Labconco Logic+ A2, Technical Manual

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Reinstallation Notes:
1. During reinstallation of the blower/motor assembly, angle the rear blower bracket
into the plenum opening. Make sure this rear blower bracket is INSIDE the
plenum opening. Once reinstalled, and the three blower mounting bolts are
installed and tightened, verify the rear blower bracket is positioned correctly by
trying to rotate/move the blower/motor assembly. If the entire assembly is rigid
(does not move in any direction), the rear blower bracket is properly secured.
Type A2 (12-inch sash) & C1 Exhaust Blower/Motor
Type A2 12-inch models and Type C1 models have two blower/motor assemblies. One
is the supply blower/motor, and one is the exhaust blower/motor assembly. This section
describes access/replacement of the exhaust blower/motor assembly.
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 biosafety cabinet 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.
1. Thoroughly and properly decontaminate the biosafety cabinet.
2. Remove the front dress panel as described earlier in this section under
Removal
of External Dress Panels . Unplug the power cord to this biosafety cabinet.
For A2 12-inch models
3. See the previous section Type A2 (12-inch) & C1 Supply Blower/Motor to remove
the blower/plenum cover. Proceed to Step 4
For C1 models
3. Remove all of the Phillips screws around the perimeter of the exhaust cover.
Gently break the gasket seal on the cover by starting in one corner. Use a flat
screwdriver if necessary, taking care not to damage the gasket or panel by prying
too hard in one area. Once the gasket seal is free, remove the exhaust cover.
See Figure 12-36.