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2.2.8. Ground cable
Fasten earth clamp of ground cable carefully, preferably direct to welding piece. Contact surface
of clamp always should be as large as possible.
Clean the fastening surface from paint and rust!
Use in your MIG equipment only 70 mm
overheating of connectors and insulations.
Make sure that the welding gun in use is designed for max. welding current and loading capacity
needed by you!
Never use a damaged welding gun!
2.2.9. Shielding gas
Handle gas bottle with care. There is a risk for injury if gas bottle or bottle valve
is damaged!
For welding stainless steels, mixed gases are normally used. Check that the gas bottle valve
is suitable for the gas. The flow rate is set according to the welding power used in the job. A
suitable flow rate is normally 8 - 10 l/min. If the gas flow is not suitable, the welded joint will be
sporous. Contact your local Kemppi-dealer for choosing gas and equipment.
A
C
2.2.10. Installing gas bottle
Always fasten gas bottle properly in vertical position in a special holder on the
wall or on a carriage. Remember to close gas bottle valve after having finished
welding.
The following installing instructions are valid for most of the gas flow regulator types:
1. Step aside and open the bottle valve (A) for a while to blow out possible impurities from
the bottle valve.
2. Turn the press regulation screw (B) of the regulator until no spring pressure can be felt.
3. Close needle valve, if there is one in the regulator.
4. Install the regulator on bottle valve and tighten connecting nut (C) with a wrench.
5. Install hose spindle (D) and jacket nut (E) into gas hose and tighten with hose clamp.
6. Connect the hose with the regulator and the other end with the wire feed unit.
Tighten the jacket nut.
© KEMPPI OY
cable. Thinner cross-sectional area might cause
2
F
G
B
E
D
Parts of gas flow regulator
A Gas bottle valve
B Press regulation screw
C Connecting nut
D Hose spindle
E Jacket nut
F Gas bottle pressure meter
G Gas hose pressure meter
PROMIG 200, PROMIG 300 / 0537 – 13
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