High Temperature Cabinet OvensHigh Temperature Cabinet Ovens

High Temperature Cabinet Ovens

  • Grieve - HA-1050 ,HA-1250, HX-1050, HX-1250 and more
  • Heat chamber temperature controller on 1250⁰F models to limit heating element temperature
  • Motor control push buttons and on-off heat switch
  • LED pilot lights

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High temperature cabinet ovens are ruggedly built for long hard usage at elevated temperatures, offering a choice of two air flow patterns.


Outside Dimensions

  • Control panel overhang 9″ right side
  • Blower motor overhang 17″ (26″ HC Series); H Series right side, V Series rear
  • Electric model HX, HB, HZ, HY, HC—Heater terminal overhang 5″ rear and left side
  • Gas Model—Burner overhang 15″; H Series left side, V Series right side

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

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
  • Heat chamber temperature controller on 1250⁰F models to limit heating element temperature
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)

Construction

  • Choice of

* Recirculating air flow patterns – Horizontal or Vertical air flow

*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 stainless 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 2” of refractory ceramic fiber and 10 lbs per cubic foot density rockwool insulation
  • 16 gauge 304 stainless steel interior with stainless hardware
  • Aluminized steel exterior with Trilite Green enamel finish
  • Brushed stainless steel control panel face
  • Exceptionally heavy duty doors, hinges and door frame with explosion venting latches
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • Dual fiberglass door gasket with stainless steel spring insert; one gasket seals to inside door surface and second seals to outer oven face
  • 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)
HA-105020" x 20" x 20"4.648" x 45" x 60"1,050°F700½15132,00010"±0.3%±8°F58351,885 lbs
HA-125020" x 20" x 20"4.652" x 49" x 64"1,250°F1,000¾20200,00012"±0.3%±11°F66462,195 lbs
HX-105038" x 20" x 26"11.466" x 45" x 66"1,050°F1,000¾20200,00010"±0.3%±8°F66362,965 lbs
HX-125038" x 20" x 26"11.470" x 49" x 74"1,250°F1,200130200,00012"±0.3%±11°F67463,570 lbs
HB-105038" x 26" x 38"21.768" x 51" x 82"1,050°F1,6001 ½30200,00010"±0.3%±8°F51363,590 lbs
HB-125038" x 26" x 38"21.772" x 55" x 86"1,250°F1,6001 ½40200,00012"±0.3%±11°F69504,325 lbs
HZ-105038" x 26" x 50"28.668" x 51" x 94"1,050°F2,000240200,00010"±0.3%±8°F52393,740 lbs
HZ-125038" x 26" x 50"28.672" x 55" x 98"1,250°F2,000260350,00012"±0.3%±11°F65494,410 lbs
HY-105038" x 38" x 38"31.868" x 63" x 82"1,050°F2,000240200,00010"±0.3%±8°F54464,130 lbs
HY-125038" x 38" x 38"31.872" x 67" x 86"1,250°F2,000260350,00012"±0.3%±11°F60484,870 lbs
HC-105050" x 50" x 50"72.3100" x 77" x 106"1,050°F3,750380500,00010"±0.3%±8°F75467,590 lbs
HC-125050" x 50" x 50"72.3104" x 81" x 110"1,250°F4,2005120700,00012"±0.3%±11°F90489,140 lbs
VA-105026" x 26" x 38"14.946" x 66" x 73"1,050°F1,6001 ½24132,00010"±0.3%±9°F91663,245 lbs
VA-125026" x 26" x 38"14.950" x 70" x 77"1,250°F1,6001 ½30200,00012"±0.3%±12°F101734,010 lbs
VB-105026" x 38" x 50"28.646" x 78" x 85"1,050°F1,6001 ½30200,00010"±0.3%±9°F76533,810 lbs
VB-125026" x 38" x 50"28.650" x 82" x 89"1,250°F1,6001 ½40350,00012"±0.3%±12°F85654,650 lbs