Maintenance; Daily Maintenance; Maintenance Of The Wire Feed Mechanism; Cleaning The Gun Wire Liner - Kemppi FitWeld 300 Operating Manual

3.

MAINTENANCE

When considering and planning routine maintenance, please consider the the frequency of
machine use and the working environment.
Correct operation of the machine and regular maintenance will help you avoid unnecessary
downtime and equipment failure.
Disconnect the machine from the mains before handling the electrical cables.
NOTE!
3.1

Daily maintenance

• Check the overall condition of the welding gun. Remove welding spatter from the
contact tip and clean the gas nozzle. Replace worn or damaged parts. Only use original
Kemppi spare parts.
• Check the condition and connection of the welding circuit components: welding gun,
earth return cable and clamp, sockets and connectors.
• Check the condition of the feed rolls, needle bearings and shafts. Clean and lubricate
bearings and shafts with a small quantity of light machine oil if necessary. Assemble,
adjust and test function.
3.2

Maintenance of the wire feed mechanism

EN
It is recommended to service the wire feed mechanism every time the you change the wire
spool.
• Check the wear of the feed roll groove and change the feed roll if necessary.
• Clean the welding gun wire guide with compressed air if necessary.

3.2.1 Cleaning the gun wire liner

Pressure of the feed rolls remove metal dust from the filler wire's surface which then travels
in the wire liner inside the gun cable. If the wire liner is not cleaned, it gradually clogs up,
increasing drag, impairing wire feed performance and weld quality. Ultimately this will will
causes wire feed malfunctions.
To clean the wire liner:
1. Remove the welding gun from the machine.
2. Remove the welding gun's gas nozzle, contact tip and contact tip adapter.
3. With a pneumatic pistol, blow dry and filtered compressed air through the wire liner.
4. Clean the wire feed mechanism and spool housing with compressed air.
5. Reassemble the welding gun. Firmly tighten the contact tip and contact tip's adapter.

3.2.2 Replacing the wire liner

If the wire liner is too worn or totally clogged, you must replace it according to the instructions
in welding gun operating manual.
3.3

Disposal

Do not dispose of electrical equipment with normal waste!
In observance of European Directive 2002/96/EC on waste electrical and electronic
equipment, and its implementation in accordance with national law, electrical equipment
that has reached the end of its life must be collected separately and taken to an appropriate
environmentally responsible recycling facility.
The owner of the equipment is obliged to deliver a decommissioned unit to a regional
collection centre, per the instructions of local authorities or a Kemppi representative. By
applying this European Directive you will improve the environment and human health.
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FitWeld 300