Ritmo MUSTANG 160 V1, Руководство по эксплуатации и обслуживанию

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4.2 PREPARATION
Cut the ends of the pipes being prepared for welding at right-angles, using suitable
pipe-cutting tools (we recommend using the Ritmo pipe-cutter, refer to Figure - 1 -).
Pay careful attention to avoid any bending or ovalizing of the pipe.
4.3 CLEANING
Smoothly scrape off the oxidized surface layer from the end of the pipe or fitting using
suitable tools (we recommend the Ritmo RTC 315 pipe-scraper, refer to Figure - 2 -).
Make sure that you obtain an even, overall scraping action on the surfaces at the
pipe ends involved in the welding operation, extending over at least 1 cm for each
half of the coupling. If this cleaning is not done accurately, only a superficial bond will
be achieved, because the oxidized layer prevents molecular penetration between
the parts and thus interferes with the proper outcome of the welding action. Scraping
with sand paper, rasps, or emery grinding wheels is absolutely unsuitable.
Remove the coupling from its packaging only just before it is used and clean the
inside of the coupling in compliance with the manufacturer’s instructions.
4.4 POSITIONING
Slide the ends of the pipes into the coupling.
It is essential to use an aligning device:
- to ensure that the parts remain in a stable position throughout the welding and
cooling phases;
- to avoid any mechanical strain on the joint during the welding and cooling phases;
(we recommend using one of the aligning devices in the Ritmo range, refer to Figure -
3 -).