18
5
4
3
2
1
0
2
4
6
8
10
12
14
Welding time
Warming-up time
Pipe wall thickness in mm
W
elding time in minutes
Visually check the welding joint
Correct
Incorrect:
Out of axial alignment
Incorrect:
Too much pressure at
the start of the welding
procedure
Incorrect:
Uneven welding heat.
✘
✘
1
Check temperature
of the welding plate.
Do not start with the
welding procedure
before the green
light is on.
2
Only press the pipe
sections at the
beginning against
the welding plate.
Then hold without
pressure. Watch
melting process
carefully.
4
Maintain the
maximum pressure
until the welding
seam has cooled
(approximately
30 seconds). Do
not accelerate the
cooling down by
contact with cold
objects or water.
3
When melted bulge
is about as big
as half of the wall
thickness, take off
both pipe sections
simultaneously and
quickly press them
carefully together.
Increase welding
pressure until you
attain necessary
pressure (as shown
in the table to the left).
Indicative values for
welding pressure
Ø
kg
40 6
50
7
56
8
63
9
75
10
✘
✘
3
4.1.1
Butt welding by hand
(for pipes Ø 40 to 75mm)
Indicative values fo r welding and warming up times.
A Geberit welding plate KSS-160 or KSS-200,
must be used.
Jointing methods
Geberit Drainage Systems
