a.
Power removed from heating
elements and heating stops.
5.
The oven will continue to cycle on the
temperature control until the doors are opened or
power switch (S1) is turned to the OFF or COOL
DOWN position.
Timer Cycle, Cooking
(KX Thermostat or Solid State Control)
NOTE:
The "Cook" timer operates independently of
the heating cycle. Additional time can be set or the
timer can be turned OFF throughout the cooking cycle.
1.
With the power switch turned ON, power is
supplied to "Cook" timer terminal 1.
2.
Set "Cook" timer to desired time.
A.
Contacts 1 & 3 close, timer motor is
energized and timing "down" begins
3.
Time expires on "Cook" timer .
A.
Contacts 1 & 3 open, timer motor is
deenergized and timing stops.
B.
Contacts 1 & 4 close.
1)
Buzzer energized and sounds.
NOTE:
The buzzer continues to sound until the timer
dial is set to the OFF position or additional time is set.
Cool Down Cycle
(KX Thermostat or Solid State Control)
1.
Conditions.
A.
Oven is ON.
B.
Oven cavity temperature needs to be
lowered.
C.
Doors are open (door switch contacts
OPEN).
D.
Fan speed switch (S3) set to "Hi".
2.
Power Switch (S1) turned to COOL DOWN.
A.
Power ON light (Amber) goes out.
B.
Convection fan motor energized.
NOTE:
Fan speed switch (S3) can be set to operate
at high or low fan speed.
3.
If doors are CLOSED (door switch contacts
CLOSED):
A.
Power ON light (Amber) comes ON.
B.
1CON coil is energized but heating
elements are not powered.
C.
Component cooling fan energized.
D.
Power is supplied to:
1)
"Cook" timer terminal 1. If a time is
dialed, timer will operate and buzzer
will sound when timer reaches zero.
2)
Oven cavity light switch (S3) wire #1.
Turns cavity lights ON/OFF; does not
affect "Cool down" cycle.
4.
The oven will remain in this condition until the
power switch (S1) is turned to the OFF or ON
position.
SEQUENCE OF OPERATION -
VC4EC, VC6EC (Computer Control)
Refer to diagram 6966 for electrical sequence of
operation.
Cook Cycle
1.
Conditions.
A.
Oven connected to correct voltage and is
properly grounded.
B.
Power switch (S1) OFF.
C.
Computer control is setup properly and
ready to use. NOTE: The set point
temperature of the computer control will be
the last temperature that was set.
D.
High limit thermostat CLOSED.
E.
Oven doors closed (door switch contacts
CLOSED).
F.
Oven cavity temperature below 140°F.
2.
Power switch (S1) turned ON.
A.
1CON coil energized.
B.
24VAC transformer (T1) is energized.
1)
Computer control is energized and
performs a power ON self test before
energizing outputs. If the control
passes self test, then the outputs are
energized and operation sequence
continues. If control does not pass self
test then the corresponding error code
is displayed.
C.
Component cooling fan energized.
D.
Power is connected to:
1)
Terminal 1 on solid state relay 1 (SSR1
- load side) and solid state relay 2
(SSR2 - load side).
VC4E & VC6E Series Full Size Electric Convection Ovens - ELECTRICAL OPERATION
F25105 Rev. B (0217)
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