ha precalentado

Present perfect él/ella/usted conjugation of precalentar.

precalentar

to preheat

to warm up

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Asegúrese de que el bloque calentador se ha precalentado a una temperatura dentro del rango 45°C ±5°C.

Be sure your heater block has been preheated to a temperature within the 45°C ±5°C range.

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