Labconco Protector XL 1110 Series User Manual page 31

Original instructions
Final Purging
 Upon completion of the work, the hood should be allowed to operate for
two minutes undisturbed, to purge airborne contaminants from the work
area before closing the sash.
Unloading Materials and Equipment
 Objects in contact with contaminated material should be surface
decontaminated before removal from the hood.
 All open trays or containers should be covered before being removed from
the hood.
Shutdown
 Turn off the light and close the sash.
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Chapter 5: Using Your Protector XL
27