widos HRG 6 Segment, Перевод инструкций по эксплуатации

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Starting and operating Chapter 5
06/06/19 Working Instructions WIDOS HRG 6, Segment Page 22 of 47

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.
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!

Turn and remove the locking bolts from the planer; by this you release the locking of the flexible
supporting fork.

Put the planer e.g. by a crane between the clamped tools and necessarily lock the supporting
fork by the locking bolt (chapter: 4.3.1).

Switch on the planer. Drive the pipes towards the planer, valve lever on: „FORWARDS“, and carry
out planing of the pipes with a pressure of appr. 20 bars until a revolving chip (triple) has generated.

Drive the pipes apart until the chip tears off, valve lever on: „BACKWARDS“, only then switch off
the planer.

Turn and remove the locking bolt, afterwards lift the planer out of the machine and put in the safety
bolt.

Put the planer e.g. into the optional heat-protection box.

Shut the slides (valve lever on: “FORWWARDS” thereby reading the movement pressure on the
pressure gauge. The movement pressure is displayed exactly when the slide with the clamped pipe
passes over into its movement.

Check pipe mismatch and gap on the joining pipe ends. According to DVS 2207, the mismatch on the
pipe outer side must not exceed 0.1 x pipe wall thickness, the admissible gap must not exceed 1.5
mm. The mismatch compensation is carried out by further tightening or releasing of the clamping
nuts.

The adjustment pressure for the pipe dimension to be welded can be gathered from the welding
table. Add the movement pressure.

Set the resulting pressure value at the pressure relief valve and check it by actuating the valve
lever.

Open slides again slightly, valve lever on: „BACKWARDS“.

Gather heating time, maximum change over time, cooling time and bead height for the pipe
dimension to be welded from the table.

Move the heating element which has been cleaned and brought to desired temperature, between
the pipes, if necessary wait until the control lamp on the heating element blinks in regular intervals.

Shut slides smoothly to the set adjustment pressure, valve lever on: „FORWARDS“.