Cleveland Range Convotherm Combination Oven-Steamer Electric 6.20 - Manual (Page 85)

CLEVELAND RANGE OES 6.20/10.10
SEQUENCE OF OPERATIONS
When using these instructions refer to the OES 6.20/10.10 wiring schematic.
1
When incoming power (220 VAC) is connected to the combi, 220 VAC is sent to
a
The contacts 2,4 and 6 of the Safety Contactor (KO)
b
The terminals 2 and 5 of the Control Power Switch (S1)
2
When the Control Power Switch (S1) is turned on (closed)
a
The red light on the switch is energized.
b
Incoming power (220 VAC) is sent through the 2A fuse (F1.1) to
• The 12 vdc power supply (G1)
◊ 12vdc is sent to terminals 3 and 4 of the connector X10 on the Control
Board (A10)
• Terminal 1 of connector X12 on the Control Board (A10)
• Terminal 10 of connector X13 on the Control Board (A10)
• The return of the Supply is sent to terminal 7 of connector X13 on the Control
Board (A10)
c
With 220 VAC to the Control Board (A10) The Operation Board (A11) is
energized
• An alarm will sound for one second
• All the LED’s and the display will energize one at a time.
• “STARTING” will be displayed for 3 seconds
• “please wait” will be displayed
• The international model number will be displayed
• The time and date will be displayed and this will continue until the on/off
switch is depressed.
3
When the ON/OFF is depressed with the combi in the steam mode
a
The display will show the set temperature and set time when the flush cycle is
complete.
4
With the combi in the steam mode with time on the timer, the door closed and the
start switch is depressed
a
The front display will include a lighted bar under the steam symbol
• When the heat circuit is energized the heat symbol will be energized
• The cooking mode symbol will be energized.
• The time display will invert and begin to count down.
b
The fan circuit is energized
• If the combi fan is in the normal setting 220 VAC is sent from terminal 5 on
connector X11 through the normally closed auxiliary contacts of contactor
K57 to the coils of contactors K55 and K56
◊ The K55 and K56 contactors close sending 220 VAC through the Q56
overload to the motor and the motor turns at a high speed.
◊ The normally closed auxiliary contacts of both K55 and K56 open
preventing the K57 contactor from energizing.
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