Malvern Hydro 2000uP User Manual page 27

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Software features
It features the following:
The speed of the pump (which controls the speed at which the sample is circu-
lated) is altered by moving the slider. Use the up and down arrows under the slider
for fine adjustment of the pump speed.
The power of the ultrasonic probe is altered by moving the slider. Use the up and
down arrows under the slider for fine adjustment of the ultrasonic power.
The temperature of the dispersant within the cell is continually monitored and dis-
played here. Temperature monitoring can be used in conjunction with the Sam-
pler Settings dialogue to limit the range of temperatures at which measurements
can be made.
Pressing the Pause Pump button stops the pump motor. Pressing the button a
second time restarts the pump. The indicator to the right of the button shows red if
the pump is paused, and green when the pump is running.
Pressing the Drain Valve button will open the drain valve, allowing the contents
of the cell to be emptied into the waste beaker. The indicator to the right of the
button will show red if the drain is open and green when the drain is closed.
Due to the small volume of the Hydro 2000µP and associated problems of remov-
ing bubbles from the system, a special fill sequence called Anaerobic fill can be
used. Chapter 4 gives details.
Hydro 2000µP
Pump Speed control
Ultrasound control (optional)
Warning!
When using solvents, especially those with low ignition points, minimise
the use of ultrasonics. There is a remote possibility that localised heating
caused by the ultrasonic action may cause an explosive reaction. Check the
Material Safety Data Sheets for all substances used.
Dispersant temperature
Pause Pump button
i
Note
If having difficulty with bubbles in the system, they can often be removed
by turning the pump on and off in quick succession using Pause Pump.
Drain Valve button
Anaerobic fill button
Chapter 3
Page 3-3

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