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for a period of time.
7.
The Operations of the Instrument:
a)
To switch on the joint power supply on the electric board and press the button of
“START” for operation Please test-detect the sample draw points, iron fragments, or the
attached parts for detection by the instrument as test operation. Make sure that the
instrument works normally only if it alarms and the conveyer belt stops in the process of
trial detection.
b)
The object to be detected should be put on the conveyer belt lightly if the instrument is
operating properly. If there is nothing wrong with the object being detected, it will pass
the detection instrument. The counter on the control board will switch from “0” to “1”,
indicating that 1 detected object is up to the standard.
c)
The object to be detected should be put on the conveyer belt lightly if the instrument is
operating properly. The instrument will alarm automatically if broken needles and iron
nails, etc. are detected among the object. The object will hence be returned to the front of
the operator. The counter on the control board will not display anything. The disqualified
object should be taken away. Press the button of “START” again for the next operation.
d)
The exact location of the iron fragments detected among the object should be found and
taken away. Repeat the detection to make sure there is no further fragments remain in it.
It might be possible that there are 2 to 3 iron nails and fragments among the object. The
repetition of the detection can ensure the safety.
e)
There might be wrong judge due to outside interference when the instrument is in
operation for detection. So a reconfirmation is required for the product if there finds a
warning signal.
8.
Points for Attention:
a)
Check up on the conveyer belt frequently to make sure that there are no remains of the
broken needles, rust, iron fragments, trivial iron tips other metal fragments, and greasy
dirt there. Special attention should also be paid to the reverse side of the belt to see
whether it is clean or not. To ensure the cleanness of the belt, it is advised to use wet
towels, detergents, and scaling to clean the belt.
b)
The sensing devise on the conveyer belt should be detected as it has strong magnetic
performance, which might be adhered to needles or other metal fragments. Rubberized
fabric or other methods are expected to use in order to clean the sensing device so as to
make an accurate judge during the next operation.
c)
The instrument adopts the theory of electromotive force. It makes the detection of the
instrument possible that the iron materials will cause sensing when they are in motion in
the magnetic field arisen by the detection instrument. The sensitiveness of the vertical
motion of the trivial needle tips that are parallel with the motion direction of the
magnetic line force is larger than that of the horizontal one. There exists different sensing
of detection towards different directions of the needle tips.
Simple and Easy Remedy of the Malfunctions:
Fault Phenomena
Causes
Solutions
