Watson-Marlow 720UN and 720SN User Manual
46
16.9 Scrolling
In use, the pump’s speed can be set, up to the maximum allowed speed and down to
the minimum allowed speed, by pressing the
UP
and
DOWN
keys.
In the Scrolling section of the Setup menu, the
UP
and
DOWN
keys allow the speed
options to be set in increments of the user’s choice: one-tenth of a revolution per
minute; one half of a revolution per minute; one, two, five or ten revolutions per
minute (or their equivalents in flow rate if the pump has been configured to display
its performance in units of flow). Each press on
UP
, for example, offers a speed one
increment greater than the current speed.
Note
: For 0.1rpm, 0.5rpm and 1rpm settings, the increments increase progressively
as long as the
UP
or
DOWN
key is continually held down.
In the third screen of the Setup menu select
Scrolling
using the
UP
and
DOWN
keys. Press
ENTER
to confirm your choice.
The pump displays a screen allowing the user to set the
UP
and
DOWN
keys’
scrolling increment. Use the
UP
and
DOWN
keys to choose
0.1
,
0.5
,
1.0
,
2.0
,
5.0
or
10.0
. Press
ENTER
to confirm your choice.
The pump returns the user to the third screen of the Setup menu.
Note
: If the maximum allowed speed has been set to a figure which is not a multi-
ple of the chosen increment, the last active press on
UP
raises the speed to that max-
imum rather than to the next multiple of the chosen increment. Similarly, if the pump
is running at a speed which is not a multiple of the chosen increment, the first press
on
UP
raises the speed to the next multiple of the chosen increment.
16.10 Date and time
The pump’s real-time clock can be set with the date and time.
In the third screen of the Setup menu select
Date/time
using the
UP
and
DOWN
keys. Press
ENTER
to confirm your choice. The pump displays any pre-
vious setting.
If the setting displayed is correct, press
ENTER
. The pump redisplays the third
screen of the Setup menu.
If you wish to change the setting, use the
UP
and
DOWN
keys to enter the cur-
rent date (two digits), month (three letters), year (four digits), hour, minute and
second (all two digits), pressing
ENTER
to confirm each one.
When
ENTER
is pressed to confirm the seconds, the pump redisplays the third
screen of the Setup menu.
