Chapter 2: Analyzer Description ABL77 Service Manual
Lower Module
Introduction
This section provides a description of the lower module of the ABL77 analyzer.
The lower module contains the following components and related mechanisms.
Components
• The Valve Board routes all fluids through a system of three 3-way valves. The
valve board contains the sensor cassette connector and connections to the analog
board, door sensor, roller pump and waste pump motor.
• The Printer allows printing of sample test and QC reports, using a roll of
thermal paper.
• The Roller Pump draws calibration solutions and other fluids into and out of the
sensor cassette in carefully controlled step increments for accurate placement of
fluids.
• The Waste Pump transports waste fluids from the waste drain to the waste
pouch in the cal pack.
• The Sensor Cassette Nest provides a cavity to accommodate the sensor cassette.
This nest contains the electrical and fluid connections for the sensor cassette,
allowing the analyzer to receive data from the sensor cassette and to move fluids
through the sensor cassette.
• The Manifold is the connection point between the valve board and the cal pack
and provides a fluid pathway. The manifold is considered a separate part from
the lower module but is identified here to show the proper tubing connections.
Continued on next page
2-30 Rev. F
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