Watson & Sons 520DUN user manual Manual operation, Keypad functions in manual mode

14 Manual operation

14.1 Keypad functions in manual mode

All settings and functions of the pump in manual mode are set and controlled by means of key-presses. Immediately after the start-up display sequence detailed above, the manual mode main screen will be displayed. The currently selected rotation direction is indicated on the display by a clockwise or count- er-clockwise segmented arrow. If an exclamation mark ( ! ) shows, it indi- cates that Auto-restart is on (see 18.12 Auto-restart). If a padlock icon ( ) shows, it indicates that Keypad lock is on (see 14.2 Keypad lock).

Note: A number of the controls listed below are shortcuts to commands which are also available through the Main menu. See 15 Main menu.

A brief single press on each key trig- gers a beep sound (if enabled - see

14.3Keypad beep) and causes the pump to function as follows:

￿START: starts the pump at the speed and in the direction shown on the dis- play. The rotation symbol will become animated to confirm that the pump is operating. We recommend that the speed is reduced to a minimum (0.1 rpm) before starting the pump.

If the pump is running when START is pressed, it causes the information shown on the manual mode main screen to cycle from revolutions per minute, to flowrate in a choice of units (via a warning screen if flowrate has not been calibrated and if this is the first cycle since power-up) to rpm, flowrate and Run time. An example is shown here. (See START, above. See 17 Calibrate. See

18.9Run time.) This cycle operates when the pump is stopped and when it is running. The default can be altered from within the Setup menu. See 18.3 Display.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual 24