Tweco 300 S Arcmaster - Manual (Page 26)

ARCMASTER ® 300 S
March 31, 2006 4-2
3. Positive Terminal
Welding current fl ows from the Power Source via heavy
duty Dinse type terminal. It is essential, however, that
the male plug is inserted and turned securely to achieve
a sound electrical connection.
4. Negative Terminal
Welding current fl ows from the Power Source via heavy
duty Dinse type terminal. It is essential, however, that
the male plug is inserted and turned securely to achieve
a sound electrical connection.
CAUTION
Loose welding terminal connections can cause
overheating and result in the male plug being
fused in the bayonet terminal.
5. ON/OFF Switch
This switch connects the Primary supply voltage to the
inverter when in the ON position. This enables the Power
Supply.
!
WARNING
When the welder is connected to the Primary
supply voltage, the internal electrical components
maybe at primary potential with respect to
earth.
6. Input Cable
The input cable connects the Primary supply voltage to
the equipment.
7. SMART Logic Switch
Manual slide switch mounted on the back panel selects
for proper input voltage. If this slide is not set to the
position that matches the input voltage from the electrical
source the Smart Logic circuit will inhibit welding power
source output. The digital meter will show primary input
error code.
NOTE
Due to variations that can occur in manufactured
products, claimed performance, voltages, ratings,
all capacities, measurements, dimensions and
weights quoted are approximate only. Achievable
capacities and ratings in use and operation will
depend upon correct installation, use, applications,
maintenance and service.
4.02 Weld Parameter Description
Figure 5 - ARCMASTER 300 S Front Panel with Parameter Description