Hydraulic set
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Filling
The hydraulic set must be filled with the coil medium specified in the technical data sheet in the
appropriate concentration. Water quality according to VDI 2035. Too high glycol ratio causes reduced
performance, too low glycol content can predispose to frost damage.
The filling process of the hydraulic set can be performed together with the filling of the piping system.
Check connection points for leaks while filling is still in progress; retighten screw connections and
packing glands if necessary.
Exhaust ventilating
NOTE
Material damage due to inadequate venting
If systems are not properly vented, air pockets will form which can lead to reduced
performance or pump damage.
• Exhaust ventilate the system according to VDI 2035 during system filling at the
highest point of the system.
The hydraulic set must be exhaust ventilate at the highest point of the system during system filling in
accordance with VDI 2035.
• Open venting devices of the system.
• For vertical multi-stage centrifugal pumps, also open a separate vent screw.
Pressure test
Optionally, proceed according to DIN 4753, part 1.
Observe the approved pressure range.
Hydraulic system
Optionally, perform hydraulic commissioning by adjusting and balancing pressures (e.g., by means of
a pressure regulating device).
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