Ritmo UP 125 Manual De Instrucciones Y Mantenimiento página 15

Close the jaws to firmly hold the fitting.
Tighten the knob to secure the jaws' position.
HOT IRON
Mount the dies suitable to the parts to be welded. The dies must couple with
both main pipe and fitting.
The contact surfaces must ensure a good heat transmission.
Wait till the dies have reached the working temperature.
WELDING
Insert the iron between the fitting and the main pipe, then bring the areas to
be welded into contact with the dies.
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