ATMOS S-351 Suction Pump Service Manual
Contents
1. B z o o ke e 2 p o c 5 o o x N R22 R24 1 cs 1 byer Mp SENSOR dll LT1013 93LC66B 1232 100n ce oodyr 16 9 09kF R3 R4 SR2 ici a 056 5 xci 100nF R1 3 01 X2225CAAA B di NM N B 2 L1 GMSTBA2 5 2 G 7 62 LM2574 GMSTBA2 5 3 G 7 62 1000yF 35V SI alt 0 4AT Fassung Fig 14 Components of control board ATMOS S 351 ATMOS S Natal Issue 11 September 2002 34 Annex Plans LLS D Qs uv va 9z li us eznaow 9 ag 3 8 47 5 E RACON12 3 re O do 28 lt lt SXLNpoW duis xz Strip Modu 1x3 without middle contac LED LED LZNW vyesczLSIOW Fig 15 Display board ATMOS 351 ATMOS Natal Issue 1 August 2000 Annex Plans Ferrite gt lt connection trolley overflow exhaust starting e valve valve foot control sleeve E potential equalizing 008 0621 0 sleeve 444 0106 1 lt i 008 0452 0 main supply incl 7 Overflow left Display 444 0413 0 wire2. f N ATMOS XY MedizinTechnik for a better life ATMOS 351 ATMOS 351 Natal FO 04 ATMOS MedizinTechnik Ludwig Kegel Str 16 Tel 49 0 7653 6 89 0 atmos atmosmed de GmbH amp Co KG 79853 Lenzkirch Germany Fax 49 0 7653 6 89 190 www atmosmed de 2 0 General description 3 Valid operating instructions 3 Information on manufacturer 3 Exclusion of 3 For your safety 3 Installation e m 4 Unit function and construction of the unit 4 12 Functional description 5 Description of sub assemblies 5 FIOUSING rc 5 Collection jar system with hose connections and bacterial filter 5 Internal 6 Electronics sss 7 8 Allocation of wires to the plug 9 Test and measuring points 9 Service 10 Service Level 1 10 Service Level 2 10 12 Changing 13 15 Removal and fitting of the housing
3. 13 Removal of the pump module 13 Membrane and valve change 13 VIEW of pump coeno rto seta denn 14 15 Trouble shooting 16 General errors 16 Maintenance and repair 17 34 Test procedure 17 Visual inspection 17 Suction device setting locking 17 Electrical testing 18 19 Functional test of ATMOS S 351 20 23 Functional test of ATMOS S 351 Natal Vacuum 24 26 Functional test of ATMOS S 351 Natal SUCUION 27 29 7 0 8 0 9 0 9 1 10 0 Spare Parts 35 36 Technical Specifications 32 Conversion instructions 33 trt rr E CP xa ER Rau 33 Annex 34 38 fN General description Amos The ATMOS S 351 is a surgical suction unit which is used in medical ranges to remove bodily fluids secretions and rinsing fluids by means of a vacuum generated in the suction system The variants of the ATMOS S 351 are used in obstetrics during eye operations and for intermittent drainage 1 1 Valid operating ins
4. 5 Starting valve 3 Exhaust air valve i J FN 3 4 Pump 22 FT 2 Silencer L Connecting i nipple 8 9 13 Fan 12 a2 Buzzer NY 17 16 18 Pressure Display and key i sensor board 30 a 1 Mis 44 1 Mains input AP Processor board 23 29 22 Foot controller connection i WEM Overflow _ Overflow Ls 1 contacts contacts contacts right trolley left Fig 1 Block Diagram Unit function unit construction 3 1 Functional description The main part of the suction unit is the diaphragm type pump 4 The motor of the pump is controlled by the processor board 14 A pressure transducer 15 delivers the actual vacuum to the processor board 14 The pump 4 is driven until the desired final vacuum is shown in the safety glass and in the collection jar With the help of the vacuum generated liquid passes through the suction hose into the collection jar A level mo nitor overflow contacts 25 27 29 checks the resistance between double socket nipple and an electrode fitted in the collection jar lid If the resistance changes by the increasing liquid level in the collection jar the pump 4 is shut down and an acoustic signal is given by the buzzer 32 Only when the double socket nipple is removed and put into ano
5. Supplementary fan recognition e Connect end of the suction hose to the supplementary air valve Press extraction cup key in order to start automatic vacuum creation By pressing the gt key accelerate the creation of vacuum up until about 500 mbar is reached e Carefully open the supplementary air valve until the warning signal sounds and the LED flashes quickly e Close the supplementary air valve Vacuum decrease is equalised and the warning signal stops Accelerate vacuum creation by pressing the gt key until the counter upper left shows zero e Wait for the end vacuum to be reached and the signal End vacuum reached sounds e Carefully open the supplementary air valve until the vacuum has fallen to just under 600 mbar Now the warning signal sounds e Close supplementary air valve Vacuum decrease is equalised On reaching the end vacuum the warning signal stops e Ventilate by pressing the END key Function of arrow keys e Close the end of the suction hose so that it is airtight e Switch on the unit wait for vacuum to be created During the creation of vacuum e The creation of vacuum can be delayed with the key e The creation of vacuum can be accelerated with the gt key e Pressing the Max key will be ignored by the unit e Wait for the end vacuum to be reached After reaching the end vacuum e end vacuum target value can be reduced with lt key e The end vacuum target value can b
6. is connected to the contact element which is located in the vicinity of the round fan opening Setting Terminal voltage The voltage shown by the voltage measuring device shall be between 2 and 3V Without activation No trolley symbol must appear in the display Setting Trolley high The trolley symbol must appear in the display Setting Trolley low No overflow message must result the trolley symbol must appear in the display Setting Overflow high The overflow message must appear Setting Overflow low The overflow message must appear Setting Short circuit The corresponding short circuit message left right must appear Auto Standby function Activate auto standby Use the test environment from the vacuum regulation test After a maximum of 30 seconds with free flow the set must go into standby Wait 10 seconds After closing the end of the hose the unit must start within 5 seconds again Foot controller Set the target value to the maximum and connect the foot controller The foot controller bargraph must be adjustable from 0 to maximum Memory function Operate the set in Intermit mode Switch off unit and switch it on again after about 5 seconds When it is switched on again the ATMOS S 351 changes automatically into Phase 1 of the Intermit mode Operate the unit in suction mode Set any chosen vacuum value Switch off the unit and switch it on again after about 5 seconds When it is switched on again the A
7. of the data bus and some generated control signals The LEDs lie on one side at 5V and are on the other side pulled through a resistance with the controller to GND The push buttons are held with a Pull Up to 5V If a push button is pressed the level falls to GND and is registered by the controller e Block 12 Overflow contacts There are 3 overflow sources overflow right overflow left overflow trolley The overflow contacts are supplied from the reference voltage through a resistance The other side of the contact is read with an AD converter of the controller If the resistance between the contacts is reduced then the voltage at the AD converter increases and can be detected by the controller as safety glass resistance values must not be reduced e Block 13 Temperature monitoring A PTC temperature transducer is used to monitor the tempe rature in the ATMOS S 351 or its variant This temperature transducer is read by the internal AD converter of the con troller Thus the fan can be switched on when necessary or a high temperature reported The following voltage values are produced at the input of the AD converter Temperature Voltage 20 1 225 V 40 C 1 322V 60 C 1 412 V 80 C 1 496 V Table 3 Temperature values Block 14 CAN connection Is not used Block 15 Buzzer The buzzer for acoustic output of warning signals is switched with an FET from the controller Block 16 Foot contro
8. CE Mark Standards applied UMDNS Code REF basic unit without accessories ATMOS S 351 ATMOS S 351 Natal 1 bar 750 06 mm Hg 1000 hPa dependent on daily air pressure NN 1013 mbar ambient pressure 36 2 l min 90 kPa digital numeric resolution 10 mbar 10 mmHg 1 kPa and quasi analog via bar graph accuracy 2 electronically controlled magnetic valve up to 0 3 bar can be set between 0 2 bis 0 5 bar by service engineer 1 51 31 51 glass or polysulfone or 1 5 1 21 3 collection jar bracket for Medi Vac available 6mm dia 1 30 m long 10 mm dia 2 m long 230 V 50 Hz Special voltage 115 V 50 60 Hz 0 6A max 135 W 5m continuous operation T 1 0 foot switch 0 10 lt 500 pA NC lt 100 uA lt 10 uA 135 J s 43 9 dB A 1m as per ISO 7779 10 to 60 30 to 95 96 humidity non condensing at a pressure of 700 1060 hPa 10 to 40 30 to 95 humidity non condensing at a pressure of 700 1060 hPa 300 x 330 x 200 mm without trolley 840 x 490 x 520 with trolley 10 2 kg without collection jar without trolley Canadian Classification Type B Device Group General amp Plastic Surgery IPX 0 PNC7 9QBU Risk Class 2 IIb Description ASPIRATOR SURGICAL CE 0124 EN 60601 1 1990 A1 1993 A2 1995 EN ISO 10079 1 11 1996 EN 60601 1 2 1993 EMV EMC EN 30993 1994 EN 60601 1 4 07 1997 10 217 444 0405 0 444 0401 0 All valu
9. Remove the 6 fixing screws on the silencer sheet above the set c Pull the pump module out forwards d Remove if required the corresponding cable hoses 4 3 Membrane and valve change Remove the pipework from the pump Remove the four socket headed screws 1a or 1b of the pump head 2a or 2b Figure 8 Page 14 Clean the diaphragm disk 3 check whether the dia phragm 4 has fractures if necessary renew it For this remove the socket headed screw 5 Remember when assembling that the membrane is assembled in the lower dead point Figure 10 Page 15 Remove the three countersunk head screws 6a or 7a on the valve head the valve plates 6c or 7b and O rings 6b or 7c Clean valve heads and complete pump head with spirit fit new valve plates and O rings and assemble the aggregate in the reverse direction Figure 11 and Figure 12 Page 15 In addition the noise absorbing material must be changed In no case may the connecting rod be disconnected from the motor shaft since this can result in out of balance running or very bad behaviour on starting gt The right and left pump heads are different and must not be interchanged E gt care when assembling that the hoses are correctly connected ts For new pumps When fitting a new pump you must remove the stopper on the motor transducer connection 8 Then press the motor transducer into the hole Take care that the light fields lie
10. Unplug the foot controller 26 Maintenance repair 6 1 5 Functional test of ATMOS S 351 Natal Suction The following functions must be checked For the following functional test the accessories of the ATMOS S 351 shall be attached to the unit The end of the suction hose must be attached to the vacuum meter Switching on procedure e Switch unit off on e An audible beep should be heard e pressing the END key change into the suction mode Vacuum control e Check the vacuum indicator at 500 mbar The indicator must lie between 480 and 520 mbar The check should be carried out with standing vacuum that is to say the pump must not run closed system set control on 500 mbar e Note the vacuum measured Starting procedure e Check the starting of the set at 500 mbar and 800 mbar The set must start within seconds Check exhaust air valve e t must be possible to create vacuum with a closed system gt Test environment 1 51 secretion glass With a closed system switch over from a higher target value to a lower target value The vacuum must be reduced without opening the hose Test overflow use test equipment e Avoltage measuring instrument is used to check the polarity of the contact elements For this the bush of the test equipment that is marked with is connected to the voltage input V the bush of the test equipment marked with is connected to the reference entry 0 Com of the voltage
11. and displayed by the ATMOS S 351 or its variant Description of error Reaction of the ATMOS Possible sources of the S 351 or its variants error Key error Motor sensor Pressure sensor Temperature Overflow short circuit A key is jammed or is depressed for more than 7 seconds When the motor is switched on the rotation sensor gives no feedback after 4 seconds The pressure measured is outside the range If the temperature exceeds 85 C or falls below 5 C an error message is given which is only erased when the temperature falls below 80 C or rises above 0 If the contacts of the overflow are short circuited lt 100Q an error message is given Error codes The device goes into emergency operation error message is entered in the error memory The device goes into emergency operation error message is entered in the error memory The device goes into emergency operation error message is entered in the error memory An acoustic signal sounds every 10 seconds The high temperature symbol appears on the display The pump is switched off The error message is entered in the error memory Every 10 sec error message in the display as well as buzzer for 1 second The error message is entered in the error memory b Clear Errors When the errors have been needs to be cleared again function for this Key jammed Parts on the keyboard Motor does not turn Motor sensor
12. connected reserved Wiring diagram Atmos S351 230 Atmos S351 Natal 230V Atmos S351 Ophthal 230V ATMOS Medizintechnik GmbH Ludwig Kegel Str 16 79853 Lenzkirch Schww 444 0405 0 444 0401 0 38
13. defective or not correctly positioned Motor control defective Hose on the wrong sensor nipple Pressure sensor defective Pressure sensor not connected Temperature in the suction device is too high Ventilation slot blocked Surrounding temperature too high Fan does not work Temperature transducer defective Contacts shorted resolved the error memory Choose the clear errors connect the container and close the tube IO start abort Fig 4 Tightness test Start diagram C Test air tightness of system This can test to what extent the total system is tight Connect all hoses containers on the ATMOS S 351 or its variant to be tested Close the suction hose and start the test with the max key It takes place as shown on the adjacent display 11 Unit function unit construction System is tight Fig 6 Tightness test Result System is leaking Fig 7 Test hardware fN C NN The ATMOS S 351 or its variant begin to create vacuum Phase 1 as shown Then there is a waiting time Phase 2 wait The test result is shown with a box Then start a new test run with the Max key or end the function with the Stand by key Extraction cup key with ATMOS S 351 Natal The example shows a tight system d Test Hardware This function serves
14. measuring instrument Overflow contacts left right e Connection of the test equipment to the unit to be tested The terminal marked with should be connected to the upper contact element and the terminal marked with to the lower contact element e Setting Terminal voltage The voltage shown by the voltage measuring instrument lies between 2V and 3V e Setting Trolley low No overflow message shall be given e Setting Overflow high The overflow message must appear e Setting Overflow low The overflow message must appear e Setting Short circuit The corresponding short circuit message left right must appear 27 Maintenance and repair Amos NN Trolley overflows contact e Connect the test equipment to the unit to be tested The two terminals of the test equipment should be connected to the contacts of the trolley connection The terminal marked with is connected to the contact element which is in the vicinity of the round fan opening e Setting Terminal voltage The voltage value indicated by the voltage measuring instrument is between 2 and 3V e Without activating No trolley symbol appears in the display e Setting Trolley high The trolley symbol must appear in the display e Setting Trolley low No overflow message must appear the trolley symbol must appear in the display e Setting Overflow high The overflow message must appear e Setting Overflow low The overflow message mu
15. one above the other not side by side In addition the transducer must not be on the flywheel 13 4 4 View of pump Fig 8 View of the complete pump from the front Fixing screws pump head right Fixing screws pump head left Pump head Pump head left res Connection for motor transducer Starting valve Exhaust air valve Vacuum side Pressure side eeoeooc06066 Fig 9 View of pump from the valve side Start valve Exhaust air valve Vacuum connection Pressure connection to the damper 6060 069 0065 0 069 0064 0 40 Changing parts 40 Changingparts Fig 10 Pump without pump head Diaphragm 069 0036 0 O 069 0025 0 Q Fixing screw for diaphragm disk Fig 11 Pump head left internal view Fig 12 Pump head right internal view Fixing screws for valve plate Fixing screws for valve plate 69 0024 0 Valve 69 0020 0 valve 69 0020 0 69 0064 0 15 f N Trouble shooting Amos 5 1 General errors of the ATMOS S 351 and its variant Pleas
16. test Measurement See User s Handbook of the respective safety tester housing current test Adapt a mains cable for the device and take it into service The housing current test is carried out on metallic parts which are not connected to the protective earth conductor The housing current before and after pole changing shall be recorded in the test report Measuring points Overflow contacts on the side Overflow contacts on the housing floor Housing fastening screws on the housing floor Foot controller bush Fixing screws of the mains connection bush Permissible measured values lt 100 HA After the 1 error the following shall be tested Mains interrupted Press SFC mains key read value and record in test report Permissible measured values S F C lt 500 Protective earth conductor interrupted Press SFC SL key read value and record in test report Permissible measured values S F C lt 500 18 6 0 Maintenance and repair Patient leakage current test Measurement See User s Handbook of the respective safety tester patient leakage current test Adapt a mains cable for the device and the safety tester and take the device into service The patient leakage current is measured on all patient connections signal inputs and signal outlets that are connected together users parts Record patient leakage current before and after pole changing in the test report Measuring points Overflow contact
17. 11 to the processor board to recognise a start 6 Pipework on the pressure side The piping on the pressure side connects the pump 4 with the silencer 7 The piping is made of silicone hoses 7 Silencer The silencer is integrated into the housing The exhaust air hose 6 is clamped in the silencer housing and se cured with 5 screws and a cover plate Noise absorbing padding is fitted in the silencer housing to absorb the noise The air passes out of the back of the housing to the outside 13 Fan The fan serves to cool the pump 4 and generally to cool the inner space The fan is supplied with 12V dc by the processor board 14 The fan switches on at a temperature of 45 C and off at a temperature of 40 C the temperature transducer 16 Unit function unit construction fN NN 14 Processor board The processor board serves to control and monitor the ATMOS S 351 It forms the central unit On the processor board there is the processor the power supply for the elec tronics the pressure transducer 15 and the temperature transducer 16 18 Display and keyboard The display and the keyboard are directly connected to the processor board 14 with the ribbon cable 17 On the ribbon cable 17 there are 2 ferrite cores for fault clearance The display is a graphic LC display with 128 x 64 pixels The lighting is done by means of LEDs 22 Foot controller connection In the standard component AT
18. MOS 351 the connection is done directly through cable 23 to the processor board 14 The foot controller connection consists of a 9 pole Sub D Bush 25 27 29 Overflow contacts left trolley right The overflow contacts are connected through the con nection wires 24 26 28 to the processor board 14 The overflow recognition is done by a resistance measu rement 30 Mains input The mains input consists of a cold device connection box with integrated fuses and an EMC filter In addition a potential equalisation bush is connected here Unit function unit construction 3 2 4 Electronics The description is done by means of function blocks Block 1 Potential separation and production of 12V dc The supply voltage is connected at the entry to the block There is a switch to switch over between 115 and 230V ac The transformer has an insulation designed for a voltage of 4kV and supplies an output voltage of 18V ac The secondary winding is protected by a fuse 0 6 AT A bridge rectifier is fitted to rectify the ac voltage Block 2 Control of the motor The motor is connected through a semi conductor relay This semi conductor relay has an insulation designed for 4kV The control of the relay is achieved directly from an output of the controller If the input signal of the motor is low the motor is turned on Block 3 Control of the 5V dc The 5V dc is controlled by an LM 2574 switch regula tor The re
19. TMOS S 351 changes automatically into suction mode and retains the vacuum value set before it was shut down Service Level 2 By simultaneously pressing the keys Standby and Intermittent when switching on the unit goes into the Service 2 menu Select the Function Test Hardware Check the operation of the fan Operate the fan control The fan must start and blow into the housing Check start exhaust valves Operate the valve controls The switching of each valve must be audible Check the running of the set pump Select the function test airtight Carry out the tightness test according to the instructions in the display OK appears as a result 22 60 Maintenance repair Performance test The performance test of the unit shall be carried out with the supply voltage given in the operating contract and the given mains frequency The unit is operated in the suction mode for this The following performance must be checked e Vacuum gt 88 e Flow atleast 32 l min on the unit connection pipes without bacterial filter Set delivery condition The delivery condition must be set as follows In Service Mode 1 e Adjust unity Delivery in Germany kPa Delivery abroad kPa e LCD brightness 20 e Vacuum limit 50 kPa e Increase decrease time 10 seconds e Vacuum hold time 60 seconds e Pause 60 seconds In Service Mode 2 e Clear Errors Yes erase error memory Operation on the unit before switching it
20. articles visible and no pixels should be missing Change into Intermit mode by pressing the Intermittent key Phase 1 Unit creates vacuum within about 10 seconds upper left counter in the display counts from 10s downwards 500 mbar Observe increase of vacuum Note end value of vacuum Phase2 The vacuum is held for about 15 seconds see counter Phase3 Unit decreases the end vacuum set within about 10s see counter 500 mbar to 0 mbar Observe vacuum reduction Phase 4 System is completely ventilated The unit pauses for about 10 seconds After Phase 4 the unit begins again at Phase 1 Leave the Intermit Modus by pressing the intermittent key Function of overflow short circuit Start the Intermit mode by pressing the intermittent key Connection of the test unit to the test sample to overflow contacts left or right The terminal marked with should be connected to the upper contact unit the terminal marked with to the lower contact unit e Setting Overflow high The overflow message must appear Any vacuum present is destroyed e Setting Overflow low The overflow message must appear Any vacuum present is destroyed Setting Short circuit Produces a continuous short circuit The short circuit message must appear at regularintervals Any vacuum present is not affected by this Leave the Intermit Mode by pressing the intermittent key 20 Maintenance repair Function of foot controller Swit
21. as follows In the Service Mode 1 The Service 1 Menu can be reached by pressing the extraction cup key when starting e Adjust units Delivery in Germany kPa Delivery outside Germany kPa e LCD brightness 20 e tone VE start beep ON VE stop beep ON e VE Time Increase time 120 seconds Decrease time 20 seconds e VE Vac 80 kPa e VE Automatic VE Fully Automatic In Service Mode 2 e Clear errors Yes erase error memory Operation of the unit before switching off e of operation VE Mode 29 Spare Parts Subunit if no fig Spare Part Article No MEDI VAC EXTERNAL JAR 1 L FAN MICRONEL F62LMO12GK 0 S HOUSING OUTSIDE 30 Spare Parts contin Subunit if no fig LID SYSTEM PRESSURE SPRING 3 6X0 4081 7X9 6 000 0522 0 Spare Part Article No STAR SHAPED HANDLE 31 Technical Specifications Air flow rate Max vacuum Vacuum readout Auxiliary air control Fine suction Collection jars Suction hoses Voltage Current consumption max Power consumption Mains cable Operating period Fuse Interface Protective earth conductor resistance Earth leakage current Casing leakage current Patient leakage current Heat emission Noise level Ambient conditions Transport storage Operation Dimensions HxWxD Weight Protection class EN 60601 1 Degree of protection Protection category Classification as per Appendix IX of EC Directive 93 42 EEC
22. at can be obtained as an accessory in the overflow container This bacterial filter has a longer life and can be autoclaved Further details on this are given in the Operating Instructions 3 2 3 Internal components 2 Pipework on the vacuum side The pipework on the vacuum side connects the connection nipple 1 the exhaust air valve 3 the pressure transducer 15 on the processor board 14 to the pump 4 vacuum connection The pipework is manufactured complete with silicone hoses 3 Exhaust air valve The exhaust air valve 3 serves to reduce the vacuum if the system collection jar etc is shutdown The valve is controlled by the processor board 14 with 12V dc The function can be tested in Service Mode 2 4 Pump The pump 4 is supplied with mains voltage through the processor board 14 The processor controls the pump 4 until the preset vacuum is reached When the vacuum is reached the power supply is switched off The function can be tested in Service Mode 2 5 Start valve The pump 4 does not start automatically under vacuum Therefore when necessary the vacuum in the pumping head of the pump 4 is reduced by the start valve Since the valve is located in the intermediate piping of the pump no reduction of vacuum occurs on the vacuum side The control of the valve 5 is done by the processor board 14 The processor uses the running signal of the pump which is reported by the control wire
23. ch on unit with foot controller connected The foot controller is recognised Start the Intermit mode by pressing the intermittent key Move the foot controller The function of the unit is not affected by the foot controller Leave the Intermit mode by pressing the intermittent key Function of arrow keys Start the Intermit mode by pressing the intermittent key With the Max key the target value for the end vacuum is set to maxbar With the key the end vacuum target value can be reduced With the gt key the end vacuum target value can be increased Leave the Intermit mode by pressing the intermittent key Filter blocked function Start the Intermit mode by pressing the intermittent key During vacuum increase Phase 1 suddenly put a kink in the suction connection piece and after the Filter blocked message ap pears release the kink again The Filter blocked message disappears after a while Vacuum creation was not interrupted Suction function standard setting The end of the suction hose is connected to the vacuumgauge Switch off on A beep should be heard Check vacuum indicator is at 500 mbar The indicator must lie between 480 and 520 mbar The test shall be carried out with standing vacuum that is to say the pump must not run closed system set regulation to 500 mbar Note the vacuum measured Check the starting of the set at 500 mbar and 800 mbar the set must start within 3 seconds Che
24. ck exhaust air valve It must be possible to create vacuum with a closed system Test environment 1 51 secretion glass With a closed system switch from higher target value to lower target value The vacuum must be decreased without opening the hose Test overflow use test device A voltage measuring instrument is used to check the polarity of the contact elements For this the bush of the test instrument marked with is connected with the voltage input V the bush of the test instrument marked with is connected with the reference input 0 Com of the voltage measuring instrument Overflow contacts left right Connection of the test instrument to the unit being tested The terminal marked with shall be connected to the upper contact element the terminal marked with to the lower contact element Setting Terminal voltage The voltage displayed by the voltage measuring instrument is between 2V and 3V Setting Trolley low No overflow message can be given Setting Overflow high The overflow message must appear Setting Overflow low The overflow message must appear Setting Short circuit The corresponding short circuit message left right must appear 21 Maintenance repair Amos ME Overflow contacts on trolley Connect the test device to the item to be tested The two terminals of the test device shall be connected to the contacts for connecting the trolley The terminal marked with
25. e hoses externally and buckled or squeezed kinked pump Valve stuck Clean the valve plates EE Filter is blocked Change the bacterial filter 16 Maintenance repair ts When opening used equipment and repairing hose and pump components it must be assumed that these parts are contaminated Protect yourself from direct contact use disposable gloves and follow the hygiene safety regulations ts After assembly the operation of the suction device should be checked Please use the following test procedure N IS See also the respective standards of the coun try involved for carrying out the service work as for example in Germany the VDE 0751 Vs checks should be documented d ATMOS S 351 ATMOS S 351 Type Version Surgery 2 0 or higher ATMOS S 351 ATMOS Natal S 351 Type Version Natal 2 0 or higher XN J 6 1 Test procedure 6 1 1 Visual inspection e The electrical connections shall be made as specified in the wiring diagram e The electrical wires shall be so laid that damage due to chafing is not possible Take care that there are no adjacent sharp edges The wires must not be close to cooling units e The electrical wires shall be so secured e g by cable binders that if a wire breaks off no adjacent metallic parts can be touched e All mechanical parts including printed circuit boa
26. e increased with the gt key e Pressing the Max key will be ignored by the unit e Ventilate by pressing the END key During the ventilation e The decrease of vacuum can be accelerated with the lt key e The decrease of vacuum can be delayed with the gt key e Pressing the Max key will be ignored by the unit Filter blocked function e While vacuum is being created kink the suction hose on the suction connecting piece suddenly and after the Filter blocked message appears release the kink The Filter blocked message disappears after a while Vacuum creation is not inter rupted Function for the non achievement of the end vacuum because of altitude e Connect the adjacent air valve restricted to about 740 mbar to the suction hose e Press extraction cup key in order to restart the automatic vacuum creation e Accelerate the creation of vacuum by pressing the gt key until about 600 mbar is reached e Release gt key e The adjacent air flap prevents the end vacuum being reached 800 mbar A vacuum of gt 700 mbar is achieved e pump runs continuously No warning signal sounds e After about 30 seconds press the END key 25 Maintenance repair Overflow short circuit function Close the end of the suction hose so that it is airtight Press extraction cup key in order to start the automatic creation of vacuum Connect the test equipment to the unit to be tested o
27. e look also under the corresponding Chapter of the Operating Instructions ooo Possible causes Remedy The indication Emergency See Chapter 3 5 2 Service Look in error memory see Chapter operation appears in the Level 2 3 5 2 Service Level 2 display appears in the display Level 2 test hardware Check the ventilation holes and remove any foreign bodies MEER Only put the ATMOS S 351 on a solid surface no foam base plates Supply voltage too high Measure the supply voltage The voltage must not exceed 10 at 230V 253 V Ambient temperature under Allow the device to stand for at least 5 C 1h in an air conditioned room the error message is erased if the device Ambient temperature over Let the device stand for at least 1h in 40 C an air conditioned room the error message is erased when the device falls below 60 C Oversuction of the ATMOS Use without or with wrong The device must be completely 351 bacterial filter and jar cleaned and disinfected For this the pump has to be removed and valve plates changed All parts which come into contact with the secretion hoses pump head membrane must be disinfected or changed In addition the silencer material should be changed Use only the original accessories Message Filter blocked Airway on the connection pipe There is no error in this case Always with new bacterial filter closed operate the ATMOS S 351 with a secretioncontainer Crushed hose Check th
28. es are quoted with a tolerance of 5 unless separately specified Issue of Technical Specifications 15 10 2002 32 90 Conversion instructions 1 MQ Resistance Hose clip Fig 12 Trolley view from below Push the ends of the wires Hose clip Resistance into the fixing holes Fig 13 Trolley view without contact rails from the UON CN 9 1 Trolley The following conversion instructions enable the trolley of the Atmoforte 350 and Record 500 to be used on the ATMOS S 351 Validity From series 20414701 2000 05 no longer necessary 17 05 2000 modification 5085 00 After the conversion the trolley can be used for Atmoforte 350 Record 500 ATMOS S 351 and Atmoforte 350 A Modification Insertion of a 1 MO resistance 011 0042 0 on the over flow contact rail 33 Annex Plans c38 KK2 5 3 RSS zt nF Molex VN4306A ST R25 330r T7 Aufdruck 4 C30 100nF T KK2 54 4 Molex R28 R30 C21 O 1uF 10k KK2 54 2 3 ST R11 2 1k 100k c29 L3 126 m m 1 MODU2 STIFTL 26 Wear Strip with lock FCB61C65 BOC552 On socKegerccea on socketlpii28 270512 aut Fassung 0128 74HC573 be 18pF 18pF CED n H Se dee Up em C7 A 10yF 16V
29. for the targeted testing of individual components Chose the function to control the valves fan or pump directly Fan on off with the intermittent key for the ATMOS S 351 with the extraction cup key for the ATMOS S 351 Nata Exhaust valve on off with the arrow left key valves exhaust Starting valve on off with the arrow right key valves starting Pump on off with the max key pump 12 fN Changing parts Amos Clean the ATMOS S 351 or its variant before you carry out repairs Take suitable precautions to prevent con tamination 4 1 Removal and fitting of the housing Removal a Remove the mains cable at the back of the device b Remove the two cover plates on the back of the handle c Remove the 2 connecting screws on the handle Torx d Remove the 2 connecting screws on the lower side of the housing forward shell e Pull the housing shells from one another Assembly After carrying out the repair assemble the ATMOS S 351 as follows a Push the two housing halves together b Push the cable loom between both housing shells as far as possible into the back half of the housing c Now slide the two halves of the housing completely together Take care that you do not pinch clamp either the hose or the cable d Screw in all fastening screws again e Insert the cap again 4 2 Removal of the pump module a Remove the two fixing screws on the pump console b
30. gulation is done by back coupling which by means of a voltage divider is taken back to the feedback of the switch regulator The switch regulator is short circuit proof The voltage is smoothed by capacitors Block 4 Control of the 12V dc The 12V dc is controlled by an LM 2574 switch regula tor The regulation is done by back coupling which by means of a voltage divider is taken back to the feedback of the switch regulator The switch regulator is short circuit proof The voltage is smoothed by capacitors Block 5 Production of the negative 12V supply The negative voltage is produced by a charging pump IC 7660 Itis fed by the positive 12V Block 6 Reference voltage The 2 5V reference voltage is produced by a low power band gap diode The diode has a temperature coef ficient of 50 ppm All AD converter values are based on this reference voltage Block 7 Low pressure measurement A silicon transducer is fitted to measure the low pressu re The measuring bridge of the transducer is fed with a constant voltage This constant voltage is produced by means of an amplifier and the reference voltage U ensor 10 025 V In addition the measuring bridge is evaluated by means of a difference amplifier The difference ampli fier amplifies the signal so that 1 bar under pressure corresponds to 2 5V N CN e Block 8 Motor rotation monitoring A reflex light barrier is used to check whether the motor is started in the switched o
31. in display included Control board 444 0403 0 not connected reserved Attention 115V 230V switch ATMOS Medizintechnik GmbH Ludwig Kegel Str 16 79853 Lenzkirch Schww Wiring diagram Atmos S351 115 Atmos S351 Natal 115V Atmos S351 Ophthal 115V molor sensor Aggregat mo 000 0521 1 00160 36 Annex Plans white grey green Brown rose V yellow Ferrite connection trolley overflow exhaust starting e valve valve foot control sleeve 008 0452 0 main supply incl EMC 7 overflow left wire in display included Control board 7 Ferrite 444 0403 3 1 Attention ZV not connected reserved 115V 230V switch 37 000 0521 1 Date prepared 28 10 0 dd released Atmos S 12 Atmos S351 Natal 127V Atmos S351 Ophthal 127V ATMOS Medizintechnik GmbH Ludwig Kegel str 16 79853 Lenzkirch Schww Re Qn m D000006 10 grey white N brown rose yellow N Ferrite 7 connection trolley overflow exhaust starting e valve valve foot control sleeve 008 0452 0 main supply incl Aggregat motor sensor 3uF 444 0416 0 000 0717 0 c X c c lt Attention 7 overflow left Ferit Display 444 0413 0 wire in display included Control board 444 0403 0 115V 230V switch not
32. ks MOTOR Speed of the pump 5 v rectangular SENSOR Vacuum amplified 0 2 5V 2 5 V at 1 bar REF Reference voltage 2 5 RST Reset 0 5 VDC 5V Negative supply 5 VDC 5 5 V supply 5 VDC 12V 12 V supply 12 VDC GND Mass earth 0 VDC Control board measuring point Unit function unit construction gt With the ATMOS S 351 Natal you get into the Service Level 1 if you hold depressed the extrac tion cup key or the eye key during starting The additional functions of Service Level 1 of ATMOS S 351 ATMOS S 351 Natal is described in detail in the Operating Instructions lt With the ATMOS S 351 Natal you get into the Service Level 2 if you hold depressed the suction bell key or the eye key together with the End key during starting Fig 2 Start picture Service Level 2 fN C NN The ATMOS 351 or its variant differentiate between 2 Service Levels 3 5 Service Mode Service Level 1 Serves to set the suction device This level is described in the Operating Instructions Service Level 2 Serves to support the service 3 5 1 Service Level 1 With the ATMOS S 351 you reach Service Level 1 if you hold the Standby key down when switching on Functions of Service Level 1 Adjust Unity The units of the indicator can be changed over here mbar kPa mmHg LCD Brightness The LCD background lighting can be adjusted here 0 to 25 Adju
33. ller The foot controller is read with the help of the AD converter In order to guarantee a voltage at the input of the AD converter of 0 1 9V a pre resistance of 15 kOhms is used The resistance R is used to recognise whether a foot controller is attached Block 17 EEProm Various settings are stored in the EEProm 93LC66B The communication with the EEProm is done by means of a serial SPl bus Block 18 Controller An 80C552 made by Philips is used as the controller The controller possesses the following features 80C51 core 256 x 8 internal RAM externally upgradable to 64k 3 independent timers 8x 10 bit AD converter input 2x 8 bit PWM signals 5x 8 bit 1 0 Ports plus an 8 bit inlet port ADC a UART watchdog on chip 24 MHz type Block 19 Oscillator The oscillator is produced by a quartz crystal and 2 capacitors The cycle frequency is 24 MHz Unit function unit construction fN NN Block 20 Adress latch An IC 74HC573 is used to latch the lower 8 address wires A0 A7 First the addresses are given over the combined data address bus and intermediately stored by the 74HC573 before the data is read in or read out over the data bus Block 21 Eprom An Eprom 27C512 is fitted as program memory The eprom has a storage capacity of 512 kbits and is orga nised in 64k x 8 bit Block 22 RAM An RAM HY62644 is fitted as volatile memory The RAM has a storage capacity of 64 kbit and i
34. n condition The reflex light barrier consists of an LED and an open collector exit The light diode is fed through a pre resistance of 5V The voltage differences on the open collector exit are assessed by the comparator circuit of the OP2 and so prepared that a rectangular signal is made available to the controller e Block 9 Control of valves and fans The two valves start and exhaust air as well as the fans are connected with a FET The loads lie on one side on 12 and are if necessary pulled with an FET to GND The FETs are controlled directly by the controller Two other FETs ensure that the intake and outlet air valves cannot be connected while the reset signal produced from the reset module is on BYV27 diodes are used to prevent radio interference e Block 10 Brightness control of the LC display The brightness of the LC display can be controlled with the controller The current through the LEDs to light the display is controlled through a constant current source This constant current source is produced by means of a shunt R and an operation amplifier The target value for the current source is given by the PWM signal of the controller e Block 11 Indicator The connection to the indicator board is done by a 26 pole ribbon cable The control of this LC display and the two LEDs as well as the inputting of the push buttons is done by means of this ribbon cable The control of the LCD graphic display is done by means
35. n the overflow contact left or right The terminal marked with should be connected to the upper contact element the terminal marked with should be connected to the lower contact element Setting Overflow high The overflow message must appear at regular intervals The creation of vacuum is not however affected Setting Overflow low The overflow message must appear at regular intervals The creation of vacuum is not however affected Setting Short circuit Produce continuous short circuit The short circuit message must appear at regular intervals The creation of vacuum is not however affected Ventilate by pressing the END key Foot controller function Close the end of the suction hose so that it is airtight Switch on unit with foot controller connected foot controller in heel stop While creating vacuum move foot controller in the direction of the toe stop When covering the currently set vacuum value the foot controller should take over the checking of the set vacuum The suction device changes into the suction mode Reduce vacuum to 0 and switch off the unit Switch on unit with foot controller connected foot controller in toe stop During vacuum creation move foot controller in the heel stop direction When covering the currently set vacuum value the foot controller should take over the checking of the set vacuum The suction device changes into the suction mode Reduce the vacuum to 0 and switch off the unit
36. off e Vacuum Maximum e of operation Suction Mode with Auto Standby 23 Maintenance repair Amos M 6 1 4 Functional test of ATMOS S 351 Natal Vacuum extraction The functional test of the unit shall be done with the supply voltage 10 given on the description plate and with the given mains frequency e for230V ac 207 V ac should be set e for100Vac 90 V ac should be set e for115Vac 103 V ac should be set e for127 Vac 114 V ac should be set The following functions must be checked The Natal accessories shall be connected to the unit for the functional test The extraction cup is replaced by a piece of hose of the same length The unit is set to VE fully automatic see Service 1 Menu Function increase decrease vacuum The end of the suction hose is open e Switch off switch on A beep must be heard e The display must be clearly visible There must be no dirt particles visible and no pixel must be missing e The pump runs continuously the green LED flashes the heading VE Auto can be seen in the display Connect the end of the suction hose to the vacuumgauge e An audible signal sounds when the indicated vacuum value is 200 mbar start e Observe automatic vacuum increase Counter upper left counts from 120 downwards e Accelerate vacuum increase by pressing the gt key While the gt key is kept depressed a continuous peep sound can be heard When the counter figure is ab
37. out 10s release gt key and observe the end phase of the automatic vacuum increase e After the end of the vacuum increase two signal peeps can be heard one after another Note the value of the final vacuum achieved The target value upper right in the display is 800 mbar e Simulate a mains failure by switching off the unit No vacuum decrease occurs After about 5 seconds switch on the device again The vacuum is maintained e Start the ventilation procedure by pressing the END key and check the vacuum decrease time typically 20 seconds The counter upper left counts from 20 downwards e After the vacuum decrease time the system is completely ventilated Function of Semi Automatic Mode e Switch off unit While starting change into Service 1 Menu by pressing the extraction cup key In the VE Automatic menu select VE Semi Automatic and confirm with the Max key e Switch unit off on The heading VE semi can be seen in the display The unit creates about 200 mbar vacuum and gives acoustic sign simultaneously with the flashing of the LED e Automatic creation of vacuum is started with the pressing of the extraction cup key beginning from about 200 mbar e Ventilate by pressing the END key e Set VE Fully Automatic in Service 1 Menu and confirm with the Max key e Switch unit off on The heading VE Auto must be visible in the display e Ventilate by pressing the END key 24 Maintenance repair
38. rds shall be checked after assembly to see they are pro perly secured and have not suffered any damage that can be seen e The main switch is correctly installed switch down device in service switch up device out of service e Sticker printing must be legible and be in the correct position Type plate with safety data beside the mains input bush Voltage equalisation sign beside the earthing point Take note of Operating Instructions beside the foot controller bush of the ATMOS S 351 Front foil operating foil must sit correctly There must be no fouling between the graphic display and the front foil Hose connection diagram on the back of the housing or opposite the intake connections Exhaust plate besides the exhaust opening on the back of the housing e The supply voltage specified must agree with the set ting on the plate the set and the type plate e The screw covering caps on the two upper housing fixing screws are appropriate e The software version number which appears when switching on the graphic display agrees with the address on the EPROM on the control plate The software version number shall be recorded e The bacterial filter shall be checked for passability and correct position as well as the correct direction of flow see Operating Instructions 6 1 1a Suction device setting locking While switching on press the intermittent 2 and Max keys at the same time The message Suc
39. s on the sides Overflow contacts on the housing floor Permissible measured value N C lt 10 pA The following errors are checked Mains interrupted press mains SFC key read value and record in test report Permissible measured value S F C lt 50 pA Protective earth conductor Press SFC SL key read value and record in test report Permissible measured value S F C lt 50 pA Insulation testing high voltage The insulation test must not be carried out It was already carried out before the device was delivered and should not be repeated 19 Maintenance repair Amos ME 6 1 3 Functional test of ATMOS S 351 The functional testing of the unit shall be done with the supply voltage 10 on the type plate and with the given mains frequency The following functions must be checked The accessories of the ATMOS S 351 must be attached to the unit for the following functional test Intermit function increase vacuum hold vacuum reduce vacuum pause The following intermittent settings shall be chosen in Service Menu 1 Press the Standby key during starting Final vacuum Vac Limit 500 mbar Increase decrease time incr decr time 10s Holding time Vac hold 15s e Pause 10s The parameters to be set are in the Adjust Intermit Menu e Connect the end of the suction hose to the vacuumgauge e Switch off on beep should be heard e The display must be easily readable there should be no dirt p
40. s organised in 8k x 8 bit Block 23 Address decoding is used for the address decoding for the control of the LC display This decoding circuit has several functions The RD signal is inverted The enable signal is generated by the connection of the RD WR and A15 signals Block 24 AD transducer setting This circuit part serves to adjust and filter the AD conver ter signal An RC member filters the signals A Z diode protects from over voltage Block 25 Reset unit The reset unit TC1232CPA has functions 1 Voltage monitoring If an input voltage of 4 5V is excee ded the TC 1232 sends a reset signal to the control ler 2 Watchdog function A port is continually toggled by the controller If this toggeling is set for a time of more than 150 ms the unit reports a reset to the computer 3 Manual reset If the J1 is short circuited the unit sends a reset N Unit function unit construction Amos ME 3 3 Allocation of wires to the plug Foot controller Pin Designation Type of signal 1 2 3 4 5 GND Low voltage 6 7 8 Schleifer potentiometer Low voltage 9 Supply potentiometer Low voltage Housing Screening Earth Allocation of wires to the pins of the foot controller 3 4 Test and measuring points The following measuring points are available on the control board Designation Signal Type of signal valve Remar
41. st Intermit Adjustment of the Intermit mode can be done here Read the description of this in the Operating Instruc tions 3 5 2 Service Level 2 Overview of the functions of Service Level 2 a Show Errors Any errors that have occurred including the error histo ry can be seen here b Clear Errors Serves to delete the error memory C Test Airtight The system tightness can be tested here d Test Hardware The main functions of the suction device can be directly tested With the ATMOS S 351 you reach Service Level 2 when you hold the standby and the intermittent key depressed when switching on Select with the arrow keys the corresponding functions and confirm them by pressing on the Max key In order to leave the service level press the Standby key and the Extraction cup key on ATMOS S 351 Natal 10 Unit function unit construction total Errors Emr1 pressure sensor previous abort 3 Number of errors that have occurred error Error designation a Show Errors fN C NN The error history can be used to make the search for errors easier A maximum of 10 errors can be stored If more than 10 errors occur then the first 9 and the last error that occurs are stored The last error is always at the start Error 1 The following errors are recognised
42. st appear e Setting Short circuit The corresponding short circuit message left right must appear Foot controller e Set the target value to maximum connect the foot controller The foot controller bargraph must be adjustable from 0 to max Change into the VE mode Change into the VE mode by pressing the extraction cup key Tests in Service Level 2 The Service 2 Menu can be reached by simultaneously pressing the extraction cup and END keys when switching on Functional test of hardware e Choose the hardware functional test e Check that the fan works Operate the fan control the fan must start The direction of flow is into the housing e Check the start exhaust air valves Operate the valve control The switching of the respective valve must be audible e Check the starting of the pump set Airtight functional test e Select the airtight functional test e Carry out the tightness test according to the instructions in the display should appear Performance test The performance test of the unit shall be carried out with the supply voltage given in the service contract and the mains frequency specified For this operate the unit in suction mode The following performance must be checked e Vacuum gt 88 Flow at least 32 l min at the unit connection pipe without bacterial filter 28 N 60 Maintenance repair Amos XJ Set to the delivery condition The delivery condition must be set
43. ther collection jar is the suction unit again ready for service The vacuum can be selected by 3 push buttons A further way of controlling the vacuum is with the foot controller This is connected to the sub D connection bush 22 If vacuum is to be reduced the exhaust air valve 3 which is controlled by the processor board 14 opens A tem perature monitor 16 monitors the internal temperature of the suction device This controls the installed fan 13 when required If the temperature rises above a certain limit 65 C then a warning is given If the 2 limit is excee ded 85 the unit is shut down and a corresponding fault indication is given The variant ATMOS S 351 and ATMOS S 351 Natal have additional functions which allow vacuum creation and reduction over a predetermined time t When using accessories which are not provi ded especially for the ATMOS S 351 or its variant functional limitations may occur overflow recognition short circuit fN oo 3 2 Description of the sub assemblies The ATMOS 351 and its variant are made up of the following components housing collection jar system with hose connections and bacterial ilter internal components pump processor board electronics 3 2 1 Housing The housing of the ATMOS 351 or its variant is made of plastics ABS UL The main switch the operating and indicating strip the connection bushes the jar fixings overflow contac
44. ting instructions 08 Information which is of particular interest to the user is printed in a box throughout this manual t Before opening the ATMOS S 351 for service work switch off the unit and remove the power cab Maintenance and or opening and repair of the ATMOS S 351 may be carried out only by an expert authorised by the manufacturer When doing this technical and hygienic protective measures are to be taken When assembling the housing particular care is to be given to the electric cabling and the silicone hose These must not be bent sharply or get caught If necessary the lines should be retracted somewhat into the rear housing shell In case of improper maintenance or repair of the appliance and the use of non original parts the product liability of the manufacturer will become forfeited When opening the appliance during the period of guarantee the guarantee given by the manufacturer will be forfeited When the appliance is decommissioned at the end of its service life and is to be disposed of the components are to be given separately into the various recycling processes The same regulations are to be observed concerning the disposal of replacement parts 2 0 Installation See chapter 4 0 Installation and commissioning in the operating instructions 3 0 Unit function unit construction al ATMOS 351 Housing f 7 7775 55 55 757 557 7557 155
45. tion unit locked appears in the display The suction device then changes to the respective switching on menu Surgery Natal 17 Maintenance repair 6 1 2 Electrical testing Protective earth conductor Measurement See User s Handbook of the respective safety tester protective earth conductor measurement protective earth conductor testing Carry out the corresponding operating instructions with the safety tester on the unit NOTE The resistance of the mains cable should not be included in the measurements The resistance should however be measured and subtracted from the measurements on the device Measuring points Earthing point besides the mains connection bush Foot controller Pump Fixing screws of the pump Duration of the measurement 5 10 seconds measuring point Permissible measured value lt 0 10 Earth current test Measurement See User s Handbook of the respective safety tester earth current test Adapt a mains cable for the device and safety tester and take the device into service The earth current is measured the protective earth conductor of the mains supply line The earth current before and after pole changing should be recorded in the test report Permissible measured values N C 500 The following 1 error is tested e Mains supply interrupted press SFC mains key read value and record in test report Permissible measured values S F C lt 1000 Housing current
46. tructions The ATMOS S 351 is manufactured in 3 variants ATMOS 351 e ATMOS S 351 Natal The ATMOS S 351 Natal provides for a comfortable realisation of vacuum extractions ATMOS Current issue S 351 S 351 Natal Software control Software CAN Hardware control 1 1 2 0 or higher Operating instructions ATMOS S 351 444 0405 A ATMOS S 351 Natal 444 0401 A The operating instructions relating to the ATMOS S 351 form part of these service instructions The persons authorized for service work must be familiar with the contents the kind of installation the start up as well as the operation described therein 1 2 Information on manufacturer Further information accessories and spare parts are available from ATMOS Medizin Technik GmbH amp Co KG Ludwig Kegel Strafe 16 79853 Lenzkirch Deutschland Tel 49 0 76 53 6 89 0 Fax 49 0 76 53 6 89 190 49 0 76 53 6 89 493 Service Center atmos atmosmed de www atmosmed de 1 3 Exclusion of liability ATMOS assumes responsibility for the unit as far as safe ty dependability and functionality are concerned only if assembly readjustment modifications extensions or repairs are carried out by ATMOS or by persons autho rized by ATMOS only original ATMOS parts are used and the unit is used in compliance with the operating instructions 1 4 For your safety Please also pay attention to chapter 2 0 For your safety in the opera
47. ts right 29 and left 25 and the faste ning nuts for the trolley overflow contacts on the trolley 27 are fitted on the housing 3 2 2 Collection jar system with hose connections and bacterial filter The collection jars which can be supplied in various sizes and materials see technical specifications are put into the mountings provided The collection jar lids then con tact the rails As a result an electrical overflow protection is provided by the overflow contacts 25 27 29 The processor board 14 assesses the signals appropriately The electronics differentiate between no existing overflow resistance close to overflow present and a short circuit lt 100 In addition on the signal input of the trolley 27 the trolley is recognised This is done by a resistance installed in the trolley 1 20 Please note that if using an older trolley the resistance may not yet be installed see Page 38 Trolley for ATMOS S 351 or modify its variant A hydrophobic bacterial filter must be fitted in the airway in front of the connection nipple 1 which prevents the secretion being sucked into the pump and thus avoids a bacteria contamination of the space inside the housing There are two ways of doing this 1 Useofthe bacterial filter that is included in the scope of supply This filter is fitted in the pipework between the connection nipple 1 and the overflow container 2 Use the bacterial filter th
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