(©January, 2008)
Air Technology Systems, Inc.
BNB Ultrasonic Humidifier Installation, Operation & Maintenance Manual
5-3
5.2.1 Air Filter
1) Stop the humidifier.
2) Loosen and remove the filter case mounting screws (2 Pcs.)
at the lower front of the humidifier.
Photo 1
3) Pull out the filter case, remove the stopper
and remove the filter.
Photo 2
4) Wash the filter media with clean water.
5) Lightly shake off excess water and dry it well in the shade.
6) When the filter is dried, put it back in the filter case, install
the stopper and install the filter case in the humidifier.
7) If the filter is seriously clogged and cannot be cleaned by
washing with water, or if it is seriously deteriorated, it should be
replaced with a new one.
5.2.2 Water Tank Interior and Electrical Parts
1) Stop the humidifier, set the power supply circuit breaker (main
switch) to OFF and close the water supply valve.
2) Remove the plug from the drain pipe and drain the water tank.
After draining, re-install the plug securely.
3) Remove the the water supply piping. Be sure to use two
wrenches to prevent the body of the compression fitting on the
humidifier from turning.
Photo 3
4) Loosen and remove the four mist guide cover mounting
screws (4 Pcs. knurled), on the side of the humidifier.
Photo 4
5) Loosen the screws (1 Pc. or 2 Pcs.), at the front of the
humidifier and remove the mist guide cover.
6) Loosen and remove the two air flow guide (water tank cover)
mounting screws. Remove the air flow guide and the check
water tank interior for contamination.
Photo 5
7) Remove the screws (4 Pcs.) holding the electrical access
cover.
Photo 6
8) Remove the electrical access cover, inspect the interior and
check the following points:
No water leakage from the solenoid valve joint.
No discoloration, deformation or deterioration of printed
circuit board.
No damage to electrical wires or cables.
No abnormality of parts.
