Troubleshooting - Laerdal Serres Guia Del Usuario

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 oper-
ates, but little
or no suction
available.
Battery Status
Indicator is not
ON.
Vacuum Indicator
indicates more
than 100 mmHg
with free air flow
The LSU does not
charge with the
AC or DC power
cord connected
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.
OR
All the lights in the front
panel flash on and off
repeatedly.
Serres Suction Bag is full. Remove and replace the Serres Suction Bag.
Patient Suction Tubing
twisted or blocked.
Lid is not properly sealed Seal lid using vacuum, not force.
Battery is not charged.
Tube(s) is kinked or
twisted
The external Power
indicator is not lit.
Action
Check power cord connections and the external
AC or DC power source.
The LSU must be returned for service.
See Service and Maintenance section.
Check that battery is installed.
Place the LSU on charge.
If still faulty after charging completed, remove
and replace the battery.
Replace the Suction Bag if the filter is blocked
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).
Check power cord connections and the external
AC- or DC-power source. The LSU must be
returned for service. A flat battery cannot be
recharged.
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