Whirlpool 4322452 manual Cleaning the Oven Burner

When the thermostat senses that the selected oven temperature is reached, its internal contacts open, as discussed earlier, and the electrical circuit is terminated (see Figure 4-20). The bimetal cools and closes the safety valve to shut off the gas flow to the oven burner. This cycling of the electrical system continues throughout the cooking cycle.

N

L1

Thermostat Switch	To Oven Burner
Contacts Open

Oven Is Cooling

Oven Glo-Bar

Ignitor

Low Amperage	Safety Valve Safety Valve Closed
	No Gas Flow
	To Oven Burner

Figure 4-20

200˚ Heat From Oven

CLEANING THE OVEN BURNER

The most common burner maIfunction is clogging due to excess dirt and debris, which can enter the burner through the burner ports. This excess dirt can block one or several of the ports so that the burner will have trouble lighting, or will not light at all. In this case, the burner ports must be cleared using a pin (see Figure 4-21).

The air shutter is an additional inlet where dust can enter a main burner. Whether or not the burner is operating, dust can still be drawn into the burner through the air shutter. The debris can clog the venturi, orifice, mixing tube, or burner ports. Again, this type of clogging can reduce, if not stop, the flow of gas through the burner. In addition, the primary air shutter itself can become blocked, restricting the flow of primary air into the burner.

In any event, cleaning the burner normally eliminates most of the dirt buildup. Also, it is a good practice to keep the area immediately surrounding the main burner as clean as possible to reduce the possibility of clogging any part of the main burner.

Oven

Burner

Air Shutter

Pin

Figure 4-21

Page 4-11