Internal Dialysate Circuit Leak Checks Diagram; External Dialysate Circuit Leak Tests Diagram; Section 12 - Induced Positive Pressure Tests - Fresenius Medical Care 2008T Troubleshooting Manual

SECTION 12 – INDUCED POSITIVE PRESSURE TESTS
During these procedures hydraulic systems are checked for external leaks. USE A FLASHLIGHT! BE
THOROUGH! FEEL AROUND! Small leaks may take several minutes to become obvious and can cause
BIG problems!
Place the machine into RINSE!
1.
2. Figure below check for leaks at: 1) Top and bottom of Air Removal Chamber #69; 2) Filter #74; 3) UF
Pump #22. If no leaks continue to step #3.
Figure 80 – Internal Dialysate Circuit Leak Checks
3. Figure below, check for leaks at: 1) Valve #78; 2) Dialyzer Quick Connectors and O-rings; 3) External
Flow Indicator #75; 4) Dialysate Line Filter #73; 5) (Optional) Fluid Sample Port; 6) Dialysate line
connections at the rear of the machine. If no leaks continue to step #4 (next page).
Figure 81 – External Dialysate Circuit Leak Tests
This creates positive pressure in the secondary circuit!
2008T Troubleshooting Guide
P/N 490292 Rev. A
Page 541