40
Wire
feeder
Wire enter
nozzle
Wire guiding
nozzle
Wire output
nozzle
If can adapt to the wire
types(distinguish aluminum wire and
steel wire)
Produce chip&scrap,
abnormal abrasion of
wire enter hose
wire feeding and electric
arc unstable
If the hose center fit for groove center
of wire feeder roller
Dislocation may cause
the production of
chip&scrap and unstable
electric arc
If powder and sweeps stocked in
nozzle
Clear chip&scrap,
sweeps, find out the
reason then exclude it
Wire feeder
roller
If the welding wire diameter fits to the
nominal diameter of wire feeder rolls
Result in the production
of powder, blocking of
wire feed hose and
unstable electric arc. An
exception happened,
replace with a new one
If groove of wire feed rolls blocked
Rolling
bearing
wheel
If is damaged
Result in wire feed and
electric arc unstable
cable
If the connection is reliable and firm
The insulation part is broken or not
If there’s disconnection
Prevent leakage, ensure
safety
Security warning:
When performing maintenance or overhaul cut off power
distribution box and ensure safety of the environment, otherwise,
may cause electric shock, burns, or more serious and life threatening
injuries
8.2
Early diagnosis of abnormal phenomena
When some abnormal phenomena happened, such as not welding, arc instability,
abnormal phenomenon such as welding effect is not good, don't make a judgment of the
failure of welding machine too early. Welding machine is usually normal, but often some
external reasons can cause the occurrence of the above phenomenon. For example: the fuse
blown, loose parts, forgetting to switch on, parameter setting error, cable wire broken, gas
tube rupture, parent metal surface state. Before making a fault report, please check the
documentation because many problems are easy to solve. For wire feeding machine and
welding torch part please refer to the corresponding welding abnormal early diagnosis table
for inspection and maintenance.
