They have a litre scale and a black screw cap

"Power on": Motor is running (rotating green indicator lights) or not running (permanently green indicator lights)

The pump does not start unless the phase sequence is correct

stroke signal

DDA 30-4 FCM-PV/T/C WITH ACCES The SMART Digital DDA is a compact positive displacement

cr 1 2 a a a v hqqv 93391180 They have a litre scaleVertical, multistage centrifugal pump with inlet and outlet ports on same the level (inline). The pump head and base are in cast iron all other wetted parts are in stainless steel. A cartridge shaft seal ensures high reliability, safe handling, and easy access and service. Power transmission is via a rigid split coupling. The pump is fitted with a 3 phase, fan cooled asynchronous motor.