BIOS Defender 500 Series, Руководство пользователя, Страница: 16 / 19

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10.0 Troubleshooting
Answers to common operational questions
Bios is ready to help you with any operational issue you may
encounter with your Defender. But we may be able to save you
some time by providing a short checklist of the questions most
commonly asked of our customer service and technical
specialists.
Why won’t my Defender turn on?
If the Defender will not turn on, verify that the battery has been
charged. When connected to the AC power adapter/charger and
power is present a small green indicator light should be visible
through the front viewing window
My Defender won’t respond to push-button commands.
If the Defender fails to respond to push-button commands, you
can perform a hard reset of the Defender. This can be done by in-
serting a paper clip into the reset opening in the back of the unit.
I’m not sure I have my Defender connected properly.
Verify that the flow source is connected to the pressure port of
your Defender for pressure sources or to the suction port for ver-
ifying suction pumps. The unused port should be at atmospheric
pressure with any cap or plug removed. If you are calibrating a
gas that requires an exhaust line to vent the measurement gas,
ensure that the tubing is of sufficient diameter not to create a
pressure drop greater then 5 inches of water.
How do I protect against leaks?
Ensure that hose and tube fittings are tight and leak free.
The tubing connecting your flow source (pump, mass flow
controller, needle valve, sonic nozzle or restrictor) to the
meter should be kept as short as possible.
What do I do when my leak test fails?
First check to make sure that the leak test cap is on correctly and
it is not leaking through the leak test cap itself. If the leak test
cap is correct perform leak test both at the pressure and suction
side. If it fails, contact Bios Technical Support.
What’s the best way to connect to the filter medium?
When calibrating sampling pumps best results are obtained
with the filter medium connected to the pump and the Defender
connected to the inlet side of the filter medium with a short piece
of tubing.
10.0