SKC 224-44XR Universal Pump - Manual (Page 16)

14
Do not adjust the fl ow on the pump. Adjust the fl ow only by using
the fl ow adjust screw on the low fl ow holder.
Do not exceed 500 ml/min fl ow rate per tube.
Remove the calibrator from the
tube and connect to the exposed end of
the next sorbent tube. Repeat the fl ow
adjustment process until all tubes are
fl ow calibrated. Changing the fl ow on one
tube will not affect the fl ow rate through
the remaining tubes.
For tri and quad models, fi rst rotate each anti-tamper cover (Figures
4 [on page 12] and 5) to expose the fl ow adjust screws, then adjust the
appropriate screw until the calibrator indicates the desired fl ow.
When the fl ow rate is set for each tube, turn off the pump and
disconnect the calibrator.
Replace the sampling media used for calibration with unexposed
media for sample collection. Use protective tube covers to prevent
tube breakage.
If sampling with fewer tubes than number of ports, insert
unopened sorbent tubes in the empty ports to seal them.
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 low fl ow holder to
the worker in the breathing zone.
Start the sampling period by turning on the pump
using the on/off switch (Figure 2, #1), and record
the start time.
At the end of the sampling period, turn off the pump and record the
stop time.
3
Clip holder to
worker and
pump to belt.
2
cont’d
Screw Screw
Figure 5
Cut-away of Tri/Quad Low
Flow Holder