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Further, check the following points for electric system for safety:
a) Power
supply
is
connected
properly. (See the Section
7 “Wiring and
Operating Methods
”.)
b)
No melting of controller fuse and no working of overcurrent protective function
c) Shorting
of
the
controller
external control signal input terminals. Closing of the terminals
according to external control signal (refer to the Controller Instruction Manual.)
d) Normal
magnet
(If
a)
–
c) are normal, subject individual magnets to the attraction test shown
above.)
(2) Vibration is found, although amplitude is insufficient.
[1] Imperfect power source (such as 100 V connection in spite of 200 V specification)
[2] Leaf spring mounting bolt is loosened.
[3] Tightening bolt of bowl etc. is loosened.
[4] Magnet clearance is too large.
[5] Omission of removal of fixtures used for transportation
(3) Amplitude is decreasing during use.
[1] Leaf spring is fatigued.
[2] Leaf spring mounting bolt is loosened.
[3] Leaf spring is damaged, and rust is found.
[4] Foreign substance is caught in the magnet clearance.
[5] Bowl tightening bolt is loosened.
(4) Unusual metallic noise
[1] Narrow clearance in magnet or entry of foreign matter
[2] Excessive
amplitude
[3] Interference of the cover with the vibrator
[4] Omission of removal of fixtures used for transportation
When you inform NTN of trouble condition with unknown cause, let them know the detail as far as
possible with reference to the above so that they can take a measure as soon as possible.
