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TRiTOn
™
ADVAnceD DenTAl SySTeMS
®
2025M | 2025M/DV | 2025M/AR
38
65-2025M Rev. B
6.3 Troubleshooting the Ultrasonic Handpiece System
Theory of Operation –
Electrical power (115volt/230volt) is supplied from the terminal block and
is sent to the transformer where it is reduced to a 24 volt AC supply to the Newtron ultrasonic
module. The ultrasonic module is then connected to a wire harness that is connected to a
potentiometer which allows changes to the power intensity of the handpiece (figure 2.5.1). Two
wires run from the module through the tubing up to the ultrasonic handpiece where it creates
vibration of the internal piezo ceramic in the handpiece. The tubing also contains a water line that
allows water coolant spray to be used on the tip.
Ultrasonic Handpiece or instrument Does not Operate
- Ensure US Tip is tight on Handpiece.
- Verify the dental unit has air pressure at 80 psi and that the foot control is working correctly.
- Verify lock lever on side of holder is pointing straight down to floor, and that ball/toggle actuator in the holder is
exhausting correctly when handpiece is removed from holder.
- Check circuit breaker for the ultrasonic located on the back of the dental unit is
pressed in.
- Check handpiece pressure gauge is reading between 60 to 80 psi when
pressing the foot control with the ultrasonic handpiece removed from the holder.
If no reading, make sure the correct adjustment stem on the control block portion
for the Ultrasonic [marked “US”] is open sufficiently to allow the air pressure
to reach the air/electric switch. To open, turn the stem in a counter-clockwise
direction to fully open. This ensures the Normally Open Air Electric Switch is
receiving pressure from control block.
- Check continuity output from Newtron Module (5.0 v AC @ 100% intensity),
Transformer (24v AC), Terminal Block (120v AC) (Figure 6.2a).
Satelec Ultrasonic notes
- Testing line continuity using a multimeter will determine broken wires in the tubing (Figure 6.2a, 6.2b)
02/24/2014, S:\Technician Guide\Ultrasonics Tech Guide.docx
Threaded stem on handpiece broken/worn where tip attaches.
o
Cannot be repaired, replace handpiece.
Replace if required (P/N 90-5414A).
Satelec Ultrasonic Notes:
Units previous to 08/04 and after 07/07 are Orange and Black wires. Later units will have
additional Purple wire to same location as black connection to panel.
Units between 08/04 and 07/07 are Red and White wires.
Testing line continuity using a multi meter will determine broken wires in the tubing
[See
Figure 1, Figure 2, Figure 3
].
Strain relief size changed on 06/22/06 from ¾” to 7/8” 95-0123.
Figure 1. Figure 2.
Figure 3.
Figure 6.2a
Figure 2.5.1
Figure 6.2b
02/24/2014, S:\Technician Guide\Ultrasonics Tech Guide.docx
Threaded stem on handpiece broken/worn where tip attaches.
o
Cannot be repaired, replace handpiece.
Replace if required (P/N 90-5414A).
Satelec Ultrasonic Notes:
Units previous to 08/04 and after 07/07 are Orange and Black wires. Later units will have
additional Purple wire to same location as black connection to panel.
Units between 08/04 and 07/07 are Red and White wires.
Testing line continuity using a multi meter will determine broken wires in the tubing
[See
Figure 1, Figure 2, Figure 3
].
Strain relief size changed on 06/22/06 from ¾” to 7/8” 95-0123.
Figure 1. Figure 2.
Figure 3.
02/24/2014, S:\Technician Guide\Ultrasonics Tech Guide.docx
Threaded stem on handpiece broken/worn where tip attaches.
o
Cannot be repaired, replace handpiece.
Replace if required (P/N 90-5414A).
Satelec Ultrasonic Notes:
Units previous to 08/04 and after 07/07 are Orange and Black wires. Later units will have
additional Purple wire to same location as black connection to panel.
Units between 08/04 and 07/07 are Red and White wires.
Testing line continuity using a multi meter will determine broken wires in the tubing
[See
Figure 1, Figure 2, Figure 3
].
Strain relief size changed on 06/22/06 from ¾” to 7/8” 95-0123.
Figure 1. Figure 2.
Figure 3.
