Thermal Arc ARCMASTER 185 AC/DC, Руководство по эксплуатации, Страница: 47 / 74

ARCMASTER 185 AC/DC
Feb r ua r y 20, 2006 10-1
SECTION 10:
BASIC TROUBLESHOOTING
WARNING
The r e a r e ext r emely dange r ous voltages and powe r levels p r esent inside this p r oduct. Do not attempt to
open o r r epai r unless you a r e an acc r edited The r mal A r c Se r vice Agent and you have had t r aining in powe r
measu r ements and t r oubleshooting techniques.
If majo r complex subassemblies a r e faulty, then the Welding Powe r Sou r ce must be r etu r ned to an acc r edited
The r mal A r c Se r vice Agent fo r r epai r .
The basic level of t r oubleshooting is that which can be pe r fo r med without special equipment o r knowledge.
10.01 TIG Welding Problems
Weld quality is dependent on the selection of the co rr ect consumables, maintenance of equipment and p r ope r
welding technique.
Description Possible Cause Remedy
1 Excessive bead build-up
o r poo r penet r ation o r
poo r fusion at edges
of weld.
Welding cu rr ent is too low. Inc r ease weld cu rr ent and/o r
faulty joint p r epa r ation.
2 Weld bead too wide and
flat o r unde r cut at edges
of weld o r excessive
bu r n th r ough.
Welding cu rr ent is too high. Dec r ease weld cu rr ent.
3 Weld bead too small o r
insufficient penet r ation o r
r ipples in bead a r e widely
spaced apa r t.
T r avel speed too fast. Reduce t r avel speed.
4 Weld bead too wide o r
excessive bead build up
o
r excessive penet r ation
in butt joint.
T r avel speed too slow. Inc r ease t r avel speed.
5 Uneven leg length in
fillet joint.
W r ong placement of fille r r od. Re-position fille r r od.
Table 10-1: TIG Welding P r oblems