Yaskawa Varispeed-656 DC5 - Manual (Page 51)

5 MAINTENANCE AND INSPECTION
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5.4 PERIODIC MAINTENANCE OF PARTS
The VS-656DC5 is configured of many parts, and these parts must be operating properly in
order to make full use of the VS-656DC5 functions.
Among the electronic components, there are some that require maintenance depending on
their usage conditions. In order to keep the VS-656DC5 operating normally over a long
period of time, it is necessary to perform periodic inspections and replace parts according to
their service life.
When replacing parts, be careful not to drop any, such as screws, inside the VS-656DC5.
Failure to observe this caution may result in a short-circuit and a fire.
Periodic inspection standards vary depending the installation environment and usage condi-
tions of the VS-656DC5. The VS-656DC5’s maintenance periods are noted below. Keep
them as reference.
Note: Usage conditions are as follows:
Ambient temperature: Yearly average of 30 °C
Load factor: 80 % max.
Operating rate: 12 hours max. per day
Table 11 Part Replacement Guidelines
Part Standard Replace-
ment Period
Replacement Method
Smoothing capacitor 5 years Replace with new part. (Determine need
by inspection.)
Braker relays − Determine need by inspection.
Fuses 10 years Replace with new part.
Aluminum capacitors on
PCBs 5 years Replace with new board. (Determine need
by inspection.)
Cooling fan 2 to 3 years Replace with new part.