Grieve’s No. 853 500°F electrically-heated belt conveyor oven measures 30 × 96 × 24 and features a 2-ft open-belt loading zone, 8-ft insulated heat zone with recirculated airflow and 2 ½-ft open-belt unloading zone. Heat is provided by 48-kw in Nichrome wire heating elements, while a 4,200-cfm, 3-hp recirculating blower furnishes vertical downward airflow to the load.
The oven features 4-inch insulated walls; a Type 304, 2B-finish stainless steel interior; a stainless steel exterior with #4 brush finish; and a 24-inch-wide, 1 × 1-inch Type 304 stainless steel flat wire conveyor belt with ¼-hp motor drive enabling variable speed from 0.9 to 17.6 ipm.
Safety and control equipment includes PVC electrical conduit, a remote-control panel, 325-cfm stainless steel power-forced exhauster, six-point thermocouple jack panel through the oven wall, digital indicating temperature controller, manual reset excess temperature controller with separate contactors, and recirculating blower airflow safety switch.