Kunststoffschweißtechnik
Starting and operating
Chapter 5
18.04.11
Working Instructions WIDOS HRG 16, Segment
Page 22 of 50
5.3. How to set the heating element temperature
Display = Display of the actual value
Push shortly button P (1), the display shows <SP>,
change desired value with buttons
▲ (3) ▼ (2). Push shortly button P (1), the actual
temperature is displayed again (or automatic change
after 30s). During heating up to desired value, the
control lamp K2 (4) is on. As soon as the desired
temperature is reached, 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 a 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.
•
Take into account the surrounding conditions:
The welding may not be performed under direct sun rays influence.
Use a welding umbrella if necessary.
•
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 heating element to the current supply and set the required welding
temperature (standard value for PE-HD: 210°C) at the thermoregulator.
•
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, respectively close the clamping cylinders and align the pipe ends with respect to each
other.
Always use
WIDOS
rollerstands for the alignment.
In order to carry out planing you must clamp the pipes in a way that they protrude
the clamping ring by at least 110 mm on the left and right (towards the inside).
Noises exceeding 80 dB (A) may occur; during planing it is obligatory to wear ear
protection!
