Chapter 8: Troubleshooting
Product Service 1-800-522-7658
40
Original instructions
PROBLEM
CAUSE
CORRECTIVE ACTION
Fume hood blower
operates, but lights
will not operate
Lamp wiring is
disconnected.
Inspect lamp wiring.
Defective lamp
ballasts.
Replace lamp ballasts.
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 E)
Restriction of the
baffle air slots or –
blockage of the
exhaust outlet.
Remove baffles to ensure that all 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 Precautions” Chapter 4 sections of
this manual. (Ref. Appendix E)
XStream Fume hood
has improper face
velocity.
Have fume hood re-certified and check
remote blower exhaust system. XStream
Hood should have average face velocity of
50-100 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.
Combination A-
Style Sash no longer
operates smoothly
Horizontal glass
panels have come off
the tracks.
Re-install horizontal glass on tracks.
