NuAire LabGard NU-581-400, Руководство по эксплуатации и обслуживанию

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OM0302
Rev 2/December 2020 Page 37 of 107
7.0 General Maintenance
All maintenance actions on this equipment must be performed by a qualified
technician who is familiar with the proper maintenance procedures required
for this equipment. This includes both certification as well as repair.
7.1 Decontamination
No maintenance should be performed on the interior of the LABGARD ES cabinet (area behind access panels) unless the
cabinet has been microbiologically decontaminated, is known to biologically clean, or known to be chemically inert. Surface
disinfection is performed as specified in the Cleaning Procedures section.
Hazardous Gases! Personal Protection Equipment Required.
A disinfection using formaldehyde must be performed in accordance with the specifications of
NSF/ANSI 49, Annex I-2 (formerly Annex G).
This procedure presents considerable risks and must be performed only by specially trained and authorized
service personnel in accordance with applicable national safety regulations.
The formaldehyde is vaporized within the tightly sealed sample chamber. The quantity of the applied
formaldehyde depends on the volume of the sample chamber in the safety cabinet that is to be disinfected.
The formaldehyde evaporates immediately after reaching its boiling point; the minimum reaction time is 6
hours. Therefore, the formaldehyde should be neutralized after the specified reaction time by vaporizing
ammonia.
Flammable Hazard!
Formalin is flammable. The auto-ignition temperature of formalin is 430 ° C (820° F).
With a volume percentage of 7.75% in dry air, formaldehyde vapor may explode.
For vaporization, do not use heating devices reaching temperatures above 250° C (477° F).
Chemical Hazard!
Formalin in reaction with hydrogen chloride will form BCME which is a hazardous chemical.
When using formalin, all residues of hydrogen chloride in the work chamber of the cabinet must be
removed.
CAUTION
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CAUTION
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CAUTION
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CAUTION
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