No. 868 is a 500°F (260°C) special top-loading oven from Grieve, currently used for testing oil field downhole equipment. Workspace dimensions of this oven measure 185″ wide x 18″ deep x 24″ high. The oven features 34.8 KW installed in Nichrome wire heating elements, while 4000 CFM total from two 2-HP recirculating blowers provide horizontal front-to-rear airflow.
This Grieve special top-loading oven features 4″ insulated walls, aluminized steel interior and exterior, reinforced 1/4″ steel plate workspace floor designed to hold 3600 lbs. distributed load, and a motor-operated door. The oven is supported on six swivel casters with swivel locks and brakes.
Controls on No. 868 include a digital indicating temperature controller, a manual reset excess temperature controller with separate contactors, and a recirculating blower airflow safety switch.