Watson-Marlow 520Du - Manual (Page 23)

Watson-Marlow 520Du User Manual 23
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
18.18 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 17 Calibrate. See 18.9 Run time.) This
cycle operates in a similar way if ENTER is pressed when the pump is stopped.
The default can be altered from within the Setup menu. See 18.3 Display.