T- 1.5.3 Screen [Temperature] Is Unstable - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.5.3 SCREEN [TEMPERATURE] IS UNSTABLE

a) Figure right, insert the 80° C (1.255 KΩ)
plug, from the FOUR- RESISTOR SET,
nd
2
into the distribution board position
from the LEFT, "MON-NTC".
b) If the plug is placed properly the
screen's [Temperature] window
should read more than 75° C!
c) To prevent damage DO NOT leave the machine. The external meter MUST NEVER reach 95° or more!
d) Once again, watch the screen's [Temperature] for one (1) minute noting its highest and lowest values.
e) Subtract the lowest value seen from the highest. TWO (2) possible scenarios 1) or 2) below:
1) IF (and ONLY if) the result is more than one (1) i.e. unstable:
page 254
, procedure number
2) IF the result is zero (0) or one (1) i.e. STABLE:
A) ENSURING the flow indicator's 'bob' is moving up and down, watch the external meter for one
(1) minute noting its highest and lowest values.
B) Determine stability by subtracting the lowest value seen from the highest. Is the result more than
two (2.0)?
Yes More than two (2.0)! For future use, NOTE METER STABILITY is more than two (2.0)
THEN see procedure number
No Less than two (2.0)! For future use, NOTE METER STABILITY is less than two (2.0)
THEN see procedure number
T- 1.5.52.
T- 1.5.3.10
T- 1.5.3.10
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Perform parts A and B below:
(page 249).
(page 249).
Proceed to
Page 248