Fresenius Medical Care 2008K2 Troubleshooting Manual page 541

e) Remove the blue dialyzer connector from the shunt door and drop it into the empty bucket.
f) Place the red dialyzer connector into the bucket of acid concentrate but
Rinse must NOT interrupt! The blue connector MUST be delivering flow into its bucket!
g) WITHOUT LOOKING AWAY, watch FPRE for up to three (3) minutes. Does it EVER, even if only once,
increase or fluctuate to MORE THAN four thousand (4000)?
Yes FPRE increases to more than 4000! A torn balancing chamber diaphragm is indicated.
Remove the clamp from valve #29 then replace BOTH balancing chamber diaphragms.
No FPRE remains ALWAYS about 2300! See parts a and b below:
a) A torn diaphragm is NOT indicated! Remove the clamp from valve #29 and return the
dialyzer lines to the shunt!
b) If referred to TESTING FOR A LEAKING BALANCING CHAMBER DIAPHRAGM, return to
the procedure that brought you here as NOTED!
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
DO NOT
close the shunt door!
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