2008T Troubleshooting Guide
P/N 490292 Rev. A
PHT- 1.5.0 INITIAL PHT CHECKS
a) Call the Home screen. With the Level Detector’s P
ven
port vacant,
(Figure right) Venous Pressure MUST = 0 mmHg!
b) With [Dialysate Flow] set to 500 ml/min or more:
• [Temperature] MUST be stable* between 35.0 and 39.0° C!
• [Conductivity] MUST be stable* between 13.0 and 14.3 mS!
* Stable = NOT changing more than 0.2 per minute
c) Using a flashlight, ENSURE no air bubbles MOVING towards the
machine through the acid and bicarb inlet tubing indicating a leaking
concentrate connector!
d) Install a ‘dummy venous chamber’ in the Level Detector module.
e) RESET ALL alarms!
f) If screen says “Standby For Test” OR the tests are running (screen says “Test:…”) allow the tests to
finish then, even if they pass, see procedure number PHT- 1.5.1 (page 519).
PHT- 1.5.1 INITIAL PHT CHECKS CONTINUED
From here forward, if a “No Water” or Flow Error alarm EVER
occur address them first!
a) Call debug screen 0. Valve #24’s ‘dot’ (Figure right) MUST be
BLUE BEFORE continuing to part b!
b) From the Home screen, set [Dialysate Flow] to 500 ml/min and
press ‘Enter’’.
c) Small external leaks cause BIG problems! Using a flashlight,
FOUR (4) checks. BE THROUGH!
Check #1: Figure right, the ENTIRE length of the
dialyzer lines ESPECIALLY the dialyzer
quick connectors!
Check #2: The hydraulic compartment! Puddles on
the compartment floor may indicate an
active leak!
Check #3: Figure right, from the DiaSafe
®
filter housing and tubing
connections!
Check #4: ENSURE the external flow indicator’s (sight tube) fittings are tight!
f) See procedure number PHT- 1.5.2 (page 520).
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