DFD6361-Maintenance.pdf - 第455页

E-19 Procedur es for re moving the bl ade bre akage detec tor (Conti nued) The procedures describe d below takes the wheel cover of th e spindle 1 for exampl e. Step No. Do This 1 Press the <Sy stem Initial> button…

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1-2-1. Removing the blade breakage detector
Position of the blade breakage detector
The illustration below shows the location of the blade breakage detector.
Blade breakage detector
Procedures for removing the blade breakage detector
WARNING
If your fingers or hands are placed under a rotating spindle, they may
be caught or cut off.
Before opening the splash cover, visually make sure from outside of
the splash cover that the spindle stops completely. Also, do not
position your fingers or hands beneath the rotating spindle.
CAUTION
The fiber of the blade breakage detector is made of plastic. If the
fiber is broken when it is bent, the blade breakage detector does not
function.
In cleaning the sensor section, use care not to bend the fiber.
E-19
Procedures for removing the blade breakage detector (Continued)
The procedures described below takes the wheel cover of the spindle 1 for
example.
Step No. Do This
1
Press the <System Initial> button to effect system initialization.
2
From outside of the splash cover, visually make sure that the
spindle is completely stopped.
3
Turn OFF the wheel coolant water supply.
4
Press the <Wheel Cover> button to open the wheel cover with
the BLADE BREAKAGE DETECTOR ADJUSTMENT screen
[screen 4.2].
5
Open the splash cover.
6
While pushing down the release lever, slide the blade breakage
detector to remove it from the wheel cover.
Sliding direction
Continued in the next section.
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1-2-2. Cleaning the blade breakage detector sensor
Procedures for cleaning the blade breakage detector sensor
CAUTION
- The fiber of the blade breakage detector is made of plastic. If the
fiber is broken when it is bent, the blade breakage detector does not
function.
In cleaning the sensor section, use care not to bend the fiber.
- If the maximum sensitivity of the blade breakage detector is set at
100%, a malfunction may occur in the detector.
Adjust the maximum sensitivity so that it comes between or equal to
90% and 99%.
Step No. Do This
(Continued from the previous section)
1
With a cotton swab moistened with alcohol, wipe the blade
breakage detector sensor sapphire glass surface clean.
ÿ
Fiber cable
Sapphire glass
2
Place the blade breakage detector back to its original position.
3
Rotate the adjustment knob clockwise until the sensor block
reaches the upper end. Then restore the lever of the blade
breakage detector sensor to its normal position.