9) Slide a large plastic bag over the top of filter cartridge.
10) Remove the filter while in the bag and tie the end of the bag closed. Make sure not to allow
dust to fall into the area below the filters during the removal process.
11) Cover the filter duct and ring to avoid dirt
or dust entering the clean air duct. Make
sure to cover the entire duct and filter ring.
A plastic bag can be used.
12) Clean each of the filter clamp and CAD
rings. This can be done by simply sucking
them off with a proper vacuum system or
wiping them clean with a dry cloth. Make
sure not to damage the gasket on the CAD
ring.
13) Some excess dust and debris may need to be removed while the filters have been removed
from the unit. This can be done by sweeping the dust into the dust trays. The dust trays can
then be serviced as normal. Alternatively, excess dust in the filter compartment can also be
removed through the suction of a proper vacuum system.
14) Remove the covering from the last filter duct.
15) Place the new filter onto the filter ring with the gasket seal end up. The end with no sealing
gasket must be down. Make sure the filter is properly seated.
16) Once the filter is properly seated, grab the bottom of the filter clamp. This time you will push
down and away from you to lock the filters back into place.
17) Rotate the wrench 90 o to tighten the clamp. As the cam turns, it will increase pressure onto
the filters. Make sure to create full pressure onto all of the filters.
18) Examine the filters and make sure the filter gaskets are completely under the filter clamp. Any
gapping will cause bypass and allow smoke through once the unit is running.
19) Close and latch the filter door.
20) Dust may have fallen into the filter ducts while changing filters. If an optional Fire
Suppression System has been purchased, then use the key switch to deactivate the system
for the initial start up. This will prevent a false trip while the dust is being blown out of the unit.
21) Rotate the Disconnect to the '1' or 'ON' position. This will restore power to the unit.
Copyright © Clean Air Industries , Inc.
Liberty WeldCell User Manual, August 2023
Page 58 of 66
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