ROTHENBERGER ROWELD D 4/15 Aero Basic User Manual
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ENGLISH
Too low a speed will cause drive overheating!
Driven by a powerful electric motor (1), the welding rod (2) is fed into the extruder (3) and granu-
lated by the extruder screw in the process. The screw forces the granulate into the extruder noz-
zle, melting it into a homogeneous, completely plastified mass. As the molten material exits the
extruder nozzle, it is moulded by a welding shoe (4) to the geometry of the weld seem to be de-
posited.
Preheating of the base material to be joined is accomplished by a preheating nozzle (5) which is
supplied from an integrated hot air unit (6). Air is supplied either from an external compressor or
an on-board blower.
As the hand extruder does not provide for separate setting and control of the hot air temperature
and the melt temperature, we would like to point out that these two extruder types do not meet
all of the DVS requirements and may therefore not be used for certain types of welding job.
The melt temperature must have reached the preset start interlock temperature for the startup
timer to be activated. After the startup timer has timed out, the start interlock will be released
and the extruder can be started.
The temperature-controlled start interlock prevents the drive from starting if there is still unmol-
ten material in the extruder, thus precluding damage to the unit.
The output rate is variable so that the preheat temperature can be matched to the weld thick-
ness.
5
Startup and Shutoff
5.1
General
In addition to the operating instructions and the national and local accident prevention regula-
tions applicable at the place of use, the acknowledged technical rules for safe and proper work-
ing practices must be observed.
Any working practices posing a safety risk are prohibited.
Before starting / shutting off the hand extruder, make sure to carefully read the instructions un-
der section “Safety”.
Only trained and qualified personnel may be assigned to the operation of the hand ex-
truder.
5.2
Preparation
•
Place hand extruder on a firm support and secure them against toppling over as shown in
the illustration.
•
Mount hot air hood
•
Position handle
Loosen handle and move it to the ideal working position by pushing it back and forth. The
handles of these hand extruder models can also be swivelled upward and downward.