4.12 WELDING
When electric arc welding must be used to
install or disassemble wear parts etc., the
ground cable must be fastened directly to the
part to be welded and as close to the welding
point as possible (figure 4.12.1).
4.13 CORROSION PREVENTION
Corrosion occurs naturally on iron and steel
surfaces. The equipment must be regularly
protected from it.
Corrosion can
— cause unnecessary breakdowns
— increase maintaining costs
— shorten useful life of equipment
— cause dangerous situations.
Corrosion is expensive and dangerous. To
ensure the most economical and safe operating
of the equipment, it should be regularly
protected against corrosion. Only accepted
methods and materials should be used.
Factors affecting the speed of corrosion:
— humidity of air
— impurities in the air
— physical factors (such as temperature, rain,
wind, etc.)
Before any long term storage the equipment
should be protected against corrosion. The
storage location as well should be considered.
After long term storage, the equipment should
be inspected for corrosion.
Figure 4.12.1 Welding arrangement
The welding current must never pass through any
connection or bearing!
Installation
GP200S
12/99
140548
4-13