DFD6361-Maintenance.pdf - 第457页

E-21 Procedur es for cl eanin g the bla de break age detect or sens or Step No. Do This 4 From the MAIN MENU s creen [screen 0.0] , press the <F4 > button to call up the BLADE MA INTENANCE screen [screen 4.0] . 5 P…

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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.
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Procedures for cleaning the blade breakage detector sensor
Step No. Do This
4
From the MAIN MENU screen [screen 0.0], press the <F4>
button to call up the BLADE MAINTENANCE screen
[screen 4.0].
5
Press the <F2> button to call up the BLADE BREAKAGE
DETECTOR ADJUSTMENT screen [screen 4.2].
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Procedures for cleaning the blade breakage detector sensor (Continued)
Step No. Do This
6
Check whether the maximum sensitivity comes between or equal
to 90% and 99%.
- When it is lower than 90%;
Clean the sapphire glass surface again.
- When it is still lower than 90% after repeating cleaning;
Adjust the amplifier of blade breakage detector.
See the section 1-2-3 of this chapter, [Adjusting the amplifier of
blade breakage detector]
- When it is 100%;
Adjust the amplifier of blade breakage detector.
See the section 1-2-3 of this chapter, [Adjusting the amplifier of
blade breakage detector]
Continued in the next section.