Fronius MTG 400i K4 Instructions De Service page 40

Service, maintenance and disposal
General Regular and preventive maintenance of the welding torch are important factors
in achieving problem-free operation. The welding torch is subjected to high tem-
peratures and high levels of soiling. This is why the welding torch needs more fre-
quent maintenance than other components of the welding system.
Identifying de-
1.
fective wearing
parts
1.
2.
3.
4.
5.
40
2.
Insulating parts
- Burnt outer edges, notches
Nozzle fittings
- Burnt outer edges, notches
- Heavily coated with welding spatter
Spatter guard
- Burnt outer edges, notches
Contact tips
- Ground (oval) wire entry and wire exit bores
- Heavily coated with welding spatter
- Penetration at the tip of the contact tip
Gas nozzles
- Heavily coated with welding spatter
- Burnt outer edges
- Notches
CAUTION!
Risk of damage due to improper hand-
ling of the welding torch.
Serious damage may result.
▶
Do not hit the welding torch on
hard objects.
▶
Avoid scoring and scratches in the
contact tip.
▶
Do not bend the torch body under
any circumstances.
3. 4. 5.