EWM microplasma 20 - Machine Cooling; Workpiece Lead, General; Welding Torch Cooling System; Connection

Design and function
Transport and installation
20
099-007010-EW501
07.09.2016
4.1.2 Machine cooling
Insufficient ventilation results in a reduction in performance and equipment damage.
• Observe the ambient conditions!
• Keep the cooling air inlet and outlet clear!
• Observe the minimum distance of 0.5 m from obstacles!
4.1.3 Workpiece lead, general
CAUTION
Risk of burning due to incorrect welding current connection!
If the welding current plugs (machine connections) are not locked or if the workpiece
connection is contaminated (paint, corrosion), these connections and leads can heat up
and cause burns when touched!
• Check welding current connections on a daily basis and lock by turning to the right when
necessary.
• Clean workpiece connection thoroughly and secure properly. Do not use structural parts of
the workpiece as welding current return lead!
4.1.4 Welding torch cooling system
4.1.4.1 Connection
Figure 4-1
Item
Symbol
Description 0
1
Welding torch cooling unit
2
Coolant return from the welding torch cooling unit
3
Coolant forward flow to the welding torch cooling unit
• Lock connecting nipples of the cooling water tubes into the corresponding quick connect couplings:
Return line red to quick connect coupling, red (coolant return) and
supply line blue to quick connect coupling, blue (coolant supply).