Honeywell F111U Product Data page 9

Replace the lamps every 12 months to maintain peak
performance:
1. Disconnect power to Air Cleaner.
2. Allow lamps to cool for 15 minutes before servicing.
3. Rotate lamp knob counterclockwise and gently pull
knob to remove lamp.
4. Fully insert new lamp into base unit with lamp light
indicator at five o'clock position. Do not touch lamp
surface with your hands.
F111U IN-CEILING MEDIA AIR CLEANER WITH ULTRAVIOLET AIR TREATMENT SYSTEM
NOTES
9
5. Rotate lamp clockwise until it snaps into place with lamp
indicator light aligned with raised button on unit cover.
6. Connect power to Air Cleaner. Verify that ultraviolet
lamps are operating by viewing lamp indicator on lamp
knob. Do not attempt to look directly into unit to see
illuminated ultraviolet lamps.
NOTE: The lamps are the only field-serviceable parts in the
UV lights.
68-0275-2