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2.2 Activation
Turning your Defender on and off
Simply press the power button.
• Press the On/Off button for 1 second to turn on your Defender.
• When first turned on, your Defender displays an opening
screen showing the product name, model number and
flow range.
• Press the On/Off button for 3 seconds to turn your
Defender off.
2.3 Connections
Attaching your Defender to a device
Connect device to be calibrated to the appropriate Defender port.
Use 1/4 inch diameter tubing.
• Connect to outlet at top (suction fitting) when a device draws
air (such as sampler).
• Connection tubing to bottom inlet for devices that push air in
(pressure devices).
2.1 Battery
Charging, installing and monitoring your
Defender battery
Your Defender battery is charged at the factory, but we
recommend that you make sure it is fully charged before
initial use.
• Connect the AC power adapter to the Defender’s
Charging Jack (DC In).
• Plug the AC power adapter into an AC outlet.
Initial charging should take about eight (8) hours.
After the initial charge:
• You may continue to charge your Defender indefinitely
simply by leaving it connected to the AC power adapter.
• Be sure to charge the battery at least every three (3) months,
to maintain battery life.
The battery symbol on the LCD display indicates your Defender’s
battery charge condition. A shaded battery icon indicates a full
charge. As the battery voltage drops, the indicator will empty
in 20% increments.
2.0 Operation
2.0