Labconco PuriCare Vertical Flow Stations 3830020 - Manual (Page 41)

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Chapter 6: Maintaining Your PuriCare
5. Locate the four locking bolts that secure the upper
plenum. They are located in each corner of the
plenum, and they thread through the upper bracket
and down onto the top of the plenum. Loosen each
bolt as far as it will go.
6. Locate the four plenum lift bolts that raise the upper
plenum. They are located in corner of the plenum
next to the locking bolts, and they thread into the
top of the plenum. Tighten each bolt until the top of
the plenum contacts the lift brackets.
7. Slide the Supply HEPA filter straight out of the
station.
8. Disconnect the wiring for the impeller to be
replaced.
9. Remove the four ¼ inch bolts and nuts that secure
the impeller bracket to the plenum. Remove the
impeller/bracket assembly.
10. Remove the impeller from the bracket by removing
the four 5 mm screws that secure the impeller to the
bracket.
11. Install the new impeller by reversing the
disassembly steps.
To replace the Lower Motor/Blower:
1. Unplug the station.
2. Remove the lower rear panel.
3. Using a screwdriver, disconnect the motor ground
wire from the blower housing.
4. Disconnect the motor leads from the wiring harness
by pulling apart each of the 4 connectors.
5. Using a 1/2-inch wrench, remove the two upper and
one lower blower mounting bolts, as shown in
Figure 6-7.
The motor/blower assembly is heavy.
Handle with care.
6. While supporting the blower assembly, pull the
assembly straight out the plenum.
7. To replace the motor/blower assembly, reverse the
above procedure. Before installing the lower rear
panel, ensure that the motors rotate in the correct
direction when turned on.
!