Kunststoffschweißtechnik
Starting and operating
Chapter 5
26/04/11
Working Instructions WIDOS HRG 10, Segment
Page 21 of 49
5.3 Setting the heating element temperature
Display = Display of the actual value
Push shortly the button P (1), the display shows <SP>,
change desired value with buttons ▲ (3) ▼ (2). Push
shortly the button P (1), actual temperature is displayed
again (or automatic change after 30s). During heating up to
desired value, the control lamp K2 (4) is on, having reached
the desired temperature, the control lamp K2 (4) is blinking.
5.4 Welding process
The respectively valid welding prescriptions (ISO / CEN / DVS ...) are to be followed
basically.
•
Wear safety gloves as protection against combustion!
•
A stop-watch must be available to record the actual times for heating and cooling.
•
A welding table must be available from which the parameters may be taken for the pipe
dimensions to be welded prescribed by the welding prescriptions.
•
The heating element surfaces must be clean, especially non greasy, therefore they need to
be cleaned shortly before each welding or in case of dirtiness by means of a fiber-free
paper and a cleaning agent (e.g. PE-cleaner). The anti-adhesive coating of the heating
element must remain undamaged in the working area.
•
Observe the ambient conditions:
Welding must not be carried out upon direct solar radiation, optionally put up the welding
tent.
•
If the surrounding temperature is under 5 °C, measures have to be taken:
-
Use a welding tent or preheat the pipe ends if necessary.
•
Connect the parts of heating element with hydraulic aggregate and set the heating element
temperature (standard value for PE-HD 210 °C) (chapter: 5.3).
•
Mount the reducer inserts according to the pipe outside diameter to be welded.
•
Lay the pipes into the clamping devices and take care that the upper clamping rings are
mounted with the locking forks showing to the machine center.
Tighten firmly the clamping nuts and align the pipe ends with respect to each other.
Always use
WIDOS
rollerstands for alignment.
