Fresenius Medical Care 2008K Troubleshooting Manual page 212

INDUCED- 1.0.0 CHECKING VALVE #28
Referring to the Figure (right), unplug valve #28 from the
distribution board. Does the valve continue to leak?
Yes Replace valve #28 (leaking).
No Replace the actuator board (see
page 8).
Figure 4A,
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 12 – Induced Positive Pressure Test
Page 210