Weldmatic Fabricator | Operator Manual | Model No CP149-2
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10 TROUBLE SHOOTING CHART
Problem
Likely Reason
Outcome
All Transformer Models
No welding current, no
display.
The machine is not turned on
at both the mains supply and
the machine power switch.
If confirmed that the machine
is switched on correctly,
test the same outlet using a
known serviceable appliance.
Mains Circuit breaker
nuisance tripping during
welding.
Mains Circuit breaker
inadequately rated, or duty
cycle exceeded.
The circuit breaker may be
rated for Ieff (effective cur-
rent). If Weld output is greater
than the 100% rating the
machine will require mains
current higher than Ieff
The duty cycle should be
observed and understood.
Machine continually cuts
out on thermal overload
The machine duty cycle has
been exceeded.
Leave the machine
energized, with the fan
running until the machine has
cooled sufficiently.
The duty cycle should be
observed and understood.
No welding current, but
display on.
The connections may not be
made securely.
Ensure all connections are in
position and securely made.
Machine gives poor
quality weld.
The polarity of the electrode/
return cables is incorrect.
The return lead contacts, or
workbench surface requires
cleaning.
Polarity should be confirmed
for the process/wire type in
use.
The return lead contacts and
connections should be in-
spected and cleaned, and the
workbench cleared of waste
materials.
Machine works fine on
mains power but does not
work when connected to a
generator.
Generator cannot provide
high peak cycle currents for
inverter.
Use larger kVA generator or
sometimes a different band
generator will work.
Machine works fine on
mains power but does not
work when connected with
extension lead.
Extension leads creating
additional resistance, and
voltage drop
Use larger cable size, and
keep extension lead as short
as possible.
