High Temperature
Cabinet Ovens

BULLETIN
CA-410

1000°F AND 1250°F
HEAVY DUTY
ELECTRIC AND GAS
CABINET OVENS

 



These units, backed by years of experience, quality construction and precise engineering, provide exceptional temperature uniformity. Ruggedly built for long hard usage at elevated temperatures. A choice of two air flow patterns and seven sizes from 4.6 to 72 cubic feet.

STANDARD FEATURES Back to Top
• UL LISTED CONTROL PANEL
• Standard Cabinet 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
— Modulating burner on gas ovens
— Motor control push buttons and on-off heat switch
— LED pilot lights

 • Safety Equipment — Electric Oven
— Adjustable, thermocouple actuated, manual reset excess temperature controller
— Separate heating element control contactors
— Recirculating blower air flow safety switch

 • Safety Equipment — Gas Oven
— Adjustable, thermocouple actuated, manual reset excess temperature controller
 — Solid state electronic flame safeguard protection
—Stainless steel powered forced exhauster
—Exhauster air flow safety switch
—Recirculating blower air flow safety switch
—Purge timer
—High gas pressure switch
—Low gas pressure switch
—Two pilot safety shutoff valves with leak test stations
—Two main safety shutoff valves with leak test stations (Industrial Risks Insurers vent valve
    only provided on specific request)
—Valve position indicator on main safety shutoff valves
—Over 400,000 BTU/HR safety shutoff valve interlocked with purge timer

• Construction
—Choice of recirculating air flow patterns
—Adjustable patented opposed louvers on full coverage supply and return duct work
—16 gauge 304 stainless steel interior
—Aluminized steel exterior with enamel finish
—Brushed stainless steel control panel face
—Exceptionally heavy duty doors and door frame with explosion venting latches
—High temperature inner and outer door gaskets with stainless steel spring insert
—Insulated with 2" thick 1900°F insulating block, backed up with 10 lbs/cf density 1250 °F
    industrial rockwool
—Two (2) stainless steel shelves
—Channel shelf supports prevent shelves tipping
—Adjustable fresh air intake and exhaust dampers
—High pressure stainless steel recirculating blower
—All welded construction
—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
Work Space
Outside
Dimensions*
(WxDxH)
Max
Temp
Blower
Insu-
lation
Doors
Heat Input
Operating Characteristics†
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
CFM
HP
kW
BTU/HR
Control
Accuracy
Oven
Uniformity
Rise Time
Electric Gas
HA-1050 20" x 20" x 20" 4.6 48" x 45" x 60" 1050°F 700 1/2 10" Single 15 90,000 ±0.3%
±8°F     
 58 min 35 min 1885 lbs 
HA-1250 20" x 20" x 20" 4.6 52" x 49" x 64" 1250°F 1000 3/4 12" Single 20 125,000 ±0.3%
±11°F     
 66 min 46 min 2195 lbs 
HX-1050 38" x 20" x 26" 11.4 66" x 45" x 66" 1050°F 1000 3/4 10" Double 20 150,000 ±0.3%
±8°F     
 66 min 36 min 2965 lbs 
HX-1250 38" x 20" x 26" 11.4 70" x 49" x 74" 1250°F 1200 1 12" Double 30 175,000 ±0.3%
±11°F     
 67 min 46 min 3570 lbs 
HB-1050 38" x 26" x 38" 21.7 68" x 51" x 82" 1050°F 1600 1 1/2 10" Double 30 175,000 ±0.3%
±8°F     
 51 min 36 min 3590 lbs 
HB-1250 38" x 26" x 38" 21.7 72" x 55" x 86" 1250°F 1600 1 1/2 12" Double 40 200,000 ±0.3%
±11°F     
 69 min 50 min 4325 lbs 
HZ-1050 38" x 26" x 50" 28.6 68" x 51" x 94" 1050°F 2000 2 10" Double 40 200,000 ±0.3%
±8°F     
 52 min 39 min 3740 lbs 
HZ-1250 38" x 26" x 50" 28.6 72" x 55" x 98" 1250°F 2000 2 12" Double 60 300,000 ±0.3%
±11°F     
 65 min 49 min 4410 lbs 
HY-1050 38" x 38" x 38" 31.8 68" x 63" x 82" 1050°F 2000 2 10" Double 40 200,000 ±0.3%
±8°F     
 54 min 46 min 4130 lbs 
HY-1250 38" x 38" x 38" 31.8 72" x 67" x 86" 1250°F 2000 2 12" Double 60 300,000 ±0.3%
±11°F     
 60 min 48 min 4870 lbs 
HC-1050 50" x 50" x 50" 72.3 100" x 77" x 106" 1050°F 3750 3 10" Double 80 500,000 ±0.3%
±8°F     
 75 min 46 min 7590 lbs 
HC-1250 50" x 50" x 50" 72.3 104" x 81" x 110" 1250°F 4200 5 12" Double 120 700,000 ±0.3%
±11°F     
 90 min 48 min 9140 lbs 
VA-1050 26" x 26" x 38" 14.9 46" x 66" x 73" 1050°F 1600 1 1/2 10" Single 24 125,000 ±0.3%
±9°F     
 91 min 66 min 3245 lbs 
VA-1250 26" x 26" x 38" 14.9 50" x 70" x 77" 1250°F 1600 1 1/2 12" Single 30 200,000 ±0.3%
±12°F     
 101 min 73 min 4010 lbs 
VB-1050 26" x 38" x 50" 28.6 46" x 78" x 85" 1050°F 1600 1 1/2 10" Single 30 200,000 ±0.3%
±9°F     
 76 min 53 min 3810 lbs 
VB-1250 26" x 38" x 50" 28.6 50" x 82" x 89" 1250°F 1600 1 1/2 12" Single 40 300,000 ±0.3%
±12°F     
 85 min 65 min 4650 lbs 
  *All Models—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.
. 		  †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

Inner and outer door gasket; inner gasket seals directly against door plug, outer gasket against oven face. Two (2) reinforced 200 lbs uniformly distributed load capacity, 304 stainless steel expanded metal shelves; shelf support channels on 3" centers (6" on HC Models).

304 stainless steel interior and Trilite Green enamel painted aluminized steel exterior.

• Electric Models
Each features completely wired, side 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. The 1250°F models have a heat chamber high limit controller. Exhaust outlet 4" diameter.

 • Gas Models
—1,000 BTU natural gas at 6" water column pressure, 1" NPT inlet
—Other gas characteristics available
Control panel as detailed above and safety devices as listed on the front of this bulletin. Automatic pre-ignition purge period and push button electric ignition contributes to ease of operation. Modulating gas burner is protected with electronic flame
safety relay.

H SERIES
Horizontal Air Flow
These electric or gas-fired models come in five sizes. They feature full horizontal air flow for shelf processing at temperatures to 1250°F. Commonly used where work is shelf loaded and least restriction to free air passage is in the horizontal
direction.

• HA Series – 4.6 cubic feet, holds 6 shelves
• HX Series – 11.4 cubic feet, holds 8 shelves
• HB Series – 21.7 cubic feet, holds 12 shelves
• HZ Series – 28.6 cubic feet, holds 16 shelves
• HY Series – 31.8 cubic feet, holds 12 shelves
• HC Series – 72.3 cubic feet, holds 8 shelves

V SERIES
Vertical Air Flow
These electric or gas-fired models come in two sizes. They feature full vertical air flow for processing at temperatures to 1250°F. Used where least restriction to free air passage is in the vertical direction. Heated air is supplied at the bottom of the work space and sweeps upward through the work load. Ideal for hanging long parts or applications requiring heated air to pass both around the outside and through the middle of parts such as open ended cylinders.

• VA Series – 14.9 cubic feet, holds 12 shelves
• VB Series – 28.6 cubic feet, holds 16 shelves
Due to vertical air flow, a large number of shelves or dense shelf loading will restrict air flow and may adversely affect oven operation.


Circulation Diagrams

H Series (Front View)
Heated air is blown sideways between shelves and across parts
 
V Series (Side View)
Heated air is provided at the bottom and pulled upward through shelves and load.








• 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 period until door is opened or timer reset; 1, 5, 10, or 30 hour range
Option BT

 • 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"
650 CFM 1/2 6" 23"
†Gas ovens include 325 CFM exhauster.
Except 650 CFM on HC-1250
Electric ovens may require additional heat input.

 
ADDITIONAL EQUIPMENT AVAILABLE Back to Top

See Bulletin TC-960 for modifications and other optional equipment.

• Additional Shelves, 200 lbs distributed load per shelf, 800 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
• Programmable Recording Temperature Controller, microprocessor based, thermocouple actuated, digital display, 24-hour, 10" diameter circular chart, in lieu of standard controller
Option PRTC3

• 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

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

 
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Specifications Subject to Change Without Notice
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