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Watson-Marlow 620DuN and 620Du User Manual 46
vious setting.
If the setting displayed is correct, press ENTER. The pump redisplays the fifth
screen of the Setup menu.
If you wish to change the setting, use the UP and DOWN keys to enter the
current 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 fifth
screen of the Setup menu.
18.17 Backlight
The pump’s display can be illuminated or not according to choice.
In the fifth screen of the Setup menu select Backlight using the UP and
DOWN keys. Press ENTER to confirm your choice.
The pump displays a screen allowing the user to switch the display backlight on
or off. Use the UP and DOWN keys to choose On or Off and press ENTER to
confirm the decision.
The pump returns the user to the fifth screen of the Setup menu. The display is
now illuminated or not according to the user’s decision.
Alternatively ...
To turn the backlight off: press STOP and DOWN together.
To turn the backlight on: press STOP and UP together.
18.18 ROM
The pump can display its software version, model number and pump speed.
In the fifth screen of the Setup menu select ROM using the UP and DOWN
keys. Press ENTER to confirm your choice.
The pump displays the software version, model number and the maximum
allowed pump speed for four seconds (an example is shown here), then returns
the user to the fourth screen of the Setup menu. It also displays a checksum:
CHK 123, for example. This may be required if reporting pump performance to
the Watson-Marlow service department.
Alternatively ...
Press 1 (DIRECTION) and DOWN together to interrupt the display and show the
pump’s ROM version for four seconds.