T- 3.0.6 Verify Temperature; T- 3.0.7 Never 80 Degrees C/Isolate Heater Voltage - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 3.0.6 VERIFY TEMPERATURE

a) "No Water" OR Flow Error alarms turn the heater off! If either occur from here forward address them
FIRST!!
b) Allow fifteen (15) FULL minutes OR until if the external meter reads 50° C or more. TWO (2) possible
scenarios below:
1) IF (and ONLY if) DOES NOT achieve 50° C or more: See procedure number
286).
2) IF 50° C or more: Allow up to fifteen (15) minutes longer. TWO (2) possible scenarios i) or ii) below:
i) IF (and ONLY if) the meter NEVER ACHIEVES 80° C OR does but then falls and
REMAINS less than 79° C for three (3) minutes: See procedure number
286).
ii) IF the meter STAYS at 80° C or more: Proceed to
T- 3.0.7 NEVER 80° C / ISOLATE HEATER VOLTAGE
a) Figure right, unplug the connector from the
distribution board position from the left ("CON-NTC").
This is temp control sensor's NTC #2's connector!
ENSURE the HEATER Switch is on!
b)
Set your volt meter to AC voltage (~
c)
V, V )!
AC
d) Figure right, measure at the distribution board's Heater
Connector between the BLUE and BROWN wires.
TWO (2) possible scenarios:
1) IF (and ONLY if) less than 20 volts AC:
ENSURING the Heater Switch was on prior to
checking voltage, leaving NTC #2 unplugged, see
(ABOVE) procedure number
263
).
2) IF more than 100 volts AC: Leaving NTC #2 unplugged, perform parts a AND b below:
To avoid damage DO NOT leave the machine. The external meter MUST
a)
NOT be allowed to get higher than 95° C!
b) Watch the external meter for up to fifteen (15) minutes OR until if it achieves more than 80° C?
st
1
page
T- 2.0.0 (
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 288
, procedure number
T- 3.0.7 (page
T- 3.0.7 (page
T- 3.0.9 .
Page 286