Checking The System Standstill Pressure; Completing Venting - Siemens SINAMICS S120 Manual

Danger of injury caused by spray water
The coolant is harmful to eyes and skin and can damage surfaces.
If the air escapes intermittently, coolant spray can come into contact with your skin or eyes.
• Therefore, use appropriate protective clothing for all work on the drive. However, if your
• Please refer to the EU safety data sheet of the coolant manufacturer.
5.3.1.5

Checking the system standstill pressure

The system standstill pressure falls significantly when the system is vented. Continue filling
coolant into the system via the drum pump until the system standstill pressure is
approx. 2.1 bar.
5.3.1.6

Completing venting

Vent the pumps, heat exchanger and components and fill with short pauses several times.
Allow the system to stabilize a short time after each venting so that the air can collect at the
highest points. Because the coolant is viscous, the air bubbles only gather at the highest
points slowly and with difficulty.
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
CAUTION
eyes or skin do come into contact with coolant, rinse the affected area thoroughly with
tap water as soon as possible. If coolant has escaped, remove the liquid from the
affected surfaces.
Commissioning the cooling circuit
5.3 Filling the internal deionized water circuit
127