Labconco Protecto Ech Filtered Fume Hoods 183 Series 8' - Manuel (Page 120)

Chapter 8: Troubleshooting
Product Service 1-800-522-7658 114
Original instructions
PROBLEM CAUSE CORRECTIVE ACTION
Fan operates but
lights will not
operate Lamp wiring is
disconnected. Inspect lamp wiring.
Defective lamp
ballasts. Replace light box.
Contaminants
outside of fume
hood Improper user
techniques for the
filtered fume hood. See “Certifying the Filtered Hood”
Chapter 3 and “Safety Precautions”
Chapter 4 sections in the manual. (Ref.
Appendix I)
External factors are
disrupting the filtered
fume hood airflow
patterns or acting as a
source of
contamination.
See “Location Requirements” Chapter 2,
“Certifying the Filtered Hood” Chapter 3,
and “Safety Precautions” Chapter 4
sections of this manual. (Ref. Appendix
I)
Filtered fume hood
has improper face
velocity. Have fume hood re-certified. Check sash
stop locations and fan(s) operation.
Hood should have average face velocity
of 60-100 fpm.
Vertical sash no
longer operates
smoothly Cable is frayed or
plastic protection is
damaged. Inspect cable and replace cable if worn or
damaged immediately; otherwise injury
could result.
Pulley bearing is
damaged. Replace pulley, bearing or add grease.
Cable or chain has
slipped off the
pulleys or sprockets. Re-install, cable or chain must be
replaced immediately if damaged.
Weight has broken
pulleys or sprockets. Replace pulleys or sprockets.
Vertical sash frame is
distorted. Place horizontal glass symmetrically and
pull sash down to air foil. Straighten
damaged frame.
Cable is frayed or has
slipped off the
pulleys. Re-install, cable must be replaced
immediately if damaged.