Starting
and
operating
Chapter 5
23.06.2015
Working instructions WIDOS 5000 WM
Page 32 of 80
5.4.4.
Mismatch compensation
Close pipe ends with control lever on position <forwards> and check pipe misalignment and crack of the
pipe ends abutting.
Check the mismatch. According to the DVS it may not exceed 10 % of the wall thickness. The allowed crack
must not be larger than 0,5 mm for pipes ≤ 355 mm and 1,0 mm for pipes with 400…500 mm
It is possible to vertically align the pipes via the hand-wheel below the left machine table, resp. readjust the
pipe ends within the clamping tools.
As soon as a mismatch compensation is effected, the pipes have to be planed again.
5.4.5.
Adjusting
Take the bead-up pressure for the pipe dimensions to be welded from the table and add the travel pressure.
Set the so defined pressure value at the pressure limitation valve and check by putting the control lever on
<forwards>.
Open the machine again slightly, control lever on <backwards>.
Take warm up time, max. change over time, cooling time and bead height for the pipe dimensions to be
welded from the table.
Drive in cleaned and being at desired temperature heating element between the pipes with button <
>. If
required, wait until the desired temperature has been reached.
Drive machine together, control lever on <forwards>, under the set bead-up pressure without chock.
Set switch <
> on, the control lamp <
> illuminates.
5.4.6.
Heating-up
After reaching the specified bead height you reduce the pressure to near zero (≤0,01 N / mm²), with control
lever on <pressure release>.
Now the heating time begins. Press stop watch and compare actual time with the target time taken out of the
table.
5.4.7.
Change-over
After the heating time has elapsed, limitedly open the machine tables (up to the limiter stop) until the heating
element is detached from both pipe ends.
Then, as fast as possible, drive out the heating element with button <
>.
Afterwards close machine tables by pressure without abutting, control handle on <forwards>. The maximum
time frame for this process is specified by the value for the change-over time taken from the table.
Important! Set switch <
> off, the control lamp <
> extinguishes.
