Fresenius Medical Care 2008K Troubleshooting Manual page 104

T- 1.3.4 CHECK TEMPERATURE CONTROL
IMPORTANT!
a) Turn the HEATER switch on (rocker switch pushed into "1" or "ON".
ASSURING TPRE is 4000
b)
connector, between the: Old style heaters: BROWN and BLUE wires; New style heaters: BLACK
and WHITE wires.
c) Is the measurement greater than 90 volts AC?
Yes a) Connect to concentrate and return to Dialysis program (remember to press the 'CONFIRM'
key).
b) See procedure number
No If SURE the meter is set to measure AC voltage (
proceed according to the originally observed symptom:
Temperature exceeded (but does not remain) 41° C in Dialysis Program: Replace
NTC #3 (see
Exceeds (but did not remain) 91° C in Heat Disinfect Program: See procedure
number
"TEMP OVER 95 DEGREES" message occurred in Heat Disinfect Program: See
procedure number
T- 1.3.5 CHECK VALVE #39
This procedure checks if valve #39 is opening by checking deaeration pressure. IMPORTANT! Assure
the deaeration gauge reads 0 inHg before installing it!
IMPORTANT!
a) Remove the
distribution board and return NTC #2's connector to position
labeled "CON-NTC", 1
b) Pull the red connector from its rinse port to interrupt Rinse.
c) Referring to the Figure (right), tee the deaeration gauge into
the clear input tubing of deaeration pump #20.
d) Place the machine into Rinse program. Is pressure between
0 and -15 inHg?
Yes See procedure number
No Valve #39 is remaining closed! Proceed to page 73, procedure number
T- 1.3.6 VERIFY PROBLEM
a) Pull the red concentrate connector from its port to interrupt Rinse and remove the gauge.
b) Install all panels but do not screw them in.
c) Connect the dialyzer connectors to a calibrated Temperature
meter.
d) Open the shunt door open. Referring to the Figure (right),
reach into the opening, under the door, and push down and
hold ALL THREE switches.
e) Activate the screen's HEAT DISINFECT button. If all
switches are held Heat Disinfect Program starts.
, measure AC voltage
T- 4.0.0
Figure 42, page 94) then proceed to
T- 1.3.5 (page 102).
T- 1.3.5 (page 102).
o
80 C
resistor plug from the
st
connector from the left.
T- 1.3.6 (page 102).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
(~ V
), at the distribution board's heater
).
(page 114
~ V
), AND the HEATER switch is ON,
T- 7.0.0
Section 4 – Temperature Problems
(page 121).
CLEAN- 2.0.4.
Page 102