
3.CLEANING MAINTENANCE B-65382EN/02
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3 CLEANING
WARNING
When performing cleaning, turn off the power to the
machine, ensure that the motor does not move
freely, and be careful not to be electrically shocked.
Reasons for cleaning
The linear motor has a gap of 0.5 mm (nominal) between the coil
slider and magnet plate. If foreign matter is caught in the gap, the
motor can fail. Moreover, a buildup of oil can adversely affect the
motor. To prevent trouble caused by dust and oil, clean the linear
motor periodically.
If an axis with a linear motor mounted is not shielded or is
insufficiently shielded, magnetic dust can be attracted to or near the
top surface of the magnet plate. If such dust is left, it can be caught in
the gap between the coil slider and magnet plate, resulting in a damage
to the motor in the worst case. So, for an axis with a structure that can
catch dust, cleaning must be performed frequently.
Method of cleaning
Magnetic dust attached onto the surface of the magnet plate can be
removed relatively easily by scraping off the dust toward the stroke
end of the magnet plate with a spatula made of hard rubber.
Wipe off any oil attached onto the coil slider or magnet plate softly
with alcohol. Do not use a large amount of alcohol and do not rub the
surface of the coil slider and magnet plate intensely. Otherwise, the
protective coating on the surface can be adversely affected.
When a low-viscosity fluid such as a coolant adheres to the magnet
plate or when relatively-small non-magnetic chips adhere to it,
blowing with compressed air may be sufficient.
CAUTION
Do not use an agent other than alcohol. Otherwise,
the resin used for the motor can be eroded,
resulting in a damage to the motor.