Lindberg/Blue M* Box Furnaces

. Double-wall construction with Moldatherm* insulation for rapid heat-up and cool-down, energy efficiency and cooler exterior surface temperatures.
. Silicon carbide heating elements for long-life, safety and reliable service with maximum energy savings
. Safety door switch interrupts power to heating elements when door is opened; protects elements and minimizes exposure to operator
. Moldatherm* hearthplate supports load and protects interior from spillage and mishandling. Type R Thermocouple is integrated into chamber backwall
Digital, 4-Segment Programmable Controller
. Microprocessor-based PID control, four segment, 1 program with 2 ramps (up and down) and 2 dwells (timed holds)
. Adjustable high limit overtemperature protection. Simultaneous LED display of actual temperature vs. setpoint in either °C or °F
Digital 16 Segment Programmable Controller
. Microprocessor-based PID control, 16 segments, 4 programs with 8 ramps (up and down) and 8 dwells (timed holds) each
. Adjustable high limit overtemperature protection
. Simultaneous digital LED display of actual temperature vs. setpoint in either °C or °F
Option B Overtemperature Control (OTC)
. Adjustable digital overtemperature control, protects furnace and load in the event of primary control circuit failure available on selected models with B designation
. Overrides main controller, assumes temperature control and shuts off power to furnace if high limit is reached
. Manual re-set required for safety
. Operates via magnetic contacts through signal from independent thermocouple