TAM 00699 29
DSD2 045 – 132 04/2018
Three-phase synchronous motor English
9.3 Instructions for installation
Coolant is supplied and discharged via smooth stainless steel tubes Ø8 x 1 on the B-side of the motors at
the sizes 71 and 100. .
A suitable connection to the external cooling circuit can be made for example using John Guest quick
connect fittings type SM 040808 S (Ø 8 to Ø 8). Any other connector approved for connecting to smooth
stainless steel tubes and capable of withstanding the operating and testing conditions may also be used.
Cooling circuit connection:
The coolant is supplied and discharged via a cylindrical threads at the sizes 56 and
132. In order to avoid housing damages only screw-in glands with cylindrical internal
threads as well are supposed to be used.
The coolant pipes should not exert compression-tension forces or torsional strain on
the motor connections.
The connection must be made by specially trained personnel .During this process the
motor must disconnected and electrically isolated.
When coupling and uncoupling the coolant pipes, make sure that coolant does not
enter the motor's terminal box.
Leak test acc. to EN 50178:
The cooling system is to be checked for leaks before commissioning by pressure
testing with coolant (water). The test pressure must be twice the operating pressure
(minimum test pressure 1 bar). The coolant used does not have to be brought to
operating temperature for this purpose. Pressure must be maintained until all areas
have been tested for leaks (minimum test duration 10 minutes).
9.4 Electrical connections
The standard power connection for water-cooled motors has to be carried out according to the
dimensional drawings of the technical documentation.
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