Fresenius Medical Care 2008K Troubleshooting Manual page 140

1. = 17 mS: See procedure number
2. = 10 mS: See procedure number
3. = All others: See procedure number
CO- 3.1.0 CHECK CONDUCTIVITY = 17
a) IMPORTANT! Place the machine into Rinse program and allow seven full minutes.
b) Call debug screen 5. Does FPRE = Pre Offset +/- 400?
Yes See procedure number
No Conductivity cell #7 is bad (see
CO- 3.2.0 CHECK CONDUCTIVITY = 10
Call debug screen 5. Does FPRE = Pre Offset +/- 10?
Yes Conductivity cell #7 is bad (see
No See procedure number
CO- 3.3.0 CHECK CONDUCTIVITY
a) If necessary, adjust the Conductivity alarm limits (per procedure number
'actual' Conductivity is between the alarm limits.
IMPORTANT!
b) With the Bypass LED OFF and flow through the external flow indicator is the external
meter's 'actual' reading and the machine's Conductivity display within 0.1 mS of each other?
Yes If (and ONLY if) troubleshooting an OLC problem see procedure number
138). If NOT troubleshooting OLC see procedure number
No See procedure number
CO- 3.4.0 CHECK CONDUCTIVITY / TEMPERATURE STABILITY
a) 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. Allow one minute then
continue to part b.
b) Call debug screen 5. Watch CPRE for one minute noting the highest and lowest values. Proceed
accordingly (two scenarios):
CO- 3.1.0 (page 138).
CO- 3.2.0 (page 138).
CO- 3.3.0
CO- 6.0.0 (page 145).
Figure 57, page 138).
Figure 57, page 138).
CO- 6.0.0 (page 145).
Figure 57 – Hydraulics (Rear View)
CO- 6.0.0 (page 145).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 5 – Conductivity/ On Line Clearance Problems
(page 138).
.
CO-
CO- 3.5.0
2.0.3, page 136) until
CO- 3.4.0 (page
(page 139).
Page 138