Labconco Protector ClassMate Laboratory Hoods 69716 - Manual (Page 68)

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Chapter 8: Troubleshooting
PROBLEM CAUSE CORRECTIVE ACTION
Fume Hood blower
turns on but lights
don’t work (cont.) Lamp wiring is
disconnected. Inspect lamp wiring.
Defective lamp
ballasts.
Replace lamp ballasts.
Contamination
outside of
laboratory fume
hood Improper technique
or procedure for the
fume hood. See “Certifying the Hood Chapter 3
and “Safety Precautions” Chapter 4
sections in the manual.
Restriction of the
baffle air slots or –
blockage of the
exhaust outlet. Ensure that all baffle air slots, and the
exhaust outlet are unobstructed.
External factors are
disrupting the fume
hood airflow patterns
or acting as a source
of contamination. See “Location Requirements” Chapter
2, “Certifying the Hood” Chapter 3,
and “Safety Precaution” Chapter 4
sections of this manual.
Fume Hood has
improper face
velocity of 100 fpm
average. Have fume hood re-certified and check
remote blower exhaust system.
Fume Hood Vertical
Sash no longer
operates smoothly Cable is frayed or
plastic protection is
damaged. Inspect cable and replace cable if worn
or damaged; otherwise injury could
result.
Pulley bearing is
damaged. Replace pulley, bearing or add grease.
Cable has slipped off
the pulleys. Re-install cable or replace if damaged.
Weight has broken
pulleys. Replace weight pulleys.
Fume Hood
combination A-Style
Sash no longer
operates smoothly Horizontal glass
panels have come off
the tracks. Re-install horizontal glass on tracks.