DENTSPLY Cavitron JET Plus Installation And Service Manual page 38

SECTiON 18:
G137 Cavitron
This troubleshooting section is meant for use by qualified Cavitron
SymPTOmS
Abnormally high bleed air with
powder leaking.
(Foot Pedal not activated)
Nozzle and/or handpiece tubing
is clogged.
Powder bowl cap cannot be
unscrewed.
Water spray pattern from
the Air Polishing insert is not
uniform.
JET Plus Troubleshooting and Analysis
®
CAuSES
1. The pinch valve assembly is
leaking air and not fully sealing
the red pinch tube.
2. Non-Cavitron red pinch tubing
®
installed in the unit.
1. Oil or moisture is in the air supply
to the unit.
2. Bleed air is set too low.
3. Y-Connector in the unit is clogged
with powder.
1. Cavitron JET Plus unit is still
®
powdered up.
2. Powder bowl chamber is not fully
depressurized.
3. Powder bowl internal chamber
filter is clogged.
4. Main air solenoid not sealing when
the unit is powered down.
1. The concentric tubes of the Air
Polishing Nozzle insert are
clogged with dirt or are off
center.
Service Technicians.
®
CORRECTivE mEASuRES
1. Return the Cavitron
for factory certified service.
2. Only Cavitron
in the unit. Replace tubing. P/N 61631.
1. a. Have the office air compressor serviced.
b. Return the Cavitron
DENTSPLY for factory certified service.
2. Connect a calibrated Bleed Air gauge and adjust
the needle valve to specifications.
3. Clean out the Y-Connector with a cleaning wire.
1. Switch off the power and allow the bowl chamber
to depressurize.
2. Allow sufficient time (about 10 seconds) for the
powder bowl to depressurize.
3. Remove the tubing on the bowl bottom L-Nozzle.
Allow the bowl to depressurize then disassemble
the bowl assembly and clean the filter.
4. a. Replace the Air Manifold assembly.
b. Return the Cavitron
DENTSPLY for factory certified service.
1. a. Insert a cleaning wire in the front of the nozzle,
gently rotate the center tube around to
dislodge any dirt with the water spray.
Un-concentric tubes can be corrected by
gently bending the outer tube.
b. Replace the Air Polishing insert with a new
one. P/N 63740.
36
, cont
JET Plus unit to DENTSPLY
®
red pinch tubing should be installed
®
JET Plus unit to
®
JET Plus unit to
®