PHOTOGRAPH 902
MODIFIED MODEL B3-850 HIGH TEMPERATURE WALK-IN OVEN, Serial No. 420077
for heat treating parts on rollout shelves

-maximum operating temperature: 850°F
-workspace dimensions: 72" wide x 78" deep x 78" high
-100 KW installed in Incoloy sheathed tubular heating elements
-10,000 CFM, 71/2-HP recirculating blower providing combination airflow
-8" thick insulated walls comprised of 2" of 1900°F block and 6" of 10 lb/cf density rockwool
-top mounted heat chamber
-inner and outer door gaskets; inner gasket seals directly against door plug; outer gasket seals against front face of oven
-doors equipped with expansion joints on inner face to guarantee uniform sealing at all temperatures
-aluminized steel interior and exterior
-three (3) rollout shelves, 60" wide x 72" long rated 400 lbs. loading each
-digital programming and recording temperature controller
-manual reset excess temperature controller with separate contactors
-recirculating blower air flow safety switch
-SCR power controller