T- 1.5.5 Screen [Temperature] = 95 Degrees C - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.5.5 SCREEN [TEMPERATURE] = 95° C
A) Turn the machine OFF!
B) Figure right, insert the 80° C
(1.255 KΩ) plug, from the FOUR-
RESISTOR SET, into the
distribution board position from the
LEFT, "MON-NTC". This simulates
approximately 80° C.
C) Return to HEAT DISINFECT with an external temperature
meter attached as described previously!
D) IMMEDIATELY call debug screen 10. If debug does not appear press 'Esc' then call screen 10.
E) Watch 5V HI AND 24V HI for three (3) minutes OR until if 5V HI = 5.3 or more and / or 24V HI = 28.0 or
more?
Yes 5V HI exceeds 5.3 and / or 24V HI exceeds 28.0! Proceed to
T- 1.5.51.
No 5V [HI] remains less than 5.3 AND 24V HI remains less than 28.0! Continue to parts F through H.
F) To prevent damage DO NOT leave the machine! The external meter MUST NEVER exceed 95° C!
G) Press 'Esc' to call the main Heat Disinfect screen.
H) Watch the screen's [Temperature] window for one (1) minute. THREE (3) possible scenarios:
1)
IF (and ONLY if) screen [Temperature] is between 77 and 83° C AND stable i.e. does NOT
change more than 1.0: Leaving the resistor plug installed, proceed to
number T- 1.5.53.
2) IF (and ONLY if) screen [Temperature] is unstable i.e. changes more than 1.0: Leaving the
resistor plug installed, proceed to
3)
IF screen [Temperature] is stable i.e. DOES NOT change more than 1.0 but IS NOT between
77 and 83° C: As prompted perform parts A THROUGH L below:
A) ENSURE the 80° C (1.255 KΩ) plug, from the FOUR-RESISTOR SET, was placed properly at
nd
2
the distribution board position from the left, "MON-NTC"! If not, repeat procedure number
T- 1.5.5 (page 251).
B) Consider using the 80° C (1.255 KΩ) plug, from another FOUR-RESISTOR SET. If screen
[Temperature] is still NOT between 77 and 83° C continue to part C.
C) Remove the resistor plug and return NTC #3's connector to the
from the left, "MON-NTC".
D) BEFORE continuing to part E (next page), place the machine into RINSE for fifteen (15) minutes
to cool it down rapidly.
nd
2
page 254
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 253
, procedure number T- 1.5.52.
2
, procedure number
page 255
, procedure
nd
distribution board position
Page 251