F- 3.8.1 Troubleshooting Intermittent Flow Errors - Fresenius Medical Care 2008K2 Troubleshooting Manual

F- 3.8.1 TROUBLESHOOTING INTERMITTENT FLOW ERRORS

The following step-by-step procedures may locate an extremely intermittent Flow Error:
1)
Figure right, check the (blue) CFS transducer #10
AND Dialysate Pressure #9 transducers for signs of a
small external leak. If leakage is located replace the
transducer.
2)
To ensure the Deaeration Motor is not
intermittently stopping, glance at Loading Pressure
(Rinse port gauge) from time to time to ENSURE it
ALWAYS PEAKS to between 23 and 27 psi!
3)
®
If the DiaSafe filter is LESS THAN 60 days old
continue to step #4. If more than 60 days old:
A) Replace the filter; B) Return to Dialysis Program; C) Set [Dialysate Flow] to 800 ml/min and press
'CONFIRM'; D) Allow eight (8) minutes; D) Call debug screen 0; E) Watching Flow Error for up to ten
(10) minutes, if it EVER = 1 continue to step # 4.
4) Open the shunt door till instructed otherwise!
5)
Call debug screen 0. Watching for up to ten (10) minutes, if Flow Error EVER = 1 continue to step #6.
6)
Call debug screen 1. If VERR EVER = 1 or more indicates an intermittent Valve Error. In this event
ONLY see procedure number
7)
Call debug screen 0. If drain flow and incoming water pressure is good almost every
time the Balancing Chamber valve 'dots' cycle, Valve #41's 'dot' turns blue for about
one (1) second then white again. Continue to step #8.
8)
Call debug screen 4. ENSURE PDIA (left column) is between 2.0 and 8.0 AND is NOT changing more
than 0.3 per minute which may indicate a bad DiaSafe
9)
Performing parts a through e below, may locate an intermittent bad CFS transducer:
a)
Turn Dialysate Flow OFF (Flow on/off lamp blinks).
b)
Call debug screen 0.
c)
Figure right, ACFS should increase to between 4.0 and 6.0 very
quickly, within 0.5 seconds. If it EVER increases slower than this OR
remains less than 4.0 OR goes to more than 5.9 CFS transducer #10*
is intermittent bad.
* To LOCATE the CFS refer to
d)
Turn Dialysate Flow ON (Flow on/off lamp NOT blinking).
e)
Repeat parts a through d at least eight (8) times. If ACFS goes to between 4.0 and 5.9, within 0.5
seconds, EVERY SINGLE TIME, continue to step #10 (next page).
page 30
F- 2.0.0 ( ). If VERR = 0 continue to step #7.
Figure 6
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
®
filter OR leaking balancing chamber valve.
(page 19)
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