350°F Clean Room Oven from Grieve

September 18, 2019

No. 1048 is a 350°F (177°C), clean room oven from Grieve, currently used for final cure of hardcoated optical lenses. Workspace dimensions of this oven measure 54” wide x 63” deep x 72” high. 60 KW are installed in Incoloy sheathed tubular heating elements, while a 6000 CFM, 5-HP recirculating blower provides horizontal airflow to the workload.

The Grieve clean room oven features 6” insulated walls, Type 304, 2B finish stainless steel interior with continuously backwelded seams, exterior finished with white epoxy paint and a #4 brushed finish stainless steel door cover. The oven is humidity controlled, including dew point sensor and steam humidifier.

Additional features include a motorized damper on exhaust for accelerated cooling, 24” x 24” x 6” thick HEPA fresh air filter with 2” prefilter, four (4) 30” x 24” x 12” thick HEPA recirculating filters with minihelic pressure gauges, an 8” x 10” double pane window, and and interior oven light. The oven includes all safety equipment for handling flammable solvents (including explosion venting door hardware and 325 CFM powered forced exhauster) and NFPA 79 electrical construction (including NEMA 12 control panel and rigid conduit.)

Controls on the No. 1048 include a digital programming temperature controller to control temperature and humidity, manual reset excess temperature interlock with separate contactors, SCR power controller, and circuit breaker disconnect switch.