Joining And Cooling Stage; End Of Welding; Fully Manual Welding Process - Hürner Weldcontrol 160-R Bedienungsanleitung

The change-over has to be followed immediately by the joining stage.
The change-over time given on the display must not be exceeded. If it
is, the welding is aborted automatically and an error is displayed.

4.3.7 Joining and Cooling Stage

Set the carriage mover lever to its close-in position again in order to
move the pipe butts in on each other and build the joining pressure.
Watch the value on the screen. Building the joining pressure must
correspond to a linear increase, as predicted by the nominal values on
the screen. The 5 LED of the hydraulic unit diagram flashes.
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Once the joining pressure is reached and has stabilized, the pressure
will be kept at this level until the end of the joining/cooling stage
(6 LED in the diagram). In this stage, the new joint already starts
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cooling down.
Right after the end of the linear pressure ramp, at the very
beginning of the cooling, pressure may drop slightly for
technical reasons. The welder has to compensate for this drop
Important
immediately by pushing the carriage mover lever. In this case,
the first line of Display 24 reads, "Keep the pressure."
Depending on the welding standard used or on information provided
by the pipe or fitting manufacturer, a cooling-on time may be required
during which the new joint must not be exposed to external forces.
This, however, is not monitored by the hydraulic, control, and data
logging unit, for which the welding has to be considered finished
when the 7 LED is lit.
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4.3.8 End of Welding

The welding is finished at the end of the successful joining and cooling
stage. The machine releases pressure on the pipes automatically.
4.4

Fully Manual Welding Process

When you want to weld fully manually, the machine has to
be switched to Manual Mode. To do so, press the ï and 
arrow keys simultaneously while "Next Welding" is showing
on the screen. In the manual mode, the display screen looks
Info
like what Display 27 shows.
In a fully manual welding process, pipe facing, pipe alignment check,
determination of the pressure to "drag" the carriage along and of the
joining pressure (i.e., the maximum pressure of the welding, reached
during bead build-up and joining) have to be performed in the exact
same way as in the SPG Mode (see the relevant sub-sections of Sec-
tion 4.3). The only difference is that the display does not provide any
hints as to what to do. It just works as a manometer indicating the
actual pressure applied to the pipes (see Display 27). It also shows the
nominal temperature the welder has to set and the actual temperature
of the heating element, and it monitors and controls the temperature
throughout the process. The parameters for proper welding have to
be looked up in the welding value tables in the appendix.
The farther the carriage mover lever is pushed to the left,
the faster the carriage closes in and the faster pressure in-
creases. The farther it is pushed to the right, the faster the
Info carriage of the machine moves apart, and the faster pressure
decreases.
18
EN
HÜRNER WeldControl 160-R 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
Build Joining Press.
230°C NOM.
229°C ACT.
COOLING PHASE
Cooling time :1234s
230°C NOM.
229°C ACT.
COOLING PHASE
Cooling time over
229°C ACT.
*** MANUAL MODE ***
220°C NOM. ---.-bar
219°C ACT. 016.0bar
16.5bar
14.5bar
Display 24
16.5bar
16.5bar
Display 25
0.0bar
Display 26
Display 27
Version April 2011