UMS HYPROP Operation Manual page 26

Bringing the HYPROP Refill Unit back to ambient pressure
Turn pump off. Open valve slowly and
cautiously.
Note
Never remove a tube in order to ventilate the system. The sudden pressure shock will
damage the pressure sensors in the sensor unit.
When the water in the tensio shafts and
the sensor unit has been degassed
you can continue to set up the HYPROP
(see chapter "Implementing the tensio
shafts into the sensor unit").
27 | Preparing the measurement