0 About this manual
Operating instructions GF 500
2
0.2
Other symbols and notices
Symbol Meaning
Mandatory: you must observe this regulation.
1.
Call for action in a particular sequence. You must do
something here.
X
Single call for action. You must do something here.
Z
Call for action under certain circumstances. You must do
something here if the condition beforehand has been
fulfilled.
0.3
Abbreviations
Abbr. Meaning
GF 500
Butt fusion machine d 200–500 mm
DVS
Deutscher Verband für Schweisstechnik
(German Association of Fusion Technology)
HD-PE High
Density
Polyethylene
PE Polyethylene
PP Polypropylene
PVDF Polyvinylidene
fluoride
PTFE Polytetrafluorethylene
d Pipe
outer
diameter
Important
Attention
This notice contains especially important information.