Crown CT33123 Original Instructions Manual page 17

• mode to adjust the gas purge time after welding
(POST FLOW) - when welding is finished, gas purge
allows the end of the welding seam to cool down
gradually, prevents cracking and the formation of
oxides� When this mode is selected, indicators 21
and 12 are lit� To change the time, turn regulator 17
(the set value will be shown on display 14)�
Button A (welding current adjustment)
Button 19 (A) allows to switch between the time
adjustment (F2 button, see above) and the welding
current adjustment for both TIG and MMA welding
modes� In the mode to adjust the welding current,
indicators 10 and 18 are lit; to change the welding
current, turn regulator 17 (the set value will be shown
on display 14)� The magnitude of the welding current
depends on the works performed, thickness of
workpieces to be welded, an electrode diameter, etc�
[CT33129]
Button "MMA welding"
Press button 50 to select one out of two welding meth-
ods:
• TIG welding (welding with a non-consumable
electrode in an inert shielding gas medium with a
high-frequency method of arc ignition) - when this
mode is selected, indicator 38 is not lit, welding
current can be adjusted (see below);
• MMA welding (manual arc welding using
consumable electrodes with coating) - when this
mode is selected, indicator 38 is lit, welding current
can be adjusted (see below)�
Welding current adjustment
To change the welding current, turn regulator 17 (the
set value will be shown on display 14)� The welding
current magnitude depends on the works performed,
thickness of workpieces to be welded, an electrode
diameter, etc�
[CT33130]
F1 button (welding method selection)
Press button 39 (F1) to select a welding method:
• LIFT TIG (non-consumable electrode welding
in an inert shielding gas medium with a contact
method of arc ignition) - when this mode is selected,
indicator 35 is lit;
• HF TIG (non-consumable electrode welding in an
inert shielding gas medium with a high-frequency
method of arc ignition) - when this mode is selected,
indicators 35 and 36 are lit;
• PULSE TIG (non-consumable electrode welding
in an inert shielding gas medium in a pulse mode;
in this mode the workpiece heating and distortion
during welding are reduced; it is suitable for welding
thin workpieces or decorative welding) - when this
mode is selected, indicators 35 and 37 are lit;
• MMA welding (manual arc welding using
consumable electrodes with coating) - when this
mode is selected, indicator 38 is lit�
F2 button (setting pulse mode parameters)
Only for welding in the PULSE TIG mode� Press
button 34 (F2) to set pulse mode parameters:
• frequency control mode (FREQ) - when this mode
is selected, indicators 31 and 13 are lit� To change
this parameter, turn regulator 17 (the set value will
be shown on display 14, when the frequency is set
to more than 999 Hz, display 14 will show values in
kHz, and indicator 13 will blink);
• mode to adjust the upper level of the welding
current (PEAK) - when this mode is selected, indi-
cators 32 and 11 are lit� To change this parameter,
turn regulator 17 (the set value will be shown on dis-
play 14);
• mode to adjust the low level of the welding cur-
rent (BASE) - when selecting this mode, indica-
tors 33 and 11 are lit� To change this parameter,
turn regulator 17 (the set value will be shown on
display 14)�
Button F3 (setting operating parameters for pulse
welding)
Only for welding in the PULSE TIG mode and four-
stroke torch operation mode (4T). Press button 30
(F3) to adjust operating parameters for pulse welding:
• starting current adjustment mode (INITIAL CUR) -
when this mode is selected, indicators 26 and 10 are
lit� To change this parameter, turn regulator 17 (the
set value will be displayed on display 14);
• mode to adjust the time for increasing the cur-
rent from the starting current to the operating one
(UP SLOPE) - when selecting this mode, indica-
tors 27 and 12 are lit� To change this parameter,
turn regulator 17 (the set value will be shown on
display 14);
• mode to adjust the welding current reduction time
(DOWN SLOPE) - when this mode is selected, indi-
cators 28 and 12 are lit� To change this parameter,
turn regulator 17 (the set value will be shown on dis-
play 14);
• mode to adjust the crater filling current (CRATER
CUR) - when this mode is selected, indicators 29
and 10 are lit� To change this parameter, turn regula-
tor 17 (the set value will be shown on display 14)�
F4 button (torch mode selection)
TIG welding only� Press button 25 (F4) to select one
out of two operating modes of torch 42:
• 2T mode (two-stroke, when this mode is selected,
indicator 23 is lit) - press and hold torch 42 button to
turn it on� During operation, keep holding torch 42
button in a pressed position� To turn off, release
torch button 42;
• 4T mode (four-stroke, when this mode is selected,
indicator 24 is lit) - press and release torch 42 button
to turn it on� During operation, do not hold torch 42
button in a pressed position� To turn off, press and
release torch 42 button�
F5 button (purge time adjustment)
TIG welding only� Press button 22 (F2) to select the
gas purge time before or after welding:
• mode to adjust the gas purging time before
welding (PRE FLOW) - gas purging before welding
allows the air to be displaced from a welding area to
prevent the formation of oxides� When this mode is
selected, indicators 20 and 12 are lit� To change this
parameter, turn regulator 17 (the set value will be
shown on display 14);
English
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