24 \ USER OPERATION MANUAL:
Cole-Parmer Basic Ductless Fume Hood Series
6.11
Fault Finding
WARNING! Before attempting any inspection or replacement of electrical components, always isolate
the cabinet from the main power supply and remove the power supply cable.
Fault
Check
Low Airflow Alarm
•
Check airflow at aperture
•
Check pre-filter is not blocked
•
Check fan is running
•
Recalibrate
Filter Saturated (Optional)
•
Check filter condition with Gastec or Draeger test kit
•
Check filter seal
•
Check filter is correct for application
•
Check date on filter
•
Replace all filters
Fan not Working
•
Check inlet fuse
•
Check any loose wires to terminal blocks
•
Bypass speed controller; if fan works, replace speed controller
•
Replace fan capacitor
•
Replace fan
