Labconco Protector XLE Fume Hoods 9970801 - Manual (Page 34)

Chapter 8: Troubleshooting
Product Service 1-800-522-7658 30
PROBLEM CAUSE CORRECTIVE ACTION
Contaminants outside
of fume hood Improper user
techniques for the
fume hood. See “Certifying the Hood” Chapter 3 and
“Safety Precautions” Chapter 4 sections
in the manual. (Ref. Appendix D)
Restriction of the
baffle air slots or –
blockage of the
exhaust outlet. Remove baffles to check that all air slots,
and the exhaust outlet are unobstructed.
Replace baffles.
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 Precautions” Chapter 4 sections
of this manual. (Ref. Appendix D)
Fume hood has
improper face
velocity. Have fume hood re-certified and check
remote blower exhaust system. Hood
should have average face velocity of 80-
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 has slipped off
the pulleys. Re-install, cable must be replaced
immediately if damaged.
Weight has broken
pulleys. Replace weight pulleys.
Spring assembly. Inspect to make sure spring is still
attached to he sash.
Electrical duplex
receptacles no longer
have power Wires not connected
or faulty duplex. Check wire connection or replace duplex.
Circuit breakers
tripped in building
electrical supply.
Reset circuit breakers.