8. Servicing
There are no user serviceable parts inside the cabinet. Do not open cabinet.
Please note that wear and tear parts of the pump mechanism should be changed every third year.
Refer servicing to personnel qualified by Laerdal Medical, or to Laerdal Medical or one of its authorised
distributors.
9. Trouble Shooting
Fault Condition Action
The LSU does not
operate with the AC
or DC Power Cord
connected.
External Power Indicator is
not lit when the Operating
Knob is set to “0”.
Check power cord connections and the
external AC or DC power source.
External Power Indicator is lit. The LSU must be returned for service (see
section 8).
The LSU cannot be
operated from the
internal battery.
Power ON Indicator is OFF.
OR
All the lights in the front panel
flash on and off repeatedly.
Check that battery is installed.
Place the LSU on charge.
If still faulty after charging completed,
remove and replace the battery (see
section 6.7).
The LSU operates,
but little or no suction
available.
Vacuum Seal blocked by float
ball.
Unplug the Vacuum Seal to release the
vacuum
Canister full. Remove and replace the Canister (see
section 4.3, 5.3)
Poor vacuum connection
between Pump Unit and
Canister.
Install the Vacuum Connector
Tubing correctly.
Patient Suction Tubing twisted
or blocked.
Replace the filter or liner if the filter is
blocked Untwist the Patient Suction
Tubing and/or clear blockage
or replace the tubing.
(Serres) Lid is not properly
sealed
Seal lid using vacuum, not force. See section
5.3.4
Battery Status Indicator
is not ON.
Battery is not charged. Check power cord connections and that
battery is installed
Vacuum Indicator
indicates more than 100
mmHg with free air flow
Tube(s) is kinked or twisted Straighten / untwist the tube(s).
The LSU does not
charge with the AC
or DC power cord
connected
The external Power indicator
is not lit.
Check power cord connections
and the external AC- or DC-power source.
The LSU must be returned for service (see
section 8).
A flat battery cannot be recharged
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