Models 24-CGA-10 and 24-CEA-10
SteamCraft 10 Service Manual Chapter 5
Page 81
Drain Valve Functions
The drain solenoid valve, acting with the water fill valve, performs three critical
steam generator functions. The valve directs water flow to fill. drain. and rinse the
steam generator. Refer to Figure 5-13. The valve has one water inlet and two
outlets. One outlet directs water to the drain manifold. The other
directs water flow to the steam generator.
A. Draining the Steam Generator. The solenoid drain valve is normally open
directing water flow to the drain manifold. When the unit is turned on. the drain
valve is open and the water fill valve is closed.
B. Filling the Steam Generator. When the solenoid is energized, it closes the valve.
In this position, the valve directs water flow into the steam generator. The water
fill valve opens to fill the generator.
C. 3-Minute Blowdown. During blowdown, the drain valve opens to direct water
flow to the drain manifold. The water fill valve also opens. The supply water
rushes through the drain valve and pulls the water from the generator. This
induced flow and turbulence flushes sediment from the steam generator.
Figure 5-13. Drain Valve Functions
Cleveland Range, Inc.
Printed 3/93