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. Top mounted control panel minimizes
floor space required. Designed for annealing, sintering, hardening or any other
application where a dependable source of heated air up to 1250°F is required.
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
—Easy-to-see pilot lights
Safety Equipment
—Adjustable, thermocouple actuated, manual reset excess temperature controller
—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 stainless steel 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 NONSTANDARD SAFETY EQUIPMENT MUST BE ADDED. SEE BULLETIN
TC-940 AND CONSULT FACTORY.
†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
— 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 1000°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 1000°F and 1250°F.
Accommodates five(5)
shelves on 6" centers.
Circulation
Diagram (Top View)
With
virtually any 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.
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 (side mounted) Option RT
Programmable Recording
Temperature Controller, microprocessor based, thermocouple actuated,
digital display, 24-hour, 10" diameter circular chart, in lieu of standard
controller (side mounted) 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
Batch Timer, for
uniformly timing batch operations. Continuous alarm with door interlock; alarms
at end of preset time 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 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
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 Stainless
Steel Subway Grating, oven work space bottom. Reduces work space height
by 1"; specify oven model when ordering Option SUB
UL LISTED CONTROL
PANEL
