ACCESSORIES

All furnaces & ovens are equipped with a Honeywell digital temperature controller and are completely wired, ready for connection to main power supply.  Some models may require assembly of vertical lift doors, hearth plates and/or atmosphere equipment.  Following are optional accessories to enhance your furnace operation.

Controllers/Instrumentation

• Overtemp System – Safety system complete with a high limit digital controller, separate magnetic contactor and thermocouple assembly for automatic furnace shutdown in the event of a high temperature excursion.  Recommended by NFPA Code 86C for unattended furnace operation. 
• Fusible Disconnect Switch – Fusible disconnect switch wired and mounted on furnace required by OSHA if means of disconnecting power is not located nearby. (Fuses not included.)
• Input Timer – Timer proportions power to heating elements reducing kilowatt hours permitting lower operating temperatures.
• Seven Day Timers - Automatic furnace start up or shutdown at a preset time with weekend omitting feature.
• Soak Timers - Digital soak timers which begin timing when the operating temperature is reached.
• Program Controllers - (in lieu of standard single setpoint controller) Instruments which stores profiles for ramping and soaking at varying rates and durations during the heating cycle.
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• Cascade Controllers - An instrument which accurately controls the setpoint inside the retort of atmosphere (AM) models.
• Pen Recorders - Circular or strip chart pen recording instruments which provide a hard copy print out of the heat cycle.
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• Control Panels - (in lieu of standard furnace-mounted panel) Freestanding NEMA 1 or 12 panel to house all instrumentation & power controls for isolation from furnace.

Atmosphere Equipment

• Flowmeter - Adjusts the flow of atmosphere (CFM) entering the furnace. Mounted on side of furnace, ready for connection to atmosphere supply.
• Regulator - Reduces atmosphere pressure from high pressure tanks to low pressure suitable for connection to atmosphere inlet.
• Muffle Thermocouple - A thermocouple to indicate the temperature inside a retort.
• Inert Door Curtain - A pipe strip mounted below the furnace door opening providing a vertical stream of atmosphere to minimize disruption of the chamber environment.
• Atmosphere Safety System - Required by NFPA code 86C for operation with flammable atmosphere.  System will automatically purge with inert gas upon loss of flammable atmosphere pressure, electrical failure or loss of temperature.
• Supervised Burn Off – For burning of flammable gasses exiting furnace.  Complete with pilot assembly, solenoid and low pressure switches.
• Supervised Flame Curtain – A strip curtain for operation with natural gas.  Complete with pilot assembly, solenoid & orifice.

Gloves, Tongs, Foil Wrap

• Heat Treat Foil – Stainless steel foil wrap to prevent scale during heat treating. Each roll is 24" W x 50' L. Select 2000°F or 2240°F.
  
• Gloves –  High tech insulating fabric to withstand 1800°F. Sold as  a pair. Available in 11", 14", 18" & 23" length.   (23" rated to 1000°F)
   
• Tongs – Heavy duty steel tongs to load & move hot objects.   Available in 18", 24" and 36" lengths.
  

Door Arrangements

• Manual Vertical Lift  - Handcrank operated with sprockets, chain and counterweight to raise/lower vertically keeping hot face door surface away from operator.
• Air Operated Vertical Lift - Air cylinder operated via a  foot treadle with sprockets, chain and counterweight to raise/lower door keeping hotface door surface away from operator.
• Double Pivot - Horizontal swing with a double pivot action to rotate hotface door surface away from the operator.

Quench Tanks

• Available in mild steel or stainless steel shell construction depending on quench medium.  Options include casters, mixers and heaters.

Other

• Floor Stand - Angle iron frame to support single chamber models. 
• Wire Racks - Lucifer Furnaces recommends Cooley Wire Products