Important operating and/or maintenance instructions. Read the accompanying text carefully.
Potential electrical hazards. Only qualified persons should perform procedures associated with this
symbol.
Extreme temperature hazards. Only qualified persons should perform procedures associated with this
symbol.
Potential biological hazards. Proper protective equipment and procedures must be used.
This symbol when used alone indicates important operating instructions which reduce the risk of
injury or poor performance of the unit.
CAUTION: This symbol, in the context of a CAUTION, indicates a potentially hazardous situation
which if not avoided could result in minor to moderate injury or damage to the equipment.
CAUTION: This indicates a situation which may result in property damage.
Before installing, using or maintaining this product, please be sure to read the manual and product
warning labels carefully. Failure to follow these instructions may cause the product to malfunction,
which could result in injury or damage.
WARNING: Unauthorized repair of your freezer will invalidate your warranty. Contact Technical
Service at 1-800-438-4851 for additional information.
Thermo Scientific
Preface
Cryogenic Transfer Vessels
iii