Manual

IKA
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-WERKE C 2000 basic / control Ver. 04 08.07
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The cooling water temperature must fall within the range from 12 °C to 28 °C.
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If necessary (if the pressure is higher or if there are fluctuations in pressure) install a
suitable pressure control valve (for example the IKA

C 25).
The IKA

C 25 pressure control valve is set to a pre-pressure of 1 - 1.5 bar. Verify
this value after the calorimeter is ready for operation. To do this, water must be
flowing through the calorimeter! In the maintenance menu, activate the menu item
&RROLQJZDWHU and check the pre-pressure on the pressure gauge (see Section 6.4
and 11).
Now connect the water inflow line to the connection of the cold water valve.
Secure the connection with the hose clamp (included with the system).
Secure the water outlet line in place in the laboratory wash basin.
Open the fitting valve completely.
If you will be using the device in unsupervised operation, IKA

recommends you use
a standard commercial “water stop valve” in the water inflow line.
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You can place the thermostat wherever convenient, but the above rule regarding the
lengths of the water inflow and outlet lines must be observed.
Connect the water inflow line of the calorimeter with the output of the thermostat and
connect the water outlet line with the input.
Secure both hoses so that they will not be unintentionally loosened with the hose
clamps provided.
Fill the thermostat with water from the line and add Aqua-Pro (to prevent the forma-
tion of algae) according to the metering instructions.
Keep a quantity of tap water in reserve, because refilling will be required during
commissioning.
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Turn the unit on.
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As was already mentioned in Section 4.3, the temperature of the cooling water de-
termines the working temperature of the calorimeter.
When working on a cold water line, the temperature is often unknown or subject to
great daily fluctuations.
Below a temperature of the cooling water of 23 °C it is only possible to measure at a
working temperature of 25 °C, and above it at a working temperature of 30 °C.
The calorimeter tests the water connection and the current water line temperature
every time it is turned on, and (optionally adjustable) before every measurement
(see Chapter 6.5 “Configuring the system/System settings/ReInit”).
The following approximate figures apply if you are working with a thermostat or
cooling unit:
Cooling water temperature 18 °C to 20 °C: Working temperature 25 °C
Cooling water temperature 23 °C to 25 °C: Working temperature 30 °C