Installation & Operation Manual
MAINTENANCE
General Directions
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MOUNTING, ELECTRICAL INSTALLATION, START-UP AND MAINTENANCE OF THE INSTRUMENT MAY ONLY BE CARRIED
OUT BY TRAINED PERSONNEL AUTHORIZED BY THE OPERATOR OF THE FACILITY. PERSONNEL MUST READ AND
UNDERSTAND THIS OPERATING MANUAL BEFORE CARRYING OUT ITS INSTRUCTIONS.
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THE ER-420 MAY ONLY BE OPERATED BY PERSONNEL WHO ARE AUTHORIZED AND TRAINED BY THE OPERATOR OF THE
FACILITY. ALL INSTRUCTIONS IN THIS MANUAL ARE TO BE OBSERVED.
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ENSURE THAT THE MEASURING SYSTEM IS CORRECTLY WIRED UP ACCORDING TO THE WIRING DIAGRAMS.
PROTECTION AGAINST ACCIDENTAL CONTACT IS NO LONGER ASSURED WHEN THE HOUSING COVER IS REMOVED OR
THE PANEL CABINET HAS BEEN OPENED (DANGER FROM ELECTRICAL SHOCK). THE HOUSING MAY ONLY BE OPENED
BY TRAINED PERSONNEL.
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TAKE CAREFUL NOTICE OF
The ER-420 does not require special maintenance unless it is used in low-temperature applications or surroundings with high
humidity (above 90% annual mean) It is the users responsibility to take all precautions to dehumidify the internal atmosphere
of the ER-420 in such a way that no condensation will occur, for example by placing dry silica-gel sachet in the casing just
before closing it Furthermore, it is required to replace or dry the silica gel periodically as advised by the silica gel supplier
Check periodically:
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The condition of the casing, cable glands and front panel
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The input/output wiring for reliability and aging symptoms
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The process accuracy As a result of wear and tear, re-calibration of the flowmeter might be necessary Remember to
re-enter any subsequent K-factor alterations
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The indication for low-battery
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Clean the casing with soapy water Do not use any aggressive solvents as these might damage the polyester coating
Repair
Please contact customer service at Badger Meter
Page 33
March 2013