Metrohm 788 IC Filtration Sample Processor - Manual (Page 155)

6.4 Diagnosis
788 IC Filtration Sample Processor
147
6.4.9 Beeper
x Prepare instrument for diagnosis (see section 6.4.2).
x If necessary, press <Ð> several times until
diagnosis
>beeper test
x <ENTER>
The beeper is turned on and off in an endless loop.
>beeper test
x The test can be exited by pressing the <QUIT> or <STOP> keys.
diagnosis
>rack code test
6.4.10 Rack code recognition
This diagnosis step checks the functionality of the sensors with regard
to their ability to automatically recognize the attached rack.
x Note the code (magnets) on the underside of all the racks being
used. The following diagram shows the magnet fixture on the under-
side of a rack.
Magnets inserted
In this example
The code is:
000110
Magnet fixture as viewed from underneath
x Pick up the rack and lay it on its side.
x Prepare the instrument for diagnosis (see section 6.4.2).
x If necessary press <Ð> several times until
diagnosis
>power on reset
x <ENTER>
The sample changer runs through its start routine (initializing lift and rack positions). The initiali-
zation is important because it is vital for the following diagnosis step “rack code test“ that the
rack is in the basic position.
x Prepare instrument for diagnosis (see section 6.4.2).
x If necessary press <Ð> several times until
diagnosis
>rack code test