5.1 Filter Unit
The filter unit does not need any special maintenance, except for filter replacement as
described below.
The installed motor is a brushless type and made for continuous use. To protect the motor in an
overload situation, the motor is equipped with a thermal overload protection as described on
page 4.
5.2 Filter Replacement
As the filter insert becomes increasingly saturated, the exhaust capacity of the Unit decreases.
When the pressure gauge reaches a factory preset level (red mark), the airflow approaches a
minimum and filters should be replaced.
Filter Replacement Procedure:
Caution! Fire Hazard:
The gas phase filter media may be saturated with flammable substance. Do not handle or replace
filter while smoking or in close distance to any open flame.
To replace the filters:
• Turn the Unit off and disconnect from main power source.
• Open the Unit's top cover by releasing the four latches and removing the lid.
• Remove pleated prefilter (or optional HEPA filter).
• Remove activated carbon tray. Empty the filter tray by pouring the saturated filter media into a
waste container.
• Dispose of carbon tray filter mat.
Caution! Used filter media may contain toxic or flammable substances.
Observe relevant codes for safety and local hazard’s material disposal.
• Install the white mat on the bottom of the metal carbon filter tray.
• Fill the carbon tray with activated carbon. The activated carbon is supplied in a separate bag.
Note:
The bulk carbon contains a certain amount of dust which is created during transport and handling
by the pellets rubbing against each other. Therefore, you will see dust escaping during the refilling
process. Please make sure the operator wears the appropriate protective mask. The Loctite
®
Air
Filtration System is equipped with an afterfilter mat. We recommend leaving the old afterfilter mat
in place after the carbon has been replaced and replace it only after the Unit has been in
operation for 10 to 15 minutes. After that time, or if you notice a substantial reduction in the
airflow, you should change the afterfilter. This insures that the carbon dust from the refill will be
collected in the old filter and not lower the airflow of the new filter set.
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5. Maintenance and Cleaning
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