phenomenon occurs easily, it is recommended that the detector pipe be cleaned regularly. Use new gaskets when reinstalling the flowmeter detector in the pipeline.

„Mag-Prover Built-In Calibrator

The converter has a built-in reference signal calibration and verification circuit that allows you to re-verify the original magmeter flow lab calibration without the need for external devices. This reference signal can be used to check the zero and span of the converter for the purpose of instrumentation maintenance or periodical inspection. Refer to combined converter's manual.

„Operative life

The operative life of this flowmeter is 10 years from the date of shipment.

The life of the flowmeter differs depending on the environmental conditions and the way it was used. To extend the life of the flowmeter, inspect the flowmeter periodically and clean or replace components if necessary.

„Product disposal

The electromagnetic flowmeter must be disposed of, according to the rules and regulations of your local government.

Especially if you dispose of electrolytic capacitors to replace parts, have it done by an agency which is licensed to handle industry waste materials.

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Integral

Check/Replacement of the display unit

When characters displayed on the LCD display become thin or blots come out, please adjust the setting of LCD's display density. If the display is still not improved, the display unit comes to the end of its life. Please replace the display unit with a new one. In order to use the display unit stably for a long time, it is preferable to replace it early. For inspection and replacement, please contact your nearest Toshiba representative.

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Integral

Power supply unit (also used for excitation board)

Electronic components deteriorate faster when the ambient temperature is high. The life of the power supply unit in the converter is 9 to 10 years if the ambient temperature is 40°C, and 5 to 6 years if it is 50° C. To extend the life of the flowmeter, we recommend you replace the power supply unit early.

Contact your nearest Toshiba representative for a flowmeter inspection or unit replacement.

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