2 maintenance inspection, Maintenance inspection – Yaskawa Varispeed-656 DC5 System Regen Converter User Manual
Page 20
VS-656DC5 Enclosure Installation Manual
18 - 23
6.2 Maintenance Inspection
Perform inspection according to the schedule shown in
.
Table 6.1: Maintenance Inspection Items
Item
Name
Inspection
Item
Inspection Period
Content
Daily
Monthly
Yearly
Power
ON
Power
OFF
Gen
eral
Bolts/Screws
Electrical Con-
nection
–
Y
–
–
Y
Tighten with
wrench or
screwdriver
Cable
Insulation
Damage
–
Y
–
–
Y
Replace
Protective
Conduit
Electrical Con-
nection
–
Y
–
–
Y
Replace
Bushing,
Insulation
Cover
Damage,
minute Crack-
ing
–
Y
–
–
Y
Repair or
replace.
Mach
in
e
Cutoff
Switch
Smooth Open/
Close Action
–
Y
–
–
Y
Replace
Molding Dam-
age
–
Y
–
–
Y
Circuit
Breaker
Smooth Open/
Close Action
–
Y
–
–
Y
Molding Dam-
age
–
Y
–
–
Y
Convertor
Cooling Fan
Abnormal
Noise/Vibra-
tion
–
Y
–
Y
–
Replace fan.
Excessive
Cumulative
Run Time (20k
hours)
–
Y
–
Y
–
Exchange
Fan (Roof
Installed)
Abnormal
Noise/Vibra-
tion
–
Y
–
Y
–
Excessive
Cumulative
Run Time (20k
hours)
–
Y
–
Y
–
Bu
s
Vertical Bus
Horizontal
Bus
Temperature
Rise
–
Y
–
Y
–
Discover cause.
Insulation
Cover Damage
–
Y
–
–
Y
Repair or
replace.
Loose Bolts
–
–
Y
–
Y
Tighten