Fresenius Medical Care 2008K Troubleshooting Manual page 176

FIL- 4.0.0 TROUBLESHOOTING THE AIR SENSOR CIRCUIT
Leaving the resistor installed at distribution board position "AIR-SEN". Five possibilities: 1) Bad sensor
a
board ; 2) Bad sensor cable
a
Swap in a known good sensor board. Enter Service Mode
C (Test and Calibration) to "Yes". Press the 'CONFIRM' key (the "x" turns blue). From debug screen 1,
if FILACT = 0 the previous sensor board is bad.
b
The cable can be checked for continuity. NOTE that one (1) AIR SENSOR connection will be checked
and proceed to page 228,
c
Swap in a known good function board. Place this function board into T and C. From debug screen 1, if
FILACT = 0 the previous function board is bad.
FIL- 5.0.0 RE-CHECK LOADING PRESSURE/FLOW ERROR
Filling Programs can mask Flow Errors. This procedure assures that a Flow Error is not present when
FILACT = 0.
a) Re-check loading pressure. If (and ONLY if) it is NOT peaking to between: 23 and 27 psi (equipped
®
with DiaSafe filter); 17 and 23 psi (NOT equipped with DiaSafe
number F- 2.0.4.
b) Call debug screen 0 and CAREFULLY watch Flow Error for two minutes or until if Flow Error = 1.
Proceed accordingly:
Flow Error = 0 (constant): See procedure number
Flow Error = 1 (constant or intermittent): Proceed to page 14,
DIALYSIS PROGRAM
FIL- 5.1.0 FILLING PROGRAM CHECKS
If a low KUF dialyzer is used with a high UF Rate (UFR) frequent
intermittent Filling Programs may occur. In this event, using a larger
KUF dialyzer may solve the problem. Proceed through the following
steps to locate a possible air leak. NOTE: If an air leak is located in
any step this may be the problem!
a) ASSURE the dialyzer quick connectors are attached to the
dialyzer or shunt door properly.
b) Referring to the Figure (right) and using a flashlight, check
through the concentrate inlet tubing for air.
c) Referring to the Figure (below, right), open the shunt door and
check external dialysate line filter #73 (if present) for
restrictions.
d) Close the shunt door and IMPORTANT! allow 30
seconds.
e) From debug screen 1, assure FILACT remains = 0.
f) Clear all blood alarms and turn the blood pump on to
greater than 200 ml/min.
g) Set UF GOAL to 3000 ml/Hr. Set UF RATE to 700
ml/hr and press the 'CONFIRM' key.
b
; 3) Bad function board
SECTION 17 - CHECKING THE SENSOR BOARD
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 8 – Filling Program Problems
c
; 4) Bad distribution board; 5) Bad motherboard.
Options
®
filter) proceed to page 18, procedure
FIL- 5.1.0 (page 174).
SECTION 1- FLOW ERRORS IN
Hardware Options. Set T and
CABLE.
Page 174