Fresenius Medical Care 2008K2, Troubleshooting Manual

Page: 376 / 676

2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 372
CO- 8.7.0 ISOLATE BALANCING CHAMBER DIAPHRAGMS
a) BEFORE continuing to part b, NOTE this page and procedure number in case you need to return here
then proceed to
page 535
, SECTION 19 - TESTING FOR A LEAKING BALANCING CHAMBER
DIAPHRAGM .
b) If a leaking balancing chamber diaphragm was NOT located in part a return to Dialysis Program
(“Select Program” → ‘Dialysis’ → ‘CONFIRM’)!
c) See procedure number CO- 8.8.0 (page 372).
CO- 8.8.0 VERIFY VOLUMETRIC SYSTEM
A 100 ml graduated cylinder (preferably glass) is REQUIRED!
CAUTION!
Using a larger cylinder
results in gross error!! If a CALIBRATED scale is available use it (1 gram = 1 ml)!
a) WITHOUT turning flow off , remove the tubing from the ‘To Drain’
( BOTTOM* ) nozzle at the REAR OF THE MACHINE.
*
Do NOT measure from the drain tubing to prevent gross error!!
b) Allow ten (10) drain ‘pulses’ to
ENSURE stability!
c) ACCURATELY, collect two
consecutive drain ‘pulses’ into
the 100 ml cylinder.
d) Per the Figure right, read the
bottom of the meniscus curve.
e) Call debug screen 3.
f) BCV (upper right, B alancing C hamber V olume) was entered during the last calibration
and is the volume of both chambers ( example: 603 = 60.3 ml).
g) Does BCV AND the measured volume times (x) 10 match?
Yes BCV = measured volume! See procedure number CO- 8.9.0 (page 373).
No a) Read before performing! Perform BALANCING CHAMBER VOLUME CALIBRATION,
per the CALIBRATION PROCEDURES booklet but enter your above measured volume.
b) Return to Dialysis Program
(“Select Program” → ‘Dialysis’ → ‘CONFIRM)’!
c) Allow ten (10) minutes BEFORE continuing to part d.
d) Is the external meter’s conductivity /- 0.4 mS of TCD?
Yes Conductivity /- 0.4 mS of TCD! The balancing chamber was out of
calibration. Do NOT continue!
No Conductivity IS NOT /- 0.4 mS of TCD! See procedure number
CO- 8.9.0 (page 373).