129
Maintenance and Inspection
Chapter 8
P
ERIODICAL
I
NSPECTION
M
AINTENANCE
AND
I
NSPECTION
C
HAPTER
8
8.3 Periodical Inspection
This section explains the periodical inspection of the welding power source. Check the items in the table below every three
(3) to six (6) months.
•
Before performing maintenance and inspection, read the instructions in "8.1
-
Precautions for Maintenance and Inspection" and "8.2
-
Daily Inspection".
CAUTION
•
When cleaning the welding power source, do not expose the cooling fan directly to
compressed air.
Otherwise powder dust may get inside the cooling fan. Also the cooling fan may rotate
at high speed due to compressed air, resulting in wearing of the bearing.
Periodical inspection item
Inspection work
Grounding wire
•
Refer to the description for the same item in "8.2 Daily Inspection".
Each cable
(Primary power cable for facility side, cables
for base metal side/torch side, torch cable,
voltage detection cable, etc.)
Welding torch
•
Check that there is no deterioration, damage or other abnormality in consumable parts of
the welding torch. Abnormality in consumable parts can prevent smooth wire introduction.
Cleaning inside the welding power source
•
Blow with dry compressed air from the front slit (ventilation hole) to the back side to
remove dust inside the welding power source.
Dust accumulating on the heat sink of transistor and rectifier may prevent heat radiation,
adversely affecting the transistor. Also, accumulation of dusts between the winding of
transducer could deteriorate insulation.
Compressed air
