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7. Troubleshooting
FAULT
The LSU does not operate
with the AC or DC Power
Cord connected.
The LSU cannot be operated
from the internal battery.
The LSU operates, but little
or no suction available.
Battery Status Indicator is
not ON.
Vacuum Indicator indicates
more than 100 mmHg with
free air flow
CONDITION
External Power Indicator is
not lit when the Operating
Knob is set to “0”.
External Power Indicator is lit.
Power ON Indicator is OFF.
Floater valve is closed.
Canister full.
Poor vacuum connection
between Pump Unit and
Canister.
Patient Suction Tubing twisted
or blocked.
Battery is not charged.
Tube(s) is kinked or twisted
ACTION
Check power cord connec-
tions and the external AC- or
DC-power source.
The LSU must be returned
for service (see section 6).
Check that battery is installed.
Place the LSU on charge.
If still faulty after charging com-
pleted, remove and replace the
battery (see section 5.6).
Unplug the Filter/Vacuum
Tubing to release the vacuum
Remove and replace the
Canister (see section 4.2).
Install the Vacuum Connector
Tubing correctly.
Untwist the Patient Suction
Tubing and/or clear blockage
or replace the tubing.
Check power cord connections
and that battery is installed
Straighten / untwist the tube(s).
Summary of Contents for Suction Unit
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