No. 893 is an 850ºF, electrically-heated walk-in oven from Grieve, currently used for heat treating parts on rollout shelves at the customer’s facility. Workspace dimensions of this oven measure 54” W x 72” D x 78” H. 80KW are installed in Incoloy-sheathed tubular elements to heat the oven chamber, while a 6000 CFM, 5-HP recirculating blower provides combination airflow to the workload.
This Grieve oven has 8” insulated walls comprising 2” of 1900ºF block and 6” of 10 lb/cf density rockwool insulation, plus an aluminized steel interior and exterior, top-mounted heat chamber and three rollout shelves, each 48” wide by 60” long and rated at 200 lbs.
Controls on No. 893 include a digital programming and recording temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, SCR power controller and fused disconnect switch.