Chair E 2 Operating Instructions Index 05 Oct 2017

Table of contents 1.0 1.1 1.2 1.3 1.4 1.5 1.6

Introduction...3 Notes on operating instructions...3 Intended use...3 Function...3 Explanation of pictures and symbols...4 Scope of supply... 5 Transport and storage...5

2.0

For your safety...6

3.0 3.1 3.2 3.2.1 3.3

Setting up and starting up...7 Setting up...7 Starting up...7 Front view...7 Electrical connection...7

4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.8

Operation...8 Positioning the patient...8 Adjusting the seat height...8 Rotating the upper part of the chair...9 Rotating the seat...9 Adjusting the manual backrest...10 Adjusting the electric backrest...10 Adjusting the arm rests...10 Adjusting the head rest...11 Foot rest...11 Chassis (optional)...11

5.0 5.1

5.3 5.4

Cleaning and care...12 General information on cleaning and disinfection...12 Cleaning and disinfection of the device surface and upholstery...12 Recommended surface disinfectants...12 Recommended disinfectants for the upholstery...12

6.0 6.1 6.2

Maintenance and Service...13 Replacing the fuse...13 Sending in the device...13

7.0

Troubleshooting...13

8.0 8.1 8.2

Accessories and spare parts...14 Accessories...14 Spare parts...14

9.0

Technical data...15

10.0

Disposal...16

11.0

Notes on EMC...17

5.2

Further information, accessories, consumables and spare parts are available from:

ATMOS

MedizinTechnik GmbH & Co. KG Ludwig-Kegel-Straße 16 79853 Lenzkirch Germany Phone: +49 76 53 689-0 Fax: +49 76 53 689-190 +49 76 53 689-493 (Service Centre) [email protected] www.atmosmed.de

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1.0

Introduction

1.1 Notes on Operating Instructions These operating instructions contain important notes on how to operate the ATMOS® Chair E 2 safely, correctly and effectively. Their reading helps to avoid risks, and also to reduce repair costs and downtimes. This increases, amongst other things, the reliability and service-life of the device. These operating instructions serve not only for new operating personnel to be instructed in its use, but also for use as a reference manual. Reprints (also in extracts) only with permission in written form by ATMOS. These operating instructions must always be kept available near the device. Care and period tests in conjunction with professional execution provide for operational safety and readiness for use of your ATMOS® Chair E 2 and are therefore a must besides regular cleaning. Repair work and period tests may be carried out only by expert personnel authorised by ATMOS. By applying only original spare parts you will have the guarantee that operational safety, readiness for work and the value of your ATMOS® Chair E 2 will be preserved.

• The product ATMOS® Chair E 2 bears CE marking according to the EC Directive of the council for medical products 93/42/EEC and meets the basic requirements of Appendix I of the directive. • The product ATMOS® Chair E 2 complies with all applicable requirements of the Directive 2011/65/EC restricting the use of certain hazardous substances in electrical and electronic equipment (“RoHS”). • The declaration of conformity and our general standard terms and conditions can be obtained on our website at www.atmosmed.com. • The quality management system applied at ATMOS has been certified according to international standards EN ISO 13485. • Prior to start-up please peruse chapter 2.0 „For your safety“, in order to be prepared for any possible dangerous situations.

1.2 Intended use Name: ATMOS® Chair E 2 Main function: This patient chair enables the optimum positioning of the patient with regard to height and access. Medical indications / application: Positioning of the patient during standard ENT examinations and / or therapy. Specification of the main function: • Electrical height adjustment via foot switch from 58.5 cm up to 78.5 cm • Upper part of the chair rotatable by 360 ° with lock on both sides; with electric backrest 300 ° • Seats with integrated handles can be separately swivelled to the right and left by 90°. • Infinitely variable inclination of the backrest from +7° forward to the horizontal position (mechanical or electric) • Height adjustable and detachable headrest • Armrests can be folded up (individually) • Foot support, can be swivelled synchronously with the backrest Application organ: Positioning of the patient Application time: Temporarily (up to 60 minutes) Application site: In clinics and practices for ENT doctors and phoniatricians. The application of the doctor’s chair must be executed by medically trained persons only. Contraindications: None

The product is: active Sterility: Not necessary Single-use product / reprocessing: No single use product

1.3 Function The patient chair is equipped with an electromotive height adjustment from 58.5 cm to 78.5 cm. The seat height adjustment is controlled by a foot switch. On request the Auto - Down (homing) function drives the chair automatically to its lowest position. The upper part of the chair can be fixed in any position by means of a locking brake with locking levers attached on both sides. Optionally it is possible to move the patient chair effortlessly by means of the integrated chassis. The high backrest is steplessly adjustable from approx. 7° to the horizontal. The height adjustable neck support can be easily removed. The seat is separately rotatable by 90 ° to the right and left and is easily fixed by a ball screening in central and end position.

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1.0

Introduction

1.4 Explanation of pictures and symbols Short cuts / symbols contained in these operating instructions Follow the arrows

■

General information

Move, plug... in this direction

Please press where dot indicates

●

Numeration

Turn, shift ... in this direction

Please read, important information

→

Sub-numeration

Replace

Check

click

Graphic symbols contained in these operating instructions

Warning, special diligent notice

!

Symbols of ATMOS® Chair E 2

Degree of protection type B

REF

Order number This product complies with the relevant requirements of EU Directives

~

4

Alternating current

)) Important information

Engage, check correct fit

1.0

Introduction

1.5 Scope of supply Prior to dispatch, the ATMOS® Chair E 2 was subjected to an extensive functional test and was carefully packed. Nevertheless, please compare the contents of the shipment on completeness immediately upon receipt (see delivery note).

Basic device

Power cable

Operating Instructions

1.6 Transport and storage • After the transport of the device in temperatures below 0°C or prior to first start up it should be kept at room temperature for at least six hours. If the device is not acclimatized it may not be used as damages to the electronic components may be the result. • Only transport the device in a shipping carton, which is padded and offers sufficient protection. • If damage occurs during transport: -- Document and report the transport damage. -- Send the device to ATMOS (Chapter „6.2 Sending in the device“ on page 13).

Ambient conditions: • Transport / storage: -- -10...+50°C; -- 30...95 % air humidity without condensation -- at an air pressure of 500...1060 hPa • Operation: -- +10..+35°C; -- 30...95 % air humidity without condensation -- at an air pressure of 500...1060 hPa

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2.0

For your safety

!

For your safety • The Chair E 2 has been designed in accordance with IEC 601/ EN 60601. The equipment conforms to VDE Safety Class I and must only be connected to a properly installed earthed socket. • The Chair may only be used in supervised operation (IEC 60601-1 / EN 60601-1). • Prior to first start up, check whether the supply voltage indicated on the chair corresponds to the value of your local power supply. • For mains supply, only use the power cable supplied (or an equivalent one). • Check proper assignment when assembling countryspecific connections: -- green / yellow: protective conductor -- blue: neutral conductor -- black or brown: phase • Prior to first starting up, all connecting leads must be checked on damage. Damaged cables must be replaced. • To disconnect the chair from the power supply, first remove the plug from the safety connection socket. Then disconnect the connection line from the chair. Never touch plug or cables with wet hands. • Please observe the ambient conditions stated in the technical data (chapter 7.0).

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• The Chair E 2 is not designed for the use in medical areas with an explosion hazard. Explosion-hazardous areas may be caused by the use of flammable anaesthetics, skin cleansing products and skin disinfectants. • Ensure that the patient sits in the middle of the seat. A constant unilateral strain on the seat can damage the surface. • The user must be familiar with the operation of the chair. • ATMOS is not liable for personal injury and damage to property if -- no original ATMOS parts are being used, -- the advice for use in these operating instructions is not being observed. • Please note: A medical insulating transformer with earth leakage monitor or any similar safety system acc. to EN 60 601-1 is required, if several devices are connected over one common power supply. The transformer must correspond to the power consumption of all the devices to be connected. • The electric motor is protected by an integrated thermal protection switch. After 1.5 minutes of continued operation, the motor requires a cool down period of approx. 8.5 minutes. If the thermal protection switch is activated, the motor requires a cool down period of approx. 20 minutes.

3.0

Setting up and starting up 3.1 Assembly • Always place the device on a level, safe surface. Mains voltage and fuse: Mains voltage: 230 V / 50 Hz (120 V / 60 Hz) Fuse: • Thermal fuse: 3 A (230 V) • Thermal fuse: 6 A (120 V)





3.2 Starting up • Position the chair at the allocated space. Any floor unevenness must be compensated for. • Check that the upper part of the chair can rotate freely. • Peruse safety information in part 2.0 prior to starting up the device for the first time. • Finally, connect power cable.

3.2.1 Front view





 

  Fig. 1.

1

Individually adjustable headrest

2

Lever for infinitely variable synchronous adjustment of the backrest, arm rests and foot support

3

Arm rests can be folded backwards

4

Rotary seat

5

Lever for arresting the rotatable upper part of the chair

6

Swivelling foot support

7

Foot switch for adjusting the seat height

3.3 Electrical connection The ATMOS® Chair E 2 is supplied with a power cable and IEC connection. The power cable is plugged into the IEC connection on the rear side of the base and is connected to a properly installed earthed socket. The electrical connection values (voltage and nominal frequency) as well as the data for fuses can be found on the type plate above the connecting socket. Disconnection from the power supply is only possible by pulling the power plug! )) There is no indication that the device is powered! )) In the case of non-use, service and repair work and cleaning, the chair must be disconnected from the power supply by pulling the power plug.

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4.0

Operation

!

The height adjustment is controlled via the two foot switch buttons marked with arrows. The left foot switch button is for the upwards movement, the right for the downwards movement. The arm rests can be folded backwards; that makes it easier for handicapped persons to be transferred from the wheelchair to the examination chair. The backrest inclination can be controlled by means of the control elements attached to the side of the backrest. Arm rests, foot support and backrest are coupled for synchronous movements. The electric motor is protected by an integrated thermal protection switch. After 1.5 minutes of continued operation, the motor requires a cool down period of approx. 8.5 minutes. If the thermal protection switch is activated, the motor requires a cool down period of approx. 20 minutes.

4.1 Positioning the patient Ensure that the patient sits in the middle of the seat. A constant unilateral strain on the seat can damage the surface.

4.2 Adjusting the seat height The seat height adjustment is controlled by the 2 foot switches (fig.2): = Up = Down Furthermore, the ATMOS patient chair features an “Auto – Down (homing)” function, driving the seat down to its lowest level after a short tap on the foot switch. Pressing the right foot switch for less than 0.5 seconds will move the chair to home position. To stop the movement, just briefly tap the button again.

Fig. 2.

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4.0

Operation 4.3 Rotating the upper part of the chair The upper part of the chair with the patient can be completely rotated after having loosened the brake with the locking lever ( 1 , fig. 3). The upper part with the patient can then be rotated in the desired direction. If the brake is only slightly fixed the chair can be rotated without loosening the brake. The rotating angle is limited for chairs with an electric backrest adjustment. In this case the chair can be rotated by 150° either to the right or to the left.



Fig. 3. 1 Locking lever

4.4 Rotating the seat The seat with the patient can be rotated independent of a backrest movement. To do so, adjust the lateral locking lever ( 1 , fig. 4) beyond its central position. The seat can then be rotated 90° to the left or 90° to the right. When the locking lever is brought into the central position, the seat surface is easily fixed both in position 90° to the left and 90° to the right, and engages in the central position.

 Fig. 4. 1 Locking lever

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4.0

Operation 4.5 Adjusting the manual backrest



Fig. 5. 1 Lever element

• Press lever element ( 1 , fig. 5) downwards. • Adjust backrest to the desired position. • Release lever element which will then return to its initial position. • Backrest and foot support are arrested. Arm rests, base part and back rest are coupled for synchronous movements.

4.6 Adjusting the electric backrest



Arm rests, base part and back rest are coupled for synchronous movements. The ATMOS® Chair E 2 can optionally be equipped with an electric backrest. The adjustment is possible both by means of a foot switch ( 1 , fig. 6), as well as by rocker switches attached to the side of the backrest. When the backrest is raised from the horizontal or the backstop, a first holding point is installed when the backrest is in the vertical position. To move the backrest to the 10° forward position, press any of the switches again.

Fig. 6. 1 Foot switch

4.7 Adjusting the arm rests The arm rests (fig. 7) can be individually folded backwards.

Fig. 7. Arm rests

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4.0

Operation 4.8 Adjusting the head rest The head rest (fig. 8) can be brought into a lower position by simply pulling the retaining strap into a lower position or by pushing it into a higher position. To remove the headrest, the retaining strap must be pulled out completely from the backrest.

Fig. 8.

Headrest

4.9 Foot rest If required, the foot rest can be folded down (fig. 9).

4.10 Chassis (optional)

!

Fig. 9.

Foot rest

  Fig. 10.

Do not transport any weights or persons on the chair. The chair may be moved as soon as the red LED light illuminates. Clearance height: ca. 15 mm. Extend the chassis: • Move the chair upwards illuminates ( 2 , fig 10). • Push the lever to the left chassis. • Move the chair downwards illuminates ( 1 , fig 10). The chair can now be moved.

until the green LED ( 4 , fig. 12) to extend the until the red LED

Retract the chassis: • Move the chair upwards until the green LED illuminates ( 2 , fig 10). • Push the lever forward ( 3 , fig. 11) to retract the chassis. • Move the chair to the desired position / . LEDs (fig. 10) 1 Red: Extend the chassis, chair can be moved. 2 Green: Lever can be adjusted.

Fig. 11.



Fig. 12.



Lever position (fig. 11 + 12): Only adjust the lever when the green LED is illuminated. Otherwise the chair can be damaged. 3 Forward: Retract the chassis 4 Left: Extend the chassis

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5.0

Cleaning and care

5.1 General information on cleaning and disinfection Prior to cleaning Medical chairs like the ATMOS® Chair E 2 must always be operational and reliable. Therefore, we recommend: Prior to each use:

if required

)) The described measures relating to cleaning and disinfection resp. sterilisation do not replace the relevant instructions which must be adhered to prior to operation! • For disinfection, you may use all surface and upholstery disinfectants listed in chapter 5.3 and 5.4 “Recommended disinfectants”.

)) Always observe the concentration specifications and instructions by the respective manufacturer! • Do not use -- Disinfectants which contain organic or inorganic acids or bases as they could cause corrosion damage. -- Disinfectants containing chloramides, phenol derivatives or anionic tensides, as these may cause stress cracks in the material used for the housing of the unit.

5.2 Cleaning and disinfection of the device surface and upholstery

!

!

If liquid has penetrated the device, it may not be operated again until it has been checked by the authorised customer service centre. • The surface of the ATMOS Chair E 2 is resistant against all the recommended surface disinfectants stated in chapter 5.3 and 5.4. Nevertheless after a longer period of use discolouration could occur. Polar solvents (e.g. acetone or chlorinated hydrocarbons (CC)) may not be used for cleaning and disinfection. • Disconnect the power plug from the power supply prior to cleaning and disinfecting the device surface. • The device itself can be wiped off with a moist (not wet) cloth. • Substances such as blood must be removed immediately to prevent stains. Do not use aggressive or abrasive cleansing agents. For the upholstery standard dry foam may be used. Treatment with a commonly used care product for artificial leather is recommended once a week in order to keep the upholstery soft and smooth.

5.3 Recommended surface disinfectants The surfaces of the ATMOS® Chair E2 can be cleaned / wiped with disinfectants containing the following active ingredients: • QAV (quaternary ammonium compounds)

5.4 Recommended disinfectants for the upholstery Disinfectant Green & Clean SK

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Ingredients Di alkyl dimethyl ammonium chloride Alkyl dimethyl ethyl benzyl ammonium chloride Alkyl dimethyl benzyl ammonium chloride

in 100 g Manufacturer < 1 g Metasys, Rum (Austria) <1g <1g

6.0

Maintenance and Service

Maintenance, repairs and period tests may only be carried out by persons who have the appropriate technical knowledge and are familiar with the product. To carry out these measures the person must have the necessary test devices and original spare parts. ATMOS recommends: Work should be carried out by an authorized ATMOS service partner. This ensures that repairs and testing are carried out professionally, original spare parts are used and warranty claims remain unaffected. The ATMOS® Chair E 2 is maintenance-free except for a possible fuse change (see section 6.1). Nevertheless, should a malfunction occur, please inform the authorized ATMOS customer service immediately. • At least every 24 months a repeat test of the electrical safety should be performed according to IEC 62353. • ATMOS recommends an inspection according to the manufacturer‘s specifications.

6.1 Replacing the fuse

6.2 Sending in the device • Remove and properly dispose of consumables. • Clean and disinfect the product and accessories according to the operating instructions. • Place used accessories with the product. • Fill in the form QD 434 „Delivery complaint / return shipment“ and the respective decontamination certificate. )) This form is enclosed to each delivery and can be found at www.atmosmed.com. • The device must be well padded and packed in suitable packaging. • Place the form QD 434 „Delivery complaint / return shipment“ and the respective decontamination certificate in an envelope. • Affix the envelope to the outside of the package. • Send the product to ATMOS or to your dealer.

)) Before replacing the fuse, unplug the power plug. • To open the fuse holder turn counter clockwise. • Exchange the fuse. • To close the fuse holder, turn clockwise.

7.0

Troubleshooting

Error indication

Possible cause

Remedy

Device does not start

• Power plug is fitted badly

• Check connection at wall socket

• No mains voltage

• Check main fuse • Check power plug on perfect fit at the device

• Defective fuse

• Exchange of fuse

Should a malfunction still occur, please inform the authorized ATMOS customer service immediately.

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8.0

Accessories and spare parts REF

8.1 Accessories Child seat

8.2 Spare parts

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On request

9.0

Technical data

Voltage

230 V~ ± 10 %; 50 Hz Special voltage:120 V~ ± 10 %; 60 Hz

Current consumption

2.5 A (approx. 3.1 A with the additional electrical back-rest adjustment)

Power consumption

520 VA (approx. 700 VA with the additional electrical backrest adjustment)

Fuse

3.15 A T (230 V~)

Operating time

1.5 min operation, 8.5 min rest period

Seating surface

length: 490 mm, width: 480 mm

Seat height

585 mm bis 785 mm

Vertical lift

200 mm

Vertical speed

13 mm/sec.

Lifting capacity / load

150 kg

Height adjustment

200 mm (double: “lifting”)

Rotation

360° without detent With the option electrical backrest: 300° (150° right / 150° left) without detent

Height of backrest

900 mm

Backrest inclination

+ 7 ° bis -90 ° (horizontal position)

Protective earth conductor resistance Earth leakage current Patient leakage current Housing leakage current

- - - n.c. < 0.1 mA

Ambient conditions Transport / storage

-10...+50 °C 30...95 % air humidity without condensation at an air pressure of 500...1060 hPa

Operation

+10...+35 °C 30...95 % air humidity without condensation at an air pressure of 500...1060 hPa

Dimensions HxWxD

1490 mm x 630 mm x 930 mm

Weight

102 kg with the option electrical backrest: 104 kg

Weight with movable base plate

110 kg with the option electrical backrest: 112 kg

Protection class(EN 60601-1)

I

Period tests

Repeat test of the electrical safety every 24 months. Recommended: inspection according to the manufacturer‘s specifications.

Degree of protection

Type B

Type of protection

IP 20

Classification acc. to Appendix IX EC Directive 93/42/EEC

I

CE marking

CE

Applied standards

EN 60601-1: EN 60601-1/-2:

UMDNS code

10-794

REF

535.0000.0 534.0000.4 (Special voltage)

Issue of technical data: 09.12.2014

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10.0 Disposal • • • • •

The ATMOS® Chair E 2 does not contain any hazardous materials. The housing is recyclable. Device and accessories must be decontaminated prior to disposal. Pay attention to a careful separation of the different materials. Please observe national disposal regulations (e.g. waste incineration).

Disposal within the EC The device described above is a high-quality medical product with a long service life. After its life cycle it must be disposed of professionally. According to the EC directives (WEEE and RoHS) the device may not be disposed of in domestic waste. Please observe existing national laws and rules for disposal of old devices in the respective country. Disposal within the Federal Republic of Germany In the Federal Republic of Germany the law for electrical devices (ElektroG) regulates the disposal of electrical devices. In order to guarantee a proper disposal of your old device, please either pass on your old device to your specialised dealer or send it directly to ATMOS MedizinTechnik for a professional disposal.

Before disposal respectively before transport all parts, which came into contact with the patient must be thoroughly cleaned, disinfected. The device surface must be disinfected.

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11.0 Notes on EMC • Medical electrical equipment is subject to special precautions with regard to EMC and must be installed acc. to following EMC notes. • Portable and mobile HF communication facilities can influence medical electrical equipment. • The use of other accessories, other transducers and cables than stated may lead to an increased emission or a reduced interference immunity of the equipment or system.

11.1 Guidelines and Manufacturer's Declaration - Emissions The ATMOS® Chair E 2 is intended for use in the electromagnetic environment specified below. The customer or user of the ATMOS® Chair E 2 should ensure that it is used in such an environment. Emissions Test

Compliance

Electromagnetic Environment - Guidance

Harmonic emissions according to IEC 61000-3-2

Class A

The ATMOS® Chair E 2 is suitable for use in all establishments, including domestic, and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.

Voltage fluctuations/flicker according Corresponds to IEC 61000-3-3

The device may not be used directly next to other devices or piled up with other devices. If operation next to or piled with other devices is necessary, please watch the device to check its intended operation in this arrangement.

11.2 Guidelines and Manufacturer's Declaration - Immunity The ATMOS® Chair E 2 is intended for use in the electromagnetic environment specified below. The customer or user of the ATMOS® Chair E 2 should ensure that it is used in such an environment. Immunity Test

IEC 60601- Test Level

Compliance Level

Electromagnetic Environment - Guidance

Electrostatic discharge (ESD) according to IEC 61000-4-2

± 6 kV Contact

± 6 kV Contact

± 8 kV Air

± 8 kV Air

Floors should be made of wood or concrete or tiled with ceramic tiles. If floors are synthetic, the relative humidity should be at least 30 %.

Fast electrical transient/ burst IEC 61000-4-4

± 2 kV Mains

± 2 kV Mains

± 1 kV I/Os

± 1 kV I/Os

1 kV Common

1 kV Common

2 kV Differential

2 kV Differential

3 A/m

Inapplicable

Surges IEC 61000-4-5

Magnetic field at power frequency 50/60 Hz acc. to IEC 61000-4-8

The quality of the supply voltage should correspond to a typical commercial or hospital environment. The quality of the supply voltage should correspond to a typical commercial or hospital environment.

Power frequency magnetic fields should be that of a typical commercial or hospital environment.

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11.0 Notes on EMC Immunity Test

IEC 60601- Test Level

Compliance Level

Electromagnetic Environment - Guidance

Voltage Dips / Drop out IEC 61000-4-11

< 5 % UT (> 95 % Dip of the UT for 0.5 Cycle)

< 5 % UT (> 95 % Dip of the UT for 0.5 Cycle)

40 % UT (60% Dip of the UT for 5 cycles)

40 % UT (60% Dip of the UT for 5 cycles)

The quality of the supply voltage should correspond to a typical commercial or hospital environment. If the user of the ATMOS® Chair E 2 demands continued function even in case of interruptions of the energy supply, it is recommended to supply the ATMOS® Chair E 2 from an uninterruptible current supply or a battery.

70 % UT (30% Dip of the UT for 25 cycles)

70 % UT (30% Dip of the UT for 25 cycles)

< 5 % UT (> 95 % Dip of the UT for 5 s)

< 5 % UT (> 95 % Dip of the UT for 5 s)

NOTE UT is the mains alternating current prior to application of the test levels.

11.3 Guidelines and Manufacturer's Declaration - Immunity The ATMOS® Chair E 2 is intended for use in the electromagnetic environment specified below. The customer or user of the ATMOS® Chair E 2 should ensure that it is used in such an environment.

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Immunity Test

IEC 60601- Test Level

Compliance Level

Conducted RF IEC 61000-4-6

3 Veff 150 kHz to 80 MHz

3V

Radiated RF IEC 61000-4-3

3 V/m 80 MHz to 2.5 GHz

10 V/m

Electromagnetic Environment - Guidance Portable and mobile communications equipment should be separated from the ATMOS® Chair E 2 including the cables by no less than the distances calculated/listed below. Recommended distances: d = 3.5/3 √ P d = 3.5/10 √ P d = 7/10 √ P where „P“ is the max. power in watts (W) and d is the recommended separation distance in meters (m). Field strengths from fixed transmitters, as determined by an electromagnetic site (a) survey, should be less than the compliance level (b). Interference may occur in the vicinity of equipment containing following symbol:

11.0 Notes on EMC NOTE 1 With 80 MHz and 800 MHz the higher frequency range applies. NOTE 2 These guidelines may not be applicable in all cases. The emanation of electromagnetic waves is affected by absorption and reflection of buildings, objects and people. a The field strength of stationary transmitters, such as base stations of cellular phones and mobile terrain radio equipment, amateur radio transmitters, cbm broadcast and TV stations cannot be predestined exactly. To determine the electromagnetic environment in regard to stationary transmitters, a study of the location is to be considered. If the measured field strength at the location where the ATMOS® Chair E 2 is used exceeds the above compliance level, the ATMOS® Chair E 2 is to be observed to verify the intended use. If abnormal performance characteristics are noted, additional measures might be necessary, e. g. a changed arrangement or another location for the ATMOS® Chair E 2 b Within the frequency range of 150 kHz to 80 MHz the field strength should be below 3 V/m.

11.4 Recommended safety distance between portable and mobile RF Communications equipment and the ATMOS® Chair E 2 The ATMOS® Chair E 2 is intended for use in electromagnetic environment in which radiated disturbances are controlled. The customer or user of the ATMOS® Chair E 2 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF Communications equipment and the ATMOS® Chair E 2 as recommended below, according to the maximum output power of the communications equipment. Safety distance, depending on transmit-frequency m Power of transmitter W

150 kHz to 80 MHz d = 3.5/3 √ P

0.01

0.12

0.1 1

80 MHz to 800 MHz d =3.5/10 √ P

800 MHz to 2.5 GHz d = 7/10 √ P

0.035

0.07

0.37

0.11

0.22

1.17

0.35

0.7

10

3.7

1.1

2.2

100

11.7

3.5

7

For transmitters for which the maximum nominal output is not indicated in the above table, the recommended safety distance d in meters (m) can be determined using the equation belonging to the respective column whereas P is the maximum nominal output of the transmitter in watts (W) acc. to manufacturer's specification. NOTE 1 With 80 MHz and 800 MHz the higher frequency range applies. NOTE 2 These guidelines may not be applicable in all cases. The emanation of electromagnetic waves is affected by absorption and reflection of buildings, objects and people.

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