Heating Stage; Change-Over Stage - HURNER SPG 2.0 Manual De Instrucciones

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
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35325 Mücke, Germany
If the welding parameters of the welding operation
were entered manually, the Automode is always dis-
abled.
Important
When the nominal bead height, as indicated on the screen,
is reached, the operator has to press the START/SET key to
terminate the build-up stage.
4.3.5

Heating Stage

After the bead build-up stage (1
gram) was completed, pressure must be decreased (2
in the diagram). The decreased pressure will then be applied
for the entire duration of the heat-soaking stage (3
the diagram), in which the pipe butts continue to soak heat
from the plate.
If decreasing the pressure to heating pressure takes
longer than 10 sec, the welding process aborts and
throws an error.
Important
The system also moves on to the heating stage if the opera-
tor decreases the pressure to a level below the heat-soaking
maximum before the countdown of the bead build-up stage
is completely over — which may happen if the bead is o. k.
earlier than expected. However, such a pressure decrease
has to be swift. In these cases, the bead build-up time short-
ened by the early decrease is saved to memory as the build-
up time for this welding and — in case the bead build-up
stage is automode-managed — will be used as the reference
for any further automode-managed build-up stages.
Full contact has to be continuously established be-
tween the heating plate and the bead, even with
lower pressure. While heating, if contact between
Important
them is lost somewhere along the circumference,
welding has to be aborted and repeated.
If the control unit detects an error (such as insuffi-
cient pressure not readjusted by the welder or ex-
cessive heating time), it also aborts welding and dis-
plays an error message.
4.3.6

Change-over Stage

An audible signal indicates the imminent change-
over during the last 10 seconds of the heat-soaking
stage.
Info
At the end of the heating stage, move the carriage apart.
Then remove the heating plate from in-between the pipes.
The count-down of the heating time has to be complete. It is
prohibited to remove the pipe butts away from the heating
element early. Only when Dispay 29 shows on the screen, it
is acceptable to end the heating stage.
Version November 2022
LED in the welding dia-
st
HÜRNER SPG 2.0 User's Manual
HEAT SOAK PHASE
Heat Soak Time :148s
LED
nd
230°C
229°C
LED in
rd
Remove plate
Change-over
230°C
229°C
MAX 5.0bar
ACT. 3.5bar
Display 28
: 8 s
MAX 5.0bar
ACT. 3.5bar
Display 29
21
EN