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Loading:
Mechanical convection ovens rely on methods of air circulation, hence, general
loading procedures are applicable and must be followed. To insure that the
circulation of heated air is not restricted in the chamber. The following should be
observed:
1. At least 1" should be left between objects placed on the shelves.
Note With mechanical convection ovens, objects should not be placed on shelves
in such a manner as to block the movement of heated air into the chamber from
the side diffuser panel.
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2. The bottom of the chamber must be kept free and clear of objects.
3. At no time should solid shelves be substituted for the shelves that are
provided.
Warning The Model 625S Oven is designed primarily for use in applications
where hazardous materials are involved.
Materials that exhibit volatile, combustible and/or flammable characteristics
when tested in a heated chamber can pose a potential danger.
In these circumstances, the possibility of a violent reaction exists and the
design of this oven reduces the risk of injury to personnel.
If an explosion should occur, the blow-out panel at oven rear will be
propelled backward toward the heavy metal capture cage. The latches
securing the blow-out panel have a combined pressure considerably lower
than the oven door; therefore, the door should remain secure, with the
exception of a violent explosion.
In handling hazardous material, extreme caution must be exercised. It is
advisable that personnel engaged in this testing be knowledgeable of Material
Safety Data Sheets and Hazardous Materials Identification System.
When tests involving aerosol canisters are being conducted, temperatures of
120°F (49°C) should never be exceeded.
Avoid placing plastic materials in the oven. Extreme temperatures may cause
plastics to melt, posing a fire hazard. If plastics are placed in the oven, do not
leave the oven unattended.
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Operation Section 5
Freas Safety Oven
5-3
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