Hygromatik Blow-Down pump , The control system decides automatically when it is necessary to dilute the concentration of dissolved solids in the steam cylinder. Full Blow-Down: Depending on the quality of the water the steam cylinder will be drained completely every 3 to 8 days.

Hygromatik Blow-Down pump Manual Drain:

Press the on/off control switch in position “II”. The
water will be drained manually..

Note: The cylinder base is equipped with a hose for
manual draining. See Technical Documentation, For
the User, chapter

Stand by – 
(optional)

If the unit is on stand-by for an extended time period it can drain itself automatically. This prevents standing
cylinder water. Normally this function is not activated. Standard setting is six hours. This function can be activated and set only by HYGROMATIK.

Main Contactor “Off” during
Blow-down Process.
The jumper ST9 determines the switching position of
the main contactor during a blow-down process.
Main contactor On: Jumper ST9 is not set
(Factory setting)
Main contactor Off: Jumper ST9 is set.