Blower/Motor Replacement; Supply Blower/Motor Replacement - Labconco Logic Vue User Manual

Blower/Motor Replacement

The motors in the Logic Vue enclosure are ECM, brushless DC motors with extremely
high reliability. It is rare for the motor to fail. If the blower(s) fail to start, check all
possible causes first. The most likely cause for blower failure is a loose wire
connection. Another reason for accessing the blower/motor is a foreign object caught in
the blower wheel, or the blower wheel is out of balance.
The exhaust blower/motor assembly may be contaminated with biohazardous material.
Always assume the exhaust blower/motor is contaminated, even if you are told the
enclosure has not been used. For your safety, take all necessary precautions before
opening the exhaust blower/plenum cover, including: gaseous decontamination of the
enclosure, and/or proper breathing, eye, and skin protection from biohazards.
If replacing a blower/motor assembly, the motor must be programmed at Labconco.
The blower/motor assembly must also be balanced by Labconco, and therefore it is
strongly recommended to replace the blower/motor assembly, never the motor or
blower individually. Failure to replace the blower/motor with a genuine Labconco
assembly will result in failed or incorrect operation, which can jeopardize the protection
the enclosure provides the operator, product, and lab environment.
Blower/motors can be awkward to handle, and the blower wheel may contain sharp
edges. Use safe lifting techniques when removing and replacing the blower/motor.
Always wear gloves and eye protection when handling a blower/motor assembly.

Supply Blower/Motor Replacement

1. Disconnect electrical power from the enclosure. Remove the Upper Front Panel
as described earlier in this section under
Note: removing the Upper Rear Panel may provide additional clearance for this
operation.
2. Locate the two (2) Wire Harness connections on the right side of the motor.
Depress the latch on each connector and pull the connector out.
3. Remove the two (2) Bolts (see Figure 11-11), then lift the Blower/Motor Assembly
approximately 3 inches and bring it forward.
4. The Supply Blower contains a Connection Plate secured with Screws. Remove
these Screws using a 5/16" Wrench or Socket and Ratchet.
5. Replace the Connection Plate onto the new Supply Blower/Motor Assembly.
6. Replace all parts in reverse order, verifying the two (2) Wire Harness connections
are remade correctly to the motor.
Removal of External Dress
130
Panels.