Motors- 5.0.0 Isolate Intermittent Motor; Motors- 5.0.2 Motor Rotates Freely - Fresenius Medical Care 2008K2 Troubleshooting Manual

MOTORS- 5.0.0 ISOLATE INTERMITTENT MOTOR

IMPORTANT!
a) Turn the machine OFF!
b) Figure right, remove the pump head from the motor to
expose the 'Drive Magnet'.
c) Manually spin the 'Drive Magnet'. Does it rotate freely i.e. is
NOT 'binding' (Yes or No)?
Yes Rotates freely!
No Does NOT rotate freely! The motor is bad* and brushes won't help.
NOTE:
* The binding motor may have destroyed the Actuator-Test and/or Power Logic Board

MOTORS- 5.0.2 MOTOR ROTATES FREELY

a) ENSURE rotating the drive magnet causes the motor shaft to rotate.
b) If the shaft rotates a problem is not indicated at this time HOWEVER, the motor may be stalling
intermittently. Replace the brushes but if the motor stops again in the near future, THREE (3) possible
bad components below:
COMPONENT LIST:
1) Bad Motor OR; 2) Bad pump head OR; 3) Bad Actuator-Test Board*. Swap in each one at a time
with known good and test for a stalling motor in between.
* To LOCATE the board refer to
See procedure number MOTORS- 5.0.2
Figure 4A
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
ge 138).
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(page 9)
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