Thermal Arc A-07360, Руководство по обслуживанию, Страница: 59 / 102

FABRICATOR 210
June 19, 2006 6-5
FAULT CAUSE REMEDY
1. Weld beads a r e too
small
a. Dec r ease t r avel speed
2. Weld penet r ation
na rr ow and deep
a. Reduce cu rr ent and voltage and inc r ease
Mig to r ch t r avel speed o r select a lowe r
penet r ation shielding gas.
A. Weld c r acking 3. Excessive weld
st r esses
a. Inc r ease weld metal st r ength o r r evise
design
4. Excessive voltage a. Dec r ease voltage by r educing the
voltage selection switch.
5. Cooling r ate too fast a. Slow the cooling r ate by p r eheating pa r t
to be welded o r cool slowly.
6. Weld speed too fast a. Reduce weld speed.
1. Faulty r ectifie r unit a. Have an Acc r edited THERMAL ARC
Se r vice Agent to test then r eplace the
faulty component.
2. Loose welding cable
connection.
a. Check all welding cable connections. B. Cold weld puddle
3. Low P r ima r y Voltage a. Contact supply autho r ity
4. Weld speed too fast a. Reduce weld speed.
1. The MIG to r ch has
been connected to
the w
r ong pola r ity on
the f r ont panel.
a. Connect the MIG to r ch to the positive
(+) welding te r minal fo r solid wi r es and
gas shielded flux co r ed wi r es. Refe r to
the elect r ode wi r e manufactu r e r fo r the
co rr ect pola r ity.
C. A r c does not have a
c r isp sound that
sho r t a r c exhibits
when the wi r efeed
speed and voltage
a
r e adjusted
co rr ectly.
2. Weld speed too fast a. Reduce weld speed.
Table 6-3b: Welding P r oblems and Solutions continued