General lab & storage
Fume hood
A ventilated enclosure that draws air away from the user to capture and remove harmful vapours, gases and dusts while working with chemicals.
- Pharmaceutical
- Chemicals
- Universities and research
- Environmental testing
- Food testing
TROUBLESHOOTING
Common problems, causes and fixes
Low-flow alarm
Likely causes
- • Sash raised too high
- • Fan or belt fault
- • Damper closed
What to do
- • Lower the sash
- • Report to engineering for fan repair
- • Check and open the damper
Odours escaping into the lab
Likely causes
- • Working too close to the opening
- • Clutter blocking baffles
- • Cross-draughts from doors or air vents
What to do
- • Work 15 cm inside the hood
- • Clear the hood
- • Redirect air vents or relocate activities
Face velocity uneven across the opening
Likely causes
- • Blocked baffle slots
- • Large equipment inside
What to do
- • Clear the slots
- • Raise or move equipment
Sash will not stay in place
Likely causes
- • Broken counterweight cable
What to do
- • Stop using the hood and arrange repair
In LimsPulse · Calibration Management
Keep every Fume hood in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.