No. 813 is a gas-heated 500°F (260°C) walk-in oven from Grieve, currently used for curing printed circuit boards. 350,000 BTU/HR are installed in a modulating natural gas burner that fires into an alloy radiant tube. Workspace dimensions are 48″ wide x 48″ deep x 72″ high.
The unit has 4″ insulated walls and an aluminized steel interior and exterior. A 3300 CFM, 2-HP recirculating blower provides horizontal airflow to the oven. Safety equipment, such as a 325 CFM 1/3 HP powered forced exhauster is included as required by the IRI, FM and the National Fire Protection Association Standard 86 for gas-fired equipment. The oven also features a 2″ insulated floor with truck wheel guide tracks and a removable top-mounted heat chamber.
Controls on No.813 include a recirculating airflow safety switch, circular chart recorder, digital temperature controller and a manual reset excess temperature controller.