Kemppi Feed 420R - Manual (Page 13)

Kempomig Feed 420R, 120R / 0429 – 13 ©
COPYRIGHT KEMPPI OY
The following installing instructions are valid for most gas fl ow 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.
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 fi lled 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 fl ow
(or pressure). When regulating fl ow amount, the power source should be in switched on and
the gun switch pressed simultaniously.
Close bottle valve after having fi nished welding. If the machine will be out of use for a long
time, unscrew the pressure regulation screw.
3. FEED 420R FUNCTIONS
3.1. FUNCTION PANEL
3.2. SELECTION OF WELDING PROCESS
Synergic MIG / MAG welding (1-knob MIG): MIG welding, where wire
feed speed defi nes values of other welding parameters enabling power level
adjustment of welding from one control knob. Dependence of welding
parameters from wire feed speed is defi ned by choice of synergic curve for
fi ller wire and gas being used.
MIG / MAG welding with independent wire feed and voltage controls.
3.3. BASIC ADJUSTMENTS, BASIC DISPLAYS