10 – WELDFORCE KWF 200S / 0541
© KEMPPI OY
5. Mounting of WeldForce wire feed units to boom
Wire feed unit must be mounted to boom in such a way that its chassis is galvanic
separated both from swing arm and boom.
KWF 200 needs hanging frame (accessorie) for mounting to boom. Do not hang it from handle.
2.2. ACCESSORIES CORRESPONDING TO WIRE DIAMETER
Wire feed rolls are available with plain groove, knurled groove and with U groove for different
purposes.
Feed rolls with plain groove:
Universal feed roll for welding of all kinds of wires.
Feed rolls with knurled groove:
Special feed roll for cored wires and steel wires.
Feed rolls with U groove:
Special feed roll for aluminium wires.
Trapezoid slotted, ball bearing feed wheels:
For heavy welding
Wire feed rolls has two grooves for different filler wire diameters. Correct wire groove is selected
by moving selecting washer (28) from one side to another in feed roll.
Feed rolls and wire guide tubes of wire feed unit have colour codes in order to make identification
easier.
In delivery WeldForce wire feed units are equipped with red feed rolls with plain groove and with
orange wire guide tubes for welding filler wires of 0.9 - 1.2 mm (.035”, .045” and .052”).
2.3. MOUNTING OF MIG WELDING GUN
In order to ensure trouble-free welding check in operation instructions of gun used by you that
wire guide tube and contact tip of gun are according to manufacturer’s recommendation suitable
to be used for wire feed diameter and type in question. To tight a wire guide tube might cause for
wire feed unit a bigger stress than normally as well as disturbances in wire feed.
Screw snap connector of gun tight that there won’t come any voltage losses on connecting
surface.
A loose connection will heat gun and wire feed unit and feeder.
KWF wire feed units are equipped with backup functions in case of overheating of the liquid-cooled
PMT and WS gun or overloading of the wire feed motor. The backup function is as follows (see
also the error code information, page 23):
1. The Kemppi PMT and WS gun thermal protection goes into action. When this occurs, the
unit interrupts welding and the message ‘Err 8’ appears on the panel (ls) display.
2. The wire feed motor can overload - due to, e.g., gun clogging. In this event, the unit interrupts
welding and the text ‘Err 9’ appears on the panel (ls) display.
Error codes Err 8 and Err 9 disappear on the next start-up if the cause of the error has been eliminated
(i.e., the gun has cooled down or the motor is no longer overloaded).
Feed rolls
colour filler wire
ø mm
inch
white
0.6 and 0.8
.030
red
0.9/1.0 and 1.2
.035, .045 and .052
yellow
1.4, 1.6 and 2.0
1/16 and 5/64
black
2.4
3/32
Guide tube
colour filler wire
ø mm
inch
orange
0.6-1.6
.024-1/16
blue
over 1.6
over 1/16