8
838 Advanced Sample Processor
, Introduction
1.3.5 Peristaltic
pump
The peristaltic pump of the 838 Advanced Sample Processor can be
used as a single-channel or two-channel pump. One or two tubing car-
tridges 6.2755.000 may be fitted.
Figure 7 Peristaltic pump with 2 tubing cartridges
48
Tubing cartridge (6.2755.000)
For pump tubing (6.1826.0X0)
51
Snap-action lever
For detaching the tubing cartridge
49
Pressure lever
For regulating the contact pres-
sure
52
Pump drive
Roller head with contact rollers
50
Retaining bracket
53
Retaining cam
For engaging the tubing car-
tridges
1.3.6 Sensors of the Advanced Sample Processor
Figure 8 Magnet sensor for rack code
The magnet sensor for detecting the individ-
ual rack codes is mounted beneath the turn-
table of the Advanced Sample Processor.
The magnetic code of a rack can be read
only if the rack is in initial position, i.e. if the
magnet holder is precisely above the sensor.
For this reason, the Sample Processor
should be switched off and back on again
with each rack change.
Magnet sensor
Magnet holder
48
49
51
53
52
50
