SKC 224-52 AirChek 52 - Manual (Page 9)

7
Setting or Verifying Flow Rate
Ensure pump has run for
fi ve minutes before calibrating.
Using 1/4-inch Tygon ® tubing,
connect the sample medium to
the pump intake (Figure 1, #4).
Lift the control cover (Figure 1,
#5). Start the pump using the on/
off button (Figure 1, #3).
Connect a calibrator to the intake of the sample medium.
Adjust fl ow by using a screwdriver to turn the fl ow adjustment
screw (Figure 1, #2), clockwise to increase or counterclockwise
to decrease fl ow, until the calibrator indicates the desired fl ow
rate. Use proper calibration technique.
When the fl ow rate is set, press the on/off button to turn off
the pump and disconnect the calibrator.
Replace the sample medium used for calibration with an
unexposed medium for sample collection.
Sampling
Before use, allow pump to equilibrate after
moving it from one temperature extreme
to another
Protect sample pump from weather when
in use outdoors.
Use of any device other than the
approved battery pack to power the
pump voids the UL Listing for intrinsic
safety and any warranty.
For personal sampling, clip the sample
collection medium to the worker in the
breathing zone and the pump to the worker’s
belt using the belt clip.
Press the on/off button to clear the elapsed time display and to
start sampling. Record the start time. The LCD will automatically
track elapsed pump run time.
At the end of the sampling period, press the on/off button and
record stop time.
Calibrator
Sample medium
Tubing
Calibration train with
fi lter cassette
2
Clip sample
medium to worker
and pump to belt.
3
continued on page 8