Shower unit comprising a shower receiver and a pumping device

A shower installation, comprising:

• a shower receiver, the shower receiver consisting overall of a first part forming a shower tray and a second part consisting of a recess;
• and
• wherein the receiver has a bottom and an inner rim raised relative to the bottom, said inner rim extending along an internal perimeter of the receiver, the recess being delimited by a wall disposed above the inner rim of the receiver so that water present in the tray cannot pass over said wall and enter the recess
• a pumping device, said pumping device being disposed in said recess of said receiver and in a casing closed by a lid,
• wherein the tray includes a cup, the bottom of which cup is at a lower level than the bottom of said tray and which cup is connected to the casing of the pumping device by a first outlet pipe conveying water present in said tray to the casing, and
• wherein the pumping device comprises a pressure switch having a membrane that is deformable under pressure and a second outlet pipe for discharging water, the pressure-sensitive switch being configured so that the membrane is deformed and commands a supply of electrical power to the pump when a level of water, that is fed into the casing and rises, exceeds a prescribed threshold value.