WIA WELDMATIC 270C, Руководство оператора

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8
Operators Manual
Quality
•
Reliability
•
Performance
4 Wire Speed Control
This control sets the speed of the wire drive
motor within the range of 0 - 172 RPM,
equivalent to 0 - 20 metres per minute of
welding electrode wire. Rotate the control
clockwise to increase the feed speed.
This control is used in conjunction with the
Wire Speed Range Select Switch. Switch to
low for slower (0-10 metres/min wirespeed
control and switch to high for higher
(8-20 metres/min) wire speeds.
5 Wire Speed Range Indicator Light
This indicator is illuminated when speed
range is set to High speed range (8-20
metres/min).
6 Wire Speed Range Select Switch
Press to change from Low wire speed range
to High wire speed range.
7 Creep Select Button and Indicator
‘Creep’ is selected when welding more
difficult materials such as aluminium or
stainless steel. In ‘Creep’ mode, the wire is
fed slowly until contact is detected and then
accelerated to the selected speed. Because
the wire comes into contact with the work
slowly the arc establishes smoothly.
This is followed by rapid acceleration so that
the arc does not flare up and damage the
tip.
Even if an arc is not established, within one
second of the gun switch being operated
the wire feed accelerates to selected
welding speed.
8 Latch Select Button and Indicator
Press to select and deselect ‘Latch’ mode.
When ‘Latch’ mode is selected, the operator
need close the gun switch momentarily
only to commence welding, and again
momentarily to end welding. This can help
to reduce operator fatigue during long
welding runs.
9 Purge Button
Press to open the gas solenoid valve without
energising the welding power source.
10 Inch Button
Press to feed wire without energising the
welding power source. The wire will feed at
the current wirespeed setting.
11 Coarse Voltage Control
This switch provides Coarse adjustment of
the output welding voltage over four ranges.
12 Standby/Operate Switch
13 Fine Voltage Control
This switch provides Fine adjustment of the
output welding voltage over four steps.
14 Positive Welding Output Terminal
15 Negative Welding Output
Terminal
16 Polarity Changeover Lead
17 Gun/Cable Connector
18 Circuit Breaker
(on inside panel next to wirefeeder
controls)
This circuit breaker protects the 30 Vac
wirefeeder supply circuit.