Kunststoffschweißtechnik
Starting and operating
Chapter 5
01.02.2012
Working Instructions WIDOS 2500 / OD 250
Page 19 of 45
5.5.4.
Adjusting
•
The adjusting pressure for the pipe dimension to be welded can be gathered from the
welding table.
•
Open support again slightly.
•
Gather heating time, maximum change over time, cooling time and bead height for the pipe
dimension to be welded from the table.
•
Check the heating temperature. If the control lamp blinks, the nominal temperature has been
reached and is kept constant by means of a defined pulse-position ratio.
•
Swivel in the heating element which has been cleaned and brought to desired temperature.
If necessary wait until the control lamp at the heating element is blinking in regular intervals.
•
Drive the slides together by the hand wheel (chapter: 4.1 no. 7), shock-free under the
determined aligning force.
Read the applied force from the scale (no. 2).
•
Fix the slide by the lever (no. 3) and maintain the force.
Necessarily hold tight
to the turnstile before you release the clamping lever and
if the slides have been driven together with force!
•
As soon as the prescribed bead height is reached, reduce the force (heating force = appr.10
% of adjusting force).
Important!
Do not open the slide.
5.5.5.
Heating
•
Now the heating time starts.
•
Press the stop-watch and compare the actual time with the nominal time taken from the
welding table.
5.5.6.
Change over
•
Quickly drive the slide apart after the heating time has elapsed, release the clamping lever;
necessarily
hold tight to the turnstile.
•
Swivel the heating element as quickly as possible back and close the support smoothly.
The maximum time frame for this process is predetermined by the value for the change over
time taken from the table.
5.5.7. Cooling
•
Built up the welding force, arrest the support by the lever and press the stop-watch.
•
If necessary, re-adjust the force during the cooling time (cooling force = adjusting force).
