(©January, 2008)
Air Technology Systems, Inc.
BNB Ultrasonic Humidifier Installation, Operation & Maintenance Manual
3-1
3.0
TRIAL OPERATION
3.1 Initial Operation
3.1.1 Initial Operation Checklist
For new installations, ensure the unit is ready to operate by going through the following checklist prior to start-up:
1. The humidifier is installed horizontally and level.
2. No obstacle is within 15 feet in front of the atomizing direction.
3. The electrical wiring is correctly connected.
4. De-ionized or reverse osmosis water supply is used.
5. The water supply piping and overflow piping are correctly connected and secured.
6. All parts are correctly installed.
After the above items are checked, the trial operation may begin.
3.1.2 Procedure for Initial Operation
1. Open the water supply valve allowing water to flow to the unit.
2. Set the humidistat to a desired humidity level.
3. Turn the main power source switch (circuit breaker) to ON.
4. If the humidistat is ON, power is supplied to the humidifier, the water supply is started and when
the required water level is reached, atomizing starts.
5. If the operation does not start, increase the set point of the humidistat.
After operation is started, check the following items on a regular basis:
Atomizing is visible through all the mist blow tubes.
Check the humidifier parts, overflow pipe and other piping for signs of leaking water.
By operating the ON/OFF contact of the humidistat, ensure that it is interconnected properly and
controls operation of the humidifier.
Check to see that the mist diffusion is good and that objects in the room or any obstacle is not directly
exposed to the mist.
After the above items are checked and if no trouble is found, the trial operation is completed.
A screw for adjusting air volume to the mist guide tubes is provided on the side of the humidifier. It is set to
“MAX” at the time of shipment. Normally it is not necessary to change this setting. If it is desired to change
the atomization including mist diffusion or if coarse particles are observed due to voltage fluctuation, the
screw should be adjusted. When the screw is changed from “MAX” to “MIN” the decrease in effective
nebulizing capacity is about 20%.
3.1.3 Purge the Water Line
The first time the unit is operated, metal shavings or debris that may form during the installation process will be
flushed through the supply water piping. After performing the steps in Section 3.1.2 above, follow the steps below
to purge the water line:
Set the main switch of the power source to OFF for safety.
Close the water supply valve.
Remove the water tank drain plug and drain the tank. After draining, securely install the plug.
