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Thermo Scientific
Troubleshooting
Section 8
The following is a guide to troubleshooting the system. If a contaminated
area of the cabinet must be entered to determine and/or resolve the source
of a particular problem, the cabinet must first be decontaminated.
Warning Before any maintenance work is performed in the biological
safety cabinet, the unit must first be decontaminated.
Caution Servicing of the unit must be performed by qualified service
personnel.
▲
Problem 1: Airflow in the cabinet work area and through the exhaust filter
is inadequate.
Possible causes:
•
Exhaust filter is blocked by laboratory materials or the protective
shipping cover.
•
If the biological safety cabinet is connected to an exhaust system, there
may be inadequate exhaust suction or back pressure in the duct system.
The system must be rebalanced to handle the correct air volume. A
biological safety officer should be consulted.
•
Low voltage is being applied to the cabinet.
•
Blower motor is defective.
•
Supply HEPA filter and Exhaust HEPA filter may be loaded.
Decontaminate the unit and replace both HEPA filters.
•
Window is below normal working height.
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Model 1400 Series
8-1
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