Labconco Protector 4882200 User Manual page 50

Chapter 8: Troubleshooting
PROBLEM
Fume hood blower
operates but lights
don't work (cont.)
Contaminants
escape outside of
fume hood
Vertical sash no
longer operates
smoothly
Combination A-
Style sash no longer
operates smoothly
46
CAUSE CORRECTIVE ACTION
Lamp wiring is Inspect lamp wiring.
disconnected.
Defective lamp Replace lamp ballasts.
ballasts.
Improper user See "Certifying the Hood" Chapter 3
techniques for the and "Safety Precautions" Chapter 4
fume hood. sections in the manual. (Ref. Appendix
D)
Restriction of the Remove baffles to ensure that all air
baffle air slots or slots and the exhaust outlet are
blockage of the unobstructed.
exhaust outlet.
External factors are See "Location Requirements" Chapter
disrupting the fume 2, "Certifying the Hood" Chapter 3,
hood airflow patterns and "Safety Precautions" Chapter 4
or acting as a source sections of this manual. (Ref. Appendix
of contamination. D)
Fume hood has Have fume hood re-certified and check
improper face remote blower exhaust system. Hood
velocity. should have average face velocity of
80-100 fpm.
Cable is frayed or Inspect cable and replace cable if worn
plastic protection is or damaged immediately; otherwise
damaged. injury could result.
Pulley bearing is Replace pulley, bearing or add grease.
damaged.
Cable has slipped off Re-install; cable must be replaced
the pulleys. immediately if damaged.
Weight has broken Replace weight pulleys.
pulleys.
Horizontal glass Re-install horizontal glass on tracks.
panels have come off
the tracks.
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