19
Gilian
®
GILAIR-3 & GILAIR-5 AIR SAMPLING SYSTEMS
Sensidyne Document No. 800880M (Rev E)
2.3.3
Setting The Pump Flow Rate
1.
From the “LAST” presentation (which follows the
blank display), press the MODE/HOLD button to
change the display to a flashing “CAL” presenta-
tion.
2.
Switch the On/Off switch to the On position. The
“CAL” display will be steady.
3.
Set the pump flow rate by turning the flow adjust
screw. (Clockwise for increased flow and counter-
clockwise for decreased flow.
4.
Use the built-in rotameter as a flow indicator only.
Accurate flow adjustment settings shall be made by
using a Gilibrator 2, or equivalent flow calibration
device, for calibration measurements.
5.
When calibrating the sampler for flow, the sample
collection device (cyclone, impinger, filter cassette
or sorbent tube) should be in-line.
6.
When the desired flow rate has been attained,
switch the On/Off switch to the Off position and
replace the left side anti-tamper cover if desired.
The unit is now ready for sample collection.
2.3.4
Sample Gathering
From any pre-operation mode of the sampler, begin
the sampling run by switching the On/Off switch to the
On position and secure the front anti-tamper cover if
desired. The pump will operate at the flow rate set at
the last calibration adjustment. For the first 20 seconds
of the sampling run, the program number of the se-
lected program will be shown as PC or P1 through P6.
The display will thereafter continuously show the
elapsed sampling time for the sampling run or the de-
lay time until the next run time interval, with the error
percentage and running icons also shown.
2.3.5
HOLD (Pause) Feature
1.
With the left side anti-tamper cover open, the sam-
pling operation may be interrupted for breaks or
lunches by pressing the MODE/HOLD button for at
least 1 second. The pump will stop and a “Hand”
symbol will appear flashing in the display window.
2.
The sampling run can be resumed by pressing the
MODE/HOLD button again. The “Hand” icon will
be removed from the display window.
2.3.6
Sampling Run Termination & Recovery
1.
When the On/Off switch is moved to the Off posi-
tion, the sampling run is manually terminated. A
programmed run (P1 through P6) will self-termi-
nate upon completion if the On/Off Switch re-
mains On.
2.
The accumulated run time minutes are displayed
for 5 more minutes, along with the icon (symbol)
data. The unit then goes into the “sleep” mode
when the On/Off switch is Off. If the switch is On
when a programmed run has been made, the
“SHUT”/“OFF” display appears, and remains until
the switch is turned Off.
3.
If you desire to exit the 5 minute run data display
to return to a blank display, perform a display self-
test (Section 2.3.7). Then, follow the instructions
for waking the pump (Section 2.3.2) to perform an-
other action.
2.3.7
Display Self-Test
1.
Whenever the On/Off switch is in the Off position
and the MODE/HOLD button is pressed continu-
ously for at least three seconds, the sampler dis-
play will show the unit’s program date code (e.g.,
9644) for as long as the button is pressed.
2.
Releasing the MODE/HOLD button will allow the
self-test to begin, where all elements of the five
digit positions will be individually displayed, fol-
lowed by all five digits simultaneously counting
from 1 through 9, then back down to 1.
3.
Each display Icon will be individually displayed
from right to left, followed by all the icons flash-
ing twice before the display goes blank, terminat-
ing the test.
4.
The test runs for about 30 seconds, but can be
greatly accelerated by pushing and holding the
MODE/HOLD button depressed.
Summary of Contents for GILAIR-3
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