Fresenius Medical Care 2008K Troubleshooting Manual page 242

BC LEAK- 3.0.0 DIAPHRAM LEAK TEST PREPARATION
NOTE: Two buckets are required, one empty and the other filled with one gallon of pure acid concentrate.
Read the procedures before continuing:
a) Place the machine into Rinse program. If the external flow indicator is NOT 'bobbing' up and down
these tests are invalid!
b) Call debug screen 5 and allow eight minutes or until FPRE and Pre Offset are
within +/- 100 of each other (approximately 2300). This verifies that all
conductive fluids have been rinsed out.
c) NOTE FPOS! Typically between 2000 and 4000.
d) Pull the red concentrate connector from its port to "Interrupt" Rinse then plug it back in and return to
Rinse.
e) Direct the UF sample connector tubing into the empty bucket to prevent pressure buildup.
IMPORTANT! Referring to
f)
clear tubing at valve #29's input nozzle. Ignore Flow Errors for now!
g) Open the shunt door and place the blue dialyzer quick connectors into the empty bucket.
h) Place the red dialyzer connector into a bucket of pure acid concentrate and assure it remains submersed.
IMPORTANT!
i) Do NOT shut the shunt door! The Rinse program must NOT interrupt!
j) CAREFULLY watch FPOS for 45 seconds. Does it increase (or fluctuate) to greater than 6000 (usually
much greater)?
Yes See BC LEAK- 3.2.0
No See procedure number
BC LEAK- 3.2.0 PERFORM DIAPHRAGM LEAK TEST
Watch FPRE for three minutes. Does it increase (or fluctuate) to greater than 3000 at any time?
Yes A torn balancing chamber diaphragm IS indicated. Remove the clamp from valve #29 then
replace both balancing chamber diaphragms.
No A torn balancing chamber is NOT indicated. See
Section 19 – Testing For A Leaking Balancing Chamber Diaphragm
Figure 319 – Valve #29 Location
Figure 319
(page 240).
BC LEAK- 1.1.0 (page 238) to check the flow pump.
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
(page 240), TIGHTLY clamp the
BC LEAK- 4.0.0 (page 241).
Page 240