Ritmo ELEKTRA 400, Operator'S Manual

Page: 13 / 33

12
General Fusion Procedures
Quality of joint depends on the following instructions which have be followed
carefully.
HANDLING OF PIPES & FITTINGS
When fusing, temperature of pipes & fittings have to be similar to ambient
temperature measured by machine’s probe.
Therefore they cannot be exposed to strong wind or direct sunlight : their
temperature may vary consistently from ambient temperature, affecting
negatively fusion (pipe & fittings insufficient or excessive fusion). In case of high
temperature, keep pipe & fittings away from direct sunlight and wait until their
temperature is similar to ambient temperature.
PREPARATION
Cut pipe’s edges straight, using special pipe cutters. Carefully try to eliminate
pipe’s and fittings bends or ovalizations.
CLEANING
Carefully scrape oxidized layers on pipe’s or fitting’s edges with special pipe
scrapers. Make sure scraping is uniform and complete over surfaces to be fused
exceeding the middle of the fitting of about 1 cm; lack of this type of operation
causes a superficial fusion only, since it prevents molecular interpenetration of
parts and affects fusion’s result. Scraping methods like sand paper, emery wheel
must be avoided.
Take out coupler from its protecting packaging, clean the interior according to
manufacturer’s instructions.
POSITIONING
Insert pipe’s edges into the coupler.
It is necessary to use an aligner for:
- making sure parts are steady during fusion and cooling phase;
- avoid any sort of mechanical stress on the joint during fusion cycle and
cooling;