Publicité
Les langues disponibles
Les langues disponibles
D
C
E
Fig. 8: Example of a foundation screwed con-
nection
Connection of the pipes
r ≈ 2,5 * (d-2s)
5 x DN
Fig. 9: Settling section upstream and down-
stream of the pump
Installation and operating instructions • Wilo-Atmos GIGA-I/-D/-B • Ed.01/2023-08
min. 5 mm
NOTICE
When pumping from an open tank (e.g. cooling tower), ensure that there is
always a sufficient liquid level above the pump's suction port. This pre-
vents the pump from running dry. The minimum inlet pressure must be
observed.
NOTICE
In the case of insulated systems, only the pump housing may be insulated.
Never insulate the lantern and motor.
Example of a foundation screwed connection
•
Align the complete unit when installing it on the foundation with the help of the spirit
A B
level (at the shaft/discharge port).
•
Always put the washers (B) to the left and right directly at the fixation material (e.g. stone
bolts (A)) between the baseplate (E) and foundation (D).
•
Evenly and firmly tighten the fixation material.
•
For distances > 0.75 m, support the baseplate at the centre between the fixation ele-
ments.
CAUTION
Risk of damage due to incorrect handling!
The pump may never be used as a fixed point for the pipe.
•
The present NPSH of the system always has to be greater than the required NPSH of the
pump.
•
The forces and torques being exerted by the pipeline system on the pump flange (e.g., by
warping, thermal expansion) may not exceed the permitted forces and torques.
•
The pipes and pump must be free of mechanical stress when installed.
•
The pipes must be fixed in such a way that the pump does not have to support the weight
of the pipes.
•
The suction line is to be kept as short as possible. Lay the suction line to the pump so that
it continuously rises while the inlet falls. Avoid possible air entry points.
•
If a dirt trap in the suction line is required, its free cross-section has to be 3 – 4 times the
cross-section of the pipe.
•
For short pipes, the nominal diameters must be at least those of the pump connections.
For long pipes, determine the most economical nominal diameter in each case.
•
To avoid higher pressure losses, make adapters for larger nominal diameters with an ex-
tension angle of approx. 8.
Pump housing and motor supported
en
65
Publicité
