Labconco Paramoun Ductless Enclosures 69636 Series, 6' Widths - Manual (Page 52)

Chapter 6: Maintaining the Ductless Enclosure
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Motorized Impeller Replacement
The motorized impeller (ECM) must be replaced as a complete unit; it has
over 50,000 hours of useful life as tested. See Appendix A for Replacement
Parts Diagram. See Figure 6-3 for a view of the motorized impeller plenum
assembly.
1.
Disconnect all power and consult the wiring diagram on the back of the
front panel and disconnect all the wires of the motorized impeller from
the quick disconnect connector. Be sure to connect wires on the new
motor in the same way the old motor was wired and not get the wires or
hoses tangled in the impeller.
2.
Remove four screws in the motorized impeller bracket that hold it down.
Remove the motorized impeller and bracket.
WARNING: High-speed blower. Never operate impeller with housing
off.
3.
Reassemble the new motorized impeller by reversing the assembly steps.
Figure 6-3
Motorized Impeller Replacement