SATA AE7022, Instruction Manual

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Gas nozzle . Periodically clean the nozzle of all weld spatter that may have accumulated during welding
operations If the nozzle should become distorted or oval in shape then it must be replaced.
Contact tip . A good contact between the contact tip and the wire ensures a stable arc and optimal current
output. Therefore, following steps must be followed:
A) The contact tip hole must be kept free of dirt or oxidation.
B) After lengthy welds, spatter can easily accumulate on the contact tip and prevent the wire from being fed.
The contact tip must be cleaned regularly and if necessary it must be replaced.
C) The contact tip must always be screwed tightly on to the body of the torch. The thermal cycles which the
torch undergoes during operation may loosen the contact tip which, in turn, may cause the torch body and
nozzle to overheat or cause unsteady wire feed.
The Wire Liner is an important part that must often be checked since, during normal operations, the wire
can deposit copper dust or tiny metal shavings in the lining. Periodically clean the liner and the gas line with
a jet of dry, compressed air. Wire liners are exposed to continual wear and therefore they must be replaced
after a certain period of time.
Wire feed motor. Periodically clean the wire feed assembly and the drive rolls from any rust or metal
shavings due to the feeding of the wire. A periodic check of all the components of the wire feed assembly,
spool holder, drive rolls, wire liner and the contact tip is recommended.
TROUBLE PROBABLE CAUSE REMEDY
Limited electric
output
A phase missing
Check the phase of the feed line and/or the
remove control switch contacts
A line fuse is burnt Replace it
Wrong connection on the voltage
changer terminal board Check the terminal board connections by
following the plate scheme
The rectifier diode are burnt Replace the rectifier
Loosened torch or ground connections Tighten all connections
Welding regulation commutator has an
uncertain contact
Replace the commutator
Transformer wire interrupted on the
commutator Unscrew the commutator contact remove the
wire insulation and put it under the contact
Welding with a
lot of metal
spatter
Wrong adjustment of the welding
parameters
Select the correct parameters through the
welding voltage switch and the wire-speed
adjustment potentiometer
Wire advancing unproperly Uncorrected sheath diam.
Insufficient grounding Check grounding connections
Wire not
advancing or
Wire roller with too wide groove Replace roller
advancing
unproperly
Obstructed or clogged liner Extract it and clean
Loose wire pressing roller. Tighten it
Coil reel friction too tight Loosen and adjust it
Current nozzle clogged Replace it