Fresenius Medical Care 2008K2 Troubleshooting Manual page 415

Figure below
c) , ENSURE the Air Sensor Connector's brown and blue wires terminate tightly into the
probes at the top Chamber #69, brown wire to the top probe; blue to the bottom!
NOTE: If the wires are loose OR not connected properly this may be the problem!
d) Very small external leaks cause BIG problems! Be THROUGH!
THREE (3) leak checks:
CHECK #1 Figure right, the ENTIRE length of the
dialyzer lines including the quick
connectors!
CHECK #2: Puddles on the hydraulic compartment floor likely
indicate a leak!
CHECK #3: Figure right, the DiaSafe
connections!
e) See procedure number
® housing and tubing
FIL- 1.0.1 (page 412).
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 411