Middleby Cooking Systems Group PS360/PS360WB - Manual (Page 11)

1-5
SECTION 1
DESCRIPTION
II. COMPONENT FUNCTION
The components for the lower and upper ovens are identical.
The following description covers the lower oven.
A. Conveyor
The conveyor is driven by a direct current electric motor
operating through a gear reducer, (See Figure 1-6). The motor
speed is controlled by a digital control. The stainless steel
wire belt can travel in either direction and at variable speeds.
Note that only one oven section will control the speed of the
conveyor (2 for a double tandem oven).
B. Gas Burner
Turning the heat switch to "I" will initially set up the oven purge
circuit. After approximately 45 seconds, the solid-state ignition
control lights a pilot by an electric spark.
After the pilot is lit, the main valve will open, permitting gas to go
to the burner and heat the oven.
The main burner and pilot gas are extinguished when heat is off.
This system permits the main gas valve to open only when the
pilot burner is proven to be lit.
If the pilot flame does not light or a loss of flame occurs, the main
valve closes and the red lamp is lit on the "RESET" switch. The
"RESET" switch must be pushed to restart the ignition
sequence.
Note that the gas burner of each oven section is independently
controlled by that section's temperature controller.
C. Front Window
A front window provides access to each section of the oven for
items which do not require full bake time, such as sandwiches,
cookies, small items or cheese melting processes.
The window is also used for viewing items being baked and
for cleaning.
Figure 1-6. Conveyor Drive Motor