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FULL SIZE ELECTRIC CONVECTION OVENS - ELECTRICAL OPERATION
F25105 (December 2001)Page 29 of 60
ELECTRICAL OPERATION
COMPONENT FUNCTION
Power Switch (S1) ............
Determines the mode of operation; ON, OFF, or COOL DOWN.
Oven Light Switch (S2) ........
Controls the oven cavity lights.
Fan Speed Switch (S3) ........
Controls blower motor speed between High and Low settings (VC4ES/6ES
and VC4ED/6ED only).
Alarm/Buzzer ................
Signals the end of a "Cook" cycle when cooking time expires.
Cook Timer .................
Counts the "Cook" time of the product and signals the buzzer at the end of
the cycle (VC4ES/6ES and VC4ED/6ED only).
Door Switch.................
Allows the oven to operate when the doors are closed but stops the oven
from operating when the doors are opened.
Blower Motor................
Operates the oven cavity blower (convection fan).
Transformer (T1) .............
Provides 24VAC power to the Computer Control (VC4EC/6EC only).
Transformer (T2) .............
Provides 240VAC power to the oven control circuit and blower motor
(480VAC models only).
Solid State temperature
Control .....................
Monitors temperature sensor and regulates the oven cavity temperature by
controlling 2CON to energize the heating elements when the control calls
for heat.
High Limit Thermostat ........
Protects the oven from temperatures above 550°F by removing power
from the heating circuit. Auto resets at 500°F.
Computer Control ............
Monitors temperature sensor and regulates the oven cavity temperature by
controlling 2CON to energize the heating elements when the control calls
for heat. Also, counts the "Cook" time (normal cooking) of the product and
signals the electronic alarm at the end of the cycle. If "Cook" & "Hold"
mode is selected, when the "Cook" (then hold) time expires, the oven
heating stops and the oven enters "Hold" mode. Once the oven cavity
temperature drops to 150°F, the heat comes back on and the oven cycles
at this temperature to hold the cooked product. Cook & Hold is standard on
computer models. The selected mode also determines the fixed blower
speed of High for "Cook" and Low for "Cook & Hold".
SSR1 & SSR2
...............
When SSR1 is energized by computer control, connects power to blower
motor for High fan speed operation in normal "Cook" mode. In "Cook &
Hold" Mode only, SSR1 is de-energized and SSR2 is energized by
computer control and connects power to blower motor for Low fan speed
operation (VC4EC/6EC only).
1CON & 2CON ...............
Provides power to heating elements when both are energized. 1CON is
energized when power switch is turned ON. 2CON is energized by the
temperature control when a call for heat is made.
Power ON Light ..............
Lit whenever the power switch (S1) is turned to ON or Cool Down mode.
Heat Light ..................
Lit whenever temperature control is calling for heat.