Version January 2019
10
EN
HWT 125 SW 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
5.2
Aligning the Components
Align the components to each other and set the fusion
depth for the jointing process at the setpoint assistant.
1. Clamp the fitting (or, reducer, Tee, Y) into the dia-
mond between the clamps on the carriage on the
fitting side of the machine and secure it between
the jaws by turning the handwheel. Be sure that
the fitting is flush with the flange-like bead on
the edge of the clamping diamond towards the
midline of the machine.
2. Secure the fitting in the jaws using the bar fitted
to the carriage. To adjust the bar longitudinally
along the shaft that carries it, loosen and re-
tighten the locking lever on its side. The securing
bar can be moved as a whole nearer to or farther
from the fitting by loosening and retightening the
locking lever on top of it, for which two holes are
provided in the horizontal portion of the securing
bar (see figure to the right for reference).
3. Move the carriages of the machine to the start-up
position, i. e. the position at the start of the welding
process in which they have to be for the proper posi-
tioning of the components in relation to each other. To
do so, press and hold the pushbutton of the setpoint
assistant (see figure at item 5 below). Use the hand-
wheel for the carriages to close both of them in on
each other until they stop when hitting the mechanical
position stop. Go on to secure the handwheel in
that position using the appropriate locking lever
next to it. Only now, release the pushbutton of
the setpoint assistant.
4. Clamp the — possibly chamfered, depending on
the applicable welding standard, and in any case
cleaned — pipe into the jaws of the pipe-side
carriage. Turn its handwheel to where the jaws
loosely hold the pipe. Adjust it flush with the
fitting clamped into the jaws on the fitting side
of the machine. Then turn the handwheel for
the clamps on the pipe side on to where the pipe is
clamped fast between their jaws.
5. Use the roller of the setpoint assistant to set the ap-
propriate fusion depth for the upcoming welding
operation. This requires turning the roller so that
the diameter of the components that are going to be
jointed can be seen on top (see the figure on the right
for reference; this example shows the fusion depth
selected for components sized 125 mm).
Important
Be sure that the selected roller of the setpoint
assistant matches the welding standard, hence
diameter values. Only with a DVS A or DVS B or
Locking lever
on top of the
securing bar, to
reposition it as
a whole
Shaft with lateral
locking lever, to
adjust securing
bar position
longitudinally
Pushbutton
for moving
carriages
to start-up
position
(refer to
item 3)
Fusion
depth / nom-
inal size
standard of
installed
setpoint
assistant
Hex key-head screws securing
the setpoint assistant (loosen
and retighten to replace the
assistant)
