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Northern Industrial Welder
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Instructions and Parts Manual
Flux Core 125
Wire Feed, Gasless Welder
MINOR AND ROUTINE
MAINTENANCE
Store in a clean, dry location away
from corrosive gas, excess dust and
high humidity. In temperatures from
10eF̢120°F and a relative humidity
less than 90%.
When transporting or storing the
welder after use, it is recommended
to repack the product as it was
received for protection. (Cleaning is
required before storage and you must
seal the plastic bag in the box for
storage
Trouble shooting Chart
Symptom (s) Possible Causes(s) Corrective Action(s)
Welder does not
work when the
main switch is
turned on
1.No power input
2. Power cord or power plug
is broken
3.Main switch is broken
4.Transformer is broken
1.Check circuit or fuse of
power source
2.Replace power cord
3.Replace switch
4.Replace transformer
Will not weld 1.Incorrect power input
2.Inadequate current at
output
3.Poor connection of output
cable
4. Dirty surfaces
5. Wrong welding wire
1.Check the power source
2.Check for proper
grounding to the work
piece.
3.Check output connection
4. Clean surfaces
5. Use correct wire
Blown fuse or
tripped circuit
breaker
Inadequate fuse or circuit
breaker
Check the fuse in power
source should be 20amp
Arc is hard to start 1. Wrong welding wire
2. Base metal not grounded
reliable
1.Use correct one
2.Make sure the
connection is good
Inconsistent arc or
wire feed
1. Not enough drive roller
pressure
2. Spool hub tension too tight
or loose
3. Contact tip worn or wrong
size
4. Rusty or corroded wire
1. Tighten the drive
tension adjustor on wire
feeder
2. Adjust the wing nut on
the spool holder
3. Replace contact tip
4. Replace wire.
Misc Northern 800#
Please provide the following:
- Model Number
- Serial Number (if any)
- Part description and number as shown on parts list