Operators Manual
14
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13.8.1.1 Low % Balance
› Less time negative
› More time positive
› More cleaning action
› More heat in the tungsten
› Wider weld with shallower
penetration
13.8.1.2 High % Balance
› More time negative
› Less time positive
› Less cleaning action
› Less heat in the tungsten,
higher current for smaller
electrode
› Narrow weld beads with
deeper penetration
› Smaller heat affected zone
13.8.2 Arc Force
When machine is in Stick MMA
mode, selecting the ARC FORCE
allows adjustment of the % increase
in current that will occur when the
arc starts to short circuit, or snap out.
Adjusting this value can be useful
when using cellulose electrodes.
14 Power On/Off Switch
In the OFF position, this switch isolates the
power source from mains power supply.
The switch is located on the rear panel.
6 Installation
Connection to Electrical Mains Power
Supply
The Weldarc 200i AC/DC is fitted with a
15 Amp plug and socket, recognisable by
a wide Earth pin. Power Supply authorities
require that equipment fitted with a 15 Amp
plug shall ONLY be connected to a 240 Volt,
15 Amp power point. DO NOT modify
the plug.
The minimum capacity of the main power
supply wiring and power outlet supplying a
welder is selected according to the Effective
Primary Current of the equipment. Refer to
Section 4.
The minimum recommended main power
supply circuit breaker rating for Weldarc
inverter are listed in Section 4.
The current rating of the mains cable
depends on cable size and method of
installation. Refer to AS/NZS 3008.1, Table 9.
If it becomes necessary to replace the mains
flexible supply cable, use only cable with
correct current rating. See Section 4.
If it is necessary to use an extension power
supply cable, ensure that it is rated as per
Section 4. Voltage drop which will occur over
long lengths of cable will reduce the quality
of welds and the maximum welding current
available from the equipment.
As noted previously, it is not recommended
that the Weldarc inverter be powered from
small engine-driven generator sets unless
they have adequate voltage regulation. Poor
regulation results in peaks of supply voltage
which can occur with some equipment
of this type. Excessive voltage peaks can
damage the circuits of the welder.
5 Controls
