Daily Inspections; Maintenance And Inspection; Periodic Inspections - YASKAWA VS-626M5 Instruction Manual

13.1 Maintenance and Inspection

This section explains the maintenance and inspection methods for the Inverter and Converter.

13.1.1 Daily Inspections

Check the following items while the system is in operation.
Are there abnormal motor noises or vibration?
D
Is there any abnormal heat?
D
Is the ambient temperature too high?
D
Is the value displayed on the output voltage monitor higher than normal?
D

13.1.2 Periodic Inspections

Check the following items during periodic maintenance.
To prevent electric shock, turn OFF the power supply to the main circuit and check that the CHARGE indi-
cator and 7-segment display have gone out before performing maintenance operations.
Table 13.1
Area Component
External terminals, Unit
mounting bolts, con- mounting bolts con
nectors, etc.
Heatsink
Printed circuit boards
Inverter and
Converter Converter
Cooling fan
Power elements
Smoothing capacitor
Bearing noise
Vibration
Related to Related to
Bearings
Bearing temperature
Grease
Motor and
Operating status
Cooling Fan
Periodic Inspection Items
Check
Loose screws
Loose connectors
Build-up of dust and dirt
Accumulation of conductive dust or oil
S For abnormal noise and vibration
S Whether the cumulative operation time
exceeds 20,000 hours or not.
Accumulation of dust and dirt
Discoloration or odor
Abnormal noise or increase of noise level
Abnormal vibration
Abnormal temperature rise
No leakage
Normal operation
13 -3
13.1 Maintenance and Inspection
Corrective Action
Tighten.
Tighten.
Blow with dry compressed air of 39.2¢10
4 2
58.8¢10 Pa (4 to 6kg¡cm ) pressure.
Blow with dry compressed air of 39.2¢10
4 2
58.8¢10 Pa (4 to 6kg¡cm ) pressure. If dust and oil
cannot be removed, replace the board.
Replace the cooling fan.
Blow with dry compressed air of 39.2¢10
4 2
58.8¢10 Pa (4 to 6kg¡cm ) pressure.
Replace the capacitor or Unit.
Replace the bearings.
Remove the cause.
Remove the cause of fan halt or replace the fan if a
fault is found.
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