Forma Scientific, Inc.
7-14
9. Remove and save the two #6 nuts, washers and nylon spacers that secure the
blower motor. Discard the old blower motor. Save the #6 nuts, nylon spacers
and washers.
10. Remove the snap ring from the new blower motor shaft.
11. Install the new blower motor using the #6 nuts, nylon spacers and washers
from step #9.
12. Reconnect the wires to the blower motor.
13. Install the snap bushing (located around the electrical wires from the blower
motor) in the top of the blower shield plate.
14. Reinstall the new snap ring on the motor shaft groove.
15. Reinstall the lower blower wheel (inside the chamber) by pushing the
blower wheel up against the snap ring.
16. Reinstall the upper blower wheel/blower blade.
17. Place the blower motor assembly into its original position.
Make sure that the vinyl tubing is not kinked and the wiring is not in
contact with the top blower wheel.
b. Replacing the Blower Motor on the bottom Incubator of stacked units
1. Disconnect the incubator from the power source.
2. Remove the shelves, duct sheets and blower channel from the incubator
interior.
3. Remove and save the bottom blower wheel (located inside the chamber) by
firmly pulling it down. Remove the snap ring (if present) from the motor
shaft groove using needle-nose pliers.
4. Remove the four wing nuts that secure the blower mounting plate to the
incubator ceiling.
5. Disconnect the door heater plug on the top unit.
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