T- 1.0.3 Isolate Heater - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.0.3 ISOLATE HEATER

To avoid shock "Select Program" REMAINS up till instructed!
A)
B) Figure below, remove the distribution board cover.
C) Figure above, at the green eight-pin Heater Connector, THREE (3) checks:
CHECK #1: From RIGHT-TO-LEFT, the BOTTOM four (4) wires MUST BE brown, blue, green/yellow
OR black, white, green; the TOP three (3) wires MUST BE brown, blue, green/yellow!
CHECK #2: If (and ONLY if) signs of burning is seen indicate the wires may not have been securely
attached AND the distribution board needs to be replaced!
CHECK #3: Yank on all of the wires to ENSURE they are SECURELY attached. If not, this may be
the problem!
Set your CALIBRATED volt meter to resistance (Ω)!
D)
E) Touch the leads together. The meter MUST read less than 0.3
F) Figure above, measure BETWEEN the Heater Connector's
possible scenarios:
1) IF (and ONLY if) between 8.0 and 13.0
(page 218).
2) ALL OTHER scenarios (possibly about 20 Ω or "OL"): The heater* is bad! *To LOCATE the
heater refer to Figure 28 (page 129).
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Ω
!
BLUE
and
Ω
: The heater is good! See procedure number
BROWN
wires. TWO (2)
T- 1.0.4
Page 217