EAR70
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax:
+81(6)6659-8510 E-mail: [email protected]
EM-4885 P. 8 / 8
MAINTENANCE
For effective use and longer life of the unit, regular checking appropriate at once a year is recommended. In the case regular
checking is not performed, the unit may result in failure for shorter life-span depending on its operating conditions.
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CHECKING POINT
• Check the main power voltage. (voltmeter)
• Measure the open-shut operation time. (stopwatch)
• No abnormal noise during open-shut operation. (auditory)
• No rust, no corrosion inside the machinery. (visual)
• Non condensing inside the machinery. (visual)
• No discolored parts inside the machinery where can be visually checked. (visual)
• No significant vibration variation from the time of installation during operation. (tactile)
• No deterioration and changes of the packing and O-ring between the mechanism and the cover, and on the inner surface of
the lid of the BOX. (visual)
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NO NECESSARY CHECKING POINT
There is no need of lubrication for the transmission gear mechanism inside the machinery.
The mechanism is lubricated with organic molybdenum grease. There is no oil separation from thickener due to high or low
temperature, or frequent operation. (While using, the oil color changes to kind of black. It is no problem for quality.)
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REGULAR TEST RUNNING
If the valve is not frequently operated, run a test operation regularly (once a week, for example) to check proper functions.
FAILURE AND PROVISION
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NO OPERATION
First, perform the checking point.
• Replacing the fuse: Exchanging the parts
• Rust and corrosion inside the machinery: Exchanging the unit
• Failure on power circuit and control PWB: Exchanging the unit
• Degradation of various parts due to end of life-span: Exchanging the unit
