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High Temperature
Universal Ovens

BULLETIN
CA-360

1000°F AND 1250°F
FRONT-TO-BACK
HORIZONTAL AIR FLOW
UNIVERSAL OVENS


 

Front-to-back horizontal air flow accommodates virtually any oven loading without restricting air passage. Work can be shelf loaded or placed directly on the optional reinforced work space bottom. Four sizes from 8 to 36 cubic feet. Designed for annealing, sintering, hardening or any other application where a dependable source of heated air up to 1250°F is required.

STANDARD FEATURES Back to Top
UL LISTED CONTROL PANEL
Standard Universal 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
— Motor control push buttons
— 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


Construction
—Front-to-back horizontal air flow
—16 gauge 304 stainless steel interior
—Aluminized steel exterior with enamel finish
—Brushed stainless steel control panel face
—Explosion venting latches
—All welded construction
Insulated with 2" thick 1900°F insulating block, backed up with 10 lbs/cf
    density rockwool

—Built-in baffles prevent radiant heat
High temperature inner and outer door gaskets with stainless steel spring
    insert

—Two (2) stainless steel shelves
—Channel shelf supports prevent shelves tipping
—Adjustable fresh air intake and exhaust dampers
—High pressure recirculating blower
—1 year limited warranty



Every oven fully assembled and individually factory tested

 

   
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 NON-STANDARD SAFETY EQUIPMENT MUST BE ADDED. SEE BULLETIN TC-940 AND CONSULT FACTORY.
Model
Workspace
Outside
Dimensions*
(WxDxH)
Max
Temp
Blower
Insu-
lation
Doors
kW
Operating Characteristics†
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
CFM HP Control
Accuracy
Oven
Uniformity
Rise Time
AA-1050 24" x 24" x 24" 8 51" x 60" x 45.5" 1050°F 600 1/2 10" Single 12 ±0.3% ±10°F 86 min 2275 lbs
AA-1250 24" x 24" x 24" 8 55" x 64" x 49.5" 1250°F 1000 3/4 12" Single 18 ±0.3% ±13°F 88 min 2705 lbs
AF-1050 24" x 36" x 24" 12 51" x 72" x 45.5" 1050°F 1000 3/4 10" Single 12 ±0.3% ±10°F 94 min 2580 lbs
AF-1250 24" x 36" x 24" 12 55" x 76" x 49.5" 1250°F 1200 1 12" Single 18 ±0.3% ±13°F 96 min 3085 lbs
AB-1050 36" x 36" x 36" 27 63" x 70" x 57.5" 1050°F 1000 3/4 10" Double 18 ±0.3% ±10°F 100 min 3265 lbs
AB-1250 36" x 36" x 36" 27 67" x 74" x 61.5" 1250°F 1200 1 12" Double 24 ±0.3% ±13°F 112 min 4030 lbs
AG-1050 36" x 48" x 36" 36 63" x 82" x 57.5" 1050°F 1200 1 10" Double 24 ±0.3% ±10°F 113 min 4095 lbs
AG-1250 36" x 48" x 36" 36 67" x 86" x61.5" 1250°F 1400 1 1/2 12" Double 30 ±0.3% ±13°F 125 min 4535 lbs
*All Models— Control panel overhang 9" right side. Blower motor overhang 17" rear
.
†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. See Bulletin TC-920 for additional details.
STANDARD EQUIPMENT   Back to Top
All Models
— 208 volts, 3-phase, 60 Hz
— 230 volts, 3-phase, 60 Hz
— 460 volts, 3-phase, 60 Hz
— Other electrical characteristics available

Each features completely wired, top 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. Exhaust outlet 4" diameter.

Incoloy sheathed tubular heating elements on all models. The 1250°F models have a heat chamber high limit controller.

Two (2) reinforced 100 lbs uniformly distributed load capacity 304 stainless steel expanded metal shelves. Trilite Green enamel painted aluminized steel exterior. Insulated with 2" of 1900°F insulating block backed up with 1250°F industrial rockwool.


 

 

Door seal utilizing inner and outer door gaskets. The inner gasket seals directly against the door plug; the outer gasket seals directly against the front face of the oven. This design greatly reduces the amount of heat transferred through the throat
area and helps keep the front face of the oven cool.


AA and AF Series
Provides 8 cubic feet and 12 cubic feet of work space respectively. The AF Series is 12" deeper than the AA Series to handle more or longer parts. Temperature ranges to 1050°F and 1250°F. Accommodates seven(7) shelves on 3" centers.


AB and AG Series
Our larger Universal ovens with work space of 27 cubic feet and 36 cubic feet respectively. The AG Series is 12" deeper than the AB Series to accommodate longer parts and bigger batches. Temperature ranges to 1050°F and 1250°F. Accommodates five(5) shelves on 6" centers.

Circulation Diagrams
(Front View)

With virtually and method of work load placement, the front-to-back horizontal air flow pattern completely surrounds work with heated air and permits free air passage throughout the work space for uniform processing.

 






 


Removable Oven Stand, with 1/8" steel plate shelf. 24" high on AA & AF Series, 16" high on AB & AG Series; specify oven model when ordering
Option RSTND
  

500 lbs Capacity Carbon Steel Subway Grating, oven work space bottom. Reduces work space height by 1". Specify oven model when ordering.
Option SUB
 

Roof Mounted Powered Forced Exhausters
with exhauster air flow safety switch†


Capacity HP Outlet
Diameter
Height
130 CFM 1/3 4" 20"
325 CFM 1/3 6" 23"
†Ovens may require additional heat input.

 
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


  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 DTS3



Digital Shut Down Timer, with continuous "hold" feature
Option SDT


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 BT


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

 
Integral Oven Legs, with 1/8" steel plate shelf. 24" high on AA & AF Series, 16" high on AB & AG Series; specify oven model when ordering
Option ISTND
 
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