Sensidyne GILAIR-3, Operation & Service Manual

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Gilian ®
GILAIR-3 & GILAIR-5 AIR SAMPLING SYSTEMS
Sensidyne Document No. 800880M (Rev E)
3.4
If the “CAL” display appears instead at this time,
press the MODE/HOLD button twice more to
present the “LAST” run data.
Record the “LAST” run data at this time.
NOTE
If the On/Off switch is set to On at this point, the last run
data will be lost as a new sampling run is started.
3. After 5 minutes free of any button depression, the
display will blank as the sampler returns to the
“sleep” mode. Return to Step 1 to reactivate the
unit.
2.2.3 Setting The Pump Flow Rate
1. From the “LAST” presentation, pressing the MODE/
HOLD button will change the display to a flashing
“CAL” presentation.
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.
2.2.4 Sample Gathering
Begin the sample run by switching the On/Off switch
to the On position and secure the front anti-tamper
cover. The display will continuously show the elapsed
sampling time for the sampling run, with the error per-
centage and running icons also shown. The pump will
operate at the flow rate set at the last calibration adjust-
ment.
2.2.5 HOLD (Pause) Feature
1. With the left side anti-tamper cover open (see Fig-
ure 2.1), the sampling operation may be inter-
rupted for breaks or lunches by pressing the
MODE/HOLD button for at least 1 second. The
pump will stop and a “Hand” icon 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.
2.2.6 Sampling Run Termination & Recovery
1. When the On/Off switch is moved to the Off posi-
tion, the sampling run is terminated.
2. The accumulated run time minutes are displayed
for 5 more minutes, along with the icon (symbol)
data. The unit then goes into “sleep” mode to con-
serve the battery charge.
3. If you desire to exit the 5 minute run data display
to return to a blank display, perform a display self-
test (Section 2.2.7). Then, follow the instructions
for waking the pump (Section 2.2.2) to perform an-
other action.
2.2.7 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.