To pump sewage. Sewage ejector pumps (fig. 6-18) for dry-pit installations have a connection on the suction end of the pump that is piped to a separate wet pit.

The dry-basin type of sewage ejector pump equipment includes the following:

The pump with suction and discharge piping up to the floor plate

An electric motor, a steel ejector basin with separate sewage and pump compartments

A high-water alarm

An automatic alternator

Float switches

A floor-mounted control panel

Motor switches

Automatic starters

An iron access ladder

Complete basin covers welded or riveted to the basin

The wet-basin (duplex wet-basin nonclog sewage ejector) type of sewage ejector pump equipment includes the following:

The pump and fittings

Electric motors

Float switches

Figure 6-18. - Sewage ejector centrifugal pumps.