131
Maintenance and Inspection
Chapter 8
P
ERIODICAL
R
EPLACEMENT
P
ARTS
M
AINTENANCE
AND
I
NSPECTION
C
HAPTER
8
8.4 Periodical Replacement Parts
This section explains the parts to be replaced periodically.
•
Printed circuit board PCB7 (
10.1
-
Parts List)
The printed circuit board PCB7 inside the welding power source has a high voltage electrolysis capacitor.
The high voltage electrolysis capacitor supplies stable direct current to the inverter circuit, but its performance will
degrade year by year.
If the printed circuit board PCB7 is used for an extended period without being replaced, it may result in performance
degradation of the welding power source and damage of the high voltage electrolysis capacitor or other parts.
It is recommended to replace the printed circuit board PCB7 every five years.
For replacement of the printed circuit board PCB7, contact your dealer.
•
Others
Fan, relay, and rated power supply has a certain lifetime; they are recommended to be replaced once in approximately
five years.
When replacement of fan, relay, and rated power supply is necessary, please contact your dealer.
CAUTION
•
Even if the part is replaced by the user, please contact your dealer.
•
When inserting the connector to the printed circuit board, check that the number
printed on the printed circuit board is the same as the number indicated on the
connector, and insert firmly to the end.
•
Do not turn on the power switch of welding power source when the connector of printed
circuit board is disconnected.