Sensidyne GILAIR-3, Operation & Service Manual

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— PRELIMINARY —
Gilian ®
GILAIR-3 & GILAIR-5 AIR SAMPLING SYSTEMS
14
Sensidyne Document No. 800880M (Rev E)
SECTION TWO
OPERATION
2.1 BASIC MODEL
2.1.1 Preparation
1. Charge the battery according to the Battery Main-
tenance instructions in Section Four.
2. Using a small Phillips screwdriver, back out the
holding screw just enough so the anti tamper cover
plate can be rotated 180
°
. This exposes the On/Off
switch and the flow adjust screw (See Figure 1.1).
2.1.2 Setting The Pump Flow Rate
1. Move the On/Off switch to the On position.
2. Set the pump flow rate by turning the flow adjust
screw. (Clockwise for increased flow and counter-
clockwise for decreased flow.
3. 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.
4. When calibrating the sampler for flow, the sample
collection device (cyclone, impinger, filter cassette
or sorbent tube) should be in-line.
5. When the desired flow rate has been attained,
move the On/Off switch to the Off position. The
unit is now ready for sample collection.
2.1.3 Sample Gathering
Begin the sample run by switching the On/Off switch
to the On position and secure the front anti-tamper
cover. The pump will operate at the flow rate set at the
last calibration adjustment. The sampling run is termi-
nated by switching Off the On/Off switch.
2.1.4 Pull Start Operation
Applies only to GilAir-5 (PNº 800883-3) samplers
with a Pull Start Battery Pack (PNº 800869-7)
The GilAir-5 Pull Start model has a specially designed
jack that prevents operation of the unit while charging.
This Pull Start Jack may only be used as an ON/OFF
switch. Charging must be done through the original
charging socket.
2.2 CLOCK TIMER MODEL
2.2.1 Preparation
NOTE
The MODE/HOLD button must be pressed with a pointed
instrument, such as a ball-point pen.
1. Charge the battery according to the Battery Mainte-
nance instructions provided in Section Four.
2. Using a small Phillips-head screwdriver, back out
the holding screw of the anti-tamper cover plate to
expose the On/Off switch and the flow adjust
screw. (On the front of the pump.) On the left side
of the pump, back out the holding screw of the
anti-tamper cover around the display opening to
expose the MODE/HOLD button.
NOTE
The pump switches to an low-powered “sleep” mode
after five minutes of inactivity whenever the On/Off
switch is positioned in the Off position. This conserves
the battery charge.
3. If the On/Off switch is moved to the On position at
any time, the pump will begin to run and collect
data for a new sampling run.
Exception: If “CAL”
is showing on the display the pump is in calibra-
tion mode. No data will be collected at this time.
2.2.2 Waking The Pump For “LAST” Run Data
Readout
1. With the On/Off switch stiff Off, and using the
pointed instrument, press the MODE/HOLD button
to wake up the pump from its low-powered
“sleep” state.
2. The “LAST” message will appear on the display,
followed by a blank screen, and then followed by
the presentation of the run time data obtained by
the last sampling run. Also on the display in the
lower right hand corner is a small digit which indi-
cates the percentage of time in which the last sam-
pling run was made with greater than
±
5% (fault)
variation in the flow rate, with the maximum pre-
sentation of up to 9%. Across the lower portion of
the display may be presented one or more icons.