Abstract: A terminal box for a centrifugal pump is releasably connectable to an electronic extension module by a locking element. A pluggable electric interface extends through an opening from an underside of the base plate into the terminal box to electrically connect the pump control for establishing a data link. The locking element is slidable in the cavity and is movable manually from a first position to a second position and by a tool from this second position to this first position. It also has on a first side a resilient latch engaging with either a first recess of the terminal box and holding the locking element in the first position, or a second recess of the terminal box holding the locking element in the second position. Thus the locking element frees the module for plugging-in in the first position, and arrests the module in the second position.

Abstract: A plug-in electronic expansion module for pump electronics of a centrifugal pump for expanding the pump electronics with at least one additional function has a housing having a lower face and connecting formations thereon for attachment to a pump housing of the pump electronics. Electronics in the module housing provide the additional function. A base is provided on the lower face, and an electrical interface connected to the pump electronics includes a flat support projecting tongue-like from the base on the lower face of the module housing through an opening in the pump housing and carrying contact-forming electrical traces.

Abstract: A terminal box for a centrifugal pump is releasably connectable to an electronic extension module by a locking element. A pluggable electric interface extends through an opening from an underside of the base plate into the terminal box to electrically connect the pump control for establishing a data link. The locking element is slidable in the cavity and is movable manually from a first position to a second position and by a tool from this second position to this first position. It also has on a first side a resilient latch engaging with either a first recess of the terminal box and holding the locking element in the first position, or a second recess of the terminal box holding the locking element in the second position. Thus the locking element frees the module for plugging-in in the first position, and arrests the module in the second position.

Abstract: A flange for fastening a line to a pump casing, includes: a pump casing passage; and a plurality of stop members protruding in the passage and angularly distributed around the passage, the position of the flange being angularly adjustable by the stop members. A pump may include the fastening flange. A method for adjusting the position of the flange in relation to the pump is also disclosed. This method makes it possible to avoid the position of the pump casing being imposed by the orientation of the fastening flange of the pump casing.

Abstract: A flange for fastening a line to a pump casing, includes: a pump casing passage; and a plurality of stop members protruding in the passage and angularly distributed around the passage, the position of the flange being angularly adjustable by the stop members. A pump may include the fastening flange. A method for adjusting the position of the flange in relation to the pump is also disclosed. This method makes it possible to avoid the position of the pump casing being imposed by the orientation of the fastening flange of the pump casing.