Section 8: Troubleshooting
Airmetrics
57
NOTE : if loose or corroded c onnections w ere
found m ake sure the battery has receiv ed a full
charge before proceeding with the next step.
3) Even if the VOM meter indicates the correct
voltage, perform the following check. Connect
a 12-volt lig ht ( such as a autom obile hea dlight )
to the battery to simulate a load. Monitor the
battery voltage while connected to the simulated
load. The battery voltage should drop and
stabilize somewhere between 11 .5 and 12 volts.
When the simulated load is disconnected the
voltage should re turn to approxim ately 12.5
volts (with in ±0.2 volt). If the ba ttery fails to
stabilize or does not recover to about 12.5 volts,
the battery is most likely defective.
NOT E: mak e sure w hen perfo rming th ese tests
the battery is charged and disconnected from the
transformer.
The flow rate cannot be
accurately adjusted using the
Flow R ate Adju stment.
The pump valves and diaphragms are dirty or
worn and need cleaning or replacing (see
Section 7, Maintenance, "Cleaning/Replacing
Pump V alves and D iaphragms" ).
Check the pulse damp ener for cracks.
The flowmeter will not
register a high flow ra te ( 6
lpm or above). There is no
apparen t restriction or leak in
the plumbing.
The pump valves and diaphragms are dirty or
worn and need cleaning or replacing (see
Section 7, Maintenance, "Cleaning/Replacing
Pump V alves and D iaphragms" ).
Check the pulse damp ener for cracks.
Bags do not fill consistently or
significant a djustme nts to
frequency or pulse duration
have m inimal effe ct.
The solenoid valve is leaking. The performance
of the solenoid valve can be determined by
placing a clear piece of tube from the outlet
fitting into a few inches of water and watching
for any back flow of water into the tube
Airmetrics MiniVol Users Guide
58
Airmetrics
betwee n pulses. If a ny back flow is pre sent ,
check that the fittings are tight. If the problem
persists, contact Airmetrics.
