Siemens Simovert Masterdrives Operating Instructions Manual page 274

Technical Data
11-10
The operating pressure is to be adjusted according to the flow
conditions in the supply and return sides of the water cooling system.
The user must take measures to ensure that the max. permissible
operating pressure is not exceeded. Use must be made of a pressure
regulating device.
Closed-circuit cooling systems are to be provided with pressure
balancing devices with safety valve
The air must be let out of the cooling system while filling is in progress.
To ensure that the necessary volume keeps flowing, flushback filters
should be fitted instead of the normal pipe strainer. Flushback filters
automatically take care of the return flow.
These are manufactured by, for example, Reckitt Benckiser
Deutschland GmbH, D-68165 Mannheim, Tel.: ++490621/32460.
ASI 1 Information Bulletin E20125-C6038-J702-A1-7400 of February
1997 contains information about suggested plant configurations for
various applications.
Water piping must be laid with extreme care. The pipes must be
properly secured mechanically and checked for leakage.
Water pipes must under no circumstances make contact with live parts
(insulation clearance: at least 13 mm).
≤ 1.2 bar at a permissible operating pressure of 1.0 bar
*)
*)
and air venting devices.
6SE7087-6JD50
Operating Instructions SIMOVERT MASTERDRIVES
08.2009
Siemens AG