Fresenius Medical Care 2008K Troubleshooting Manual page 218

UF- 2.0.0 CHECK UF PUMP OUTPUT CONSISTENCY
a) Enter Service Mode
b) Attach the Fluid Sample connector to a burette accurately prefilled with 1 ml
c) Follow the screen's instructions through step #4. The [Target] data box defaults to 24 strokes. Press the
blinking 'Prime' key to start UF pump stroking.
d) When the pump stops, is burette volume = 25 ml +/- 0.1 ml (1 ml +/- 0.042 ml per pump stroke)?
Yes Perform Alarms and Pressure Holding Tests per Preventative Maintenance Procedures. Be
sure to perform the UF Pump Integrity Test.
No Reconnect the Fluid Sample Connector then see procedure number
UF- 3.0.0 CHECK UF PUMP (#22) MECHANICS (1)
a) Referring to the Figure right ASSURE (three checks):
1. The output (colored) nozzle is on top (prevents
air locks).
2. The output (colored) nozzle is mated to the
mounting plate's 'output' ( ) arrow.
3. The output tubing is plumbed to check valve
#63 (red body, yellow insert).
b) Clamp the tubing between UF filter #74 and chamber #69 and check the internal filter segment. If a
restriction is located this is the problem!
c) Reattach the tubing and REMOVE the clamp! CAUTION! ASSURE the filter housing does not leak!
d) If all above checks were okay, see procedure number
UF- 3.0.1 'HEAVY SPRING' COMPRESSIONS (NO UF OUTPUT)
Referring to Figure 87 (page 216), how to proceed depends on if the machine is equipped with the old
style or new style UF pump:
Old Style: The 'heavy' spring can be seen from the top of the pump. See procedure number
UF- 3.0.2 (page 217).
New Style: The 'heavy' spring is encased and cannot be seen. See procedure number
(page 217).
Calibrate Hydraulics
Figure 87 – UF Pump's Heavy Spring
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 14 – Ultrafiltration (UF) Pump Problems
UF Pump Volume
UF- 3.0.1 (page 216).
UF- 3.0.0 (page 216).
UF- 3.0.3.
Page 216