Fresenius Medical Care 2008K Troubleshooting Manual page 209

AIR- 1.0.7 CHECK VALVE #39 / HYDROBLOCK OR HYDRO CHAMBER
a) Referring to Figure 78
hydro block / hydro chamber is tight (two screws). If the bracket is loose this is the problem!
b) Refer to Appendix A
Procedures. If necessary, calibrate LOADING and DEAERATION PRESSURE. If (and ONLY if) the
calibration is unsuccessful, see
c) Proceed according to how the machine is equipped (Old Style Hydro Block or New Style Hydro
Chamber (see Figure
Old Style Hydro Block: See procedure number
New Style Hydro Chamber: See procedure number
AIR- 1.0.8 CHECK HYDRO BLOCK
a) Turn the machine off and clamp the vent tubing (see
b) Referring Figure 84
579070). These o-rings affect pressures and should be replaced during Annual Preventative
Maintenance.
c) Reinstall the restrictor and tighten it until snug only. Never use an electric screwdriver! If it won't
tighten, the threads may be stripped and this probably requires replacing the hydro block.
d) See procedure number
AIR- 1.0.9 LEAK TEST HYDRO BLOCK/HYDRO CHAMBER
This procedure pressurizes the Hydro Block/Hydro Chamber to locate a potential external water leak. A
clamp and the 274 resistor plug from the two-resistor OLC set, is required:
a) Referring to the Figure (right), at the top of the Hydro Block/Hydro
Chamber, tie wrap the segment of vent tubing that is attached to the
float.
b) Referring to the Figure (below, right), place the 274
two-resistor OLC set, into the float's distribution position labeled
rd
"FLOAT-SW" (3 connector, from the left). This simulates a closed
float switch and opens incoming water valve #41.
c) If the 274 plug is placed correctly vent tubing overflow occurs
within 30 seconds.
d) Clamp the vent tubing. This pressurizes the Block/Chamber to
approximately 20 psi (per incoming water regulator #61).
e) Watch the top and bottom of the Block/Chamber. Water leak
located?
Yes Proceed to page 214, procedure number
No a) Return the float connector to distribution board
position "FLOAT-SW" and unclamp the vent tubing.
b) Return to
(page 206), check that the bracket that mounts valve #39 to the bottom of the
(page 260), check Deaeration Pressure per Preventative Maintenance
SECTION 13 – DEAERATION PROBLEMS
2B, page 4):
(page 212), remove the restrictor fitting and check or replace BOTH o-rings (P/N
AIR- 1.0.9 (page 207).
AIR 1.0.1 (page 202).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 11 – Induced Air Leak Tests
(page 211).
AIR- 1.0.8 (page 207).
AIR- 1.0.9
Figure 6, page 13).
plug, from the
DAIR- 7.0.0.
(page 207).
Page 207