17
Welding
• Check: –
Drive/ Pressure rollers (20/21)
as well as the
hot wedge (8)
must be clean before engaging
into the geomembrane liner or film.
– Cable length/Cable guide.
• Adjust welding parameters, see page 15.
• The welding temperature must be achieved.
• Guide and position the automatic welding machine into the over-lapped geomembrane liner or film.
• Switch on drive motor with
key
on
keyboard (6).
• Pull the
lever (9).
Beginning of welding process
• Check the welded seam (wash/seam thickness reduction). As required, adjust the welding speed with
keys
on
keyboard (6)
.
• The automatic welding machine is guided along the overlap with the
carrying handle/guide handle (12)
, so that
the frontal width of the overlap is kept within the 22mm zone
(see illustration F)
.
a
b
Illustration F
21
15
23
End of welding process
• Release the
tension lever (9)
1 cm before the end of the welded seam.
• Switch off the drive motor with
key
on the
keyboard (6)
. Switch off the heat-ing by pressing the and
keys
on the
keyboard (6)
simultaneously.
After completion of the welding work, allow the
hot wedge (8)
to cool down and remove the power
supply cord from the mains socket.
M
M
H
+
230
400
Test Weld
•
WARNING:
Welding parameters must be verified by means of test welds before the welding operation is
performed.
• Perform test weld as per the welding instructions of the material manufacturer and national standards, directives
or start parameters as shown in the table.
HD - PE (material thickness in mm)
1.5
2.0
2.5
3.0
420 °C
420 °C
420 °C
420 °C
5.0 m/min.
4.5 m/min.
4.2 m/min.
4.0 m/min.
1250 N
1500 N
1500 N
1500 N
15
Foil guide
21
Upper drive/pressure roller (
a
50 mm or 45 mm)
23
Chain guard of lower part
b
Max. frontal width of overlap
a
50 mm =
b
22 mm
a
45 mm =
b
24.5 mm
Overlap welding
+
–
Содержание Asto
Страница 83: ...83 Leister ASTRO Leister ASTRO PE HD PE LD PP DVS 2225 I BAM DVS BAM FI FI 230 400 CN...
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