142 Preventive Maintenance
Regular inspection
The following table contains an overview of the most relevant inspection checks for the
drive. ABB recommends that inspections be carried out whenever the drive has been shut
down, i.e., to replace components or for any other field intervention.
1 Inspection and replacement of filter mats depend on the ambient air quality, i.e. dustiness, humidity. Monthly
filter inspection recommended, 3 months interval for filter replacement recommended.
Preventive replacement schedule
The following table highlights the recommended replacement intervals for drive
components, starting from the completion date of the commissioning².
2 The start date for the preventive replacement schedule is the commissioning completion
date or 2 years after delivery, whichever comes first.
Inspection action Interval
[years]
Inspection
Type
Filter mats (replacement) 0.5¹ R
Power Module R1-R9 1 I or R
Transformer 1 I or R
Optical fibers 1 P
Cable connections, bolted connections 1 I
Dustiness, Corrosion and overheating 1 I
Software, hardware upgrades 2 I or P
Spare parts 2 P
Auxiliary voltage verification 1 I or P
Insulation test 4 P
Safety circuits 1 P
Isolator knife switch for Manual bypass 1 I or P
Contactor for auto bypass (Non ABB brand) 1 I or P
Contactor for auto bypass (ABB brand) 1 I or P
Years from commissioning 2 4 5 6 8 101214151618
Cooling fans (no
redundancy)
RRR R
Cooling fans (redundant
setup)
RR
Power Module R1-R9 RR
PCBA, power supplies R
Control HW Batteries RRR
UPS batteries RR RRRRR RR
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