Originally titled '500°F Cleanroom Oven Dries Precision Parts'
No. 922 is an electrically heated 500°F (~260°C) cleanroom cabinet oven from Grieve, currently used for drying precision parts in baskets at the customer’s facility. 30KW are installed in Incoloy sheathed tubular heating elements to heat the load. Workspace dimensions are 36”wide × 36” deep × 51” high.
The unit has 4” insulated walls, aluminized steel exterior, type 304, 2B finish stainless steel interior with continuously backwelded seams, while the exterior is finished in white epoxy paint with a #4 brushed finish stainless steel door cover and control panel face. The oven is also equipped with double doors and positive latching door hardware.
A 1,500 cfm, 2-hp recirculating blower provides horizontal airflow to the oven and two 30” × 24” × 6” thick stainless steel high temperature HEPA recirculating filters further purify the air. The ductwork is easily removable to expose filters for inspection or replacement.
Controls onboard No. 922 include a digital indicating temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch and solid state contactors.