Page 94
SteamCraft 10 Service Manual, Chapter 6
Models 24-CGA-10 and 24-CEA-10
Component
Normal
Action
ON/OFF = OFF
PREHEATING
STEAMING
SLOWDOWN
1. Condenser Solenoid Valve (CEA)
NC
Open
Open
Closed
2. Condenser Solenoid Valve (CGA)
NC
Close
d
Open
Close
d
3. Rinse Solenoid Valve
NC
Closed
Closed
Open3-Min
4. Drain Solenoid Valve
NO
Close
d
Closed
Open3-Min
5. Water Fill Solenoid Valve
NC
Cycles open/closed to maintain water
level in steam generator.
Open3-Min
6. Upper Float Switch
NC
Opens to keep steam generator water
level below upper limit When this switch
opens, it de-energizes and closes th
e
Fill
Valve (item 5).
NC
7. Lower Float Switch
NO
Closes when steam generator water level
is above minimum safety limit When
closed
,
thi
s
switch energizes the water
heating components.
NO
8. Preheat Thermostat (preheat side)
NC
Opens if steam generator water
temperature is above 185°F. Starts and
stops heating components during the
Preheat cycle.
NC
9. Preheat Thermostat (R4 side) (CGA)
NO
Closes when steam generator water
temperature is above 185°F. Controls
action of th
e
Steam Relief Valve (item
13).
NO
10. Compartment Thermostat (Used with
electronic key pad timers only.)
NO
Close
s
when cooking compartment
temperature is above 190°F. Delays
timer countdown until compartment
reaches cooking temperature.
NO
11. High-Temp Limit Switch (CEA)
NC
Opens when heating element
temperature is above 240°F. Protects
elements from overheating.
NC
12. Air Prover Pressure Switch (CGA)
NO
Opens when burner fan supplies required
combustion air volume. When this
switch closes the gas burner
ignition/combustion cycle starts.
NO
13. Steam Relief Valve (CGA)
NO
Closes when item 9 closes and energizes
relay R4. When closed this valve directs
steam into the lower cooking
comp artment.
NO
14. Compartment Steam Valve (CGA)
(one valve for each compartment)
NC
Close
d
Open for selected
compartment.
NC
Figure 6-1. Normally Open and Normally Closed Valves
and Contacts
Printed 3/93
Cleveland Range, Inc.