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5.0 PERIODIC MAINTENANCE
Be sure to flush your boiler water level control daily. Failure to follow this procedure can
cause the control to malfunction resulting in serious boiler damage.
The Boiler Water Level Control installed on your boiler requires periodic maintenance.
As boiler water circulates into the float chamber, sand, scale and other sediment may be
deposited in the float chamber. While the chamber has been designed with a large
accumulation bowl, it is necessary to flush the sediment from the chamber by blowing
down the control so that the accumulation of sediment does not interfere with the
movement of the float in the control. Control must be flushed at least once a day.
CAUTION: Protect yourself. When flushing control, hot water and steam
will flow out of the drain.
When flushing control, note water level in gauge glass, allow the boiler to fill if
necessary, and also to come up to temperature.
Before flushing control, note that water level in gauge glass is within operating range and
the boiler pressure is at least 6 psi. While the boiler is being fired, open blowdown valve
at bottom of control by rotating the handle counterclockwise about 1/4 turn to fully open
the valve. Opening the blowdown valve also checks the cut-off operation. Float should
drop shutting elements off, hot water and steam will flow out the drain flushing away
sediment.
CAUTION: If heater does not shut off during blowdown, immediately
discontinue use of appliance and call for service.
