GE OPTIMA MR360 Service Training page 12

Due to the magnet top off you may have to sting the magnet and handle
dewars during this fill. The gas cylinders must be strapped down and when not
in use have their cap on, also be very careful of the dewars. In most cases, Air
Products or a cryogen contractor will take care of this task, but you should be
aware of this in case you need to perform it.
Frostbite:
•Distance and Time- Frostbite Protection
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