INSTALLATION & OPERATION MANUAL 10056 REV 0 (03/21)
PAGE
13
OF 24
G
as
F
ired
S
teamer
P
ERIODIC
M
AINTENANCE
P
ERIODIC
M
AINTENANCE
WARNING
Disconnect the unit from the power supply before cleaning or servicing appliance.
IMPORTANT INSTRUCTIONS
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 burners off, hot water and
steam will flow out the drain flushing away sediment.
CAUTION
If burner does not shut off during blowdown, immediately discontinue use of appliance and call for service.
Continue draining water for about fifteen (15) seconds, from control until water is clean. Manually close valve. Recheck gauge
glass. If water level has dropped significantly, wait for the boiler to restore water level and pressure and repeat if necessary.