أَوْقَفْنَا السَّحْبَ سَاعَةً لِفَحْصِ الْمِضَخَّةِ.
We suspended pumping for one hour to inspect the pump.
Sāʿatan is a duration expression; li-faḥṣi states purpose. Conflating these functions obscures what the report commits the speaker to. The stated hour describes the suspension reported; it is not, without further evidence, a timeless guarantee that every inspection can be completed within an hour.
ExpressionQuestion answered
sāʿatanFor how long?
li-faḥṣi al-miḍakhkhaFor what purpose?