RKI Instruments RP-2009 - Manual (Page 12)

9 RP-2009 Pump for the GX-2009
If an optional hose and probe are used instead of the rubber
sample nipple, hold the probe in the area to be sampled. To
sample from a well or other similar sample area, the hose and
probe may be lowered into the sample area. Allow the pump
unit to sample for 90 seconds for a full response on the
GX-2009.
NOTE: Although the RP-2009 pump does have a hydrophobic
filter built in, the optional probe does not have a
hydrophobic filter. It has a dust filter only.
10.Monitor the GX-2009 display for the gas readings and take
appropriate action if gas alarms occur.
11.When sampling is complete, go to a fresh air area and turn off
the pump unit.
12.Remove the RP-2009/GX-2009 assembly from your belt or
clothing.
13.Turn off the RP-2009 by pressing and holding the POWER
button until the RP-2009 sounds a long beep and the power
indicator LED turns off, about 3 seconds.
14.Turn off the GX-2009.