RKI Instruments GX-94 - Manual (Page 49)

GX-94 Operator’s Manual Page 48
inserts into the threaded hole in the sensor screen, then tighten it
to connect the pump and the instrument.
3. Connect the sample hose and probe to the pump inlet.
Using the GX-94 with the Pump
1. Turn on the GX-94 and slide the pump power switch to the ON
position. Verify that the pump is running (low humming sound).
2. After the GX-94 has completed normal start-up, place the probe
tip in the area to be monitored.
Note
Allow a few seconds for the GX-94 to respond to changes in
the sample; response time will vary with sample hose length.
Do not immerse the probe tip in liquids.
3. The GX-94 will display gas concentrations, sound alarms, and log
data normally.
4. If the sample system (probe, filter, hose, pump) is blocked or
restricted, the Low Flow alarm on the pump will sound. This alarm
is a steady tone and lit yellow LED on the top of the pump. Take
the GX-94 to a non-hazardous area, then check the probe, filter,
and hose for foreign material and examine the hose for pinches or
kinks.
W
ARNING
W HEN THE PUMP IS INSTALLED , THE GX-94 CANNOT MONITOR
FOR GAS UNLESS THE PUMP IS TURNED
ON
AND OPERATING
CORRECTLY
. T
O RETURN THE
GX-94
TO AMBIENT MONITORING
,
REMOVE THE PUMP .