Labconco Protector Work Stations 3930021 - Manual (Page 59)

Chapter 6: Maintaining Your Enclosure
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Ammonia only
For ammonia, use 10% of the impregnated carbon weight. Assume use of a 50%
solution of ammonia for these calculations. These values are for one filter. If
using two filters, then double the adsorption volume.
Number
of
Filters Filter Size
Pounds of
Ammonasorb
II Carbon
Adsorbed weight of
Ammonia
Adsorbed
Volume of 50%
Ammonia
Solution
1 36 x 18 x 1 15.2 1.52 lbs./ 690 g 1382ml
Fluorescent Light Replacement
1. Disconnect the power.
2. Locate the two Phillips machine screws on top of the light and remove.
Lift up the light assembly.
3. Rotate and remove the old fluorescent lamp.
4. Reinstall the new fluorescent lamp and screws in reverse order.
5. Power the unit up and try the new fluorescent lamp.
Motorized Impeller Replacement
The motorized impeller must be replaced as a complete unit. When the motorized
impeller is replaced, the capacitor may also be replaced. See Appendix A for
Replacement Parts Diagram. See Figure 6-11 for an isometric view of the
motorized impeller.
Do NOT contact blower wheel while still in motion.
NE PAS être en contact avec la roué du ventilateur tant qu’il est
en marche.
1. Wear appropriate personal protective equipment to decontaminate the filtered
enclosure and then unplug from the electrical outlet.
2. Lower carbon filters per removal procedure outlined 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.
4. Remove the machine screws that support the plenum pan with the air intake
hole for the motorized impeller.
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