PHOTOGRAPH 939

HEAVY DUTY BOX FURNACE , Serial No. 700050
for preheating prior to forging

-maximum operating temperature: 2000F
-workspace dimensions: 72" wide x 36" deep x 18" high
-700,000 BTU/HR installed in two (2) modulating natural gas burners with floor mounted combustion air blower
-7" insulated walls comprised of 5" of 2300F ceramic fiber and 2" of 1700F ceramic fiber; 7" floor insulation comprised of 4-1/2" of 2300F firebrick and 2-1/2" of 1900F block insulation
-firebrick plate hearth supported by firebrick piers
-manual operated vertical lift door
-digital indicating temperature controller
-manual reset excess temperature controller with separate contactors
-fused disconnect switch