Section 8: Troubleshooting
Airmetrics
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8 TROUBLESHOOTING
This section identifies common problems and the action necessary to correct them.
Problem
Solution
The flowm eter will not zero
when a leak chec k is
performed.
Prior to every sample run with the pump
running, check for leaks by removing the inlet
assembly and covering the quick connect inlet
with palm of the hand or a finger. The
flowm eter shou ld drop to z ero. If not, a le ak is
present. Check all tubings and fittings for
cracks an d tightness . Check the pum p nozzle
connections and the flowmeter for cracks.
NOTE: w hen checking the fittings for tightness
DO NOT use a wrench or other tool to tighten
these connections. These fittings are made to be
finger tightened. If a leak persists after finger
tightening, replace the fitting.
A pump nozzle fitting has
broken off.
Jam a small Phillips head screwdriver or tip of
penknife blade into hole of broken fitting and
turn out counterclockwise. Replace with a new
fitting.
The charger light on top of
battery fails to light when
charger is plugged in.
The charging LED on the top of the battery
should light briefly even if the battery is already
fully charged. If the LED fails to light, either
the transfo rmer is de fective, the b attery is
defective, or the battery charger board inside
the battery case needs to be replaced.
1) Switch the transfo rmer to the seco nd battery
pack. If the LED on this pack fails to light, the
transformer is probably defective. If you have a
second sampler, use the transformer from that
Airmetrics MiniVol Users Guide
56
Airmetrics
sampler to charge the batteries.
2) Disassemble the battery case using a Phillips
screwdriver and connect the battery charger
board to another battery. If the same condition
results, the battery charge r board is defective. If
the battery LED lights and the new battery
charges, the previous battery is defective.
The battery charger light on
the battery top does not turn
off after overnight charge.
The battery may be defective, as indicated by
the charger light remaining on "high charge"
(
i.e.
, the battery fails to hold the charge and the
charger continues to charge). Connect a new
battery to the battery charger board. If the same
condition results, the charger board is defective.
If the light turn s off, the pre vious ba ttery is
defective.
Battery voltage is less than 12
volts after charging or the
battery will not power the
sampler for a 24hr run.
1) Check the battery by connecting a volt-ohm
meter (VOM) to the negative and positive
battery terminals located on either side of the
battery ch arger light (th e negativ e termina l is
odd colored and located next to the sampler
catch). If there is no voltage or the VOM
readings are intermittent, check that the
terminals on the ba ttery cove r are tight. If no t,
see next step.
2) If there is still a voltage problem , remove
the battery pack top using a Phillips screwdriver
and look for loose connections. T he battery
charger board should be securely clamped to the
banana jacks and connected securely to the
battery. T ighten an d clean an y conne ctions if
corroded. Ch eck the battery cha rging jack for a
snug fit with the charging transformer plug.
Connect the meter directly to the internal
battery terminals. If there is still no or low
voltage, see step 3.
