Rohr HP-200PP - Troubleshooting

HP-160L
/ HP-200PP/
HP-250PP
ROHR
Troubleshooting
Fittings,
welding
materials
and environmental
factors-may
affect-the
quality
of
your welding.
This
guide
will
help
you
to ensure
your
setup
is just right'to
achieve
the-perfect
weld.
Oxidisation
occurring during
weld
e
Check
that-yourArgoncylinder
is
open and,pressurised
to a
minimum
of.0.5Mpa.
e
Check
that the
flow meter is
open
and it has
enough
flow. You.can select
the flow
according
to the
welding.
current. Insufficient
flow
may.cause
oxidisation,
a minimum ofS
litres
per
minute is recommended.
©
Check the torch to
ensure that it’s not-blocked.
e
Check
that the
gas supplyis fully
air
tight.
Hard to-strike / maintain an
are
e
Ensure
you.aré-using
a
high qualitytungsten-electrode.
e
Grind
the end
of.the-tungsten
electrode
to-a
taper.
If the
tungsten
electrode is not
ground,
it
will be difficult to strike arc’or the
arc
may
beunstable.
When
MMA
welding,
there
is too much weld
e
Ensure that:the:current
used is
not too
high
for the thickness of the
welding
rod:
There is no
power
to the
unit / no
response
from the unit
e
«Ensurethat the electric
cable is\in
good
condition
and connected
correctly..Faulty
cables
must
not be
used,
they
should be
replaced
by
a
qualified professional.
The HF
arc-striking
sound can be heard but
there is no
welding
output
©.
Check the torch
and
ground
cables to.ensure that
they
are connected
correctly
and
they
are not
damaged.
Faulty
cables must not be
used,
they
should bé
replaced by.a qualified
professional.
©
Checkthat the
grounding
cable is
making
good
contact with the
welding object:
©
.
Check
the end of the
tungsten.electrode
to seeif
it
needs to
be
ground
downto a
taper.
Electrodes that have
become contaminated need to be
ground
down.
8
©
Rohr