Models 24-CGA-10 and 24-CEA-10
SteamCraft 10 Service Manual, Chapter 5
Page 87
Rinse Solenoid Valves
Drain Solenoid Valves
Water Fill Solenoid Valves
Condenser Solenoid Valves
The rinse solenoid valve controls water flow to the float cylinder during generator
blowdown. The rinse solenoid operates only with the ON/OFF switch in the OFF
position. The 3-minute timer controls operation of the rinse solenoid valve. Refer to
3-minute timer text on page 85.
During steaming operations, sediment collects in the float cylinder. Sediment
buildup in the cylinder impedes smooth operation of the floats as the water level
rises and falls. The rinse flow flushes sediment that collects during operation from
the cylinder. Without this rinse, sticky float operation will cause improper water
levels, heater burnout, and other malfunctions and damage.
The drain solenoid valve controls water flow from the steam generator to the drain
fitting at the bottom of the unit. Model 24-CGA-10 gas -fired units have one drain
valve. Model 24-CEA-10 electric heater units have two drain valves, one for each
generator. Operation of this valve is detailed on page 81.
The fill solenoid valve controls water flow into the steam generator. The valve
opens and closes as the water level fluctuates in the float cylinder and generator.
During steaming operations, the fill valve cycles approximately two to five times
each minute.
• While the water level in the float cylinder is below the upper limit, the high level
float switch is closed. This energizes the solenoid, which opens the valve.
• When the water level in the float cylinder reaches the upper limit, the high level
float switch opens. This deenergizes the solenoid, which closes the valve.
• During the blowdown cycle, the 3-minute timer energizes the solenoid, opening
the valve. Refer to 3-Minute Timer on page 85.
The valve operates at a maximum water pressure of 60 psi. Higher pressures cause
unnecessary valve wear and require frequent valve replacement. If necessary, install
a pressure regulator set at 50 psi.
The condenser solenoid valve controls cold water flow to the condenser at the back
of each cooking compartment. The valve injects cold water into the condenser to
cool the vapor and fluid draining from the steamer. This reduces pressure in the
compartment drain. Low pressure in the drain maintains optimum performance of
the steamer. With a hot or warm water supply connected to the condenser solenoid
valve, the condenser WILL NOT function properly, and equipment damage may
result Operation of this valve is detailed on page 80.
