Fault Finding; Component Changing - Air Science Purair BASIC User's Operation Manual

29 \ USER OPERATION MANUAL: Purair Basic Series

6.12 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
Filter Blockage Alarm
Filter Saturated (Optional)
Fan Not Working

6.13 Component Changing

SHOULD ONLY BE CARRIED OUT BY TRAINED PERSONNEL
WARNING! Ensure main power supply has been removed prior to any work being carried out.
Light Bulbs
To replace a light bulb, use the following instructions:
Access panel located on rear of hood.
1. Remove 6 screws to release the panel.
2. Rotate bulb ¼ turn counter clockwise to remove
and replace.
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®
Check
• Check airflow at aperture
• Check pre-filter is not blocked
• Check fan is running
• Recalibrate
• 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
• Check inlet fuse
• Check any loose wires to terminal blocks
• Bypass speed controller; if fan works, replace speed controller
• Replace fan capacitor
• Replace fan
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