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Top-Loading Ovens

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Top-Loading Ovens

For annealing, preheating, baking or any other heat processing where overhead handling equipment is used. Full opening door exposes entire work space for easy loading.  Ideal for severe service applications — load capacities up to 4000 lbs .

Top-Loading Ovens Model Specifications:

CAUTION:  Ovens processing combustible material are required by National Fire Protection Association 86 Standard for Ovens and Furnaces (NFPA 86) to have a fire suppression system.  If flammable solvents or vapors are present in an oven, OSHA requires conformance with NFPA 86 Class A Oven requirements.  A powered forced exhauster and other non-standard safety equipment must be added.  See Class A Oven Equipment for Solvent Processing resource page, reference our FAQs or our contact us us for more information.

Model Workspace Outside Dimensions*(WxDxH) Max Temp Blower Heat Input Insulation Thickness Operating Characteristics† Approx Shipping Weight
Dimensions(WxDxH) VolumeCu Ft CFM HP ElectricKW GasBTU/HR Control Accuracy Temperature Uniformity Rise Time (Electric) Rise Time (Gas)
LA-550 36" x 36" x 36" 27 59" x 87" x 52" 550°F 1,500 1 ½ 15 132,000 6" ±0.3% ±6°F 38 24 2,280 lbs
LA-700 36" x 36" x 36" 27 61" x 89" x 54" 700°F 2,000 2 20 200,000 7" ±0.3% ±8°F 44 26 2,795 lbs
LA-850 36" x 36" x 36" 27 63" x 93" x 56" 850°F 3,000 2 30 350,000 8" ±0.3% ±10°F 57 27 4,120 lbs
LA-1050 36" x 36" x 36" 27 69" x 97" x 60" 1,050°F 4,000 3 40 350,000 10" ±0.3% ±12°F 60 33 5,865 lbs
LB-550 72" x 36" x 36" 54 121" x 59" x 52" 550°F 2,450 1 ½ 30 350,000 6" ±0.3% ±6°F 30 22 4,665 lbs
LB-700 72" x 36" x 36" 54 123" x 61" x 54" 700°F 3,300 2 40 350,000 7" ±0.3% ±8°F 35 19 5,585 lbs
LB-850 72" x 36" x 36" 54 127" x 65" x 56" 850°F 4,000 3 60 400,000 8" ±0.3% ±10°F 47 26 7,320 lbs
LB-1050 72" x 36" x 36" 54 131" x 71" x 60" 1,050°F 5,000 5 80 600,000 10" ±0.3% ±12°F 52 24 8,475 lbs
LC-550 48" x 48" x 48" 64 71" x 99" x 64" 550°F 2,450 1 ½ 30 350,000 6" ±0.3% ±6°F 35 18 4,995 lbs
LC-700 48" x 48" x 48" 64 73" x 101" x 66" 700°F 3,300 2 40 350,000 7" ±0.3% ±8°F 40 20 5,915 lbs
LC-850 48" x 48" x 48" 64 77" x 105" x 68" 850°F 4,000 3 60 400,000 8" ±0.3% ±10°F 52 28 7,855 lbs
LC-1050 48" x 48" x 48" 64 83" x 109" x 72" 1,050°F 5,000 5 80 600,000 10" ±0.3% ±12°F 57 26 9,005 lbs
LD-550 96" x 48" x 48" 128 145" x 73" x 64" 550°F 4,200 3 60 400,000 6" ±0.3% ±6°F 24 14 7,445 lbs
LD-700 96" x 48" x 48" 128 147" x 77" x 66" 700°F 6,000 5 80 600,000 7" ±0.3% ±8°F 27 16 8,880 lbs
LD-850 96" x 48" x 48" 128 159" x 83" x 68" 850°F 7,800 5 100 700,000 8" ±0.3% ±10°F 46 25 11,660 lbs
LD-1050 96" x 48" x 48" 128 163" x 91" x 72" 1,050°F 10,000 7 ½ 120 800,000 10" ±0.3% ±12°F 52 30 14,740 lbs

* Outside Dimensions

  • All Models: Control panel overhang 9″ right side.
  • LA & LC Models: Blower motor overhang 19″at rear.
  • LB& LD Models: Blower motor overhang 19″at right side (26″ on 7-1/2 HP).
  • LA & LC Models: Additional height with door open 58″.
  • LB& LD Models: Additional height with door open 70″.
  • Gas Models: Burner overhang 15″ left side; LA & LC Models right side; LA & LC Models rear.

† Operating Characteristics

  • Accuracy as percent of controller span.
  • Uniformity at 100°F below maximum temperature.
  • Rise Time in minutes to 100°F below maximum temperature.
  • Tests run with empty oven and minimum exhaust.
  • Performance will vary with load and application.

Top-Loading Ovens Model Details:

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Specifications for Top-Loading Ovens

MODEL LB-700
MAXIMUM OPERATING TEMP 700°F
AIR FLOW Front to Back
CONTROL ACCURACY ±0.3%
OVEN UNIFORMITY ±8°F
RISE TIME - ELECTRIC 35 mins
RISE TIME - GAS 19mins
WORKS SPACE DIMENSIONS (WxDxH) 72" x 36" x 36"
SHELVES INCLUDED
NUMBER OF SHELVES MAX
SHELF CAPACITY Not Available
MAX LOAD CAPACITY Not Available
DOORS Manual
LOADING METHOD Top
APPROXIMATE SHIP WEIGHT 5585 lbs
OUTSIDE DIMENSIONS (WxDxH) 123" x 61" x 54"
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Standard Features for Top-Loading Ovens

Certifications
  • UL Listed Control Panel
  • Meets the Requirements of the Following Standards:
    • NFPA 86 (Standard for Ovens and Furnaces)
    • NFPA 70 (National Electric Code)
    • FM (Factory Mutual)
    • OSHA
  • Caution:
    • When processing combustible material fire protection should be considered
    • Not for use with flammable solvents or vapors. Other models available for these applications. For more information see Class A Solvent Processing page at this website
Safety Equipment
  • Adjustable manual reset excess temperature interlock to turn off heat on malfunction of main temperature controller
  • Recirculating blower air flow safety switch to turn off heat on loss of recirculated air flow
  • Electrical interlock shuts off heat if power to recirculating blower is interrupted
  • Electric Heat Includes
    • Separate heating element control contactors to turn off heat on malfunction of main control contactors
  • Gas Heat Includes
    • Modulating burner for 1000 BTU per cubic foot natural gas at 6” water column pressure – propane available. Inlet 1” NPT (1-¼ “ NPT above 350,000 BTU/hr input)
    • Automatic pre-ignition purge period to clear accumulated gas or fumes
    • Push button electric ignition
    • Microprocessor based electronic flame safeguard protection to continuously monitor flame and close gas valves if flame is not present
    • 325 CFM (650 CFM at 800,000 BUT/hr input) powered forced exhauster to provide combustion venting
    • Exhauster air flow safety switch to close gas valves on loss of venting
    • Two pilot valves to guarantee gas flow to pilot can be stopped
    • High and Low gas pressure switches to confirm safe operating pressure range
    • Two main burner safety shut off valves with valve seat position indicator to assure gas flow to main burner can be stopped
    • Proof of closure switch on one main valve to prevent igniting pilot unless main valve is closed
    • Leak test station at each pilot and main burner valve to allow testing for leakage through valve
Controls
  • Digital temperature controller
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)
Construction
  • Choice of
    • Electric or Gas heat
    • 208 volt, 230 volt or 460 volt, 3-phase, 60 HZ – other input power available
  • Air operated, heavy duty door supported by steel shaft and bearings
  • ¼” steel plate top prevents loading damage
  • Wear bars at sides of work space to protect walls and duct work
  • Reinforced floor with removable grate to distribute loading across floor
  • All welded construction
  • Durable, electrically isolated, Incoloy tubular heating elements
  • Heat source located in heat chamber to prevent radiant heating
  • High pressure recirculating blower
  • Full coverage supply and return duct work with adjustable opposed louvers
  • Adjustable fresh air intake and 4” diameter (6” on Gas Heat) exhaust outlet damper
  • Insulated with 10 lbs per cubic foot density rockwool insulation
  • Aluminized steel interior
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • Aluminized steel exterior with Trilite Green enamel finish
  • 1050⁰F models include 2” refractory ceramic fiber insulation on 16 gauge aluminized steel interior walls, 16 gauge 304 stainless steel heat chamber walls and stainless steel recirculating blower
  • Brushed stainless steel control panel face
  • Fully assembled and factory tested for temperature uniformity
  • 1 year limited warranty

Modifications & Accessories for Top-Loading Ovens

  • Programmable Temperature Controller

    Oven modification adding a programmable Temperature Controller. Microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.

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  • Digital Timing Temperature Controller

    Modification adding a Digital Timing Temperature Controller. Microprocessor based, incorporates 99 hour 59 minute timer, starts timing temperature reaches set point and shuts down oven at end of set time.

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  • Recording Thermometer

    Accessory adding a Recording Thermometer. Thermocouple actuated, 10″ diameter circular chart, 24 hour chart rotation.

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  • SCR Power Controller

    Electrical modification adding an SCR Power Controller. Silicon controlled rectifier power controller in lieu of mechanical heating element contactors, minimizes maintenance, reduces heating element fatigue.

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  • Digital Shut Down Timer

    Accessory adding a Digital Shut Down Timer. Shuts down oven, selectable range, continuous “hold” feature.

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  • Install Customer Supplied Temperature Controller

    Modification installing a customer supplied temperature controller in lieu of standard controller.

    Add to quote
  • Digital Batch Timer

    Oven modification adding a Digital Batch Timer. Uniformly timing batch operations, continuous alarm with door interlock, alarm sounds at end of preset time until door is opened or timer reset.

    Add to quote
  • Supply Oven Without Controller

    Supply without temperature controller. Supply cutout, thermocouple, and wires only. Customer to supply and install temperature controller.

    Add to quote
  • Program Timer

    Oven modification adding a programmable 24 hour, 7 day timer.

    Add to quote

Custom Ovens

Custom ovens and furnaces tailored to your specific worksite and requirements

No two worksites are alike. That means your oven or furnace needs to be built to your exact specifications. Sometimes that will be an oven in our catalog. Otherwise, we will specially design for your application.

Custom Oven and furnace Info

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Industrial Equipment Made to Order

Your business has specific needs. We’ll make them work. We’ll build your custom oven or furnace to last for the long haul. Let’s talk.

Contact Us About Your equipment Needs