Watson-Marlow 720DuN User Manual 25
Note: If a minimum allowed speed has been set in the Set Min Speed section
of the Setup menu, the above note on speed reduction to 0rpm does not apply.
DIRECTION (SHIFT, 1): toggles the direction of rotation shown on the dis-
play. If the pump is then started by pressing the START key, it rotates in the
new direction. If the pump is running when DIRECTION is pressed, the change
takes effect immediately.
ENTER: is used to enter/confirm numeric and menu selections. Also cycles the
information shown on the manual mode main screen exactly as START does,
whether the pump is running or not. See START, above.
MENU (SHIFT, 7): causes the main menu to be displayed, from which all
aspects of pump setup can be controlled. See 15 Main menu.
CLEAR (SHIFT, 5): clears numeric entries so that they can be entered again.
CAL (SHIFT, 8): takes the user to the calibrate sequence.
INFO (SHIFT, 3): while pressed, displays an information screen showing the
quantity of fluid pumped since the cumulative volume counter was set to zero,
and the running time elapsed since the run-time counter was set to zero.
Note: Press STOP while the information screen is displayed to set both coun-
ters to zero. To zero one counter but not the other: see 18.9 Counters.
. (decimal point, period) (SHIFT, 0): used in numeric expressions as a
decimal point. To enter 5.3, press 5, SHIFT, 0, 3. (Some languages use ,
(comma) to represent a decimal point. This pump uses .)
Keypress combinations cause the pump to function as follows:
Note: A number of the controls listed below are shortcuts to commands which are
also available through the Main menu. See 15 Main menu.
UP and 1 (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 UP while the pump is stopped: turns the display backlight on.
STOP and DOWN while the pump is stopped: turns the display backlight off.
SHIFT and UP: sets the pump to maximum allowed speed. Note: Unlike its
action elsewhere, SHIFT must be pressed and held. Note: The MAX key has a
similar function, but causes the pump to run at maximum allowed speed only
while the key is pressed.
SHIFT and DOWN: sets the pump to minimum allowed speed. Note: Unlike its
action elsewhere, SHIFT must be pressed and held.
1 (DIRECTION) and DOWN, pressed simultaneously: interrupts the display to
show the pump’s ROM version for four seconds.
START pressed and held for four 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 20 MemoDose.
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