SECTION 3
FILTERS
Filters concentrate dust, pollutants etc
Care must be taken when changing filters.
IMPORTANT: Personal Protective Equipment must be worn when
changing filters including gloves and particulate facemask.
PRE-FILTER – CHANGING
This may be carried out with the cabinet running to provide additional protection
to the operator.
•
Rotate the small plastic catches inside the fume enclosure, which will allow
the pre-filter retaining grille to be lowered giving access to the pre-filter.
MAIN CARBON FILTER – CHANGING
Check filters to be fitted are the correct grade for intended use.
Contact Monmouth Scientific for information if required.
•
The cabinet should be turned off whilst changing the main carbon filter and
the mains cable un-plugged.
•
Remove the pre-filter (see pre-filter changing procedure above).
•
Disconnect the airflow sensor plug from the back of the cabinet.
•
From inside the fume enclosure, remove the four M5 nuts securing the fan /
filter module.
•
Lift the fan / filter module off the fume enclosure to expose the carbon filter.
•
Remove the filter and seal in a marked bag for disposal.
•
Fit the new filter checking the seals for integrity.
•
Re-assemble the cabinet.
MAIN HEPA FILTER – CHANGING
•
Carry out safety hazard assessment for safe changing.
•
Follow the procedure for changing carbon filters taking extra care with
operator protection. (A dropped filter can release particulate).
•
Dispose of filter as hazardous waste.
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