Kemppi Pulse 3000 MVU - Manual (Page 12)

EN
8. Open the needle valve if there is one in the regulator.
9. Turn the regulation screw (B) until the hose pressure meter (G) displays the required flow
(or pressure). When regulating the flow amount, the power source should be switched
on and the "GAS PURGE" -switch pressed simultanously.
Close the bottle valve after welding is finished. If the machine will not be in use for a long
time, unscrew the pressure regulation screw.
NOTE! Always fasten the gas cylinder securely in an upright position on a wall rack intended for the
purpose or on a cylinder cart. Always close the cylinder valve after you have finished welding.
3. OPeratiOn
3.1 main sWitCH anD signal ligHts
With the switch in the ’I’ position, the primary and control circuits of the machine become
live and the ’ON’ signal light on the panel lights up. The welding circuit receives voltage when
the gun switch is operated or when the wire feed test switch is pressed. Always use the main
switch to turn the machine on and off with the main switch; do not use the power plug for this
purpose.
3.2 tO seleCt POlaritY FOr WelDing
Solid wire is usually welded in the +pole and gasfree filler wires in the - pole gun. When
welding with other filler wires, check for the recommended polarity on the package or consult
the supplier of the product. The welding of very thin steelplates (0.5 to 0.7 mm) a - polarity
might also work best for solid wire.
3.2.1 Changing the polarity
- pole
+ pole
NOTE! Only a service shop authorised by Kemppi may change the polarity.
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Kempac
t P
ulse 3000 MVU / © Kemppi O
y / 1026