After filling the appliance with water, when you press your iron's steam button for the first time, you will experience a steam delay of 30 seconds. During these 30 seconds, you will hear a pumping sound (which you will also hear during normal use).
After this start-up cycle, the iron will generate steam when you press the steam button.
Please note: For PerfectCare AquaPro steam generator irons this delay could be up to a few minutes. This may happen when the iron has been stored for a long time.