Air Science
®
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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 Check
Filter Blockage Alarm •Checkairowataperture
•Checkpre-lterisnotblocked
• Check fan is running
• Recalibrate
Filter Saturated (Optional) •ChecklterconditionwithGastecorDraegertestkit
•Checklterseal
•Checklteriscorrectforapplication
•Checkdateonlter
•Replacealllters
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
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.