Four Balancing Chamber Valves Remaining Blue, For Remaining White; Isolate Valves - Fresenius Medical Care 2008T Troubleshooting Manual

VE- 4.0.0 FOUR BALANCING CHAMBER VALVES REMAINING BLUE, FOUR REMAINING WHITE
NOTE! One of the valve circuits whose 'dots' are blue is the problem. These procedure isolate between
them:
a) From the Home screen, set [Dialysate Flow] to "OFF".
b) Press' Enter'!
c) Return to screen 0. If flow is off all eight (8) Balancing Chamber Valves remain white.
d) Call debug screen 1!
procedure number VE- 1.0.0
e) Watch VERR until if it increases above what you noted in part d OR for five (5) minutes whichever
comes first! TWO (2) possible scenarios:
1)
IF (and ONLY if) VERR increases above what was noted in part d: Leaving [Dialysate Flow]
"OFF", proceed to
2) IF VERR does NOT increases above what was noted in part d: This indicates a problem with a
Balancing Chamber Valve circuit. See procedure number
VE- 4.0.1 ISOLATE VALVES
a) From the Home screen, set [Dialysate Flow] to 300 ml/min.
b) Press 'Enter' THEN call debug screen 0.
c) Allow the Balancing Chamber Valve 'dots' to STOP cycling i.e. four (4) REMAINING blue! Four (4)
REMAINING white! This may take a while so be patient!
d) Per the Figures below, TWO (2) possible scenarios:
1)
IF (and ONLY if) V32, V33, V35 AND V38 are REMAINING blue: The problem is in Balancing
Chamber Valve Cycle 1! See procedure number
2) IF V31, V34, V36 AND V37 are REMAINING blue: The problem is in Balancing Chamber Valve
Cycle 2! Proceed to
NOTE
VERR's value for reference later. If VERR EVER reaches 255 return to
page 214
( ) to reset it.
page 223
, procedure number
page 221
, procedure number
2008T Troubleshooting Guide
P/N 490292 Rev. A
VE- 7.0.0.
VE- 4.0.1 (page 218).
VE- 5.0.0 (page 219).
VE- 6.0.0.
Page 218