Fresenius Medical Care 2008K Troubleshooting Manual page 138

CO- 2.0.3 ADJUST CONDUCTIVITY ALARM LIMITS
a) Press the front panel's 'Escape' key to call the Home screen.
b) Select the 'Dialysate' tab at the bottom of the screen to call the 'CONFIRM
Concentrate' screen.
c) Referring to the Figure (right), if 'actual' Conductivity is NOT remaining between
13.0 and 14.5 mS skip to procedure number
d) Using the screens 'Alarm Position' and/or 'Alarm Width' buttons are you able to
adjust the Alarm Limits until 'actual' Conductivity REMAINS between the upper
and lower alarm limits?
IMPORTANT!
Yes a)
b) From the Home screen, if the Conductivity window remains RED
see procedure number
and Conductivity windows are NOT red the Bypass LED (front
panel) should be off.
c) See procedure number CO- 2.0.5 (page 136).
No See procedure number
CO- 2.0.4 SET CONDUCTIVITY DISPLAY
a) Referring to the Figure (right), from the two-resistor OLC set,
place the 274 resistor plug, into distribution board position
th
labeled "COND" (6
'normal' Conductivity.
CRITICAL
b) ! ASSURE the
before continuing!
c) Call the Home screen. Is Conductivity between 13.0 and
14.5 mS?
Yes a) If necessary, adjust the Conductivity alarm limits (per procedure number
page 136) until 'actual' Conductivity is between the alarm limits then (IMPORTANT!)
press the "CONFIRM' key.
b) From the Home screen, if (and ONLY if) 'actual' Conductivity is remaining between the
alarm limits AND the Conductivity window remains RED three possibilities: 1) Bad
actuator board; 2) Bad function board; 3) Bad motherboard.
c) If the Temperature and Conductivity windows are NOT red the
Bypass LED (front panel) should be off.
d) See procedure number CO- 2.0.5 (page 136).
No See procedure number
CO- 2.0.5 CHECK 'OUT OF BYPASS' FLOW
NOTE: The following procedures require that the machine remains 'out of bypass' (i.e. Bypass LED
remains off). If Conductivity is extremely unstable it may cause bypass (Bypass LED on). If (and ONLY if)
Bypass occurs intermittently return to procedure number
IMPORTANT!
a) Set Dialysate flow to 500 ml/min (NOT "a500") and press the 'CONFIRM' key.
b) If flow rate was changed to 500 ml/min allow three minutes for stabilization!
c) Call debug screen 1. If NPHT is less than 600 press and hold the "1" numeric keypad until
NPHT is greater than 600. Ignore an "On Line PHT Failed" message if it occurs for now.
Press the 'CONFIRM' key.
CO- 2.0.4
CO- 2.0.4 (page 136).
position from the left). This simulates
274
plug is placed correctly
CO- 6.0.0 (page 145).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 5 – Conductivity/ On Line Clearance Problems
CO- 2.0.4 (page 136).
(page 136). If the Temperature
CO- 2.0.4 (page 136).
CO- 2.0.3,
Page 136