Flow Does Not Stop; Isolate Valve #65 - Fresenius Medical Care 2008T Troubleshooting Manual

F- 16.2.0 FLOW DOES NOT STOP
Reattach the Deaeration Pump's input
a)
tubing!
b) FIGURE right, return the Deaeration Pump's connector
to position "P20, Degas-P".
ENSURE the Deaeration Motor is running!
c)
d) Can you adjust Valve #65's nut (Figure right)
clockwise (tighter) until PEAK Loading Pressure
is between 23 and 25 psi?
Yes Between 23 and 25 psi! See procedure
number F- 16.2.1
No Pressure remains below 23 psi! See parts
a AND b below:
a) ENSURE more than 130 ml per minute
to the Deaeration pump (i.e. no
reoccurring air lock)!
b) If SURE of no air lock, swap the
following components (see
Component List below) one at a time
attempting to adjust Loading
Pressure in between to test each
new component.
COMPONENT LIST (4 components): 1) Deaeration Pump head; 2) Deaeration Motor;
3) Valve #65; 4) Hydrochamber. NOTE: After good loading pressure achieved see
procedure number
F- 16.2.1 ISOLATE VALVE #65
a) Figure right, several threads should be visible under Valve #65's
nut! If threads are visible see part b. If not either the wrong spring is
installed under Valve #65's nut* OR Valve #65 is bad!
* Refer to Figure 6
b) From the Home screen, press the [Dialysate Flow] window.
c) Set [Dialysate Flow] to 800 ml/min and press 'Enter'.
d) Call debug screen 6. WITHOUT LOOKING AWAY, watch BC Switch (middle column)
for three (3) FULL minutes. If EVER = 897, even just once, indicates a Flow problem.
Does it EVER = 897?
Yes BC Switch = 897 at least once! Return to (ABOVE) procedure number
No BC Switch is NEVER = 897! Check Deaeration Pressure per the Preventative Maintenance
Procedures booklet.
(page 136).
F- 16.2.1 (page 136).
(page 22))
2008T Troubleshooting Guide
P/N 490292 Rev. A
page 38
F- 2.0.0 ( ).
Page 136