Maintenance And Inspection; Periodic Inspection - YASKAWA VS mini J7 Series Instruction Manual

7. Maintenance and Inspection

Periodic Inspection

Periodically inspect the Inverter as described in the following table to
prevent accidents and to ensure high performance with high reliability.
Location to
Check
Terminals, Invert-
er mounting
screws, etc.
Heatsinks
Printed circuit
boards
Power elements
and smoothing
capacitor
Cooling fan
7. Maintenance and Inspection
Check for
Improper seating or
loose connections in
hardware.
Buildup of dust, dirt,
and debris
Accumulation of con-
ductive material or oil
mist
Abnormal odor or dis-
coloration
Abnormal noise or vi-
bration
Cumulative operation
time exceeding
20,000 hours
Solution
Properly seat and
tighten hardware.
Blow with dry com-
pressed air at a pres-
sure of 39.2 × 10
4
58.8 × 10
Pa, 57 to
85 psi (4 to 6kg/cm
Blow with dry com-
pressed air at a pres-
sure of 39.2 × 10
4
58.8 × 10
Pa, 57 to
85 psi (4 to 6kg/cm
If dust or oil cannot be
removed, replace the
Inverter.
Replace the Inverter.
Replace the cooling
fan.
4
to
2
).
4
to
2
).
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