Watson-Marlow 520Du - Manual (Page 25)

Watson-Marlow 520Du User Manual 25
DIRECTION: toggles the direction of rotation shown on the display. If the
pump is then started by pressing the START key, it rotates in the new direc-
tion. If the pump is running when DIRECTION is pressed, the change takes
effect immediately.
ENTER: cycles the information shown on the manual mode main screen 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. (See START, above. See 17 Calibrate. See 18.9
Run time.) This cycle operates when the pump is stopped and when it is run-
ning. The default can be altered from within the Setup menu. See 18.3 Display.
MENU: causes the main menu to be displayed, from which all aspects of pump
setup can be controlled. See 15 Main menu.
Keypress combinations cause the pump to function as follows:
UP and DIRECTION on power-up: toggles the keypad beep on and off.
START on power-up: switches on the Auto-restart facility. See 18.12 Auto-
restart.
STOP on power-up: switches off the Auto-restart facility. See 18.12 Auto-
restart.
STOP and DIRECTION on power-up: allows the user to press UP and DOWN
keys to toggle the sense of remote run / stop control between open=stop and
open=run.
STOP and UP while the pump is stopped: turns the display backlight on.
STOP and DOWN while the pump is stopped: turns the display backlight off.
MAX and UP: sets the pump to maximum allowed speed.
MAX and DOWN: sets the pump to minimum speed.
DIRECTION and DOWN: interrupts the display to show the pump’s ROM ver-
sion for four seconds.
START pressed and held for two seconds: toggles the keypad lock on and off.
Only the START and STOP keys are active when keypad lock is on. The pad-
lock icon is displayed.
STOP pressed and held for two seconds: toggles the keypad lock on and off.
Only the START and STOP keys are active when keypad lock is on. The pad-
lock icon is displayed.
STOP STOP within half a second: shortcut entry to MemoDose; when in
MemoDose, shortcut return to manual mode main screen. See 19 MemoDose.
Note: The maximum allowed speed of the drive defaults to 220 rpm. It is possible
to set this limit at any speed up to this value. See 18.13 Set maximum speed.