Crown CT33123 Original Instructions Manual page 16

• put the screw nut 57 on the connector thread 7
(see fig. 3.3), and tighten it manually;
• only for model CT33130 - connect power con-
nector 59 to socket "-" 8 (see fig. 4.3).
• Disconnect all cables in reverse sequence�
During MMA welding (see fig. 5)
• If welding torch 42 is installed, disconnect it�
• If necessary to attach the connector to the welding
cable, follow the steps shown in figure 5.1.
• Insert plugs of the welding cables to the machine
as shown on figure 5.2. When connecting, please
observe the recommended polarity�
• Disconnect plugs of the welding cables in a reverse
order (see fig. 5.3)�
Welding torch assembly / disassembly / setting
process (see fig. 6)
• A ceramic torch nozzle 43 is chosen on the basis of
actual operation recommendations�
• When installing a tungsten electrode 61, please
ensure that it's properly sharpened (see fig. 6.4-6.6
and recommendations below)�
• Collet 44 inside diameter should be relevant to a
diameter of tungsten electrode 61�
• In order to perform works in tight areas, you may
install a short end cap 47, as illustrated on fig. 6.2 (in
this case, please use the tungsten electrode 61 of a
proper length)�
• Screw the collet holder 45 and ceramic torch noz-
zle 43 into the welding torch body 60 (see fig. 6.1-6.2).
• Put the collet 44 on the tungsten electrode 61 and
insert it into the collet holder 45�
• Adjust the distance for which tungsten electrode 61
protrudes from the ceramic nozzle 43� Normally, out-
let of the tungsten electrode 61 from a ceramic torch
nozzle 43 is 2-3 mm (see fig. 6.3); however it can run
to 8 mm during angular welding�
• Screw the end cap 46 or 47 into the welding torch
body 60 (see fig. 6.1-6.2).
• Dismantle in reverse order�
Initial operating of the machine
Before starting the operation the following steps are
necessary:
• always use the correct supply voltage: the power
supply voltage must match the information quoted
on the machine body;
• inspect the condition of all cables and replace the
cable where damage is found;
• inspect the condition of hose 54, replace it if dam-
age is found;
• please ensure that there is no gas leakage when
turning on the gas;
• inspect the condition of welding torch 42 (dur-
ing TIG welding), electrode holder 40 (during MMA
welding), and earth clamp 41, replace it if damage
is found;
• inspect the tungsten electrode sharpening ac-
curacy (during TIG welding) and a distance it over-
hangs a welding torch ceramic nozzle�
• Before starting the machine, make sure that elec-
trode and earth clamp 41 don't touch each other�
• After the machine is switched on, make sure that the
built-in cooling fan is working - the air will be blowing
from vent holes 1 (on the back of the machine)�
Switching the machine on / off
Switching on:
Move switch 2 into the "On" position (indicator 15 will
then light up and the built-in cooling fan will start rotat-
ing)�
Switching off:
Move switch 2 into the "Off" position�
Design features of the machine
Buttons and indicators of the front panel
Temperature protection
Temperature protection prevents machine damage,
switching it off in case of overheating� When tempera-
ture protection goes on, indicator 16 lights up� Do not
switch the machine off, let it cool down and do not con-
tinue operation until then�
Power indicator
Power indicator 15 is on when the machine is
connected to the mains and is ready to be switched on�
Easy start
Only for welding in the MMA mode. The easy start
function (increased voltage of idle running) facilitates
the lighting up of the welding arc�
[CT33123]
F1 button (welding method selection)
Press button 39 (F1) to select one out of two welding
methods:
• 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 48 is lit and the welding
current can be adjusted (see below);
• MMA
welding
consumable electrodes with coating) - when this
mode is selected, indicator 38 is lit and the welding
current can be adjusted (see below)�
F2 button (adjustment of the welding current
decrease time / adjustment of the gas purge time
after welding)
TIG welding only� Press button 49 (F2) to select the
mode to adjust the welding current reduction time or
gas purge time after welding:
• mode to adjust the welding current decrease
time (DOWN SLOPE) - gradual reduction of the
welding current ensures high-quality crater welding
at the end of the welding seam)� When this mode is
selected, indicators 28 and 12 are lit� To change the
time, turn regulator 17 (the set value will be shown
on display 14);
English
16
(manual arc welding with