geberit MEDIA Manual De Operación página 26

Operation
Observe the melting process closely: Remove the
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welding plate as soon as the welding bead is about
half the size of the wall thickness of the pipe.
A certain amount of pressure must be exerted for
welding. The required contact pressure is reached
when the corresponding pipe diameter can be read
on the pressure scale.
Carefully press together the parts to be welded with
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the operating lever until the pressure reaches the
required level on the pressure scale. Maintain this
pressure by tightening the locking handle until the
weld seam has cooled down.
Loosen the locking handle once the weld seam has
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cooled down.
Remove the eccentric levers, fold up the tension
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devices and take out the welded pipes or fittings.
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