Hubbell ST - Manual (Page 19)

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11. Convection packages may be equipped with an integral circulator. This circulator should be
serviced per the enclosed pump O&M manual.
12. The unit as well as all strainers should be blown down regularly to remove any trash, and
sediment that may have accumulated.
13. If unit is supplied with anode rod, it shall be inspected for excessive wear.
14. Packing on valves and regulators should be checked for leaks and repaired or replaced as
necessary.
15. To seal the manhole gasket, first install the cover, crab, new gasket, bolt and nut. Turn the
nut until it is snug against the crab, then turn 1 ½ revolutions. Fill the tank with water and
allow pressure to build up, letting the water pressure seal the gasket. (Some leakage may