User`s guide

4-16
Operation 4
• The pump will start either when the Run soft key
is pressed, or when the start input is activated.
• The pump will stop when the Stop soft key is
pressed, or when the stop input is activated.
Modifying the Flow Rate
The flow rate can be modified at any time during a
run by keying in a new value. It is possible to
review and change the pump and I/O setup pa-
rameters except the pump head size during a run.
Press the Menu soft key and follow the setup
procedures described pages 4-10 to 4-15.
Operation of the Pressure Limits in the Flow
Mode
The maximum pressure limit depends on the
defined Refill Time and Compressibility. If the
parameters defined in the I/O setup procedure are
not compatible with the flow rate entered, the
message Invalid settings will flash on the screen
after the Run soft key is pressed, or the start input
activated. In this case you must lower the refill time
or the flow rate.
If there is a high pressure error, the pump will stop
and the message High pressure limit will flash on
the screen. The alarm will sound if it is pro-
grammed to be on. The pump will start again when
the pressure drops below the defined limit. This
cycle will continue indefinitely.
If there is a low pressure error, the pump will stop
and the message Low pressure limit will flash on
the screen. The alarm will sound if it is pro-
grammed to be on. The pump will stay in this
condition until the Stop soft key is pressed.
The flow mode can be simulated in the Program
mode, with the advantage of having safety error
files and having the option of including timed
events.
Mode Selection