Class 100 Truck Ovens

BULLETIN WI-462   CLASS 100 CLEAN ROOM HORIZONTAL AIR FLOW TRUCK OVENS

For truck processing where eliminating particle contamination is required. Applications include sterilization, depyrogenation, curing and drying. 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.

Standard Features Specifications Standard Equipment Additional Equipment

MODEL TLA-500 WITH OPTIONAL PROGRAMMABLE RECORDING TEMPERATURE CONTROLLER, STAINLESS STEEL EXTERIOR, DOOR LOCK, FRESH AIR AND EXHAUST FILTERS, PRESSURIZING BLOWER, PRESSURE GAUGES, TRUCK AND TRANFER DOLLY

STANDARD FEATURES  Back to Top

• UL LISTED CONTROL PANEL
• Standard Class 100 Truck Ovens from Grieve meet the requirements of National Fire Protection Association Standard 86, Industrial Risk Insurers, Factory Mutual and OSHA standards. For some applications, such as those involving flammable solvents or hazardous locations, the above organizations require additional safety devices.

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


• Safety Equipment
  —Adjustable, thermocouple actuated, manual reset excess temperature controller
  —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
  —D.O.P. test port upstream of HEPA filters
  —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  Back to Top

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 patented 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.

Circulation Diagram ( Front View ) Heated air is forced through HEPA filters prior to entering work space and then passes between truck shelves and across parts.

ADDITIONAL EQUIPMENT AVAILABLE  Back to Top See Bulletin TC-960 for modifications and other optional equipment.

• Programmable Temperature Controller, microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller
  Option PTC3



• Recording Thermometer, thermocouple actuated, 24-hour, 10" diameter circular chart used in conjunction with standard controller
  Option RT



• Programmable Recording Temperature Controller, microprocessor based, thermocouple actuated, digital display, 24-hour, 10" diameter circular chart, in lieu of standard controller
  Option PRTC3



• Digital Timing System, incorporated into standard temperature controller, 99 hour 59 minute range, starts timing when temperature reaches set point and shuts down oven at end of set time
  Option DTS3



• Shut Down Timer, with continuous "hold" feature; 1, 5, 10 or 30 hour range
  Option SDT



• Batch Timer, for uniformly timing batch operations. Continuous alarm with door interlock; alarms at end of preset time period until door is opened or timer reset; 1, 5, 10 or 30 hour range
  Option BT



• Automatic Door Switch, turns off blower and heat when door is opened. Restores blower and heat when door is closed
  Option ADS



• Stainless Steel Exterior, type 304 with #4 brushed finish, in lieu of white epoxy painted aluminized steel
  Option SSE



• Automatic Door Lock, solenoid operated, interlocked with oven temperature, optional programmable temperature controller or optional digital timing system.
  Option ADL



• Pass Through Construction, includes additional door on rear of oven and stainless steel flange to seal oven in factory wall
  Option PTC



• Polished Front Welded Interior Seams, including 1/2" radius inside corners, in lieu of back-welded seams
  Option PS



• HEPA Fresh Air Filter, 24" x 24" 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 HFA

• HEPA Exhaust Filter, 24" x 24" 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 HEF

• 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 PG

• Pressurizing Blower, installed in conjunction with HEPA fresh air filter to maintain positive pressure within the oven, 130 CFM capacity
  Option PB

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