18
For a control of the complete surface removal over the entire surface, we
recommend to apply marking (control) lines (see Figure 13). If during scraping
of the surface non-scraped areas occur at some points, these areas are to
be reworked.
The processed zone is to be protected against dirt, soap, grease,
subsequently flowing water and unfavourable effects of weather (e.g.
moisture, frost formation).
5.1.2 Cleaning
The surfaces of the pipes to be fused and the interior surfaces of the
FRIALEN
®
DAA-TL Pressure Tapping Tees Top-Loading
must be
absolutely clean, dry and free from any grease. These areas are to be
cleaned with a suitable cleaning agent and
exclusively with absorbent,
lint-free and non-dyed
paper directly before the assembly and after
scraping.
We recommend PE cleaning agents which meet the requirements of the test
basis DVGW-VP 603, e.g. AHK cleaning agents.
When cleaning, ensure that no contaminations from the unscraped pipe
surface are introduced into the fusion zone.
WARNING!
When using alcoholic cleaning agents, the alcohol percentage must be
at least 99.8% according to DVGW-VP 603.
The cleaning agent
must be completely evaporated
before starting the
fusion process.
Subsequently, re-apply marking line for the fusion zone width with the
FRIALEN
®
marker
because this line was removed during scraping and
cleaning. The joint surfaces must be clean and dry before installing the
fitting. The cleaned fusion zone should not be touched with bare hands.
Moisture in the area of the joint area, e.g. because of dew or frost, is to be
removed using suitable aids.
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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