Facing The Pipe Butts; Checking Pipe Alignment And Determining Drag Pressure - HURNER Weld Control 315 2.0 Manual De Instrucciones

return to the previous inputs to correct them one step at a
time by pressing ñ.
If pipe codes were entered previously in the traceability
data for the joint, the machine automatically presents the
welding parameters contained in the pipe codes for confir-
mation.
4.3.1

Facing the Pipe Butts

To ensure that the pipe butts are level, insert the pipe fac-
ing tool between the machine carriages and turn it on. Us-
ing the carriage mover lever on the hydraulic unit, have
the movable carriage close in toward the center in order to
bring the pipes into contact with the facing tool. Use the
pressure regulator to adjust the pressure manually while the
facing tool is trimming the pipes.
The farther the carriage mover lever is pushed to the
left, the faster the carriage closes in and the faster
pressure increases. The farther it is pushed to the
Info
right, the faster the carriage of the machine moves
apart, and the faster pressure decreases.
Pipe facing should continue until shaving forms a continu-
ous blade that rolls twice or three times around the pipe
ends, so the butts are level. Facing is stopped by moving the
carriage apart with the carriage mover lever.
If you discover after the facing process that the butts are
still not flush and level, start over, insert the facing tool
and repeat the process. When facing is properly done, pipe
alignment has to be checked.
The facing process is shown on the display screen (see Dis-
play 17). The START/SET key has to be pressed by the welder
to confirm that facing is properly finished.
4.3.2

Checking Pipe Alignment and Determining Drag Pressure

When the pipes are properly faced, close in the movable
carriage completely to check whether a potential vertical
and horizontal pipe misalignment is within the tolerance
allowed by the applicable welding standard. The maximum
acceptable gap between them is displayed (see Display 18).
If pipe alignment is in order, the welding proper can start.
If the misalignment is outside tolerance, the pipes must be
readjusted in the clamps and, if needed, facing has to be re-
peated.
When pipe alignment is appropriate, move the carriage
apart using the carriage mover lever; make sure the mov-
able carriage is as far apart as possible before continuing.
Turn the maximum pressure regulator counter-clockwise as
22
EN
HÜRNER Weld Control 315 2.0 User's Manual
H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
Face Pipe Ends
230°C ACT.
Check Pipe Alignment
Max. Gap
Version May 2022
0.5bar
Display 17
:2.5mm
Display 18