EN
43
Operating manual
ARCPULL 350
Translation of the original
instructions
5.5. THE GUN’S POLARITY
The gun’s polarity has an impact on the welds’ quality.
Depending on the type and material of the part to be welded, connecting the gun’s positive dinse to the power
source’s + or - terminal is advised. Below is a table showing the suggested manufacturer-approved polarity choices.
Welding consumables
Gun’s positive dinse
connection (red marker)
-
+
Aluminium pulling ring
Power source’s negative
dinse connection (-)
Steel pulling ring
Power source’s positive
dinse connection (+)
Rivet-extraction rod
Power source’s negative
dinse connection (-)
Stud, internally threaded stud, cop-
per-plated steel insulation nail
Power source’s positive
dinse connection (+)
5.6. THE MACHINE’S WELDING RATE
The machine’s welding speed is automatically calculated to ensure that it does not exceed an effective current of 16
A from being drawn from the mains system. Depending on the type of consumable to be welded, and therefore the
current and welding time, the machine will have a longer or shorter rest time between two welds.
Weld part
Pace
AlMg pulling ring (1.5 mm) on sheet metal with a
thickness of
1 mm
19/min
Rivet-extraction rod (Ø 5)
17/min
M6 copper-plated steel stud on sheet metal with a
thickness of 2 mm with gas shielding
8/min
M8 low-carbon steel stud on sheet metal with a
thickness of 8 mm with gas shielding
4/min
5.7. POSITIONING THE EARTH CLAMPS AND ARC BREAKAGES
Using an earthing clamp is essential, except for when setting up pulling rings for car-body repairs
(see section 7.1), where the earth connection is provided by the earthing rods (no. 4 - Fig. 2).
For welding steel or stainless steel parts up to Ø 5 mm, a single earth clamp will be sufficient. Beyond that, an earth
cable with two clamps must be used to avoid extinguishing the arc.
As a reminder, the arc’s strength is proportionate to the welding current and may be influenced by symmetrically posi
-
tioning the earth clamps. A review of standard ISO 14555 on the positioning of earth clamps in relation to the welding
configuration.