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Thermo Scientific
Maintenance
Section 6
The annual certification consists of the following checks:
• Electrical safety in accordance with national regulations.
• Functional test of the device.
• Checking all components for possible damage.
• Checking the filter state.
• Verifying device air flows
• Checking the airflow conditions.
• Repeat test in accordance with NSF/ANSI 49.
Recommended annual maintenance tasks
• Ensure the unit is within its certification window
• Clear debris from under the worktray and paper traps
• Confirm that both LED bulbs are working (Replace as necessary)
• Replace UV bulb if necessary (1500 hour life)
• Ensure the counterweight path is clear and unobstructed
• Ensure the sash is moving freely through its full range of travel
• Check sash cords and pullies for ware and/or damage
• Inspect sash attachment points for cracks or damage
• Ensure all service valves are working properly
Contact our service department if help is needed on any of these
maintenance steps.
Warning The diffuser plate on the chamber ceiling serves as protection for
the downflow filter and prevents refluxing of downflow air. When
scanning the filter surface for a leak test, the perforated plate must be
removed.
s
1500 Series A2
6-1
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