Grieve Class 100 HEPA Filter Clean Room Laboratory Bench Ovens

Class 100
Bench Ovens

BULLETIN
BH-458

CLASS 100
MICROPROCESSOR
CONTROLLED
FORCED CONVECTION
BENCH OVENS

Grieve Class 100 Bench Ovens, with or without HEPA filters, are specifically designed to meet the strict requirements of semiconductor and electronic component manufacturers. They provide excellent uniformity and temperature control, rapid rise and recovery times and meet Class 100 air requirements.

Standard Features
Specifications
Standard Equipment
Additional Equipment


MODEL MCF-250	MODEL MHP-250

STANDARD FEATURES Back to Top

ALL MODELS
—Temperatures to 250°C (482°F)
—Microprocessor based programming temperature controller
—Digital set point guarantees repeatable settings
—Large digital temperature display of set point and oven temperature
—Platinum RTD temperature sensor
—Both visual and audible alarms indicate over-temperature condition
—304 stainless steel interior
—Stainless steel blower and heating elements
—Four (4) perforated stainless steel shelves, adjustable on 1-3/4" centers
—Shelf supports and plenums easily removed for cleaning
—Enameled steel exterior
—3" insulation all sides
—Plug style door to retain chamber heat
—One-piece silicone door gasket
—Adjustable 2" diameter exhaust vent
—1/8" fitting for introducing inert gas or filtered air
—3-wire line cord
—1 year limited warranty

MC SERIES
Specifically designed to meet Class 100 air requirements without the use of filters, simplifying oven maintenance and cleaning. For use in clean areas and where particles are not generated by the load. Temperatures to 250°C (482°F). Choice of capacities — 2.6, 3.7 and 4.7 cubic feet.

MH SERIES
Recirculated air flow is continually passed through a high temperature HEPA filter to remove particles introduced by room conditions or work load. High temperature HEPA filter is 99.97% efficient on 0.3 micronparticles. Capacity of 2.8 cubic feet and temperatures to 250°C (482°F).

SPECIFICATIONS Back to Top
NOT FOR USE WITH FLAMMABLE SOLVENTS OR VAPORS. OTHER MODELS
AVAILABLE FOR THESE APPLICATIONS—PLEASE CONSULT FACTORY.

Model Work Space Outside
Dimensions
(WxDxH) Max
Temp Blower Number
of
Shelves Insu-
lation Watts Operating Characteristics† Approx
Shipping
Weight Model

Dimensions
(WxDxH) Volume
Cu Ft CFM HP Control
Accuracy Oven
Uniformity Rise Time;

MCD-250 13" x 18" x 19.5" 2.6 21.625" x 24.25" x 35" 250°C 125 1/15 4 3" 1900* ±0.1°C ±1.0°C 22 min 205 lbs MCD-250

MCE-250 18" x 18" x 19.5" 3.7 26.625" x 24.25" x 35" 250°C 125 1/15 4 3" 3100 ±0.1°C ±1.0°C 18 min 240 lbs MCE-250

MCF-250 23" x 18" x 19.5" 4.7 31.625" x 24.25" x 35" 250°C 125 1/15 4 3" 3100 ±0.1°C ±1.0°C 20 min 264 lbs MCF-250

MHP-250 14" x 18" x 19.5" 2.8 26.625" x 24.25" x 35" 250°C 125 1/15 4 3" 3100 ±0.2°C ±1.5°C 11 min 235 lbs MHP-250

*2100 watts on 208 volts †Accuracy and uniformity at 100°C (90°C MHP Series). Rise Time in minutes to 200°C (90°C MHP Series). Tests run with empty oven and minimum exhaust. Performance will vary with load, exhaust rate and application. See Bulletin TC-920 for additional details.

STANDARD EQUIPMENT Back to Top

Standard Electric Characteristics
— 120 volts, 50-60 Hz, 3-wire cord and plug (Available only on Model MCD)
— 240 volts, 50-60 Hz, 3-wire cord
— Other electrical characteristics available

Standard Temperature Control System
Programmable, microprocessor based, temperature controller provides for one program of two ramps and two dwells. Ramp from as low as 0.01°C per minute and dwell from 0 to 9999 minutes. An independent hydraulic thermostat, set by the operator to a temperature slightly higher than the maximum set point, provides a mechanical back-up should the main controller fail. An amber panel lamp signals over-temperature situation. Optional programmable control (4 programs of 8 ramps and 8 dwells) is listed below.

MC SERIES
Designed to meet the strict requirements of semiconductor and electronic component manufacturers. Meets Class 100 air requirements through the use of stainless steel components (including heater elements, blower, shelves and interior walls) without an internal filter, simplifying maintenance and cleaning.

MH SERIES WITH HEPA FILTER
Construction similar to MC Series above, plus easily replaceable 17" wide x 17" high x 3" deep, high temperature HEPA filter to remove particles introduced from room conditions or product load. Filter is accessible by removing stainless steel cover held in place by four (4) stainless steel screws.

Circulation Diagrams
MC Series without HEPA Filter	MC Series with HEPA Filter

ADDITIONAL EQUIPMENT AVAILABLE Back to Top

Standard Electric Characteristics

Additional Shelves, 25 lbs distributed load per shelf, 75 lbs maximum oven load, specify oven model when ordering.

Programmable Temperature Controller, microprocessor based, digital indicating, 4 programs of 8 ramps and 8 dwells, ramp rate in °C per minute, specify maximum dwell of either 999.9 minutes or 999.9 hours when ordering, in lieu of standard controller
Option MPTC

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