Operation; General Information On The Applied Procedure; Preparing The Welding Process; Turning The Welding Unit On - Rothenberger ROWELD ROFUSE Basic 48 Instructions D'utilisation

The unit may be operated within a temperature range from –10°C to +60°C. The output voltage at the
welding cable is max. 48 volts transformed by galvanic separation.
5

Operation

5.1

General Information on the Applied Procedure

Electrofusion welding is characterized by thermal fusion of the outer surface of the pipe and the inner
surface of the weld fitting by heating the heater coil incorporated into the fitting. In this process, the weld
fitting shrinks and thereby creates the contact pressure needed to carry out the fusion of pipe and fitting
surfaces. The automatic welding unit provides the electrical energy needed to perform this and control the
energy supply according to certain parameters, such as ambient temperature.
5.2

Preparing the Welding Process

In all cases, the relevant information supplied by the manufacturer of the pipe and the fitting have to be
respected. First, both pipe butt have to be cut at right angles and level using appropriate tools. Then,
using a chamfering and peeling tool or a handheld scraper, chamfer the edge and smoothen the pipe
surface up to the length it will be inserted into the fitting. Then, the weld surface that is achieved by this
process has to be de-fatted using an appropriate solvent (non-fibrous paper, spirit or suitable alcohol).
Make sure nobody touches the cleansed surface and secure pipe and fitting for the welding operation.
5.3

Turning the Welding Unit On

After connecting the power supply cable to the mains power or a generator,
turn the welding device on using the main switch. This causes Display 1 to
show.
Then the screen changes to Display 2.
CAUTION! Beware of Sytem Errors
If an error is detected during the auto-test, a "System Error" message is
displayed. Disconnect the welding device from the power supply and the
fitting immediately. Have it sent to the manufacturer and repaired.
5.4

Entering the Welder ID Code

The welding unit can be configured to ask for the welder identification code before the fitting code is en-
tered. The display screen then shows the message "Enter Welder Code." The numeric code can be en-
tered either by reading it from a tag with the scanning pen or by using the arrow keys ×, Ø, Õ, Ö.
When the welder code is read from a bar code using the scanning pen, an
audible signal confirms this and the screen shows the next input display.
When the code is entered manually, it is saved by pressing the START key. If
the code entered is not correct, a "Code Error" message appears; check the
sequence of numbers and correct as needed. If the code entered is correct, it
is saved to system memory and inserted into the welding reports to be printed.
If the welder code feature is disabled, the input screen for the welder code will not show.
5.5

Connecting the Electrofusion Fitting

As soon as the fitting is connected, the "No Contact" message disappears.
Connect the cable connectors to the fitting and check for proper contact. If needed, use appropriate push-
on adapters. The contact surfaces of the cable connectors and the fitting have to be clean. Dirty contacts
may lead to improper welding and also to overheated and fused cable connectors. Eliminate visible
deposits as needed. Protect connectors from getting dirty in all cases. If a deposit layer has formed that
cannot be eliminated entirely or if the the fit when contacting becomes less tight, then replace the cable
18
Roweld
Welder
ROFUSE BASIC 48
Version 1.00
Display 1
Enter Fitting Code
14:32 21.10.06
Power 230V 50Hz
No Contact
Display 2
Enter Welder Code
********************
Display 3