9.5 Powder Bowl Maintenance
Turn the System OFF.
Allow the powder bowl to depressurize and unscrew
the Powder Cap.
Empty powder from the bowl and use the high suction
to remove any residual powder in the bowl.
Turn the System ON and check for strong air flow
from the center tube of the powder bowl.
If no or low air flow is present, turn the System OFF.
Unscrew the knurled ring at the bottom of the bowl
assembly and remove the fitting assembly.
Using the JET Air Polishing Insert nozzle cleaning wire
tool, clean clogged powder from the fitting assembly.
Turn the System ON and check for strong air flow.
Turn the system OFF.
Check that the o-ring is properly positioned in the
groove of the fitting assembly and reassemble the
fitting assembly to the bowl. Tighten knurled ring.
Place powder bowl into System.
Fill the powder bowl with fresh prophy powder and test
for flow and leaks.
Remove residual powder from thread on the cap and
bowl with a soft, dry cloth.
Although service and repair of the Cavitron JET Plus
Combination System should be performed by DENTSPLY
personnel, the following are some basic troubleshooting
procedures that will help avoid unnecessary service calls.
Generally, check all lines and connections to and from
the System. A loose plug or connection will often create
problems. Check the settings on the System's controls.
10.1 Troubleshooting Guide
System will not operate: No Power ON indicator
Check that the Main Power Switch is in the ON (l)
position, and that the detachable Power Cord is fully
seated in the receptacle on back of System.
Check that the system's power cord plug is fully seated
in an approved AC wall outlet.
Check that the wall outlet is functional.
System will not operate: Power ON Indicator is
If the office has more than one Foot Control, test
each to ensure that the proper Foot Control is being
used. With a handpiece and insert installed, depress
the Foot Control to the first position. The system
should dispense water. If none of the Foot Controls
operate the system, continue to the next step.
Resynchronize one Foot Control to the system (see
Section 6.10 Foot Control Synchronization).
System operates: No water flow to insert tip
Assure that handpiece lavage control is properly
Check for clogged insert. Replace insert if necessary.
Check that dental office water supply valves are open.
If the system is connected to DualSelect Dispensing
System, check that fluid level in the selected bottle is
sufficient. Make sure valves are open when using
external water source.
Check that the water line filter is clean. Replace
filter if needed.
System operates: No insert cavitation
Check that the Power Level Control is not in Rinse
Check the insert for damage and that it is properly
installed in the handpiece.
Check that the handpiece is properly installed to the
Verify that the soft nozzle grip is flush with the hard
plastic of the insert port.
Turn the system's Main Power Switch to the OFF (0)
position. Wait 5 seconds and turn the system back ON.
If problem still exists, replace both "AA" batteries in
Foot Control with new "AA" batteries (Refer to Section
6.9) or connect the Auxiliary Foot Control Cable.
System operates: Purge Mode will not function
– Indicator flashing
Check that there is no insert in the handpiece.
Check that handpiece is properly installed to the cable
System operates: Service Indicator blinking
Fast Blinking (3 blinks per second)
– Indicates improper set-up
1. If insert is in the handpiece, remove. Verify the
handpiece is properly seated and hold the foot
control for 2 seconds. If blinking stops, the system
is ready for use. If blinking remains, continue to the
2. Attach a NEW handpiece and hold Foot Control for 2
seconds. If blinking stops, the system is ready for
use. Discard the old handpiece or return if within
warranty. If blinking remains, continue to the next