7 Fusion
Operating instructions GF 500
18
Joining
(Fusion process)
X
Push joystick in “close ><“ position until pipes touch each other and
the preset fusion pressure is reached. Hold this position for 15 sec.
Then slowly return the joystick in to 0-position.
The surfaces to be joined are fused.
Z
Place the heating element in the storage case without
damaging or contaminating the fusion surfaces.
Cooling
(the fusion joint)
The cooling time must always be observed. The use of cooling agents is not
permitted during cooling.
Releasing
(the hydraulic system)
Danger of bruising!
X
Release the pressure of the hydraulic system before opening the
clamping stations.
1.
Move control lever towards “open <>“ (lever position: halfway
between neutral and fully open) until pressure on manometer shows
nearly 0.
Do not open machine slides.
2.
Open clamping station before removing welded pipes/fittings.
All fusion joints must have cooled completely before the pressure test is
performed. This is generally the case approx. 1 hour after the last fusion
operation.
7.3
Visual check of welding bead
Immediately after removing the welded pipes/fittings visually check the
part for correct cultivated double bead and the k-value.
Attention
Warning
Caution
Caution
Even double
bead
k > 0
