Eppendorf 3100 Digital Water Bath Shake - Manual (Page 32)

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5.6 Replacing the Motor Assembly
To replace the motor assembly:
1. Drain the water out of the bath.
2. Turn off the power and disconnect the power cord.
3. Lay the unit on its left side, using a soft pad to protect the finish.
4. Remove the bottom cover using a Phillips (+) screwdriver. Retain the screws for
reuse.
5. Referring to Figure 10 below, remove the connector from the motor by lifting
straight up.
Figure 10: Motor Assembly Replacement
6. Remove the #8-32 nut, lock washer and ground lug from the motor plate.
7. Remove the two hex head bolts and washers, then lift out the motor and plate
assembly.
8. Separate the motor from the plate by removing the three flat head screws. Save the
hardware.
9. Loosen the pulley set screw and remove the pulley from the shaft. Save the pulley.
10. Mount the new motor (part #M1195-4000) to the motor plate with the three flat
head screws (from step 8).