2008T Troubleshooting Guide
P/N 490292 Rev. A
F- 7.3.2 ISOLATE ‘SPENT SIDE’ FLOW PATHS
a) Valve connectors will be switched to test ‘spent side’ flow paths to
drain. A second bucket and the 1000 ml cylinder is required!
b) Figure right, at the rear of the machine, remove the tubing from the
Drain (BOTTOM!) nozzle. Flow from the nozzle will be measured.
Good flow is more than 800 ml per minute!
c) ENSURING “Select Program” REMAINS up, perform BOTH PARTS
3 and 4 EVEN IF PART 3 yields bad flow!
PART 3:
a) Place the second bucket behind the drain nozzle.
b) Plug valve #36 into valve #33’s distribution board position, “V33”.
c)
Watch drain flow (if any) for one (1) minute. If good initially but significantly slows down
indicates an intermittent bad valve #32 or #36. If no flow ENSURE valve #36’s
connector is placed properly in position “V33”. If okay see part d!
d) Measure flow, into the cylinder, for one (1) minute.
e) Return valves #36 AND #33 to their distribution board positions.
f) Record PART 3’s measurement, THEN perform PART 4!
PART 4: a) Refill the bucket that has the dialyzer connector in it! It MUST NEVER run empty!
b) Plug valve #38 into valve #31’s distribution board position, “V31”.
c) Watch drain flow (if any) for one (1) minute. If good initially but significantly slows down
indicates an intermittent bad valve #34 or #38. If no flow, ENSURE valve #38’s
connector is placed properly in position “V31”. If okay see part d.
d) Measure flow for one (1) minute.
e) Unplug valve #38 THEN analyze BOTH Part 3 AND Part 4’s measurements per Table
4 below:
Table 4 – Parts 3 AND 4
PART 3’s
measurement
PART 4’s
measurement
Your Response
Less than 800 ml Less than 800 ml See procedure number F- 7.4.0 (page 86)
Less than 800 ml More than 800 ml See procedure number F- 7.6.10 (page 92)
More than 800 ml Less than 800 ml See procedure number F- 7.7.20 (page 94)
More than 800 ml More than 800 ml See procedure number F- 7.8.0 (page 96)
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