Fresenius Medical Care 2008K Troubleshooting Manual page 80

Proceed ONLY with the valve(s) as NOTED in the procedure that
A)
brought you here. THERE IS NO NEED TO CHECK ALL VALVES!
B) These procedures troubleshoot valves that are not opening. Four possibilities: 1) Bad valve solenoid
and/or its wiring harness; 2) Bad actuator board; 3) Bad actuator cable; 4) Bad distribution board.
C) See procedure number
TSV- 1.0.0 CHECK DISTRIBUTION BOARD CONNECTIONS
a) Referring to the Figure 34
CORRECT distribution board position AND aligned properly.
b) Referring to Figure 35 A
the NOTED valve(s) blue two-wire harness from the distribution board
and assure it (they) terminate at the correct valve.
c) ASSURE the wire harnesses are NOT pinched between the rear
hydraulic cabinet and the UF or bicarbonate pump. CAREFULLY
check the blue harness for damage (exposed or pinched wires, etc).
d) Referring to the Figure (right), check the (black) solenoid terminals for rust
or corrosion.
e) Unplug the NOTED valve(s) from the distribution board. Using a flashlight, check inside the vacant
position for 'white' corrosion or damaged male pins. There should be five pins.
f) Referring to the Figure (right), remove the cap from the female
distribution board connector. ASSURE good solder connections.
NOTE: All valves EXCEPT #26 should be wired between pins 1 and 5
(top and bottom). Valve #26 (ONLY) should be wired between pins 2
and 5 (second from the top and bottom).
g) Measure solenoid resistance, inside the female connector, between the
terminals, where the blue wires are soldered. Between 40 and 100
Yes See procedure number
No See procedure number
Page 78
TROUBLESHOOTING VALVES
TSV- 1.0.0 (page 78).
(page 78) assure the NOTED valve(s) connector are plugged into their
Figure 34 – Distribution Board
(page 79) and/or Figure 35 B
TSV- 3.0.0
TSV- 2.0.0
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
(page 79), trace
?
(page 80).
(page 79).