Labconco Fume Adsorbers 3955422 - Manual (Page 22)

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C
HAPTER
6
M
AINTAINING
Y
OUR
E
NCLOSURE
Monitoring airflow and changing the carbon filters (if equipped) is the primary
maintenance required.
Review this chapter on maintenance for the following:
1. Routine Maintenance.
2. Determination of when to replace carbon filters and how to replace.
3. Calculating carbon filter life.
Routine Maintenance Schedule
Weekly

Wipe down the interior and exterior surfaces of the enclosure with a mild
soap, depending upon the usage of the unit, and allow to dry.

Operate the exhaust system, noting the airflow velocity through the
enclosure using a source of visible smoke.
Monthly (or more often as required)

Determine the actual face velocity through the sash opening of the
enclosure where the average reading should be at the specified velocity of
35±10 fpm. (Use calibrated thermal anemometer or other approved
apparatus).

While the enclosure is filled with the contaminant, test filter condition on
carbon filters using the appropriate gas detector tube at intervals of 20% of
the total estimated time. There is a 5/16" diameter hole on the upper right
side for inserting the detector tube. The exception to the 20%