Shelf Ovens

BULLETIN CA-420 LOW COST ELECTRIC AND GAS OVENS FOR CONVENIENT SHELF LOADING

These compact ovens extend only 42 inches from a wall yet provide large work space at low cost. Ideal for shelf processing applications such as baking, drying, curing and preheating at temperatures to 550°F.

Standard Features Specifications Standard Equipment Additional Equipment

MODEL SB-350 ELECTRIC WITH OPTIONAL PROGRAMMING TEMPERATURE CONTROLLER AND RECORDING THERMOMETER	MODEL SC-550 GAS WITH STANDARD MODULATING BURNER SYSTEM

STANDARD FEATURES  Back to Top

SPECIFICATIONS  Back to Top
CAUTION: OVENS PROCESSING COMBUSTIBLE MATERIAL ARE REQUIRED BY NATIONAL FIRE PROTECTION ASSOCIATION STANDARD 86 TO HAVE A FIRE SUPPRESSION SYSTEM. IF FLAMMABLE SOLVENTS OR VAPORS ARE PRESENT IN AN OVEN, OSHA REQUIRES CONFORMANCE WITH NFPA 86 WHICH DEFINES OVENS FOR THESE APPLICATIONS AS CLASS A OVENS. A POWERED FORCED EXHAUSTER AND OTHER NONSTANDARD SAFETY EQUIPMENT MUST BE ADDED. SEE BULLETIN TC-940 AND CONSULT FACTORY.

Model Work Space Outside Dimensions* (WxDxH) Max Temp Blower Insu- lation Doors Heat Input Operating Characteristics† Approx Shipping Weight Model Dimensions (WxDxH) Volume Cu Ft CFM HP KW BTU/HR Control Accuracy Oven Uniformity Rise Time Electric Gas SA-350 50" x 30" x 54" 46.9 66" x 42" x 76" 350°F 1000 1 4" Double 9 50,000 ±0.3% ±4°F 35 min 20 min 1400 lbs SA-350 SA-550 50" x 30" x 54" 46.9 66" x 42" x 76" 550°F 1000 1 4" Double 12 75,000 ±0.3% ±6°F 60 min 30 min 1600 lbs SA-550 SB-350 56" x 30" x 60" 58.3 72" x 42" x 82" 350°F 1000 1 4" Double 12 75,000 ±0.3% ±4°F 40 min 15 min 1570 lbs SB-350 SB-550 56" x 30" x 60" 58.3 72" x 42" x 82" 550°F 1000 1 4" Double 18 100,000 ±0.3% ±6°F 60 min 25 min 1780 lbs SB-550 SC-350 68" x 30" x 66" 77.9 84" x 42" x 88" 350°F 1000 1 4" Double 18 100,000 ±0.3% ±4°F 20 min 10 min 2290 lbs SC-350 SC-550 68" x 30" x 66" 77.9 84" x 42" x 88" 550°F 1000 1 4" Double 24 125,000 ±0.3% ±6°F 35 min 20 min 2400 lbs SC-550

*All Models—Control panel overhang 9" right side. Blower motor overhang 10" right side. Gas Model—Burner overhang 11" left side.

†Accuracy as percent of controller span. Uniformity at 50°F below maximum temperature. Rise Time in minutes to 50°F below maximum temperature. Tests run with empty oven and minimum exhaust. Performance will vary with load and application. See Bulletin TC-920 for additional details.

STANDARD EQUIPMENT  Back to Top

Electric Models
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 heating element contactors electrically interlocked to shut off heaters if power to blower is interrupted and to permit operation of blower without heat for cooling. Alloy wire heating elements. Exhaust outlet 4" diameter.

Gas Models
—1,000 BTU natural gas at 6" water column pressure, 1" NPT inlet
—Other gas characteristics available

Control panel as detailed above and safety devices as listed on the front of this bulletin. Automatic pre-ignition purge period and push button electric ignition contributes to ease of operation. Modulating gas burner is protected with electronic flame safety relay.

These electric or gas ovens come in three sizes. They feature full horizontal air with adjustable louvers for balanced air flow. These compact ovens extend only 42" from a wall (38" discounting door hardware) so they take up little room in situations where floor space is at a premium.

First shelf support channel is conveniently located at 23" above factory floor.

SA Series
Nearly 47 cubic feet of work space at temperatures to 350°F and 550°F respectively. Accommodates eight(8) shelves on 6" centers.

SB Series
Over 58 cubic feet of work space at temperatures to 350°F and 550°F respectively. Accommodates nine(9) shelves on 6" centers.

SC Series
Our largest Shelf oven with a work space of nearly 78 cubic feet. Temperature ranges to 350°F and 550°F respectively. Accommodates ten(10) shelves on 6" centers.

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

• Additional Shelves, 100 lbs distributed load per shelf, 400 lbs maximum oven load; specify oven model when ordering.
  


• 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



• 304 Stainless Steel Components, including blower wheel, hardware and two stainless steel expanded metal shelves, specify oven model when ordering.



• 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; 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 on electric models, blower only on gas models, when door is closed
  Option ADS



• Roof Mounted Powered Forced Exhausters†