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Inverter welding machine 120 A
Starting-up
First select the welding mode using the rotary control, which must be pressed. You can switch between di erent functions and wire diame-
ters by pressing the rotary knob. For ux-cored welding wire operation, select the 0.8 mm or 0.9 mm function according to the cored wire
inserted. If you want to use the device for welding with stick electrodes, select MMA mode.
Flux-cored welding wire
• Make sure that the ON/OFF switch (18) is set to the "O" ("OFF") position and that the mains plug (17) is not plugged into the socket.
• Connect the supply cable from the hand torch or hose package (11) to the corresponding output (9) on the device (marked with "-")
• Then connect the earth terminal (13) to the corresponding output (10) on the device (marked with "+").
IMPORTANT: The ground cable must be connected to the positive (+) terminal on the front of the device!
• Wear appropriate protective clothing according to the speci cations and prepare your workplace.
• Connect the earth terminal (13) to the workpiece.
• Install the ller wire and follow the instructions in "Before commissioning".
• To operate the welding machine, insert the mains plug (17) into the mains socket and switch it on by turning the ON/OFF switch (18) to the
"I" ("ON") position.
• The LED input voltage display (2) on the front panel of the machine will light up and signal that the machine is ready for operation.
• Adjust the welding current using the rotary knob (5). You can read the set Amp number on the LCD displays.
Electrode welding (MMA)
• Make sure that the ON/OFF switch (18) is set to the "O" ("OFF") position and that the mains plug (17) is not plugged into the socket.
• Connect the welding cables according to their polarity and to the speci cations of the electrode manufacturer.
• To do this, connect the connection of the ground terminal (13) to the corresponding output (9) on the device (marked with "-").
• Connect the connection of the electrode holder (14) to the corresponding output (10) on the device (marked with "+").
• Wear appropriate protective clothing according to the speci cations and prepare your workplace.
• Connect the earth terminal (13) to the workpiece.
• Clamp the electrode into the electrode holder (14).
• To operate the welding machine, insert the mains plug (17) into the mains socket and switch it on by turning the ON/OFF switch (18) to the
"I" ("ON") position.
• The LED input voltage display (2) on the front panel of the machine will light up and signal that the machine is ready for operation.
• Adjust the welding current using the rotary knob (5) depending on the electrode used. You can read the set Amp number on the LCD
displays.
! NOTE: Refer to the following table for the recommended welding current to be set depending on the electrode diameter.
MMA
Ø Electrode
Welding current
1.5 mm
30 – 50 A
2.0 mm
50 – 60 A
2.5 mm
55 – 85 A
3.2 mm
90 – 140 A
For optimum welding results, it is important to set the current correctly. Too high a current leads to rapid burning of the electrode and a large
weld pool that is di cult to control, whilst too low a current will result in a small, irregular weld pool.
CAUTION:
The ground terminal (13) and the electrode holder (14) must not be brought into direct contact.
CAUTION:
The device features overheating protection. When triggered, the yellow light (3) will come on and welding will tem-
porarily be impossible. The device will continue to operate whilst the fan is cooling down. As soon as the device is ready for operation again,
the yellow indicator lamp (3) will automatically go out and welding can be continued.
CAUTION:
Take care not to rub the electrode against the workpiece. This can
damage the workpiece and make it more di cult to ignite the arc. After igniting the arc, maintain the correct distance to the workpiece. The
distance should correspond to the diameter of the electrode used. During welding, keep this distance as accurate and constant as possible.
The angle between the electrode and the working direction should be between 20° and 30°.
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Inverter welding machine 120 A
CAUTION:
The welding clamp and welding electrode should be placed on the insulated bracket after the welding operation. Re-
moval of the molten slag is only possible after the electrode has completely cooled down. To re-weld the interrupted weld seam, the molten
slag must rst be removed at the welding position.
CAUTION:
• Arc radiation can cause eye in ammation and skin burns.
• Splashing and molten slag can cause eye injury and burns.
• Wear tinted eye protection goggles or a protective mask.
• The eye protection goggles and protective mask must comply with safety standards.
Switching o
After the welding process, place the electrode holder and welding electrode on the insulated surface. Then switch o the power and dis-
connect the power plug (17) to ensure safety.
Storage and transport
Before storing or transporting the welding machine and accessories, make sure these have cooled down completely. Make sure that the
machine is stable and secured during transport to prevent damage.
Maintaining and cleaning
! NOTE: The welding machine must be serviced and overhauled regularly to ensure
proper functioning and compliance with safety requirements. Only rely on quali ed electricians for repairs and maintenance work. Improper
and incorrect
operation can lead to failures and damage to the machine.
• Before cleaning the welding machine, disconnect the mains cable (17) from the mains socket so that the device is safely disconnected from
the electrical circuit.
• Clean the machine and its accessories regularly from the outside. Remove dirt and dust using air, cotton wool or a brush.
! NOTE: The following maintenance work may only be performed by quali ed personnel.
• The regulator, earthing device and internal cables should be serviced regularly.
• Check the welding machine's insulation resistance at regular intervals. To do this, use the appropriate measuring device.
• In the event of a defect or if machine parts are to be replaced, please contact the appropriate personnel.
Disposal & Environmental Information
The packaging is made from environmentally friendly materials that you can dispose of at local recycling stations.
Do not dispose of power tools in domestic waste!
Dispose of the packing in an environmentally friendly manner. Observe the labelling on the various packaging materials and
separate them if necessary. The packaging materials are marked with abbreviations (a) and (b) with the following meaning:
1–7: plastics, 20–22: paper and cardboard, 80–98: composites
You can nd out how to dispose of obsolete devices from your local authority or town council.
Guarantee
Always keep the original receipt in a safe place. This document is needed as proof of purchase. Contact us via e-mail at: info@cfh-gmbh.de if
you have a guarantee claim. We will contact you immediately.
We reserve the right to make technical and visual changes.
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