Design and function
Wear part replacement
099-008232-EW501
26.05.2020
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5.8.4 Current carrying capacity and plasma gas quantities for the electrode at the posi-
tive pole or AC operation
Guide values for current carrying capacity of PHW 100 plasma nozzles, electrode
> see 5.9.3 chapter
of
dimension “L” at the positive pole or in AC operation, electrode diameter 3.2 mm / 0.13 inch.
The plasma gas used is generally Argon.
Diameter of plasma nozzles
Amount of plasma gas
Positive-pole
operation
AC operation
1.2 mm / 0.05 inch
0.2-0.4 l/min
0.05-0.11 gal/min
30 A
30 A
1.6 mm / 0.06 inch
35 A
40 A
2.0 mm / 0.08 inch
0.3-0.5 l/min
0.08-0.13 gal/min
60 A
2.4 mm / 0.09 inch
80 A
5.9 Wear part replacement
When the welding quality deteriorates, the cause in most cases is worn electrodes and / or nozzles. To
prevent damage to the welding torch, the replacement of wear parts must not be delayed unnecessarily.
Before starting any work on the welding torch, the welding system must be switched off and
secured against accidental re-start. All machine components must have cooled down.
The threads of the wear parts are all right-hand threads:
• To loosen parts: turn anti-clockwise
• To mount parts: turn clockwise
All screw and or plug connections can be made without tools.
When changing wear parts, all individual components must always be checked for damage or wear and
replaced if necessary. All part connections or sealing surfaces must be cleaned.
5.9.1 Deinstallation/Installation
Figure 5-9
Item Symbol Description
0
1
Gas nozzle
2
Gas lens
3
Plasma nozzle
4
Gas guide insert
5
Electrode
6
Sealing ring of the gas nozzle
7
Torch body
8
Collet chuck
9
Sealing ring
10
Collet housing
11
Sealing ring of the back cap
12
Back cap
