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3.8. SHIELDING GAS
As MIG shielding gas is used carbon dioxide, mixed gases and argon. Shielding gas flow rate is
defined by welding current size. Typical rate of gas in welding of steel is 8-15 l / min.
Gas flow regulator
Gas flow regulator should be suitable for shielding gas used by you. The regulator being in
your use might be different from the one in picture, however, following general instructions are
valid for all pressure regulators.
Before mounting of flow regulator
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 power source.
Tighten the jacket nut.
7.
Open bottle valve slowly. Gas bottle pressure meter (F) shows the bottle pressure.
Note! Do not use the whole contents of the bottle. The bottle should be filled when
the bottle pressure is 2 bar.
8.
Open needle valve if there is one in the regulator.
9.
Turn regulation screw (B) until hose pressure meter (G) shows the required flow (or
pressure). When regulating flow amount, the power source should be switched on
and gas test button on the panel pressed simultaniously.
Close bottle valve after having finished welding. If the machine will be out of use for a long
time, unscrew the pressure regulation screw.
Gas bottle
The gas bottle may explode if it falls!
Always fasten gas bottle tightly in vertical position, to wall stand or bottle cart, spe-
cially designed for it! For safety reasons always remove gas bottle from transport
stand of the machine before lifting or car transport of machine!
COPYRIGHT KEMPPI OY
C
F
G
B
E
D
Kempomat 2500, Kempomat 3200, Kempomat 4000 / 0340 / 11
A
Gas bottle valve
B
Pressure regulation screw
C
Connecting nut
D
Hose spindle
E
Jacket nut
F
Gas bottle pressure meter
G
Gas hose pressure meter
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