Gilson 402 - Manual (Page 59)

5-9
Operation - Advanced Use
5
Counters
Under normal use you should expect to fit new (or
refurbished) syringes after 30000 cycles with water.
This feature is made easy by the 402, which automati-
cally counts the number of operating cycles performed
by the syringe(s) and valve. (A cycle is completed
when the syringe leaves its home position.) You
should only need to reset these counters after
changing one or more of these items. To do this,
press Count, the Syringe Counter Screen appears.
Press Chge, then key in the number from which
you wish the new count to start, followed by ENTER.
Press Next to go to the second syringe (if fitted) or
to the valve.
Press Chge, then key in the number from which the
new count is to start, followed by ENTER. Do this
for each counter that you want to change; followed
by ESC to return to the Configuration Screen.
Other Items
Press the Etc soft-key; the Beeper Screen appears.
This is to set an alarm when an error occurs, and to
warn that liquid is going to be dispensed to waste.
To switch between ON and OFF, press the Chge
soft-key, then press ENTER to confirm.
Press Next to go to the Autorefill Screen. When you set
Autorefill to ON, the left-hand syringe re-aspirates
diluent automatically for the next cycle, while you
are (for example) aspirating air via the probe. This
feature enables you to work faster with the 402.
To switch between ON and OFF, press the Chge
soft-key, then press ENTER to confirm. Press Prev
to go to the Beeper Screen. Press the ESC key to
return to the Configuration Screen.
Creating a Method (EDIT)
You use the keypad to enter the Method as a file
(one or more tasks used sequentially).
Key in the file number for your Method, then press
ENTER; press Edit. Now, one of two situations can
arise:
(i) if you have not entered a syringe correction factor
in the configuration process, the Task Selection
Screen appears, after which you press a soft-key
Software
Syringe Counter Screen
Beeper Screen
Autorefill Screen
Task Selection Screen