Daihen varstroj VARMIG 231-i LCD, Руководство пользователя, Страница: 60 / 100

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11. DAILY CHECKING
To make best use of the machine, daily checking is very important. During the daily checking, please check in
the order of torch, wire-feeding vehicle, all kinds of PCB, the gas hole, and so on. Remove the dust or replace
some parts if necessary. To maintain the purity of the machine, please use original welding parts.
Cautions
：
Only the qualified technicians are authorized to undertake the repair and check task
of this welding equipment in case of machine fault.
1. Power supply
Part Check Remarks
Control panel
1.Operation, replacement and installation of Switch.
2.Switch on the power, and check if the power indicator is on.
Fan 1.Check if the fan is functioning and the sound generated is
normal.
If the fan doesn’t work or the sound is
abnormal, do inner check.
Power supply 1. Switch on the power supply, and check if abnormal vibration,
heating of the case of this equipment, variation of colors of
case or buzz presents.
Other parts
1.Check if gas connection is available, case and other joints are
in good connection.
2. Welding torch
Part Check Remarks
Nozzle
1.Check if the nozzle is fixed firmly and distortion of
the tip exists.
Possible gas leakage occurs due to the unfixed nozzle.
2.Check if there is spatter sticking on the nozzle. Spatter possibly leads to the damage of torch. Use
anti-spatter to eliminate the spatter.
Contact tip
1.Check if the contact tip is fixed firmly. Unfixed contract tip possibly leads to unstable arc.
2.Check if the contact tip is physically complete. The physically incomplete contact tip possibly leads to
unstable arc and arc automatically terminating.
Wire feeding
hose
1.Make sure that there is the agreement of wire and
wire feed tube.
Disagreement of the diameters of wire and wire feed
tube possibly leads to the unstable arc. Replace
it/them if necessary.
2.Make sure that there is no bending or elongation
of wire feed tube.
Bending and elongation of wire feed tube possibly
leads to the unstable wire feed and arc. Replace it if
necessary.
3.Make sure that there is no dust or spatter
accumulated inside the wire feed tube, which
makes the wire feed tub blocked.
If there is dust or spatter, remove it.
4.Check if the wire feed tube and O-shaped seal
ring are physically complete.
The Physically incomplete wire feed tube or O-shaped
seal ring possibly leads to the excessive spatter.
Replace the wire feed tube or O-shaped seal ring if
necessary.