other electronic equipment.
These problems may be the result of radiated interference. Proper grounding methods can reduce or
eliminate this.
Radiated interference can develop in the following ways
1.Direct interference from welder power source
2.Direct interference from the welding leads
3.Direct interference radiated from feedback into power lines
4. Interference from re-radiation by ungrounded metallic objects
Keeping these contributing factors in mind, installing equipment as per following instructions should
minimize problems
1.Keep the welder input power lines as short as possible and enclose as much of them as possible in metal
conduit or equivalent shielding. There should be a good electrical contact between this conduit and ground
(Earth).
2.Keep the work and electrode leads as short as possible. Tape the leads together where practical.
3.Be sure the torch and earth leads rubber coverings are free from cuts and cracks that allow welding power
leakage.
4.Keep earth lead connection to work in good condition clean area on workbench where earth clamp is
situated on a regular basis.
VENTILATION
This machine can create powerful welding current and has strict cooling requirements that cannot be met
with natural ventilation. Therefore machine to work stable with effective cooling. The minimum distance
between the machine and nearby objects should be 20mm.
2.2 INPUT POWER CONNECTION
The machine has one input connection, the power input cable. The power input cable is located on the rear.
All N2A1 Series machines provided with a 220-240V~ cables, 2.0M in length, with a 16A plug molded onto
the cord.The rated output current is available when connected to a 20A branch circuit .when connected to a
branch circuit with lower capacity, lower welding current and duty cycle must be used.
All N2A2 Series machines provided with a STW 16AWG 600V 105 ℃ cables, 2.0M in length, with a
15Amp 5-15P plug molded onto the cord,but the machine only for 110-120V~ power is allowed to be
connected.
The rated output current is available when connected to a 20A branch circuit .when connected to a branch
circuit with lower capacity, lower welding current and duty cycle must be used. The primary cable should be
tightly connected to the correct socket to avoid oxidization.
Check whether the voltage value varies in acceptable range with a multi-meter.
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