Labconco PuriCare Vertical Flow Stations 3830020 - Manual (Page 35)

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Chapter 6: Maintaining Your PuriCare
5. Place the pattern with the hole over the other
prefilter hole. Seal the pattern to the prefilter shelf
if necessary.
6. Place the DIM upside down over the hole in the
second pattern. Seal the DIM to the pattern with
duct tape if necessary.
7. Start the Station and let it run for at least two
minutes. Turn on the DIM and take at least 10
readings of the inflow volume. Average the
readings.
8. The average inflow volume, corrected for local
conditions, should be 650-670 CFM.
Inflow Volume Calculation -
Secondary Method
1. Turn the station off and raise the sashes.
2. Remove the work surface and the lower prefilters as
described earlier.
3. Using rigid cardboard or fiberboard, cut a 20 inch
square.
4. Use the square to cover the prefilter hole directly
above the blower.
5. At the other prefilter hole, mark a test grid at 4 ½
inch intervals around the perimeter of the hole,
establishing a 16 square grid in the hold.
Figure 6-3