127
MAINTENANCE
F
The CoolFlex High
Speed Drill overheats.
♦ Tubing set is not completely
primed.
♦ Prime tubing set by following the
priming procedure (See “ E9414
Tubing Set with Recirculation
only:” on page 69.
A MicroChoice, Group
2 handpiece overheats.
♦ Worn bearings in the bur guard.
♦ Moisture in the handpiece.
♦ Reference “4.5 Bur Guard Testing
Procedure” on page 131. If
resistance is noticed, return bur guard
for service. If no resistance is
noticed, return handpiece for service.
♦ Resterilize the handpiece according
to sterilization parameters and drying
times, reference “4.1.5 Sterilization
Information” on page 123.
Leakage occurring at
the tubing handpiece
cassette and handpiece
interface.
♦ Handpiece cassette not
completely or incorrectly
attached to the handpiece.
♦ Remove the tubing handpiece
cassette from the handpiece and
reinstall. If leakage still occurs,
replace with a new tubing set.
Symptom Possible Cause Corrective Action
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