Motors- 3.1.0 Isolate A Potential 'Binding' Motor - Fresenius Medical Care 2008K2 Troubleshooting Manual

MOTORS- 3.1.0 ISOLATE A POTENTIAL 'BINDING' MOTOR

a) Return the lines to the shunt!
IMPORTANT!
b) To prevent damage turn the machine OFF!
c) Figure right, remove the pump head from the NOTED motor to
expose the 'Drive Magnet'.
d) Manually spin the 'Drive Magnet'! Does it rotate freely i.e. is NOT
binding?
Yes 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 but the motor may be stalling
intermittently. Consider replacing the brushes!
No DOES NOT rotate freely! The motor is bad* and brushes WON'T help.
* The binding motor may have destroyed the Actuator-Test and/or the Power Logic Board
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 132