12.1 Maintenance and Inspection of Servodrives
Item Frequency
Procedure
Remedy
Clean Unit
Interior and
Circuit Boards
Yearly
Check for dust, dirt, and oil on
surfaces.
Clean with a cloth or
compressed air.
Loose Screws
Yearly Check for loose terminal-block
and connector screws.
Tighten any loose screws.
Defective Parts in
Unit or on Circuit
Boards
Yearly Check for discoloration, damage
or broken wires due to heat.
Contact your Yaskawa
representative.
Part Standard Replacement
Period
Replacement Method
Cooling fan 4 to 5 years
Replace with a new fan.
Smoothing Capacitor 7 to 8 years
Test and replace with a new capaci-
tor if necessary.
Relays
— Test and replace if necessary.
Fuse
10 years Replace with a new fuse.
Aluminum Electrolytic Capacitor
on Circuit Board
5 years Te st and replace with a new circuit
board if necessary.
12.1.2 SERVOPACK Inspection
The SERVOPACK contains highly reliable parts and does not require daily inspection. Always
inspection the SERVOPACK at least once a year. Be sure to check user settings prior to opera-
tion because we reset user constants to standard settings when we ship overhauled SERVO-
PACKS.
Table 12.3 Inspection Items
■ Guidelines for Replacing Parts
The following parts are subject to mechanical wear or deterioration over time. To avoid failure,
replace these parts at the frequency indicated in the following table.
Table 12.4 Parts Replacement
Note Operating conditions
Ambient temperature: Annual average of 30°C
Load factor: 80% max.
Operation rate: 20 hours/day max.
Be sure to check user settings prior to operation because Yaskawa resets user constants to facto-
ry settings when shipping overhauled SERVOPACKS.
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