— 13-2 —
13.2. Maintenance Check
13.2.1. Motor
l
Since a Megatorque Motor does not have any parts which will wear out, a daily maintenance check
should be enough.
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The table below shows the maintenance check and intervals. The checking interval shown in the
table is reference only. It should be decided accordingly to the actual use conditions.
Caution : Do not disassemble the Motor and resolver. If disassembling Motor is
necessary, contact your local NSK representative.
Table 13-1 : Motor maintenance check
Item
Checking interval
How to check
Remarks
Vibration/Noise
Daily
•
Touching and hearing
•
Watch daily changes
Appearance
According to environment
•
Wipe off dust/slag
•
Blow off slag
–
Insulation
Once/year
•
Resistance test
(Motor coil and ground earth)
(Disconnect Driver Unit)
•
Resistance
≥
10M
Ω
Full check
According to Motor condition
•
Overhaul (NSK)
–
13.2.2. Driver Unit and Cable Set
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As a Driver Unit does not have any contact point and highly reliable semiconductors are used, the
daily check is not necessary. Checkings as shown in Table 13-2 are necessary at least once a year.
Table 13-2
Item
Interval
Check point
Remarks
Retighten screws
Once/year
•
Terminal block screw.
•
Connector fixing screw.
–
Cleaning
Once/year
•
Remove dust or contaminants
inside of Driver Unit.
–
Cable check
Once/year
•
Check for damages and cracks
of cables.
•
When the cable is forced to bend or
twist, checking frequency should be
increased.
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