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Universal Ovens

BULLETIN
CA-350

FRONT-TO-BACK
HORIZONTAL AIR FLOW
UNIVERSAL BATCH 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 baking, drying, preheating or any other application where a dependable source of heated air up to 850°F is required.

STANDARD FEATURES Back to Top
• UL LISTED CONTROL PANEL
• Standard Universal Batch 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
—304 stainless steel interior
—Aluminized steel exterior with enamel finish
—Brushed stainless steel control panel face
—Explosion venting latches
—All welded construction
—10 lbs/cf density industrial rockwool insulation
—Built-in baffles prevent radiant heat
—Silicone rubber door gasket on 550°F models only
—High temperature door gasket with stainless steel spring insert on 700°F and 850°F models
—Two (2) nickel plated wire 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: UNIVERSAL BATCH 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 A UNIVERSAL BATCH OVEN, OSHA REQUIRES CONFORMANCE WITH NFPA 86 WHICH DEFINES UNIVERSAL BATCH 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-550 24" x 24" x 24" 8 40" x 50" x 36 ½"" 550°F 400 1/3 6" Single 5 ±0.3% ±5°F 35 min 965 lbs 
AA-700 24" x 24" x 24" 8 44" x 56" x 40 ½" 700°F 400 1/3 8" Single 7 ±0.3% ±6°F 45 min 1140 lbs 
AA-850 24" x 24" x 24" 8 44" x 56" x 40 ½" 850°F 400 1/3 8" Single 9 ±0.3% ±8°F 60 min 1170 lbs 
AF-550 24" x 36" x 24" 12 40" x 62" x 36 ½" 550°F 400 1/3 6" Single 5 ±0.3% ±5°F 51 min 1155 lbs 
AF-700 24" x 36" x 24" 12 44" x 68" x 40 ½" 700°F 400 1/3 8" Single 7 ±0.3% ±6°F 66 min 1355 lbs
AF-850 24" x 36" x 24" 12 44" x 68" x 40 ½" 850°F 400 1/3 8 Single 9 ±0.3% ±8°F 88 min 1365 lbs
AB-550 36" x 36" x 36" 27 52" x 62" x 48 ½" 550°F 600 1/2 6" Single 7 ±0.3% ±5°F 61 min 1490 lbs
AB-700 36" x 36" x 36" 27 56" x 66" x 52 ½" 700°F 600 1/2 8" Single 9 ±0.3% ±6°F 70 min 1850 lbs
AB-850 36" x 36" x 36" 27 56" x 66" x 52 ½" 850°F 600 1/2 8" Single 12 ±0.3% ±8°F 83 min 1880 lbs
AG-550 36" x 48" x 36" 36 52" x 74" x 48 ½" 550°F 600 1/2 6" Single 9 ±0.3% ±5°F 82 min 1865 lbs
AG-700 36" x 48" x 36" 36 56" x 78" x 52 ½" 700°F 600 1/2 8" Single 12 ±0.3% ±6°F 93 min 2230 lbs
AG-850 36" x 48" x 36" 36 56" x 78" x 52 ½" 850°F 600 1/2 8" Single 18 ±0.3% ±8°F 110 min 2260 lbs
*All Models— Control panel overhang 9" right side. Blower motor overhang 10" rear
. 		†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
• 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. Incoloy sheathed tubular heating elements. Exhaust outlet 4" diameter.

Two (2) reinforced 100 lbs uniformly distributed load capacity, nickel plated wire shelves; 304 stainless steel interior with carbon steel blower and plated hardware. Trilite Green enamel painted aluminized steel exterior.

 

 


 • 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 500°F, 650°F and 850°F. Accommodates seven(7) shelves on 3" centers.


 • AB and AG Series
Our larger Universal batch 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 500°F, 650°F and 850°F.
Accommodates five(5) shelves on 6" centers.

Circulation Diagrams
(Top 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.

 





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

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

•Double Doors, in lieu of single door.
AB & AG Series only
Option DD 

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

Capacity HP Outlet
Diameter		 Height
80 CFM‡ 1/8 4" 16"
130 CFM 1/3 4" 20"
325 CFM 1/3 6" 23"
†Ovens may require additional heat input.
‡550°F Models only

 
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

• 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

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

• 24" Integral Oven Legs, with 1/8" steel plate shelf. Specify oven model when ordering.
Option ISTND 

•24" Removable Oven Stand, with 1/8" steel plate shelf. Specify oven model when ordering
Option RSTND 

• 304 Stainless Steel Components, including blower wheel, hardware and two stainless steel expanded metal shelves, specify oven model when ordering.
 
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Specifications Subject to Change Without Notice
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