Sight glass tubes can become clogged at the intake and hold lubricant in the tube. Even when the oil or grease level in the equipment drops low, the sight glass may continue to indicate the level is adequate. Use a wire or pipe-cleaner brush at each servicing to make sure the sight glass tube is clear from the intake to the glass. This applies to oil sight glasses that can get clogged from contaminants as well as to grease applicators that can have dry grease bridges. (Bill Morgan, City of Vero Beach Water and Sewer)
Join us in Charlotte, N.C., on July 23-25 for
Machinery Lubrication training.
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