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MAINTENANCE / INSPECTION
●
Broken Heater or Sensor
①
Open the handpiece.
1. Retract the vacuum pipe to its shortest
length.
2. Remove the three screws holding the
handpiece together.
3. Move the tube downward.
4. Remove the pipe from the protruding
portion of the handle.
CAUTION
Quartz glass and heat insulation are inside the pipe.
Be careful not to drop or lose these items.
5. Disconnect the heater sensor connector
and remove the heater.
CAUTION
Do not apply excessive force to the vacuum pipe.
②
Measure the resistance value.
1. Measure the resistance value (a) of the
sensor. The correct value is 0
Ω
¶.
2. Measure the resistance value (b) of the
heater. The correct values are approx-
imately 33
Ω
(±10%) (100-120 V), 85
Ω
(
±10%) (220-240 V) at room temperature.
If the resistance value is incorrect, replace
the part.
1. Unplug the power cord from the power receptacle.
2. Remove the fuse holder.
3. Replace the fuse.
4. Put the fuse holder back in place.
●
Replacing the Fuse
Sensor connector
Heater connector
a
b
15