Weldmatic 200i + Weldmatic 250i
Model No CP137, CP138
13
Fitting the Gas Cylinder
Place the gas cylinder on the tray at the
rear of the optional welder trolley (if using).
Retain the cylinder with the chain provided.
Fit the gas regulator to the cylinder. DO NOT
apply grease or oil to these joints.
Fit the end of the gas inlet hose from the
back of the power source to the connector
supplied with the gas regulator, and secure
with the clamp also supplied.
Fitting the Gun and Cable Assembly
The supplied gun/cable assembly is equipped
with a ‘Euro’ wirefeeder connector which
incorporates all required connection points
for welding current, shielding gas and gun
switch control.
To attach the gun/cable assembly to
the wirefeeder mechanism, engage the
mating parts of the male and female Euro
connectors, then rotate the locking ring
clockwise to firmly secure the connection.
Fitting the Consumable Wire
200i
Slide the spool over the retaining tab, locate
the drive pin, and push spool up against the
flange so the retaining tab engages
the spool hub.
Check wire spool rotation tension.
Adjust spool holder wing nut to prevent over
run of the wire spool at the end of a weld,
without unduly loading the wirefeed motor.
250i
Remove large plastic nut. Fit the spool of
welding wire. Refit the retaining nut.
Check wire spool rotation tension.
Adjust spool holder hex head screw to prevent
over run of the wire spool at the end of a weld,
without unduly loading the wirefeed motor.
Feeding the Consumable Wire
At the wirefeed assembly, release the
compression screw by swivelling it outwards.
This allows the top roller arm to spring to the
open position. The end of the welding wire
can now be passed through the inlet guide,
over the bottom driven roller, and into the
output wire guide tube. Check that the drive
roll groove is correct for the wire in use. The
appropriate size is stamped on the visible
side of the installed roller. Check also that
the correct size contact tip is fitted at the gun
end. Feed roller and tip details are shown in
Section 11 of this manual.
Return the top roller arm to the closed position
and adjust the compression screw to provide
sufficient clamping of the drive roll to achieve
constant wirefeed. Do not over tighten.
With the equipment energised, operate the
gun switch to feed wire through the gun
cable. Holding the trigger for 5 seconds
without welding will allow wire to feed at
maximum speed.
Wire “Inch” - “Load”
When the trigger is pressed the wire will
slowly feed out, until the wire touches the
work piece, then the arc will start and wire
speed will change to selected speed.
If the wire does not touch work piece with in
5 seconds, then the wire speed will increase
to maximum to assist wire loading. The wire
speed cannot be adjusted during this time.
Compression screw
Top roller arm
Groove
size
