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Chapter 8 Inspection and Maintenance
- 46 -
[WO-4841;JL4-V
・
VC-3
~
6-46]
4)
Suction hopper proximity switch (E2K)
If the proximity switch does not detect the full level, make a sensitivity adjustment of the
proximity switch by the following steps.
Step
Details of operation
1
Remove the materials in the collection hopper.
Turn ON the power circuit breaker on the control panel.
2
Confirm that there is no gap of 1mm or more between the end of the proximity
switch and the hopper sight glass.
If there is a gap between them, loosen the fastening screws (2 pieces) of the
proximity switch fitting bracket and adjust the distance between the end of
the proximity switch and the hopper sight glass to approximately 1mm, and
then fix them.
3
Remove the rubber cap at the back of the proximity switch.
4
Perform the following
①
,
②
and
③
operations while adjusting the
sensitivity adjustment screw with the attached screwdriver.
①
Adjust the sensitivity to a point where the sensor switches from ON to OFF
without material (Detection indication lamp turns OFF).
②
Adjust the sensitivity to a point where the sensor switches from OFF to ON
with material (Detection indication lamp turns ON).
③
Set the sensitivity adjustment screw at the middle point between the ON to
OFF point
①
without material and the OFF to ON point
②
with material.
NOTE:
Perform the sensitivity setting with the actually used material. And, when there are
various materials, the
①
,
②
and
③
operations should be performed with a light
material of appearance specific gravity.
5
Install the rubber cap removed in step 3.
Perform the material conveyance and confirm that the detection indicator
turns on.
Sensitivity
adjustment
screw
Rubber cap
(-side)
←―――②―――――――③―――――――①――→
(+side)
With material
Without material
ON (turns ON)
▲
OFF (turns OFF)
Setting
point
Detection indication lamp
Содержание JL4-4V-3~6
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