Quickguide Navigator 2500/3000 DC + AC/DC Quickguide

Quickguide
Quickguide Navigator
Navigator
2500/3000
2500/3000 DC
DC +
+ AC/DC
AC/DC
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1
Welding current
Press the key to allow setting of the welding
current with the control knob.
6
Mains error
The red LED is alight, if mains voltage is too high
or too low.
2
Storage of programs
Press the key and hold it down while turning the
control knob. P, 1, 2, 3 etc. is displayed. When the
key is released, the selected program is activated.
Used for recurrent welding jobs and welder's own
program settings.
7
Welding process
Key for setting of MMA or TIG welding.
8
Selection of trigger mode
Key for setting of 2-stroke/4-stroke or spot time in
TIG.
3
Welding voltage
The LED is alight when there is voltage on MMA
electrode or TIG torch.
9
Current setting
Key for setting of current: Int./ext./Dialog torch.
4
Parameter units
LED for active parameter (setting of parameter by
means of control knob)
10
Ignition method
Key for setting of HF or LIFTIG ignition in TIG.
11
Pilot/search arc
LED under 1st symbol alight = active pilot arc.
LED under 2nd symbol alight = normal ignition
function.
5
Overheating
The LED is alight or flashes yellow if welding
has been interrupted due to overheating of the
machine. The machine will automatically
resume welding after cooling.
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12
Gas pre flow
Gas pre flow time can be set between 0 and 10
secs.
23
Base current
Setting in % of pulse current (between 1 and 99%
(min 5A)).
13
Start amp
Start amp level can be set in % of the set
welding current (0-100% (min 5A)).
24
Arc-power
In MMA the current is briefly increased during
short-circuits (can be set between 0 and 150 % of
the set welding current).
14
Slope up (time)
Slope-up time from start amp value to set welding
current value (time can be set between 0 and 10
secs).
25
Hotstart
In MMA the start amp is briefly increased in %
of the set welding current (between 0 and
100%).
15
Slope down (time)
Slope-down time from welding current value to
set stop amp value (time can be set between 0
and 10 secs).
26
16
Spot time
In TIG the spot time is the welding period between
slope up and slope down (can be set between 0.1
and 50 secs.).
Stop amp
Stop amp value is set in % of the set welding
current (between 0 and 100% (min 5A)).
27
Current type
Key for setting of AC welding or DC welding.
17
Gas post flow
Gas post flow time can be set between 0 and 30
secs.
28
18
AC frequency
In TIG the frequency of the AC current can be set
between 1 and 300 Hz and in MMA between 1 and
100 Hz (Hz max depends on A).
Idle current
Press briefly to activate an idling-current level in
4-stroke. Can be set in % of welding current value.
29
19
Pulse
Selection of pulse welding.
Electrode pre-heating (TIG AC ignition help)
The electrode is pre-heated automatically. (Value
0 is default, but the power can be reduced to a
value of ÷9 or increased to a value of +9).
20
No pulse
DC welding without pulse.
30
21
Pulse time
The period during which the pulse current is
active (pulse current = set welding current
between 0.01 and 10 secs).
AC-t-balance, based on time (AC TIG)
In AC TIG the time balance is adjusted between
the positive and the negative half-wave. The AC-t
balance adjusts the negative half-wave time in %
of the positive half-wave (between 1 and 100%).
31
AC-I-balance, based on amperage (TIG)
In AC TIG the cleaning current of the positive
half-wave is adjusted in % of the set negative
welding current (between 1 and 200%).
22
Pause time
The period during which the base current is
active (pause time can be set between 0.01 and
10 secs.)
Rules-of-thumb in TIG welding:
Generally:
• In DC the welding current is set at approx. 30 A per mm wall thickness and in AC approx. 30% higher (butt welds)
• A long slope-down time reduces the risk of crater cracks and hardening cracks.
• Gas post flow should be set so as to ensure a shiny Tungsten electrode: min. 3 secs. + approx. 1 sec./50 A.
Pulse welding (normally used in position welding or welding in thin wall thicknesses):
• Normal setting of pulse time: between 0.1 and 0.5 sec. and 30-50% of the total pulse cycle time.
• Normal setting of pulse current: 40-60% higher than base current.
AC welding:
• Normal setting of time balance: positive time makes up 30-40% of the total period time. A lower positive time reduces the cleaning power; a higher
positive time increases the cleaning power.
• Normal setting of frequency: between 80 and 100 Hz in order to narrow and stabilise the arc.
• Electrode pre-heating is default 0, but can be set toward ÷9 if a ball is formed at the electrode point, or toward +9 in case of large electrode
diameters and low amperage, or if gases are used that are difficult to ionize, such as He/H.
• Current balance is default 100% (identical on + and -). A positive current below 100% reduces the load on the Tungsten electrode and gives a more
pointed Tungsten electrode. Suitable for welding in thin wall thicknesses.
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