7
4.2
Measure fusion zone, mark
with a FRIALEN
®
marker
and remove oxide layer
Fusion zone:
The length of the fusion zone
corresponds to half the length of the
coupler.
At first, remove contaminations from
the pipe. A processing allowance of
approx. + 5 mm in addition of the
insertion depth provides proof after
fusion that the oxide layer has been
removed properly. Using a manual
scraper or
FRIALEN
®
Scraper tools
(see Figure 4 a+b+c), the oxide layer,
which formed during on the surface
of HDPE pipes and spigot fittings
during storage, has to be removed
completely directly before the
assembly.
IMPORTANT!
The Scraper tool FWSG 710 S and
FWSG 710 L have proved them-
selves for a long time in use
application and serve for the
scraping of pipes in the dimension
area d 250 to d 710.
Besides, the FWSG 710 S scrapes
only half a sleeve length, so that it
is possible to scrape spigot
fittings. With the FWSG 710 L the
whole sleeve length is scraped to
make easier the assembly as a
slide-over coupler.
The scraper tools FWSG SE 250,
280 and 315 are proper for both,
preparation of couplers-, and
saddle assembly.
Figure 3
Figure 4b
Figure 4a
Figure 4c
FL_2104_8_GB_II_08.p65
25.03.2008, 9:48 Uhr
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Summary of Contents for FRIALEN
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