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2008K
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Preventive Maintenance Procedures
P/N 508138 Rev. J
6. When the tests shown in Table 1 are complete, the machine conducts a
pressure holding test. When the test ends verify that the display screen
reports TEST COMPLETE, indicating that all the tests were passed
successfully. Press the [RESET] key.
7. Test the UF pump integrity as follows:
• Pull the hydraulics out and remove the output tube from the UF pump.
• Install a 24” tube (part number 545325-10) to the empty output port.
Route this tubing out the back of the machine so that it will not be
kinked or pinched when the hydraulics is closed. Close the hydraulics
and place the other end of tube into a collection container.
• Conduct steps 1-6 again.
- If the pressure holding test fails, refer to Section 4.1.
- If the pressure holding test passes, disconnect the 24” tube and
reconnect the original output tube to the UF pump.
8. Test the audible alarm as follows:
• Place a piece of opaque paper inside the housing of the optical detector
to simulate a line containing blood. Close the door of the optical
detector.
• Open the shunt door. Verify that the machine responds with an
audible alarm. Press the [Mute] key and verify that the Mute lamp
lights, and the audible tone stops.
2.9 VERIFY pH
1. Place the machine into dialysis mode and allow it 10 minutes to stabilize.
2. Use a pH test strip (part number 335130-01 or equivalent) to verify the
dialysate fluid is between the ANSI/AAMI RD52 standard of 6.9 and 7.6.
3. Record the measured value on the Six (6) Month Preventive Maintenance
Checklist.
2.10 POWER FAILURE ALARM
Test the Power Failure alarm by turning the main power switch off on the back of the
power supply with the machine powered on. Verify that the audible alarm sounds. If
no audible alarm occurs, check/replace the 9-Volt battery.
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