Fresenius Medical Care 2008K Troubleshooting Manual page 64

MOTORS- 4.0.0 CHECK DISTRIBUTION BOARD CONNECTION
Referring the Figure (right) and
wires from the distribution board to the NOTED motor inside the
hydraulics. Is the motor connected properly?
Yes See procedure number
62).
No a) Plug the motor in properly and assure that it runs
counterclockwise.
b) Place the machine into Rinse program for three minutes to eliminate a possible air lock.
MOTORS- 4.0.1 DISTRIBUTION BOARD / MOTOR RESISTANCE ( ) CHECKS
a) 'Wiggle' the NOTED motor's female distribution board connector. If the motor starts there may be a bad
connection inside the connector or distribution board.
b) Tap the NOTED motor hard with a screwdriver handle. If it starts the brushes may be bad.
c) Being CAREFUL to NOTE the position unplug the NOTED motor from the distribution board.
d) Using a flashlight, check inside the vacant position for 'white' corrosion or damaged male pins that may
cause false signals. There should be five pins.
e) Referring to the Figure (right), remove the cap from the female
distribution connector: Verify good solder connections at BOTH*
terminals.
* NOTE: The Deaeration Motor should be wired between pins 1
and 3; Flow Motor, pins 1 and 5.
f) Touch the meter leads together and subtract the meter's value
from the subsequent resistance ( ) reading!
g) Measure resistance, inside the female connector, between the two
terminals where the wires are soldered. Is the meter's numeric AND units
display indicating between 1 and 10
much greater than 10 !
Yes See procedure number
No Bad brushes or motor. After replacement, place the machine into Rinse program for three
minutes to eliminate a possible air lock
MOTORS- 4.0.2 CHECK MOTOR VOLTAGE
a) CAREFULLY return the connector, without the cap, to its CORRECT distribution board position.
IMPORTANT! Assure the connector is aligned correctly!
b) From the Home screen, assure Dialysate flow is set to 800 ml/min (NOT "a800").
c) Measure DC voltage, by placing the meter leads between the terminals where the wires are soldered.
IMPORTANT! The meter leads MUST make good contact with BOTH terminals! An error here may
cause unnecessary and time consuming work!
d) Per Table 4 (page 63), perform the given Response based on measured voltage.
Figure 316 (page 60), trace the
MOTORS- 4.0.1 (page
? NOTE: A reading of "OL" = very
MOTORS- 4.0.2
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
(page 62).
Troubleshooting Motors
Page 62