High Capacity Industrial Oven 500°F

High Capacity Industrial Oven 500°F

500°F Class 100

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These electrically heated ovens come in five sizes with features to provide a low particle count Class 100 atmosphere inside.

Operating temperatures to 500°F with work space volumes ranging from 57.8 to 163.6 cubic feet. Exterior construction minimizes particle generation. Heavy duty units equally suited for pharmaceutical or industrial applications.

Key Features


  • Digital, microprocessor based, thermocouple actuated, indicating temperature controller
  • Solid state heating element relay
  • Motor control push buttons and on-off heat switch
  • LED pilot lights

Safety Equipment

  • Adjustable, thermocouple actuated, manual reset excess temperature interlock
  • Separate heating element control contactors
  • Recirculating blower air flow safety switch

Class 100 Construction

  • Recirculation HEPA filter, stainless steel, high temperature, 99.97% efficient on 0.3 micron particles
  • Stainless steel recirculating blower
  • Silicone rubber blower shaft seal
  • Stainless steel interior — type 304, 2B finish
  • Continuously back-welded seams on oven interior
  • Easy to remove interior duct work for cleaning
  • Incoloy sheathed tubular heating elements
  • Test port upstream of HEPA filter
  • Positive latching door hardware
  • Silicone rubber door seal
  • Sealed penetrations for heaters and thermocouples
  • Adjustable fresh air inlet — optional HEPA filter with — prefilter available
  • Adjustable exhaust outlet — optional HEPA filter available
  • Insulated floor with removable truck wheel guides
  • Brushed stainless steel control panel face and door cover
  • Aluminized steel exterior with white epoxy paint — optional brushed stainless steel exterior available
  • 1 year limited warranty

Every oven fully assembled and individually factory tested

Standard Equipment

All Models

  • 208 volts, 3-phase, 60 Hz
  • 230 volts, 3-phase, 60 Hz
  • 460 volts, 3-phase, 60 Hz
  • Other electrical characteristics available

These Class 100 ovens come in five sizes and include insulated floors with removable truck wheel guide tracks. They feature full horizontal air flow and adjustable opposed louvers on full coverage supply and return duct work. Easily removable
interior duct work for cleaning.

Each features completely wired, side access UL listed control panel enclosing terminals for incoming power, temperature controllers, push buttons and pilot lights. Motor starter and solid state heating element relay electrically interlocked to shut off heaters if power to blower is interrupted and to permit operation of blower without heat for cooling. Incoloy sheathed tubular heating elements. Exhaust outlet 4" diameter.

Stainless steel (type 304, 2B finish) interior with continuously back-welded seams. Recirculated air flow is continuously passed through high temperature HEPA filters to remove particles. High temperature HEPA filters have stainless steel housing and are 99.97% efficient on 0.3 micron particles.

Mechanical enclosure covers recirculating blower motor, heating element terminal box, air flow safety switch and other components to provide continuous exterior surface for easy cleaning.

Outer door cover and control panel face constructed from #4 brushed finish, type 304 stainless steel. Aluminized steel exterior finished with white epoxy enamel paint.

Optional loading trucks hold nine(9) shelves on 6" vertical centers and are all welded stainless steel construction including stainless steel casters. Loading trucks are moved to and from oven on optional transfer dollies.

Additional Equipment Available

Companion Trucks and Shelves

Truck Shelf
(W x D)
1000 lbs

†Stainless steel shelves rated 100 lbs uniformly distributed.
‡Models TLD-500 and TLE-500 hold two trucks front to rear.

Option PTC3 - Programmable Temperature Controller,

microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller

Option RT - Recording Thermometer,

thermocouple actuated, 24-hour, 10" diameter circular chart used in conjunction with standard controller

Option DTS3 - Digital Timing Temperature Controller,

microprocessor based, digital indicating, incorperates 99 hour 59 minute timer. Starts timing when temperature reaches set point and shuts down oven at end of set time

Option SDT - Digital Shut Down Timer,

with continuous "hold" feature

Option BT - Digital Batch Timer,

for uniformly timing batch operations. Continuous alarm with door interlock; alarms at end of preset period until door is opened or timer reset

Option ADS - Automatic Door Switch,

turns off blower and heat when door is opened. Restores blower and heat when door is closed

Option SSE - Stainless Steel Exterior,

type 304 with #4 brushed finish, in lieu of white epoxy painted aluminized steel

Option ADL - Automatic Door Lock,

solenoid operated, interlocked with oven temperature, optional programmable temperature controller or optional digital timing system

Option PTC - Pass Through Construction,

includes additional door on rear of oven and stainless steel flange to seal oven in factory wall

Option PS - Polished Front Welded Interior Seams,

including 1/2" radius inside corners, in lieu of back-welded seams

Option HFA - HEPA Fresh Air Filter,

12" x 12" x 6", 99.97% efficient at 0.3 micron particle size, with 2" thick prefilter. Installed in stainless steel housing over the fresh air inlet on the right side of the oven inside the mechanical enclosure

Option HEF HEPA Exhaust Filter,

12" x 12" x 6", stainless steel high temperature, 99.97% efficient at 0.3 micron particle size. Installed in stainless steel housing over the exhaust outlet on the top of the oven. Adds 15" to overall oven height

Option PG - Pressure Gauge,

0-2" water column static pressure gauge, installed across either recirculation filter, fresh air filter or exhaust filter, to measure pressure drop across filter. For use in determining when filters require replacement

Option PB - Pressurizing Blower,

installed in conjunction with HEPA fresh air filter to maintain positive pressure within the oven, 50 CFM capacity

ModelWork SpaceOutside
BlowerRecirculation HEPA FilterInsu-
DoorsKWOperating Characteristics†Approx
Cu Ft
Rise Time
TLA-50036" x 42" x 66"57.891" x 59" x 107"500°F24003230" x 12" x 24"6"Single30±0.3%±5°F45 min3005 lbs
TLB-50042" x 42" x 66"67.497" x 59" x 107"500°F24003230" x 12" x 24"6"Single40±0.3%±5°F40 min3175 lbs
TLC-50042" x 54" x 66"86.698" x 71" x 107"500°F38005424" x 12" x 24"6"Single45±0.3%±5°F40 min3585 lbs
TLD-50042" x 78" x 66"125.198" x 94" x 107"500°F55005430" x 12" x 24"6"Single60±0.3%±5°F35 min4325 lbs
TLE-50042" x 102" x 66"163.698" x 119" x 107"500°F72007 1/2630" x 12" x 24"6"Single80±0.3%±5°F35 min5120 lbs