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Laerdal Suction Unit

Serres

User Guide

LSU Serres Cat.no 78 00 30

Contents

3

Important Information 4

Intended Use 4

Battery Cautions 5

Overview 6

User Interface 7

Assembly - LSU Serres Suction Bag System 8

Use 9

Before Use Checklist 9

Use 9

After Use Checklist 10

Emptying 11

Empty LSU Serres 11

Cleaning 12

Clean the Cabinet 12

Device Test 13

Before Device Test Checklist 13

Device Test Indicators 13

Run the Test 14

Device Test - Evaluation 16

Evaluation of Device Test Results 16

Device Test - Leakages 17

Troubleshooting for Leakages 17

Battery 18

Charging 19

Replace the Battery 20

Service and Maintenance 21

Warranty 21

Troubleshooting 22

Specications 23

Accessories and Parts 29

Important Information

4

Intended Use

The Laerdal Suction Unit (LSU) is a portable, electrically powered, medical suction

equipment intended for field and transport use. It is intended for intermittent operation

to remove secretions, blood or vomit from a patient´s airway to allow ventilation.

Higher vacuum levels are generally selected for oropharyngeal suctioning, and lower

vacuum levels are usually selected for tracheal suctioning and the suctioning of children

and infants.

Read this User Guide carefully, and become thoroughly familiar with the operation and

maintenance of the LSU before using it. Read all Cautions and Warnings before using

the LSU.

Warnings and Cautions

A Warning states a condition, hazard, or unsafe practice that can result in serious personal

injury or death.

A Caution states a condition, hazard, or unsafe practice that can result in minor personal

injury or damage to the product.

Warnings

• The LSU is not suitable for use in the presence of flammable liquids or gases; there can be

a danger of explosion or fire.

• Not intended for use in MRI environments.

• Do not use the LSU under environmental conditions that are outside the ranges specified in

Specifications section. This can endanger safety and adversely affect operation of the device.

• Do not block the Exhaust Outlet during use. This will lead to reduced flow and can also

cause damage to the LSU.

• Disconnect the LSU from external power prior to cleaning. Use a minimum amount of liquid

to prevent any electrical shock hazard.

• Do not immerse the LSU or allow it to stand in water or other liquids. This might damage

the device, and cause electrical hazard.

Cautions

• Do not pump any cleaning solution or other liquids through the vacuum pump, i.e. through

the Vacuum Connector. This can damage the LSU.

• Use only parts and accessories supplied by Laerdal Medical or one of our authorised

distributors to ensure that the LSU operates satisfactorily.

• Overflow of suctioned material can damage the device. If overflow of liquid from the

Canister into the pump is suspected, contact your local Laerdal Medical representative.

• The LSU should only be used by persons trained in the use of medical suction equipment.

Important Information

5

Battery

Cautions

• Only use batteries approved by Laerdal Medical. Other batteries will have problems related

to the battery status indicator of the LSU, the battery operation time and safety.

• The LSU must be charged between each clinical use.

• To maintain satisfactory operation of the battery, placing the LSU on continuous charge

immediately after use and when not in use is recommended.

• If it is not possible to place the LSU on continuous charge when not in use, make sure the

battery is charged for a minimum of 4 hours at least once a month.

• The LSU must be placed on charge for a minimum of 4 hours to reach full battery capacity.

Fast charging gives approximately 80% battery capacity after 3 hours (for a new battery).

Repetitive 3 hour charging is not recommended.

• Fully charging the battery is recommended. Repetitive charging to a lower capacity level will

reduce battery life.

• Always fully charge the battery before storage.

• Do not store the battery when it is discharged.

• Do not store the LSU with a discharged battery.

• Laerdal recommends charging a spare battery every 6 months when stored in room

temperature at 25 °C (77 °F).

Overview

6

Vacuum Inlet

Serres Vacuum Connector

Canister

Battery Door

Release Arm

Canister Holder

Holder for

Suction Tubing

Suction Tube

Serres Suction

Bag with filter

Patient Inlet

User Interface

Quick

Reference

Overview

7

User Interface

*Pressure conversion chart

mmHg 80 120 200 350 500

kPa 10.6 16.0 26.6 46.6 66.5

mBar 107 160 267 467 667

Test Button

Run the Device

Test program

Vacuum Indicator*

Actual vacuum level

during operation.

Each fully lit segment

represents 50 mmHg. If a

segment has a dim light,

this represents 25 mmHg

(e.g 125 mmHg is shown

by 2 fully lit and 1 dimly

lit segments).

Battery Status

Indicator

Operating Knob

On/Off switch

Vacuum selector

Failure Mode Indicator

Possible malfunction

detected

External Power Indicator

AC or DC power

connected

Power On Indicator

• Continuously lit - LSU is

switched on.

• Rapid flash (approx.

twice per second) -

Device Test in progress.

• Slow flash (approx.

once per second) -

Automatic power save

mode activated; Device

Test interrupted or

battery discharged.

Assembly - LSU Serres Suction Bag System

1 2

3 4

8

Note

Turn the operating knob to 500+ mmHg. Block the Patient Inlet with your thumb and

simultaneously push the lid down. The lid is properly installed when vacuum has reached

500 mmHg. Release the Patient Inlet and make sure that the bag is fully inflated.

CLICK

A

BC

D

Use

1

2

2. When suction is complete, set the

Operating Knob to “0” to turn off.

1. Unwind the Suction Tubing. Set

the Operating Knob to the required

vacuum level. The LSU will switch on

and start to operate. The Power On

Indicator lights up during operating.

9

Before Use Checklist

• Check that no parts are missing and that all parts are clean.

• To operate the LSU from an external power source, connect to either external AC or

DC power. To operate the LSU from the internal battery, check that the

battery is installed.

• Run Device Test.

• Check that the Serres Vacuum Connector is properly connected to the LSU and to

the canister.

• Check that the lid of the canister is properly sealed: block patient inlet and turn on the

LSU. Vacuum will build up when all parts are assembled correctly.

• Attach appropriate suction catheter if necessary. (Not supplied by Laerdal Medical).

Use

10

Caution

Even if the Operating Knob is set to “0”, voltage is present on some of the internal circuitry

when the LSU is connected to external power. Disconnect from the mains to fully remove

power.

Note

The LSU has an automatic power save mode which switches the pump motor off. While in

this mode, the Power On Indicator will flash slowly (approx. once per second). Power save

mode is activated when the Operating Knob is set to 200, 350 or 500+ mmHg and the

actual vacuum level has been continuously higher than 120 mmHg for more than 2 minutes.

To exit power save mode and revert to normal operation, set the Operating Knob to any other

position and then go back to required setting.

After Use Checklist

• Inspect all parts of the LSU for damage and excessive wear. Replace parts if necessary.

• Clean the LSU cabinet. Clean and disinfect reusable parts. See Cleaning section.

• LSU Serres: The Serres Vacuum Connector should be replaced regularly. Place an

unopened Serres Suction Tube on the side of the LSU.

• Perform Device Test. See Device Test section.

• Place the LSU on charge.

Note

The Serres Suction Bag system contains a hydrophilic filter that shuts off the vacuum if the

canister is full or the LSU tips over. To restore the vacuum, replace the Suction bag.

Emptying

A

BC

3

4

2

5

1

11

Safely dispose of the Serres Suction bag

and suction tube according to

local protocols.

Empty LSU Serres

When liquid reaches approximately

1000 ml, the LSU will not suction

any more. If overflow of liquid from

the bag into the pump is suspected,

contact Laerdal Service. See Service

and Maintenance section.

Cleaning

12

Parts to be cleaned or replaced regularly:

Serres Canister

Serres Vacuum Connector

The disposable parts must be replaced after each use.

Clean the Serres canister if needed according to manufacturer’s instructions for use.

Clean the Serres Vacuum Connector by wiping with a damp cloth or a sponge. Do not

autoclave or attempt to disassemble. The Serres Vacuum Connector should be replaced

regularly.

Clean the Cabinet

Use a minimum amount of liquid to prevent any electrical shock hazard. Do not immerse

the LSU or allow it to stand in water or other liquids. This can damage the device, and

cause electrical shock resulting in injury to persons.

Use a cloth or sponge that is dampened with a mild detergent (hand dishwashing liquid

or similar) to clean the external surfaces of the LSU.

Use a detergent that is compatible with the materials listed in the Material Chart, and

follow the detergent manufacturer´s instructions.

Use a cloth or sponge dampened with water and wipe the surfaces again.

Dry the surfaces using a clean cloth or a paper towel.

Device Test

13

The Device Test is a user initiated test program to identify whether the LSU operates

satisfactorily or if it needs service. If the device is not in frequent use (i.e. less than once

a month), the Device Test should be performed both on a monthly basis and after each

Cleaning and Assembly process.

The program runs 4 different tests:

1. Occlusions - Blockages in the Suction System, including canister and tubing.

2. Vacuum efficacy - How much vacuum builds up in the Pump System within 3 seconds.

3. Maximum vacuum level - The maximum achievable vacuum level of the

LSU within 10 seconds.

4. Leakages - Air leakages in the Pump System, including canister and tubing.

Before Device Test Checklist:

• Ensure the LSU is correctly assembled and the Patient Suction Tubing is unwound.

• The Suction Catheter Adapter is removed from its holder (if applicable).

• Ensure the battery is not being charged (the device is not connected to

AC/DC power source).

Note

If you need to interrupt the test and revert to normal operation, turn the Operating Knob to

another position and then select the required setting.

Running Test 1

Testing for occlusions in

the Suction System

Running Test 3

Testing the maximum

achievable vacuum level

of the LSU

Running Test 2

Testing the vacuum build-up

efficacy of the Pump System

Running Test 4

Testing for air leakages in the

Pump System

Test result indication

Device Test Indicators

Device Test

1

3

2

4

1

3

2

4

14

Run the Test

1. Press and hold the Test Button

while turning the Operating Knob to

500+ mmHg.

2. Hold the Test Button in for 2 seconds.

3. The test will start immediately.

During test mode, the Power On

Indicator will flash rapidly.

4. When LED 2 lights up, block the Patient

Suction Tubing with your thumb.

Device Test

5

15

Notes

• If the tubing is not blocked within 2 minutes, the test will be interrupted.During

interrupted device test, the Power On Indicator will flash slowly.

• To restart the test, set the Operating Knob to “0” and start over again.

• To evaluate test results, do not tun off the LSU after running Device Test.

5. Keep the tubing blocked while LED 2,

3 and 4 light up. Release the tubing when

LED 1 lights up again.

Device Test - Evaluation

16

Test No. Test result indication Action if test failed

Test 1 -

Occlusions • Check possible blockages (e.g. twisted tub-

ing, blocked filter, blocked filter in the liner)

and run the Device. Test again.

• If the High Efficiency Filtration Kit is installed

the pass limit is 150mmHg.

Test 2 – Vacuum

efficacy • Check Connectors, Tubes and Canister Lid

for leakage* or damage.

• Check exhaust outlet for occlusion and run

the Device Test again.

Test 3 – Maxi-

mum vacuum • Check Connectors, Tubes and Canister Lid

for leakage* or damage.

• Check exhaust outlet for occlusion and run

the Device Test again.

Test 4 - Leakages Check Connectors, Tubes and Canister Lid for

leakage* or damage and run the Device Test

again.

After evaluating the test results turn the Operating Knob to “0” to exit the Device Test.

Evaluation of Device Test Results

After the test is completed, the Vacuum Indicator

will display the results. Press the Test Button to scroll

through the results of each test to display the results.

Test Passed

<100 mmHg

Test Passed

>300 mmHg

Test Passed

>500 mmHg

Test Passed

>450 mmHg

Device Test - Leakages

1

3

2

17

Troubleshooting for Leakages

If the device test has failed, check whether the system is leaking. Run the Device Test

again blocking different parts in turn, until you find the failure.

Test by blocking the Pump System

Run the Device Test whilst blocking the outlet. If

the device passes the test, there are no leakages in

the Pump System.

Test by blocking the Patient Tubing Inlet

Run the Device Test whilst blocking the Patient Tubing

inlet on the Canister. If the device passes the test,

there are no leakages in the Canister.

Note

If the LSU does not pass one or more of the steps in this test after suggested actions are

taken, the device might need to be returned for service (see the Troubleshooting guide).

Battery

18

The LSU can be operated from the internal battery, and can be operated or charged

from one of the following external power sources:

AC mains when used with the AC Power Cord: 100-240 VAC (50/60 Hz).

DC mains when used with the DC Power Cord: 12-28 VDC.

The LSU battery can also be charged in an optional External Battery Charger. A Wall

Bracket to hold the LSU during operation and (optional) charging is available separately.

See Accessories and Parts for more information.

Battery Status Indicator

This Battery Status Indicator has 3 functions:

• During operation from internal battery: indicates approximate remaining battery

capacity.

• During charging: indicates approximate achieved battery capacity.

• During device testing: indicates which device test is in progress.

If no battery is installed, the battery status indicator will be fully lit for approx. 5 sec. until

it is turned off.

Note

During operation from internal battery and during charging, the displayed values must only

be used as indications.

Battery Capacity

Capacity Output

< 75% The LEDs will be lit sequentially

75 - 80% 3rd LEDs lit and 4th flashing

> 80% 4 LEDs lit

Immediately after turning the LSU on or switching from external power to internal

battery operation, all 4 LEDs will flash for 5 seconds before the remaining battery

capacity is displayed. Due to the nature of voltage based battery capacity measurement,

the battery status indication may differ from unit to unit. Each battery may vary in voltage

versus remaining capacity, thus allowing for variability in the reading. Other outside

variables such as temperature may also affect accuracy. The indicator is targeted to show

battery capacity as indicated below. The graph shows how the accuracy of the indication

can vary.

4 LEDs

3 LEDs

2 LEDs

1 LED

time

Caution

If the LSU or the NiMH battery has been stored at low temperatures (< 12 °C / < 54 °F),

the LSU may indicate lower remaining battery capacity than actual when first switched on.

This is due to the nature of NiMH batteries. The battery indicator may flash on one

LED, which normally indicates Battery Low. The LED may continue to flash until the LSU

temperature is above 12 °C / 54 °F and the LSU is switched off and on again. The low

battery indication in this instance is not a correct indication of the residual battery capacity.

Battery

19

Charge the Battery

The internal rechargeable battery can be charged directly from external AC or DC power.

1. Ensure the Operating Knob is set to “0”.

2. Connect either external AC or DC power to the LSU and charging will start

automatically.

3. During charging, the Battery Status Indicator will indicate approximate achieved

battery capacity. Minimum charging time for full charge is 4 hours.

A completely discharged battery cannot be charged by the LSU and must be replaced.

If LSU battery is kept on constant charge, perform device test at least once a month to

exercise battery.

Cautions

• Do not perform the Device Test during battery charging.

• The recommended ambient temperature for charging is from 15°C to 25°C.

• The battery will not be charged when the LSU is in operation.

Check the Battery Quality

If poor battery quality is suspected, charge the battery for a minimum of 4 hours and

then perform the following test. Do not connect to external power.

1. Run the Device Test.

2. Let the LSU operate continuously at 500+ mmHg setting and free air flow for

20 minutes.

3. If the LSU stops before completing the 20 minutes, the battery should be discarded.

Caution

Replace the battery when it does not pass the Battery Quality Check or after 3 years,

whichever comes first.

Battery

12

3 4

5 6

20

Caution

Use only batteries recommended by Laerdal Medical. When you discard the battery, dispose of

safely in accordance with local protocols for Nickel Metal Hydride (NiMH) batteries.

Replace the Battery

CLICK

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