SKC 224-PCXR8 Universal Pump - Manual (Page 19)

17
Turn the fl ow adjust screw (Figure 3, #2) for the appropriate port
of the low fl ow holder until the desired fl ow rate is achieved.
Turn clockwise to decrease the fl ow.
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.
When the desired fl ow is set on the
initial tube, place the pump in Hold
by pressing Flow and Battery Check.
Remove the calibrator from the tube
and connect to the exposed end of
the next sorbent tube. Press Flow and
Battery Check and 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.
Do not exceed 500 ml/min fl ow rate per tube.
For tri and quad models, fi rst rotate each anti-tamper cover
(Figures 3 and 4) 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, press Flow and Battery
Check to place the pump in Hold and disconnect the calibrator.
Replace the sampling media used for calibration with unexposed
media for sample collection. Use a protective tube cover to
prevent tube breakage.
If sampling with fewer tubes than number of ports, insert unopened
sorbent tubes in the empty ports to seal them.
2
(cont’d)
Screw Screw
Figure 4
Cut-away of Tri/Quad Low
Flow Holder