Flow Coolers; Viscopump Ii Module; System Enhancements - Fisher AVS 470 Manual De Instrucciones

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2.3.6

Flow coolers

As was mentioned above, viscosity measurement is highly dependent on temperature constancy.
For reasons of control technology (self heating of the thermostat head), it is therefore necessary to use a CK
300 flow cooler as a counter cooler at bath temperatures exceeding 40°C.
Please read through the separate operating instructions of the CK 300 flow cooler as well.
2.3.7

ViscoPump II module

The ViscoPump II modules control the entire measurement process, among other things the temperature
pre-adaptation process of the samples in the viscometers, the process of pumping the liquid up into the
storage containers of the viscometers, the measurement of the flow times etc. The serial interface of the
AVS 470 Viscosity Measuring Unit ensures a speedy and simple data transfer with the PC.
To replace the ViscoPump II module, please proceed as follows:
– Remove the pneumatic and electrical connections from the front panel of the ViscoPump II module to be
replaced.
– Loosen the screws located at the corners of the front panel.
– Use the upper and lower insertion handles to leverage the ViscoPump II module out of its rear-side plug
connection.
– Pull the ViscoPump II module out of the AVS 470 Viscosity Measuring Unit.
– After inserting the new ViscoPump II module, please secure it again with the screws of the front panel.
Re-establish the electrical and pneumatic connections.
After start-up, please verify on the appropriate LED on the front panel that the proper operating mode is
set, i.e. "sucking" or "pressing" action; to make this setting match the respective application, please use the
corresponding hose set as described in Figure 23.
2.3.8

System enhancements

A number of functional units of the AVS 470 Viscosity Measuring Unit, such as the viscometers and the
ViscoPump II modules, can be replaced or added.
Safety information:
Make sure that the AVS 470 Viscosity Measuring Unit is always the first device you switch off!
Prior to replacing any functional unit, please be sure to the mains plug MUST be pulled out of the mains
socket.
Caution: Liquid dripping off may be hazardous to the user!
Chapter 2 initial operation