Helvi UNITECH 328, Инструкция по эксплуатации

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EN-17
WELDING HINTS AND MAINTENANCE
• Always weld clean, dry and well prepared
material.
• Hold gun at a 45° angle to the workpiece with
nozzle about 5 mm from the surface.
• Move the gun smoothly and steadily as you
weld.
• Avoid welding in very drafty areas. A weak
pitted and porous weld will result due to air
blowing away the protective welding gas.
• Keep wire and wire liner clean. Do not use ru-
sty wire.
• Sharp bends or kinks on the welding cable
should be avoided.
• Always try to avoid getting particles of me-
tal inside the machine since they could cause
short circuits.
• If available, use compressed air to periodically
clean the hose liner when changing wire spools
IMPORTANT: Disconnect from power
source when carrying out this operation.
• Using low pressure air (3/5 Bar=20-30 PSI),
occasionally blow the dust from the inside of
the welder. This keeps the machine running
cooler. Note: do not blow air over the printed
circuit board and electronic components.
• The wire feed roller will eventually wear du-
ring normal use. With the correct tension the
pressure roller must feed the wire without slip-
ping. If the pressure roller and the wire feed
roller make contact (when the wire is in place
between them), the wire feed roller must be
replaced.
• Check all cables periodically. They must be in
good condition and not cracked.
ERRORS LIST AND TROUBLESHOOTING
D1 and D3 display the wording “Err”, D2 and D4 display the type of error.
ERRORS LITS
Error Cause / Remedy
“OIE”: while powering on the unit, it indicates
normal control on the current reading circuit. At rest
it indicates a signal too far from zero.
Power off and on again the generator, if error
remains or appears back contact the Service Centre.
“TA “: during machine working, it signals that the
current transformer is NOT detected.
Contact the Service Centre
“IOV”: current supplied beyond the maximum limit
safely supported by the hardware.
a) in MIG mode, parameter is set too high: lower
the welding parameter
b) Problems with the control electronics: contact the
Service Centre
“OT1”: Over Temperature, sensor 1 detected Let the generator ON until error disappears
“OT2”: Over Temperature, sensor 2 detected Let the generator ON until error disappears
“OT3”: Over Temperature, both sensors 1 and 2
detected at the same time
Let the generator ON until error disappears
“H2O”: cooling circuit is active, but no pressure is
detected
Check for the proper working of the water cooling unit.
Check the coolant level and correct liquid circulation.
“MOT”: short-circuited motor or with excessive load. a) Check if the torch and the wire liner are not
clogged or worn
b) Check if the friction of the wire spool is correctly
adjusted
c) check if the wire unwinds correctly (overlapped
wire)
“DAT”: in the Unitech with separate wire feeder, it
indicates no communication with the external pe-
ripheral (wire feeder).
a) check correct connection of the hosepack con-
nectors
b) check the condition of the hosepack
c) power off and on again the generator. If the
problem persists, contact the Service Centre
“OUT”: when powering on the generator, it indicates
no output voltage between the + and - of the
generator
a) short-circuited output. Check that there are no
short circuits between positive and negative (e.g.
torch left on the piece to be welded)
b) disconnect all power cables from the generator
output; if the error persists, contact the Service
Centre