Welding; Putting Out Of Operation; General Requirements; Important Information On Welding Parameters - Rothenberger ROWELD P 250 A Bedienungsanleitung

The axial offset between the workpieces must not be more than 10% of the wall thicknes and the
gap between the flat pipe surfaces must be more than 0,5 mm (according DVS). Otherwise ad-
just with help of the clamping screws and repeat trimming.
The trimmed surfaces prepared for welding must not be touched with the hands and must
be kept free of dirt!
3.2.3

Welding

Risk of crushing! Always maintain a safe distance from the machine when moving
clamping tools and pipes together! Never reach into the working area!
 Swivel the heating element between the two workpieces.
 Move pipe ends together, apply required adjusting force and hold on by screwing up the
knurled handle.
 As soon as the required bead height is reached evenly over the entire circumference at the
pipe ends, disengage the knurled handle, reduce the force to the corresponding preheating
force and screw up the knurled handle tightly again. It must be ensured that the workpiece
ends about evenly to the heating plate.
 After the preheating time is over, disengage clamping lever move workpieces apart, swivel
out the heating element and move the workpiece ends together again. While doing this, in-
crease the corresponding joining force as linearly as possible until the nominal force is
reached (see the accompanying book for welding parameters) and pull the clamping lever.
The joining force must be maintained during the entire cooling period.
 At the end of the cooling period, release the pressure via loosen the knurled handle and re-
lease the handle bar. Unclamp and take out the welded tube sections.
All welding parameters can be found in the enclosed welding tables.
3.2.4

Putting out of operation

 Switch off heating element.
 Unplug the heating element and trimmer unit.
 Swivel trimmer and heating element into the space between the main clamps and unscrew
the handle bars.
 Wind up flex.
The hotplate must be cooled off!
 Put the machine with upper part of the transport box from the base of transport box, the
base put over the machine, and close the locks.
3.3

General requirements

As weather and ambient conditions can seriously effect welding procedures and joints, it is es-
sential to duly observe national welding guidelines and ordinances, e. g. DVS Guideline 2207,
Sections 1, 11 and 15.
Welding requires continuous and due supervision and monitoring!
3.4

Important information on welding parameters

For welding parameters such as temperature, pressure and time, consult your national welding
guidelines and ordinances, e. g. DVS Guideline 2207, Sections 1, 11 and 15.
Ordering: DVS Media GmbH, Aachener Str. 172, 40223 Düsseldorf
Postfach 10 19 65, 40010 Düsseldorf, Tel.: +49 (0) 211 / 15 91 – 0
Email: media@dvs-hg.de internet: www.dvs-media.info
In the event of doubt, consult the pipe manufacturer for material-specific welding parameters.
The welding parameters specified in the welding tables are strictly reference values. ROTHEN-
BERGER cannot assume any liability for their accuracy or completeness!
ENGLISH 15