(©January, 2008)
Air Technology Systems, Inc.
BNB Ultrasonic Humidifier Installation, Operation & Maintenance Manual
5-8
5.4.3
Replacing the Transducer and Nebulizer
Print Plate
1) Referring to Section 5.4.1, “Preparation for Repairs” on page
5-7, take the water tank to a convenient place for working.
2) Loosen and remove the water tank back panel mounting
screws (2 Pcs.) and remove the panel portion.
Photo 16
3) When replacing the transducer, remove the two transducer
lead wires, (yellow and orange).
Photo 17
Note
Grasp the terminals when removing wires. Never pull the
lead wires.
4) Using a 7/32” nut driver, remove the transducer mounting
screws (2 Pcs.) and remove the transducer, spacer and o-ring.
Save the screws to mount the new part.
Photo 18
5) Clean the spacer, o-ring groove and o-ring.
6) Assemble the new transducer with the spacer and o-ring and
install them with the saved mounting screws.
Photo 19
Notes
Ensure the o-ring is not damaged. If it is damaged, re-
place it with a new one.
Carefully align the transducer’s rubber packing in the in-
dent in the bottom of the water tank to prevent leakage.
The mounting screws must be evenly tightened. Do not
overtighten.
7) Connect the lead wires to the plate. The colored lead wires
must be inserted as shown on the plate. (Orange wire to ORG,
Yellow wire to YEL)
8) To replace the nebulizer print plate, remove the four wires
connected to the terminals from the plate to be replaced.
9) Using a 7/32” nut driver, remove the plate mounting screws
(2 Pcs.) and remove the plate. Save the screws to mount the
new part.
Photo 20
10) Install the new plate together with the silicon sheet provided
using the saved mounting screws.
11) Connect the nebulizer print plate interconnecting wires
(black to H, white to G) and transducer lead wires (orange to
ORG, yellow to YEL)
Note
When the nebulizer print plate is replaced, it is recom-
mended that the transducer be replaced also.
12) Referring to Sect. 5.4.2, “Re-assembling” on page 5-7, re-
assemble by reversing the above procedure.
