IKA C5000 氧弹量热仪维护手册

Page 13-1 13 Care and maintenance

In order to ensure problem-free operation over a long time, the following mainte-

nance tasks should be performed on the calorimeter system:

13.1Sieve insert

Check the sieve insert daily while refilling the prepared liquid.

The entire volume of water in the system is constantly circulated and kept free of

impurities by the sieve insert in the filling sleeve of the expansion container.

This sieve insert must daily be checked for deposits and accumulations of dirt and

so forth.

If clearly visible deposits have become attached to the surface of the sieve, the

sieve must be cleaned. To do this, turn off the device, remove the cover from the

water-filling shaft and remove the filter insert (see the illustration below).

After the sieve insert has been removed, it can be rinsed off under running tap wa-

ter.

For tough dried-on deposits, the sieve can be cleaned with a brush or in an ultra-

sonic bath.

After it is cleaned, the filter insert is placed back in the unit and the opening is closed

with the cover.

·The unit must only be operated with the original filter insert. A missing filter insert may result in the device malfunctioning

·The unit must only be operated with the filling adapter cover closed. This will keep the loss of liquid from evaporation to a minimum.

13 Care and maintenance Page 13-2

During routine operation, liquid is removed from the system through evaporation and

by adhering to the decomposition vessel.

If this error message appears on the display during normal operation:

Refill with water or empty IV (=inner vessel)

you should add 50 ml of the mixture to the expansion container. If the message on

the display does not go away, repeat the refilling process in increments of 50 ml.

13.2Changing the water

The liquid in the system should be changed every 3 to 4 months. Each time you

replace the water, check the sieve for sludge (visual inspection).

Turn off the device using the Exit menu item (the cover on the measurement cell

closes automatically) and then turn the power switch to “Off”. Before draining the

water, the device must be turned off on the power switch. Open the front flap of the

measurement cell or of the measurement cells by pushing on both recesses at the

same time.

Opening the front flap

Page 13-3

Have a container with a capacity of at least 5 l ready, and lead the water outlet hose

into it. Alternatively, you can lead the outlet hose into a drain or sink. As soon as you

push the water drain hose into the water drain connection, the cooling water system

empties itself. Push on the locking button of the water drain connection to insert and

remove the hose.

After the water is replaced, the sieve insert may become dirty again in a matter

of minutes. In this case, it should be cleaned as described in Section 13.1. In

some cases this procedure must be repeated 2 or 3 times to remove all accu-

mulated deposits from the system.

Inserting the water

drain hose into the

water drain connection