Watson-Marlow 323Du - Manual (Page 21)

Watson-Marlow 323E, 323S, 323U and 323Du User Manual 21
15 Keypad lock
The keypad can be locked to prevent changes to pump speed or other settings,
and make it possible only to start or stop the pump. The padlock symbol will
show on the display.
Set the pump running. Hold down the START key for more than 2 seconds to
lock the keypad. The padlock symbol will show and only the START and STOP
key will function.
The keypad may also be locked while the pump is stopped. Hold down the STOP
key for more than 2 seconds. The padlock symbol will show. The pump will start
and stop but the speed and direction will be locked.
To unlock the keypad while the pump is running hold down the START key for a
further 2 seconds. The padlock symbol is removed. If the pump is stopped hold
down the STOP key until the padlock symbol is removed.
S, U, Du