WIDOS
Einsteinstraße 5
Phone
+49 7152 9939 0
Wilhelm Dommer Söhne
D-71254 Ditzingen
Fax
+49 7152 9939 40
GmbH
Internet: www.widos.de
06.05.2019
Working Instructions WIDOS 2500 / OD 315 with T-90°
Page 12 of 35
3.
Functional description
B a s i c a l l y t h e i n t e r n a t i o n a l a n d n a t i o n a l g u i d e l i n e s a r e t o b e f o l l o w e d .
The plastic pipes are clamped by means of clamping devices. Then the front sides of the pipes are cut
plane and parallel by means of the planer and the misalignment of the pipes is checked.
The cleaned and heated heating element is inserted and the pipes are pressed against the heating
element under defined adjusting force. This process is called "adjusting".
The applied force can be read on the scale. After the prescribed bead height being reached, the force
is reduced, the heating time begins. The function of this time is to heat up the pipe ends.
After expiration of the heating time, the slide is opened, the heating element is removed quickly and the
pipes are driven together again. The time gap from the removal of the heating element to joining the
pipes is called change over time.
The pipes are joined under prescribed welding force and then cool down under pressure (cooling
time).
The welded pipes can be unclamped, the welding process is finished.
Heating element heats
the pipes up to welding
temperature
Finished welding
with internal and
external bead
