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Fresenius 2008
®
K Calibration Procedures
P/N 507296 Rev D
1.0 INTRODUCTION
Calibration involves doing two things. One is making mechanical adjustments,
both to the hydraulics and to the electronics. The other part of calibration is
storing data in the electronic memory in the machine. The machine uses an
EEPROM, which stores calibration data until it is purposely erased and replaced
with new data. To store new data in the EEPROM, the machine is operated in
Service mode as described in Section 1.2. Service mode also shows important
data that is needed to make some of the mechanical adjustments.
Perform the calibration procedures only when needed following repairs, or if the
machine fails the performance tests included in the Preventive Maintenance
Procedures. Do not re-calibrate the machine routinely to verify normal operation.
Instead, use the performance tests included in the Preventive Maintenance
procedures to ensure the machine is working properly.
If the machine behaves erratically during calibration, perform the Preventive
Maintenance procedures. Clogged filters, leaky O-rings and similar items
routinely corrected during Preventive Maintenance are a common cause of
intermittent problems. When preparing to re-calibrate the Blood Leak Detector,
either perform a bleach rinse first or verify that it has been done recently. The
bleach rinse is required to clean the detector tube.
Warning! Once a chemical rinse is performed, the only selection the machine
will allow is a mandatory rinse. This information is stored on the functional
board. Therefore, if the functional board and EEPROM are swapped out
together when troubleshooting a calibration or machine problem, the machine
must be rinsed prior to releasing it back into service.
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