23
EN
Controls, connections and mechanical components
Safety
WARNING!
Danger from incorrect operation.
This can result in severe personal injury and damage to property.
► All the functions described may only be used by trained and qualified personnel.
► Fully read and understand this document.
► Fully read and understand all the Operating Instructions for the system components, 
especially the safety rules.
Front of wire-feed 
unit
No. Function
(1) Welding torch connection
for connecting the welding torch
(2) Coolant flow connection (blue) - 
is fitted as standard on WF 15i, 
WF 15i n.S., WF 30i, as an option 
for WF 25i
for connecting the coolant hose 
from the welding torch hosepack
No. Function
(3) Coolant return connection (red) - is fitted as standard on WF 15i, WF 15i n.S., 
WF 30i, as an option for WF 25i
for connecting the coolant hose from the welding torch hosepack
(4) SpeedNet connection
for connecting system add-ons - for example, a remote control unit