Labconco 3970202 User Manual - Uv Light Replacement

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Chapter 6: Maintaining Your Filtered PCR Enclosure

UV Light Replacement 

1.  Disconnect the power. 

2.  Locate the UV lamp located inside the enclosure. 

3.  Rotate and remove the old UV lamp. 

4.  Reinstall the new UV lamp. 

5.  Power the unit up and try the new UV lamp. 

Motorized Impeller Replacement  

The motorized impeller must be replaced as a complete unit.  

When the motorized impeller is replaced, the capacitor should also 

be replaced.  See Appendix A for Replacement Parts Diagram. See 

Figure 6-3 for an isometric view of the motorized impeller plenum 

assembly.  The HEPA filter rests below the motorized impeller 

assembly. 

1.  Unplug the enclosure from the electrical outlet. 

2.  Remove HEPA filter per the HEPA filter removal procedure 

outlined earlier in this chapter. 

3.  Consult the wiring diagram in Appendix C of the manual and 

disconnect all the wires of the motorized impeller.  Be sure to 

connect wires on the new motor in the same way the old motor 

was wired.  The 3' and 4' enclosures have two motorized 

impellers. 

4.  Remove four screws in each motorized impeller. 

WARNING:  High-speed blower.  Never operate 

impeller with housing off. 

5.  Replace each capacitor with a new one of equal voltage and 

capacity. 

6.  Reassemble each new motorized impeller by reversing the 

assembly steps. 

7.  Perform a HEPA filter leak check. 

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