Labconco Type C1 Biosafety Cabinet Models 30468 - Manual (Page 103)

Product Service 1-800-522-7658 103
To Install a Supply HEPA Filter:
1. Install a new supply HEPA filter by pushing it straight into the cabinet,
ensuring that it is correctly oriented, and that the filter is centered on the
filter shelf.
2. Use the 1/2-inch sockets or wrenches to sequentially loosen the three
plenum lift bolts located as noted in Figure 6-12. When properly positioned,
the plenum box will be aligned with the supply HEPA filter frame. Continue to
loosen the bolts until the plenum contacts the HEPA filter and has slightly
compressed the filter gasket.
NOTE: The lift bolts should only be tightened enough to ensure a proper seal
of the supply HEPA filter. At maximum tightness, the supply filter's gasket
should be compressed to less than 50% of its original thickness. NEVER
tighten the locking bolts beyond this setting.
Supply Motor/Blower Replacement
Caution: The cabinet must be properly decontaminated before servicing the
motor/blower.
The cabinet blower motor's bearings are sealed and require no lubrication.
DO NOT attempt to lubricate them.
To replace the Motor/Blower:
1. Unplug the cabinet.
2. Remove the front dress panel as shown in Figure 6-1.
3. Loosen all of the Phillips screws on the blower chamber cover. Remove all of the
screws except two screws on the top center of the panel. This will support the
panel.
4. Remove the last two screws. Gently rock the cover, slide it to the left or right,
and swing it out and away from the unit.
NOTE: During disassembly, the blower plenum cover can rest on the central sash
support, as shown in Figure 6-11, to allow for repositioning of the panel or your grip on
it.
5. Disconnect both motor connectors from the motor. The 5-pin power connector,
located closest to the blower, is released by pressing the locking ears on either
side of the connector. The 16-pin data connector, located furthest from the
blower, is released by pressing the single locking ear located on the inside center
surface of the connector body. The connectors are shown in Figure 6-13.