LIVETEC PowerTwin 21+ User manual

Operang Instrucons
Last revised: February 28th, 2019

Last revised: February 28th, 2019
page 2 of 29
Preface
The Operang Instrucons are directed at healthcare professionals physicians, who
are familiar with the handling and of low level laser systems.
The laser shower PowerTwin21+ is a therapy device for the low level laser therapy
of large body areas. Low level laser therapy belongs to the eld of complementary
therapy.
Advice
Please read the Operang Instrucons carefully before using the device. The
Operang Instrucons should always be kept at the place where the low level laser
system is employed.
Users must be able to reduce the risks and complicaons that are associated with
the use of low level laser systems by taking the appropriate acon.
Copyrights
These Operang Instrucons are subject to copyright law. All rights are reserved.
Copying, duplicang, translang and converng into an electronic format, in whole
or in part, are prohibited without the express permission of the manufacturer.
Manufacturer:
livetec Ingenieurbüro GmbH
Marie-Curie-Str . 8
79539 Lörrach
GERMANY
[e-mail]
www.livetec.de
Your Distributor / Hotline / Contact:
MKW Lasersystem GmbH
Landstr. 67
D-76547 Sinzheim / Germany
Fon: +49 7221 / 98 83 91
Fax: +49 7221 / 98 83 93
E-mail: [e-mail]
Internet: www.mkw-laser.de

Content
1. Funcon keys and display elements ...........................................................4
2. Intended Use ..............................................................................................6
3. Contra indicaons .......................................................................................6
4. Display and LED indicators ..........................................................................7
5. Operaon ...................................................................................................8
6. Changing the laser parameters .................................................................13
7. Using the laser ..........................................................................................14
8. Applicaon ...............................................................................................15
9. Replacing the adapters .............................................................................16
10. Maintenance and care ............................................................................16
11. Safety informaon ..................................................................................18
12. Manufacturer's labels and warning signs ..............................................19
12.1 Denion of symbols of the laser shower PowerTwin 21+ ..................20
13. Error messages and safety informaon ..................................................21
14. Technical data - Laser Shower PowerTwin21+ ........................................22
15. Appendix - Denion of frequencies ......................................................24
16. Notes on electromagnec compability ................................................25
16.1 Manufacturer's declaraon on electromagnec emissons ..................26
16.2 Manufacturer's declaraon on electromagnec immunity ............ 26-29
page 2
Scope of Delivery
MKW Low-Level Laser unit PowerTwin21 (Item-Code 010212)
adapter laser shower (Item-Code 021101)
adapter comb [oponal] (Item-Code 021102)
AC adapter 230V (Item-Code 021005)
Laser safety goggles for therapist (Addional periphery, oponal)
(Item-Code 020102)
Laser safety goggles for paent *Socaps* (Addional periphery, oponal)
(Item-Code 020103)
Device case (Addional periphery, oponal) (Item-Code 020301)
Acrylic tray (Addional periphery, oponal) (Item-Code 020405)
User Manual in English

page 4
1. 1. Funcon keys and display elements
1The PowerTwin21+ is switched on and o with this key.
2= SET The values can be selected and stored with this key.
3+/- Use Plus and Minus keys to change the values previously
selected with the SET-key
4 LASER Acvate/Deacvate laser output
5DISPLAY Display screen (menu-driven) of selected laser power,
operang mode, indicaon of therapy me as well as dose.
6 LEDs 6a: Two red LED:
On as error indicaon of LED diode operaon, please
contact customer service.
6b: Two yellow LED:
On when laser output acve
7 red
connector
Connector for the key pin - operaon of PowerTwin21+ is
only possible when the key pin is in correct posion.
8black
connector
Storage for key pin when lasershower is o.
9Adapter-
ring
An adapter is available for PowerTwin21+ laser shower
(with protecve glass) and a laser comb adapter (with
comb ps, oponal accessory).
10 Laser beam outlet
11 LEDs 4 red LEDs at the boom indicate acve laser output.

g.2:
shower adapter (top g.)
comb adapter (lower g.)
page 5 of 29
78
g.1:
PowerTwin21+ (casing, top side)
1
6b
6a
5
3
2
10 (11) 9
g.3:
AC adapter for PowerTwin21+

page 6 of 29
2. Intended Use
The laser shower PowerTwin 21+ is a device to apply low level laser (laser with
low energy) for the treatment of large body areas.
The laser shower PowerTwin21+ is a therapy device and can be used for wound
healing and relief of pain and inammaon.
3. Contraindicaons
The professional literature lists the following contraindicaons. They also apply to
the laser shower PowerTwin21+.
Absolute contraindicaons:
 Irradiaon of the eyes
 Photo sensivity
 Tumour paents
 Open fontanelles and epiphyseal plates in children
 Hyperthyroidis
Relave contraindicaons:
 Pacemaker paents (thorax)
 Epilepsy (head)
 Pregnancy (abdomen and back region)
 Endocrine organs (thyroid, tescles, ovaries)
Obstacles to therapy:
 Deep X-ray therapy
 Long-term medicaon
 Chemotherapy

page 7 of 29
This screen appears during the boong process aer the
laser unit has been turned on. The second line indicates
the soware status of the unit.
This screen appears aer the laser unit has been turned
on once the boong process is nished. The second line
shows the wavelength and the maximum CW output. The
loudspeaker icon indicates the sound is acvated.
Inial seng. The sengs which were used last and
the current therapy parameters (laser power, therapy
program, energy dose rate) are displayed. Factory seng
when delivering is: 50 mW * Mul * 10 min (15 J/LD)
A value that appears inverted can be changed with the “+”
and “–” keys. On this screen the laser power level can be
altered. Pressing the SET key saves the respecve value.
Eding possible for:  Therapy program  Energy
dose  and/or therapy me.
Seng the therapy program
Seng the energy dose
Seng the therapy me:
Maximum treatment me is 15 minutes.
This screen appears when the laser is acvated. Laser
power level, remaining therapy me and discharged
energy dose rate in Joule (J) are shown .
4. Display and LED indicators
Software
V.x.x EU
100mW 15 J/LD
MULTI
21x... mW/Mode
10:00 - 0,0 J/LD
100mW 10:00
CW
100mW 30 J/LD
CW
100 mW 30 J/LD
CW
100 mW 30 J/LD
CW
PowerTwin21+
808nm 21x100mW

page 8 of 29
5. Operaon
5.1 Unlocking
Insert the key pin into the red connector at the boom of the housing of
the laser shower PowerTwin21+ (● page 4, g. 1/7). The adapter ring for the
laser shower or laser comb must be plugged in (● secon 9, “Replacing the
Adapters”, page 15, resp. page 4, g. 2/10+11).
The PowerTwin21+ cannot be operated without the adapter ring. Only the
power supply unit AC/DC adapter type FW7555M/12 which was shipped with
the unit must be used.
Connect AC adapter with adapter plug
The power supply unit (AC adapter) and the PowerTwin21+ are connected with
an intermediate plug. Should you wish to remove the power supply unit from
the laser shower PowerTwin21+, please proceed as follows:
 Slightly push back the locking device (black sleeve)
at the plug, and pull the two plugs apart.
Aenon!
The plug-in connecon is a push-pull locking system. Hold the plug-in
connecon only by the sleeves with the arrows, as illustrated. Never twist
the plugs or pull at the back ends of the plug.
If you reconnect the PowerTwin21+ with the AC adapter, make sure you
observe the direcon of the arrows on the plugs.
5.2 Connect AC Adapter to the power supply
Connect the AC adapter to the mains (100–240 V~). A correct connecon is
indicated by a green control light at the AC adapter.
5.3 Inial sengs aer boong
Aer switching the device on, the output data of your lasersystem (wavelength
and max. output) are indicated in the second line.
PowerTwin21+
808nm 21x100mW

page 9 of 29
5.4 Further inial sengs
You can turn the display (right-handed/le-handed users) with the “+”key (page
4, g. 1/3).
5.5 Display of saved therapy parameters
By pressing the “SET” key, the currently set parameters (inial seng) of the
unit are displayed. With rst use you'll be indicated the following inial sengs:
The maximum output of 100 mW, the operaon mode Mul and an energy
dose of 15 J/LD (LD = laser diode) are preset when operated for the rst me.
Following this the laser power values selected and stored previously will be
displayed, as well as the therapy program and therapy dose used the last me.
Changing the laser parameters:
 Chapter 6.0 “Changing of laser parameters” (pages 10)
Acvang the laser:
 Chapter 7.0 “Using the Laser” (pages 14)
100mW 60 J/LD
MULTI

100 mW 30 J/LD
CW
6. Changing of laser parameters
Having pressed the SET key, the output value is blinking as highlighted in below
gure. Changes can be made by pressing “+/-“-keys accordingly. Sengs can be
done from 10% to 100 % (in regard to the maximum value) in increments of 10%.
By pressing the SET key again, the selected value is conrmed and stored. The
display changes, showing the following informaon.
The therapy program can be changed with the “+” and “–” (page 5, g. 1/3) keys
and saved with the SET key.
The seng opons are:
● CW ● Mulfrequency ● Alphafrequency ● Nogier-Frequencies A-G, L
● Nogier-Frequencies pot. A‘-G‘ ● Bahr-Frequencies 1-7 ● Reininger-
Frequencies ● free programmable frequencies 1-9,999 Hz.
New frequencies: ● Bahr+ , ● Solfeggio-frequencies ● FI-Bands
(FI: Regeneraon, Pain, Interference, Trauma, Inner Center, Detox,
Infecon, Bones, Nerve, Transcranium, Psyche/Vegetavum, Lymph, Trigger
Points) ● Sweeps (Sweep: Alpha, Purr, Beta, Theta, Delta) ● Cranio
Please note: therapy programs and frequencies on pages 22-23, appendix 1
page 10 of 29
100mW 30 J/LD
CW

An individual frequency can be set like this
When the value is ashing on the display, use the “+” or “-“ keys to select the
frequency programm you want and press the key SET for 2-3 seconds. This is
how you get to the seng mode for individual frequences. With the +/- keys
you then can select the desired frequency and conrm with pressing the SET key
again. Further pressing the SET key will transfer the selected frequency to the
treatment display.
Example: you want to select the „Nogier E“ frequency:
1. Aer boong is nished, use the arrow-key to select the program mode
*Therapy program*.
2. The mode currently selected shows a black background and is ashing.
3. Select the Nogier-Frequency using the „+/-„ key. The display now shows:
*Nogier xxxxx*
4. Press the arrow-key for 2-3 seconds. The display now shows in the rst line
the frequency *Nogier* and in the 2nd line the currently selected program.
5. Select *Nogier* by means of „+/-„ key. The display now shows a black back-
ground and the value is ashing.
6. Press the arrow-key twice, the 2nd line of the display now shows *Nogier E*.
The value is not ashing any more and you're being forwarded to the seng
mode *dose/me*.
The frequencies Bahr and Reininger can be selected accordingly.
The newly programmed frequencies Bahr+ and Solfeggio can be set analogous
to the Nogier frequqencies.
Seng a freely programmable frequency:
Twenty memory locaons (FP1 to FP20) are available for freely programmab-
le frequencies. When the value ashes, press the “+” or “–” key to enter the
frequency program FP. Keep the SET key pressed for 2–3 sec. to get to the
“Programmable” screen on the display.
page 11 of 29
Programmable
FP1:xxx Hz

Frequency x
xxxx.xx Hz
100mW 30 J/LD
CW
100mW 10:00
CW
Keep the SET-key pressed for 2–3 sec. to enter the frequency seng mode.
You can set the desired frequency (1 - 9,999 Hz) with the “+/–” and SET-keys.
First the thousands digit, then the hundreds digit, etc. Once the desired
frequency has been set, conrm with the SET-key (keep pressed for 2–3 sec.).
The frequency is now transferred to the treatment screen on the display (at
rst as a ashing value). The frequency is stored with the SET-key and displayed
on the screen.
A set value remains in the memory unl it is overwrien by another frequency.
Aer the treatment mode has been set, the display changes to the following
screen:
The energy dose rate can be changed with the “+/–” keys. The SET key
conrms the selected value. The selected dose automacally is being
converted into the corresponding therapy me required for the selected
output.
page 12 of 29

Press the SET key to conrm the value. Now the required therapy me is ashing.
It can be conrmed with the SET key.
Please note: Changing the therapy me with the „+/–“-key also changes the
dose needed for said therapy me depending on the selected output.
Possible sengs for the therapy me are:
10 seconds to 1 minute in increments of 10 seconds
1 minute to 15 minutes in increments of 1 minute
Possible sengs for the dose are:
1 J to max. 60 J
Once all laser parameters have been set, this is shown in the display. The
individual values are no longer ashing and you may start with the laser treat-
ment (● secon 7.0 *Using the laser*, pages 14).
Please note:
The maximum energy dose rate that can be selected is determined by the
maximum therapy me and the maximum laser power level of the laser shower
PowerTwin21+.
Example: Maximum therapy me for the laser shower PowerTwin21+
(100 mW) is 10 minutes and maximum laser power is 100 mW. The maximum en-
ergy dose rate that can be set is therefore 100 mW x 10 minutes x 60 s = 60 J/LD.
The minimum dose that can be selected is 1 J.
Note:
Please note that since energy and therapy me are correlated, changing
either one of the two parameters will impact the other parameter.
The other value will be adjusted automacally.
page 13 of 29

21x100 mW
10:00 - 0,0 J/LD
100mW 30 J/LD
CW
The selected value for the therapy me is conrmed and stored by pressing the
SET key again. You can now start using the laser (●secon 7: *Using the laser*).
Please note that the sengs for the parameters are retained when the unit is
turned o and on again.
7. Using the laser
The laser applicaon can only be acvated, if the inial seng (display of the
parameters) is shown on the screen.
Pressing the LASER key (g. 1/4) acvates the laser aer a 2-sec. warm-up pe-
riod. The LED (g. 1/6) lights up green and the display changes to the following
screen:
The display (page 5, g. 1/5) shows the remaining therapy me and the emied
energy dose rate in Joule. The end of the rst line displays the mode selected. The
selected therapy me now counts backwards and the energy dose rate changes
in line with the selected laser power and the elapsed therapy me, according to
the formula “Energy dose rate (Joule) = Laser power (mW) x Therpay me (sec.)”.
An audible signal sounds while the laser output is acve.
Treatment ends automacally aer the selected therapy me has elapsed or
when the selected energy dose has been achieved. The end of the therapy is
indicated by a short triple sound signal.
Treatment can be terminated manually at any me by pressing the LASER key
(page 4, g. 1/4).
Once the therapy has ended, the screen changes back to the “Inial sengs”
display.
page 14 of 29

8. Applicaon
To achieve opmum therapeuc success, please
observe the following:
 To keep reecon losses as small as possible,
the skin must be free of grease and the laser
shower PowerTwin21+ must be applied vercally
to the skin .
 A general rule that applies to all treatments is the principle of gradually
increasing the dosage. Inial treatments should last no longer than 2 minutes.
 Maximum treatment me per paent is 10 min. Aer 10 min. irradiaon, the
unit turns o automacally.
 When doing laser treatments are done in CW-Mode in quick sucession (only
short pauses), rising temperature of the laser diodes take place. Reaching an
internal temperature of <55° the mode is switched automacally to mul-
frequency mode. The temperature symbol on the display will inform you
(page 22)
 During laser emission mini fans will see to an improved removal of heat. The
fans shut o when the laser emission is terminated.
 When doing connuous laser treatments in CW mode at maximum output, or
treatments close together, the internal temperature may increase above 60°C.
The device will then switch o automacally. This will be indicated in the display
by “temperature auto o”. The device can only be switched on again, aer the
diodes were able to cool down.
 Move the laser shower PowerTwin21+ slowly and evenly across the surface of
the skin. The distance to the skin should be only a few mm when doing it.
 Do not acvate the unit unl you are in the treatment posion.
 Apply ointments, loons and creams only aer a laser treatment.
page 15 of 29
Note: When no laser applicaon is taking place, the unit turns “OFF”
automacally if it is not operated for a connuous period of ≥10 minutes
(AUTO OFF).

g. 9.1 g. 9.2
g. 9.4
g. 9.3
9. Replacing the adapters
The laser shower adapters may be replaced depending on their applicaon. Two
adapters are available. A change may also be necessary, if one needed cleaning.
 Disconnect the lasershower PowerTwin21+ from the mains.
 Put the PowerTwin21+ on a at surface, as illustrated here, and press the
adapter ring gently against the housing with both hands (page5, Abb. 9.1).
 Turn the adapter ring just slightly counter-clockwise unl it is in the posion
shown in the next illustraon (g. 9/2).
 In this posion you can remove the adapter ring (g. 9.3).
 When aaching the adapter ring, make sure that the detents are inserted into
the proper recesses. Press the adapter ring gently against the housing with both
hands and turn clockwise. The detents are now back in their inial posion
(g. 9/4).
 Reconnect the PowerTwin21+with the mains.
Please note:
 Do not touch the green circuit board with the green laser diodes.
 Don't store the laser shower PowerTwin21+ without the adapter being
aached.
 Touch, press and turn the adapter ring only at the green housing.
Avoid pung pressure on the comb ps.
 Do not replace the adapter in a dusty, dirty or wet environment.
page 16 of 29

10. Care and Maintenance
To ensure safe and hygienic operaon, please observe the following:
To ensure safe and hygienic operaon, please observe the following:
 To protect the PowerTwin21+, in parcular to avoid damage to the protecve
glass/the comb ps, store it e.g. in the case that can be purchased oponally.
For temporary storage, it may also be placed on a matching acrylic plate.
 The laser beam outlet must be cleaned with a so cloth/coon using 70 %
ethanol (medical alcohol) every me it has come in contact with skin or when
changing paents.
 Do not expose the unit to direct sunlight.
 The housing may be cleaned with a mild detergent. Before you start cleaning,
disconnect from the mains.
 Unauthorized repairs or modicaons of the unit may put users or paents in
jeopardy. Therefore repairs may only be performed by the manufacturer or by
persons who have been authorized by him. Illicit opening will void the warranty.
When repair is required, please contact the Service Department.
 The laser shower should only be used in indoors at moderate temperature.
11. Safety informaon
Please strictly observe the instrucons in the operang manual and heed the
warnings.
 The laser shower must be protected against unauthorized users with the key
pin
 The lasershower PowerTwin21+ must only be operated by specialized medical
of the medical sta in doctors' oces, that have been trained in handling the
unit. Treatment must be supervised at all mes
 Due to its wavelength, laser radiaon is not or only very weakly visible.
Do not look into the laser beam outlet and do not point the laser beam into
the eyes of other persons, even if the eyes are closed.
 The safety distance when looking straight into the beam at maximum output
(21 x 50 mW – cw) is 80 inches (200 cm). If used incorrectly, lasers can
damage the eyes, especially if the distance between the eye and the laser beam
outlet is shorter than the safety distance.
 Please make sure that no mirrors or other reecng surfaces are located
within the safety distance from the PowerTwin21+ (reecon of laser light).
page 17 of 29

 User and paent must always wear laser protecon glasses! The protecon
level >805-825 DIR LB4)
 When treang paents with highly pigmented skin, moles or taoos, the
treated skin area may be heated unintenionally. Absolutely avoid a direct
irradiaon with skin contact or from a distance of less than 2 cm (0.8 inch) to
the treated area. Minimum distance to skin >2 cm (0.8 inch), keep the applicator
in moon. When using an output of >50mW, do not use CW mode.
 The PowerTwin21+ must only be switched on when it is in the treatment
posion. When the treatment posion is changed, the area laser must be turned
o and only be turned on again when it is in the new treatment posion. Turn
o the PowerTwin21+ aer the treatment and pull the key pin (page 4,
g. 1).
 If the PowerTwin21+, the power cord, the connecng or power plug show any
signs of external damage, the laser shower PowerTwin21+ may no longer be
operated and must be returned to the manufacturer.
 In case the PowerTwin21+ cannot be switched o, or the display fails, please
remove the power supply immediatly and contact the service department.
 Magnec and electric elds as well as ionizing radiaon may inuence the
funconing of the unit. For this reason you should not operate near devices
which generate large electromagnec elds or ioninzing radion, such as X-ray
machines or diathermy equipment.
 Don't use the PowerTwin21+ in hospitals near acve HF surgical equipment
and RF shielded rooms with magnec resonance imaging systems, where the
intensity of electromagnec disturbances is high.
 Do not operate the unit in rooms which are subject to the risk of explosion.
 The manufacturer is only responsible for the safety and reliability of the
product, if the laser unit is used in accordance with the
operang instrucons. The PowerTwin21+ is subject to the WEEE
Direcve (Waste of Electrical and Electronic Equipment)
2012/19/EU and must not be disposed of in domesc waste.
 If you put the PowerTwin21+ permanently out of operaon, please
let us know. The manufacturer only is reliable for safety and reliability if the
laser device is being used in accordance with the user's manual.
page 18 of 29

12. Manufacturer's labels and warning signs
Informaon on serial number starng with LDU8021RE:
digits 1-4 starng from the right: connuous number in year of manufacture
digits 5-6 starng from the right: year of manufacture (18 = 2018)
Manufacturer's nameplate
This warning sign indicates that the unit is
a class 3B laser device which emits laser
light of the specied wavelength and at
the specied power output.
This warning sign marks the laser
beam outlet of the unit. Do not
look into the laser beam outlet
without laser protecon glasses.
Laser
Aperture
page 19 of 29
Protect against
moisture
Storage-/Transport temperature
Protect against heat Storage-/Transport huimidity
Recycling in general Storage-/Transport air pressure

12. Manufacturer's labels and warning signs
Informaon on serial number starng with LDU8021RE:
digits 1-4 starng from the right: connuous number in year of manufacture
digits 5-6 starng from the right: year of manufacture (18 = 2018)
page 20 of 29
12.1 Denion of symbols of laser shower PowerTwin21 Laserdusche
Conformity to European medical device direcve
93/42/EWG
Follow user's manual
Applicaon type BF
Manufacturer
Meets WEEE guideline (waste of electrical and electronic equip-
ment) 2012/19/EU and must not be disposed of in the domesc
waste.
Distributor
!
12.3 Transport-/Lagersymbole
12.2 Denion of symbols on AC adapter
Manufacturer date (only AC adapter) in form YY-MM
Device of laser protecon class II (only AC-Adapter)
Direct current (only AC Adapter)
AC/DC (only AC Adapter)
Aenon (only AC Adapter)
Protect against
moisture
Storage-/Transport temperature
Protect against heat Storage-/Transport huimidity
Recycling in general Storage-/Transport air pressure