© by WilTec Wildanger Technik GmbH
Item 62551
Page 10
12 2021
-1
Cleaning the welding gun
The pressure applied on the feed roller causes the removal of metal dust from the surface of the welding
wires; this dust gets into the wire feed mechanism. In case the wire feed is not cleaned, it will get stuck
gradually, causing dysfunctions of the wire feed. Clean the wire feed as follows:
1.
Remove the gas nozzle of the welding gun, the contact nozzles, and contact nozzle adaptor.
2.
Apply pressurised air through the feed with the help of a pneumatic gun.
3.
Also blow out the feed control and coil housing with compressed air.
4.
Reattach the components of the welding gun. Re-tighten the contact tip and the contact tip
adaptor to ensure fixedness.
Replacing the wire feed
In case the wire feed is too much worn or completely clogged, replace it as follows:
1.
Disconnect the welding gun from the device.
a)
Disconnect the supply cord of the gun from the terminal of the device.
b)
Disconnect the plug of the discharge lines of the device.
c)
Open the fixing nut of the gun.
d)
Carefully remove the gun from the device as soon as all parts emerge through the cable
hole of the front part.
2.
Open the fixing nut that exposes the end of the wire feed.
3.
Align the cable of the welding gun and remove the wire feed from the collet.
4.
Slide a new feed into the gun. Make sure that the wire feed enters completely into the contact
nozzle adaptor and that there is an O-ring at the end of the guide that is directed towards the
device.
5.
Tighten the wire feed with the help of the fixing nut.
6.
Cut off the wire feed at approximately 2
mm before the fixing nut and lime the sharp edges of
the cut-off spot round.
7.
Reattach the gun to its place and tighten all components.
Technical specifications
MIG/MMA-140
MIG/MMA-160
MIG/MMA-180
MIG/MMA-200
MIG/MMA-250
Intake voltage
(V)
1~220 ±10
%
1~230 ±10
%
Frequency
(
㎐
)
50/60
Capacity
(kVA)
3.9
4.5
5.0
5.6
7.0
Current
(A)
50–140
50–160
50–180
50–200
50–200
Nominal oper-
ating time
(%)
60
Power factor
0.93
Efficiency
(%)
85
Wire-feed con-
trol
internal
Wire
feed
speed
(
m
⁄
min
)
2.5–10
2.5–12
2.5–12
2.5–12
2.5–12
Roller diame-
ter
(
㎜
)
R=200
