124 Agilent 4150 TapeStation System Manual
9
Maintenance
Maintenance Information
Maintenance Information
Needle Pierce Counter
Each time a ScreenTape lane is pierced for sample application during the
analysis the needle pierce counter is increased. The TapeStation Controller
software displays the number of pierces. The piercing needle should be
exchanged after 3840 pierces to ensure optimal instrument performance. The
TapeStation Controller software displays a warning message when this
threshold value is reached. Further analysis is inhibited if the maximum
number of 4480 pierces is reached.
The command Change Needle (see “Exchange the Piercing Needle” on page 127)
from the TapeStation Controller software leads to an exchange of the piercing
needle and a reset of the needle pierce counter.
An unused Needle Change Cartridge (5067-5783) is prerequisite for the needle
exchange and is recognized by the software. The Needle Change Cartridge is
designed for one time use. An extracted piercing needle cannot be remounted.
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