A 7 Malfunctions - KaVo K-POWERgrip EWL 4941 Operating Instructions Manual

K-POWERgrip EWL 4941.

A 7 Malfunctions

Repair and maintenance work on the
electrical part of the unit may be per-
formed only by specialists or by persons
who have been trained in the factory and
have been made aware of the safety regula-
tions. Before opening the housing parts,
disconnect the mains plug or isolate the
unit completely from the power supply so
that there is no power to the unit.
F • K-POWERgrip handpiece no longer
rotates or stops from time to time.
C • K-POWERgrip handpiece EWL 4941 is
blocked, possibly due to open chuck
system.
R • Close chuck correctly with inserted tool
(see A 5.1).
C • Break in connecting cable.
R • Check connecting cable incl. plug
devices and if necessary replace
(see A 6.3).
C • Fault in the electrical system of
K-POWERgrip EWL 4941controller.
R • Check controller or have repaired.
F • Tool is no longer adequately retained
in the chuck.
C • Diameter of tool shaft does not agree
with chuck.
R • Use chuck or tool with appropriate
diameter.
C • Chuck has become loose.
R • Insert chuck correctly (see A 6.1).
C • Chuck is worn.
R • Replace chuck (see A 6.1).
F = Fault C = Cause R = Rectification
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