HRX-OM-J049-A
Chapter 6 Unit Maintenance
6.2 Inspection and Cleaning
HRG010-W HRG015-W
1st edition : Aug. 2006
Rev. A: May. 2007
6-4
6.2.2 Quarterly
inspection
Replacement of circulating fluid
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Periodic replacement of circulating fluid (fresh water)
Potential algae growth or aqueous corrosion may occur if the old fluid is reused.
Assure a periodic replacement of the fluid according to the situation.
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Cleaning of tank
Check the circulating fluid in the tank for impurities and foreign matters, and
the tank for slime inside. Assure a periodic cleaning of the tank.
Cleaning of facility water
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Water quality standards for faciliry water should fall within specifications.
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Assure a periodic cleaning of faciliry water equipment and a periodic
replacement of faciliry water.
6.2.3 Biannual
inspection
Check for leak from the pump mechanical sealing
Remove the panel and check for leak from the pump mechanical sealing. When a
leak is found, it is necessary to replace the mechanical sealing. Contact the local
distributor or SMC’s sales branch.
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Leak from the mechanical sealing
Leakage from the mechanical sealing occurs in structure. Although JIS defines
leakage for 3cc/hr or less (reference value), 0.3cc/hr or more is our leakage
standard suggested for the replacement of the mechanical sealing.
A recommended replacement cycle of the mechanical sealing is 6000 to 8000
hours a year (usually).
