Operating instructions GF 500
7 Fusion
17
For fusion parameters, see Chapter 7.5.
Equalization
(fusion bead created on both sides)
1.
Insert Heater into “pull off” device.
2. Move the parts to be joined together, push the control lever in the
“close ><” direction.
3. Until the preset pressure has been reached, remain in this position
and hold
15 sec.
4. Slowly put the control lever back to 0 position.
Equalization pressure = fusion pressure
Release
(reduction of equalization pressure after formation of the fusion
bead)
1.
After formation of the equalization bead around the entire pipe
circumference (check fusion chart chapter 7.5), move control lever
towards “open <>“ (lever position: halfway between neutral and fully
open) until pressure on manometer shows nearly 0.
Do not open the machine, pipes have to keep contact with the heating element!
2. Start timer with preset heat soak time.
Heat soak
(of the fusion material)
For PE:
10 x wall thickness in mm
For PP:
Interpolate the intermediate values.
For PVDF: 10 x wall thickness in mm plus 40 sec.
The heat soak pressure is kept constant by the hydraulic system while
the heat soak time.
Change-over
(removing the heating element)
The change-over time should be as short as possible.
When the heat soak has ended
X
Push the control lever in the “open <>“ direction.
Z
Immediately remove the heating element from the machine.
Caution
“pull off” device
