2008T Troubleshooting Guide
P/N 490292 Rev. A
CO- 10.0.41 PREPARE TO ANALYZE PRE AND POST CONDUCTIVITY STABILITY
a) Install a ‘dummy chamber’ in the Level Detector module and RESET ALL alarms!
b) Watch the screen for thirty (30) seconds. If a “Filling Program” banner EVER occurs, allow thirty (30)
seconds before continuing!
NOTE! Multiple “Filling Programs” occurrences indicate a hydraulic air leak that
MUST be located and
repaired or else OLC tests cancel.
c) If screen says “Standby For Test” OR the screen says “Test:…” allow the tests to finish THEN allow
three (3) minutes BEFORE continuing to procedure number CO- 10.0.42 (page 424).
CO- 10.0.42 ISOLATE FLOW PUMP DIGITAL CONTROL (FLWP)
a) Call debug screen 1. Press the keyboard’s “1” keypad for five (5) seconds.
b) Allow forty-five (45) seconds BEFORE continuing to part c.
c) Call debug screen 0. Without resetting alarms, ENSURING Flow Error
REMAINS = 0 ALSO watch FLWP for two (2) minutes. TWO (2)
possible scenarios:
1) IF (and ONLY if) FLWP continually changes more than
+/- 2 (two): Proceed to
page 52, procedure number F- 3.8.0.
2) IF FLWP does NOT change more than +/- 2 (two): Reset ALL
alarms THEN see procedure number CO- 10.0.43 (page 424).
CO- 10.0.43 PRE CONDUCTIVITY STABILITY
a) Call debug screen 5. Pre Dev val (right column) is the conductivity difference
between now and one (1) minute ago from Conductivity Cell #7. If no alarms
it changes continually!
b) After no more than two (2) minutes, if not already, Pre Dev val should fall to less than 135. TWO (2)
possible scenarios:
1) IF (and ONLY if) Pre Dev val is OR falls to less than 135: See procedure number
CO- 10.0.44 (page 425).
2) IF Pre Dev val NEVER falls below 135: Pre Cond is unstable! ENSURING no alarms occurred
see parts a AND b below:
a) Per the Figure next page, using a flashlight and WITHOUT LOOKING AWAY, for one (1)
minute, if air bubbles are flowing through Pre Dialyzer Cond Cell #7’s tubing locate and repair
the air leak!
b) If (and ONLY if) absolutely sure of no air, proceed to
page 429, procedure number
CO- 10.0.60.
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