WELDTECH WT200MP - ARC;MMA Welding Operation; MMA Setup and Current Selection; Lift TIG Welding Operation; TIG Torch, Gas, and Current Setup

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WT200MP Welding Machine
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nect the earth clamp to the work piece. Contact
with the work piece must be rm contact with
clean, bare metal, with no corrosion, paint or scale
at the contact point.
5.2 Connect the MIG power connectionlead (14) to
the positive welding power output socket (12).
Note if this connection is not made, there will be
no electrical connection to the welding torch!
5.3 ConnectthespoolgunEuroConnectortotheMIG
torchEuro connection socket (1) on the front of
themachine.Securebyrmlyhandtighteningthe
threadedcollarontheMIGTorchconnectorclock-
wise. Connect the spool gun interface plug to the
spoolgunconnectionsocket(2).Setthespoolgun
switch(3)to‘on’position.
5.4 Connect the gas regulator to a gascylinder (not
includedwithmachine)andconnectthegashose
from the regulator to the gas inlet on the rear of
themachine(15).Ensureallhoseconnectionsare
tight. Open gas cylinder valve and adjust regulator,
owshould be between10-25 l/min depending
onapplication.Re-checkregulatorowpressure
with torch triggered as static gas ow setting may
drop once gas is owing.
5.5 Settheweldingvoltageadjustmentknob(8),wire
speed control knob (9) and inductance control
knob (10) to the desired positions.You are now
ready to weld!
7. Lift TIG Operation
NOTE: Lift TIG operation requires an optional valve control
TIG torch, and argon gas cylinder.
7.1 Connect the earth cable quick connector to the
positive welding power output socket (12). Con-
nect the earth clamp to the work piece. Contact
with the work piece must be rm contact with
clean, bare metal, with no corrosion, paint or scale
at the contact point.
7.2 InsertTIGtorchpowerconnectionintothenega-
tive welding power output socket (13). Connect
valveTIGtorchgaslinetotheregulator,ensuring
all connections are tight.
7.3 Open gas cylinder valve and adjust regulator, ow
shouldbebetween5-10l/mindependingonap-
plication.  Re-check regulator ow pressure with
torch valve open as static gas ow setting may
drop once gas is owing.
7.4 Connectthemachinetosuitablemainspowerus-
ing the mains input power lead (16). Switch the
mains power switch (17) to‘on’to power up the
machine.Settheweldingmodeswitch(6)to‘Lift
TIG’.
7.5 Selecttherequiredoutputcurrentusingthecur-
rentcontrolknob(9).Youarenowreadytoweld!
NOTE: The WT200MP is a DC (Direct Current) output
welder only, this means that it is unable to TIG weld reactive
metals such as Aluminium alloys and Brass (which require
AC output). DC TIG output is suitable for steel, stainless steel
and copper. The New Model is the model in the range that
is designed for TIG welding Aluminium and its alloys.
Tips & Tricks
Duty Cycle Rating
Welding duty cycle is the percentage of actual weld-
ing time that can occur in a ten minute cycle. E.g.
20% at 160 amps - this means the welder can weld at
160 amps for 2 minutes and then the unit will need
to be rested for 8 minutes. All duty cycle ratings are
basedon an ambient air temperatureof 40°C with
50%humidity,whichistheinternationalstandardfor
such a rating. In an environment with temperature
s exceeding 40°C, the duty cycle will be less than
stated.Inambienttemperaturelessthan40°C,duty
cycle performance will be higher.
6. ARC/ MMA Welding Operation
6.1 Connect the earth cable quick connector to the
negativeweldingpoweroutputsocket(13) Con-
nect the earth clamp to the work piece. Contact
with the work piece must be rm contact with
clean, bare metal, with no corrosion, paint or scale
at the contact point.
6.2 Insert an electrode into the electrode holder and
connect the electrode holder and work lead to the
positiveweldingpoweroutputsocket(12).
NOTE: This polarity connection conguration is valid for
most GP (General Purpose) MMA electrodes. There are vari-
ances to this. If in doubt, check the electrode specications
or consult the electrode manufacturer.
6.3 Connect the machine to suitable mains power us-
ing the mains input power lead (16). Switch the
mains power switch (17) to‘on’to power up the
machine.Settheweldingmodeswitch(6)to‘ARC’.
6.4 Selecttherequiredoutputcurrentusingthecur-
rentcontrolknob(9).Youarenowreadytoweld!