Labconco FilterMatPortable Exhausters 3970024 - Manual (Page 39)

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Chapter 5: Maintaining Your FilterMate
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4. Using the “^” or “v” keypads, respectively, increase
or decrease the numerical value until it equals 48
for the FilterMate connected to the enclosure. (36
for the FilterMate by itself).
5. Press the “ENTER” Keypad. The photometer will
scan for 15 seconds, and then the “0” keypad will
flash. Press the “Enter” keypad. The unit will scan
for 5 seconds, the display will read “0000”, and the
unit will sound a confirming tone.
6. Set the valve to “DOWNSTREAM”. Place the palm
of your hand over the sampling port of the pistol.
There should be a strong vacuum at this port. If the
vacuum is weak, contact Air Techniques Hamilton
Associates.
7. Turn the FilterMate on and let it operate for a
minimum of 5 minutes.
8. Adjust the speed control of the FilterMate to full
speed.
9. Position the aerosol generator discharge in the
intake.
10. Start the aerosol generator (Pressure to be 20 +/- 1
PSIG). Ensure that one Laskin nozzle is in the
“open” position.
11. Allow the generator to operate for a minimum of 15
seconds. Scan the downstream side of the HEPA
filter by passing the sampling nozzle of the gun in
slightly overlapping strokes over the entire surface
the filter, with the sampling port not more than 1
inch from the surface of the filter media. Scan the
entire periphery of the filter and the gasket between
the filter frame and the FilterMate frame. Scanning
shall be done at a traverse rate of not more than 2
inches per second.
Acceptance
Aerosol penetration shall not exceed 0.01 percent measured by the
photometer.