Whirlpool GBS277PDB Technical Guide - Page 17

THEORY OF OPERATION AIR FLOW Intake air is drawn into the oven at two locations: through the control panel vent, (over the latch assembly and the inner chassis top), and through the side mounting rails (over the oven sides and around the back). Air also enters the oven at the back through the openings on the upper section of the rear cover. At this point, the air from the sides and the top mix. The air is then pulled through the blower, down the back of the unit between the outer and inner rear covers, and out the front of the unit via the bottom vent trim. Air from the blower is forced over the cavity vent. The pressure differential causes air to be drawn from the cavity, where the air exits through a small opening on the left side of the control panel vent. Air passes through the oven door by a combination of natural and forced convection. Air enters the door through the bottom slots, and passes between the outer glass, and the angled inner glass. This air exits through the top slots in the door via natural convection. Air also enters the bottom of the door, and is drawn between the two pieces of inner door glass, where it exits through the top slots in the upper part of the door. This air is then drawn into the blower, and is forced down the back of the unit between the inner and outer chassis covers, and finally out the bottom vent. The purpose of the convection fan is to circulate hot air inside the oven cavity, not to evacuate the air. Thus, the air flow for the convection models and the non-convection models, is the same. BLOWER OVEN EXHAUST AIR INTAKE AIR INTAKE AIR EXHAUST AIR 3-1