Adjustment Of Pressure; Adjustment Of Tightness Of Reel Brake; Return Current Cable; Cooling Unit - Kemppi Kempoweld WIRE 400 Operating Manual

5.6

adJustment OF pressure

Adjust the pressure of feed rolls with the control screw (20) so that the wire is fed into the wire
guide tube evenly and allows a little braking when coming out from the contact tip without
slipping at the feed rolls.
Excessive pressure causes flattening of the filler wire and damage to the coating. It also
NOTE!
causes undue wear of the feed rolls as well as friction.
5.7

adJustment OF tightness OF reel BraKe

Brake force is adjusted through hole in locking device of reel hub by screwing the control
screw (41) with screwdriver.
Adjust brake force as so big that the wire is not allowed to become too loose on the reel so
that it would spill from the reel when the rotation of the reel stops. Need for brake force is
increased with increase of wire feed speed. Since the brake loads for its part the motor, you
shouldn't keep it unnecessarily tight.
5.8

return Current CaBle

Fasten earthing press of return current cable carefully, preferably direct to welding piece.
Contact surface of press always should be as large as possible.
Clean the fastening surface from paint and rust!
Use in your Kempoweld equipment copper cables. Too small cross-sectional area might
cause overheating of connectors and insulations. Make sure that the welding gun in your use is
designed for max. welding current needed by you! Never use a damaged welding gun!
5.9

COOling unit

The cooling unit is built in the power source. All settings and operations needed for cooling
are incorporated in the power source. Read in the operation instructions the paragraph
COOLING UNIT.

5.10 shield gas

Handle gas bottle with care. There is a risk for injury if gas bottle or bottle valve is damaged!
NOTE!
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.
41
EN
13