2008T Troubleshooting Guide
P/N 490292 Rev. A
T- 1.3.0 TEMPERATURE EXCEEDS 38.9°C
This procedure isolates between uncontrollable temperature, unstable monitoring or high incoming RO water
temperature.
a) From the Home screen, set [Dialysate Flow] to 800 ml/min and press ‘Enter’.
b) Allow [Temperature] to increase to more than 38.9° C!
c)
TURN THE HEATER SWITCH OFF TILL INSTRUCTED!
d) Watch [Temperature] for up to FIVE (5) minutes until it either, 1) Starts falling OR 2) NEVER starts
falling:
1) IF (and ONLY if) it starts falling: Allow it to fall
0.3° C BEFORE continuing to part e.
2) [Temperature] NEVER stops falling: See procedure number T- 1.3.11 (page 256).
e) NOTE [Temperature] THEN, WITHOUT LOOKING AWAY, watch it for up to FIVE (5) minutes for one
(1) of the following THREE (3) possible scenarios:
Scenario #1: IF it STEADILY falls, until less than 35.5° C i.e. NEVER, EVER increases:
Proceed to page 259, procedure number T- 1.3.40.
Scenario #2: IF it EVER INCREASES 0.2° C or more above what was noted in part e: See
procedure number T- 1.3.11 (page 256).
Scenario #3: IF AFTER five (5) minutes, REMAINS more than 35.5° C: See procedure number
T- 1.3.11 (page 256).
T- 1.3.11 ISOLATE INCOMING WATER TEMPERATURE
a) Using a calibrated temperature meter check the incoming water (RO) source.
b) Measured RO temperature less than 34.0º C?
Yes Less than 34.0º C! See procedure number T- 1.3.12 (page 256).
No More than 34.0º C! The temperature of the tap water feeding the RO is too high!
T- 1.3.12 RO TEMP LESS THAN 34.0º C
a) Figure right, unplug the connector from the 2
nd
distribution board position from the left, “MON-NTC”.
This is temperature monitor NTC #3.
b) Call debug screen 4. Is TEMP (lower left)
LESS THAN 0.3?
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