9. Disinfection
Table 9-2. Conductivity Thresholds
Citric Acid
Concentration (g/L)
Expected
Conductivity
(mS/cm)
Detection
Threshold (mS/cm)
2.0 0.9 0.6
3.0 1.2 0.9
4.0 1.4 1.1
5.0 1.6 1.3
6.0 1.8 1.5
9.3.4.2 Automatic Infusion
The date of the last completed Heat Clean and the last completed
automated chemical disinfection is displayed in the Last
Disinfection Data Report when the RINSE MENU button is
touched.
Preconditions
• The patient is disconnected from the dialyzer and blood
lines.
• The dialyzer connectors are connected to the rinse block.
Procedure
1. Make sure there is citric acid in the citric acid container on the
back of the Instrument.
2. Touch RINSE MENU.
3. Touch HEAT CLEAN MENU, CITRIC ACID HEAT CLEAN,
then VERIFY.
4. Allow Citric Acid Heat Clean and Cool Down to complete.
5. After the Instrument returns to the Rinse Mode, allow it to
rinse for 15 minutes.
6. Obtain a sample of the rinse solution from the dialysate line
sample port and check for residual citric acid using a test
specific for citric acid.
a. If the residual citric acid content is within acceptable limits,
the machine can be prepared for dialysis.
b. If the machine is not within acceptable limits, continue to
rinse the machine until the level is acceptable.
9.3.4.3 Manual Infusion
Preconditions
157-1278-916, Rev A 9-11
March 2004
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