Deldent JETPOLISHER 2000 Mode D'emploi page 13

Possible Cause
2. Blocked head.
3. Blockage in
air/powder system.
13
Test Procedure
water valve fully on
front panel. Depress foot
control with mode
switch in polishing mode
position and observe if
powder collects on the
fingertip held at right-
angles at approx. 1 cm
from the nozzle.
Disconnect head from
handpiece tubing and
check for powder
blockage in inlet air tube
to head, in nozzle and in
transparent air tube.
With handpiece removed
and water valve closed
depress foot control and
check if powder flows
from the disconnected
end of the handpiece air
tube.
Corrective Action
2000
and handpiece
connections. Correct
leaking connections.
Check if a hole has formed
in the transparent tubing of
head and replace if
necessary.
Remove transparent air tube. Using a fine
reamer or wire, clear the blockage and rinse
the head well with water. Dry thoroughly
with compressed air. Renew transparent air
tube. Disconnect handpiece components and
dean in an ultrasonic bath. Ensure free flow
of powder from the disconnected end of the
handpiece air tube prior to reassembling the
handpiece.
If not, check each section of the system for
leakages according to the following order.
Jetpolisher 2000
Invert the
powder is free flowing. If powder is caked or
lumpy, the whole system needs to be cleaned
as will be described under "Damp Powder"
below.
Disconnect the handpiece air tube from the
junction block inside the unit. Check if
powder flows from the junction block when
the unit is activated in the polishing mode. If
so the blockage is in the handpiece tubing
which should be checked for kinks and
flushed thoroughly with compressed air.
If no powder flows, disconnect air tube from
powder bottle outlet tube (air inlet tube in
bottle is directed downward, outlet tube
inside bottle is horizontal). Check if powder
flows form outlet tube. This indicates that
the blockage is in the junction block and can
be cleared with compressed air flushing and
drying.
If no powder flows from the outlet tube, the
blockage is in the inlet or outlet tube of the
powder bottle. In such a case, empty the
powder bottle of all powder. Disconnect the
powder bottle from the base of the unit by
releasing the two screws underneath the unit.
Rinse the bottle thoroughly and use
compressed air to thoroughly clear the inlet
and outlet tubes. Flush thoroughly with
water and dry carefully. Check all other air
ENGLISH
to check if