18 \ USER OPERATION MANUAL:
Cole-Parmer Basic Ductless Fume Hood Series
4.2
Cabinet Operating Procedure
•
The fume hood should only be operated with the correct filter installed for the application. Refer to
Filter Information - page 27
for further information. The ductless fume cabinet must not be used for laboratory
work in which chemicals of different types are used that do not match the filter type or that the primary chemicals
and their byproducts are not known. The ductless fume cabinet should not be used for different chemical
processes where chemicals from the different processes could react in the filter.
•
To start the system, apply power to the system and switch on the green power On/Off switch. The lights and fan
will automatically turn on.
•
Check the airflow and the filter condition of the cabinet on a regular basis. This is covered in
.
•
Please note, filter blocks do not absorb carbon monoxide or hydrogen. Small quantities will not cause hazards
because of the large dilution factor from the amount of air passing through the cabinet and the retardation of the
chemical in the filter matrix.
•
Cole-Parmer fume hoods have been designed to handle fumes and vapors given off during everyday
laboratory procedures. These will be at the parts per million (PPM) level in the air stream entering the filter
block. It is not recommended that large quantities of solvents or acids be used or boiled off in the cabinet.
•
In the event of a large spillage in the cabinet, the amount of fumes entering the filter block may temporarily
reduce the efficiency of the filter. For this reason any major spillage must be cleared up immediately, preferably
using spillage absorption granules rather than paper, which may aggravate the evaporation of toxic fumes from
the spillage area.
•
Following a major spillage, the filters must be changed, as the heat of wetting may reduce the efficiency of the
filter. After a period of stabilization, the old filters may be reused, providing they have not reached the
saturation level.
•
The electrical equipment in the cabinet such as the lights and controls are not in the dirty air stream of the
system. The system should not be used in a flammable room atmosphere. Special modified cabinets can be
provided for use in these areas. Contact Cole-Parmer for further information on these applications.
•
Operators should avoid sudden movements within the fume cabinet, such as rapid opening or closing of the
sash window, as this may cause temporary reversal of the airflow.
•
The operators should maintain the normal safety equipment and procedures for dealing with hazardous chemicals.
WARNING!
» Do not use a gas flame (Bunsen burners) whenever possible, as it interferes with airflow.
» Do not change the original blower speed of the cabinet unless the change is required by a decrease in
measured air velocity. Adjustment should be made only by a qualified technician. Do not operate the cabinet
if fan fails to run.
» Minimize arm movement. Move arms in and out of the cabinet slowly to avoid disrupting cabinet airflow.
» Use absorbent pads on the work surface where appropriate to minimize splatter and aerosol generation in
case of spillage.
» Keep lids/covers on all containers, dishes or sample plates.
