Translations:Instrukcja Train Driver 2 (maszynista)/13/en

Before first activation of fast switch (WS), unlock (with chosen driving direction) over-relays of converters, train heating and differential relay depend on holding fast switch. Closing it is depend on additional contacts of that relays. Next push fast switch button waiting for "Wyłącznik Szybki (fast switch) lamp". If locomotive startup was made with usage of pantograph compressor, in the moment of fast switch activation, passive contact on its ladder breaks pantograph compressor circuit, powers compressor off, if we don't have powered it off using lever switch.