Shelf OvensShelf Ovens

Shelf Ovens

  • Grieve - SA-400, SA-550, SB-400 and more
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)

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These compact ovens extend only 46 inches from a wall yet provide large work space at low cost. 


Ideal for shelf processing applications such as baking, drying, curing and preheating.

Outside Dimensions

  • Blower motor overhang 10″ right side

Operating Characteristics

  • 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

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
  • Processing flammable solvents or vapors requires forced exhaust to provide safety ventilation

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
  • 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 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

  • All welded construction
  • Durable, electrically isolated, Incoloy tubular heating elements
  • Heat source located in heat chamber to prevent radiant heating
  • High pressure carbon steel 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
  • Channel shelf supports prevent shelves tipping
  • Insulated with 10 lbs per cubic foot density rockwool insulation
  • 304 stainless steel interior with plated hardware
  • Aluminized steel exterior with Trilite Green enamel finish
  • Brushed stainless steel control panel face
  • Heavy duty doors with explosion venting latches
  • Silicone rubber door gasket
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • Fully assembled and factory tested for temperature uniformity



***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.

MODELWORKSPACEOUTSIDE DIMENSIONS*(WXDXH)MAX TEMPBLOWERHEAT INPUTINSULATION THICKNESSOPERATING CHARACTERISTICS†APPROX SHIPPING WEIGHT
DIMENSIONS(WXDXH)VOLUMECU FTCFMHPELECTRICKWGASBTU/HRCONTROL ACCURACYTEMPERATURE UNIFORMITYRISE TIME (ELECTRIC)RISE TIME (GAS)
SA-40050" x 30" x 54"46.970" x 46" x 80"400°F1,000110132,0006"±0.3%±4°F35201,675 lbs
SA-55050" x 30" x 54"46.970" x 46" x 80"550°F1,000115132,0006"±0.3%±6°F60301,875 lbs
SB-40056" x 30" x 60"58.376" x 46" x 86"400°F1,000115132,0006"±0.3%±4°F40151,875 lbs
SB-55056" x 30" x 60"58.376" x 46" x 86"550°F1,000120132,0006"±0.3%±6°F60252,085 lbs
SC-40068" x 30" x 66"77.988" x 46" x 92"400°F1,000120132,0006"±0.3%±4°F20102,650 lbs
SC-55068" x 30" x 66"77.988" x 46" x 92"550°F1,000125132,0006"±0.3%±6°F35202,760 lbs