Maintenance Manual
Contents
1. 5 Figure 1 3 Fuse Insertioni ciano ilaele Lina ge pe tese de HER eH cR IRL Pen 5 Figure 1 4 Power Cord and PC Communication 5 List of Tables E LS I CARRO e chance 4 Table 1 2 1039 Model Family Re ede te ee i Rt iu ede eee 4 Section Control Log Label amp description Changes Summary ven d Approved by Initial release Mr A Weiss 20 05 2003 Changing of outhorized representative in Europe 2 Mr I Blaufeld 01 10 2003 Changing Street address of MDD Authorized Mr I Blaufeld 31 12 2005 representative in Europe Adding address of authorized representative in Canada 3 Mr I Blaufeld 16 05 2006 Adding Symbols amp Conventions sub section 2 Mr N Ben Shalom 31 05 2010 Updating Labels sub section Mr N Ben Shalom 31 05 2010 Updating addresses of manufacturer and authorized 3 4 Mr N Ben Shalom 28 04 2010 representatives in USA amp Canada Updating Figures 1 1 1 3 amp 1 4 4 5 Mr N Ben Shalom 28 04 2010 Change of Authorized Representative in Europe 3 Mr Yaron Zarhi 05 01 2012 Replacement of UL Label amp description with CSA 3 Mr Yaron Zarhi 16 01 2012 L93101B0 A Section 1 Page 1 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 1 1 General Lympha Press Plus and Ballancer Pro are fully program2. ennt rennen 2 Figure 3 2 Garment Structure jin e uiu Re dde He cederet te pe coste Le deuda usis 3 Erpure 3 3 7 View of Velcro Sleeve ud eet iaia 4 List of Tables None Section Control Log Page Approval Changes Summary Changed Approved by Date Initial release Mr A Weiss 20 05 2003 Update garment identification label 2 Mr I Blaufeld 16 05 2006 L93101B0 A Section 3 Page 1 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 3 1 The Garment Label The label inside the sleeve see Figure 3 1 is standard for all Mego Afek compression therapy garments and shows the following categories listed below From left to right Type The model amp type of sleeve Main amp Secondary Group The various sleeves are divided into four groups according to circumference Length The length of the sleeve from heel to top rounded to the nearest 5cm No of cells The number of cells inflatable chambers in the sleeve Special size Within a group the further breakdown of sizes Custom Made Custom made garments and their Cat Number International symbols with cleaning instructions of the garments see User Manual Serial No Serial number of the Compression Garment The name and address of the manufacturer CE label S ec ial Main Secondary Eg Length cm IEEE Ballancer Overlapping Right Left PU coated Ser
3. Afek Ltd www megoafek com Compression Therapy System Lympha Press Plus Model 1033 AL EL Ballancer Professional Model 1033 AB EB Maintenance Manual L93101B0 A Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Table of Contents Section 1 General Description Section 2 Theory of Operation Section 3 Garments Section 4 Troubleshooting Section 5 Disassembling Procedures Section 6 Parts List Section 7 Maintenance Main Document Control Log Section Approval Rev Changes Summary Changed Approved by Date 1 0 Initial release Mr A Weiss 20 05 2003 1 1 Adding figure of testing set amp Update references 2 amp 7 Mr A Weiss 14 09 2003 1 2 Changing of outhorized representative in Europe 1 Mr I Blaufeld 01 10 2003 13 Changing Street address of MDD Authorized 1 Mr L Blaufeld 31 12 2005 representative in Europe Adding address of authorized representative in 1 14 Canada Mr L Blaufeld 16 05 2006 Update Identification garment label 3 Update paragraph 18 amp 21 in Electric pneumatic system and update Figure 2 1 Electro Pneumatic 2 Mr N Ben Shalom 08 04 2010 diagram Updating photos 1 2 amp 5 Mr N Ben Shalom 28 04 2010 Updating addresses of manufacturer and 2 authorized representatives in USA amp Canada 0 1 Mr N Ben Shalom 31 05 2010 Adding Symbols amp Conventions sub section and Upd
4. Defective valve Replace distributor assembly Defective main board Replace main board The device halts and shows Defective main board Replace main board ChkSum err message The device shows Init Ser Defective main board Replace main board Memory message for few seconds and then Ready The device does not finish The device is not calibrated Perform calibration procedure learning after 10 cycles 7 5 3 when connected to the Standard Testing Unit Defective valve Replace distributor assembly Defective main board Replace main board PC comunication problem Communication cable not Check and fix connected properly Wrong Communication port Select a different COM from the communication software Communication ports on the PC Contact your PC service do not function properly Defective inner comunication Replace inner comunication bundle bundle L93101B0 A Section 4 Page 4 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Section 5 Disassembling Procedures Table of Contents 5 1 Disassembling the Device 2 5 2 Reassembling the Device 6 Table of Figures None List of Tables None Section Control Log Page Approval Changes Summary Changed Approved by
5. Screw hidden behind the hose see 4 Figure 6 3 ID 6 Remove the 4 nuts and 4 screws that connect the base of the electro pneumatic assembly to the main base For reassembling please note tighten the screws but not the nuts Step F Disconnect the grounding wire from the base Step G Lift and remove the electro pneumatic assembly from the base L93101B0 A Section 5 Page 3 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual StepH Removing the distributor Remove the four screws two on each side that fix the distributor to its base StepI Disconnect the four connectors that belong to the valves and take out the distributor StepJ Replacing the CPU After removing the distributor the CPU on the main board can be reached easily Take out the CPU using a flat screwdriver No 1 A better way to reach the CPU is to remove the main board from its base without removing the distributor as shown in step K Software version label StepK Removing the main board Can be done without removing the distributor Remove the six screws as shown L93101B0 A Section 5 Page 4 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual x StepL Removing the compressor The compressor is fixed with four screws from the bottom side Before removing disconnect its gro
6. CoverAssemblyr ca fille eere er E egeta desea e e rene te ee pe testa 4 Figure 6 3 Base Assembly e aa eerte bee ete eter ieee edo 6 Figure 6 4 Base Assembly enitn ERR HE ia rel 7 Figure 6 5 Distributor and Main Board Assembly essere eene nre 9 Figure 6 6 Wiring Di gram heh te epp eden deer ee roce ree pte era peace 11 Figure 6 7 Pne matie Diaptath ls ete ette tte E HER ER Hee o Mee E cere et sees 13 List of Tables Table 6 1 Main Assembly Parts LiSt nennen tenete 3 Table 6 2 Cover Assembly Parts Dist ae 5 Table 6 3 Base Assembly Parts List a aaa iah aaa au iu ass 7 Table 6 4 Distributor amp Main Board Assembly Parts List esee 10 Table 6 5 Waring Parts EitSt s ipee ten t t eet ctp hama et 12 Table 6 6 Pneumatic Parts List eem He e Eutr eet pete eee Leere bI et red 14 Section Control Log Approval Changes Summary Page Changed Approved by Date Initial release Mr A Weiss 20 05 2003 Creating separate Parts List Tables for 3 5 7 10 Mr N Ben Shalom 24 05 2010 each assembly Tables 6 1 6 2 6 3 6 4 instead of the general Parts List Table former Table 6 1 Updating Tables 6 5 6 6 12 14 Mr N Ben Shalom 24 05 2010 Updating all Figures 2 4 6 7 9 11 13 Mr N Ben Shalom 24 05 2010 L9310
7. Valves IA and IB are the inlet valves to these two sections while OA and OB are their outlets The cycle is performed by opening and closing the 12 valves numbers 1 to 12 These 12 valves are divided into four groups of three valves each Groups 1 and 3 belong to section A while groups 2 and 4 belong to section B The cycle starts with group 1 1 2 3 one by one via valve IA Then IA is closed and IB is opened enabling the pressure to group 2 4 5 6 Then again IA and IB are switched to inflate group 3 7 8 9 The cycle ends with group 4 10 11 12 again via IB This system enables the device to produce the several different cycles that are described in the User Manuals At the end of treatment the device goes into the active deflation stage when IA and IB are closed When OA and OB opened most of the air deflates via the Check Valve 9 until the pressure in the cells is low Then the compressor sucks the extra air from the garment via OA and OB The valve PO opens whenever it is necessary to release air The valve SE closes to produce vacuum in the system when the device is actively deflating the garments The Processor 12 on the Main Board 10 is pre programmed at the factory according to the specific model This Processor is replaceable If a new version of software is released it can be replaced by another processor programmed with the new version The version of the software is written on a label on the processor T
8. 2 Inspection and Maintenance Schedule Perform the Test Procedure see Paragraph 2 5 once a year 7 3 Cleaning For operating and maintenance of the devices cleaning 15 not required Should the need arise clean in accordance with the following procedures Clean wiring connectors and electrical components with a small stiff bristled brush and cleaning solvent made for electrical parts Wipe parts with a clean dry lint free cloth Warning Cleaning solvent is toxic and flammable Avoid contact with skin eyes or breathing of vapors Protective equipment consisting of goggles and rubber gloves is required Good general ventilation is normally adequate Failure to observe this warning may result in serious personal injury or death L93101B0 A Section 7 Page 2 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 7 4 Special Tools and Test Equipment X Note ES Pressure gauges should be calibrated annually by an authorized laboratory 7 41 Standard Testing and Calibration Sets Figure 7 1 Testing Set 12 Pressure gauge Board and Hose Bundle A Overall View B Connector Pressure Gauge and Relief Valve Figure 7 2 Calibration Set L93101B0 A Section 7 Page 3 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 7 4 2 PC program Identifying Software Version Whenever an old device comes in for service you need to identify the soft
9. Date Initial release Mr A Weiss 20 05 2003 Updating amp adding photos and texts for device 2106 Mr N Ben Shalom 28 04 2010 disassemling steps L93101B0 A Section 5 Page 1 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 51 Disassembling the Device Step A Removing the cover 1 Turn the device upside down on a clean soft surface 2 Remove all the 8 screws arround the circumference 3 Turn back the device and open the cover as shown in step B Step B Disconnect the two flat cables from the main board cover Step C Cable ties 1 Before cutting all the ties that hold together the hoses and the wires learn them carefully 2 Cutall the cable ties L93101B0 A Section 5 Page 2 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Step D Removing the electro pneumatic control assembly Disconnect the wires and the hoses as follows 1 The wires coming from the power supply board The wires from the PCB to the relay The wires coming from the D connector The wires from the fan gt N The pressure hose 1 from compressor 6 The vacuum hose 2 from the compressor 7 The inlet hose 3 from the filter 8 The two sensor hoses 4 from the PCB 9 The 12 hoses 5 from the female connector Step E
10. Mego Afek AC Ltd Maintenance Manual Data Line Figure 1 2 Control Panel and Display Window The display window shows the Header Line describing your present location within the program The Data Line is where you choose your setting All data is entered by means of the four keys on the panel The UP and DOWN keys scroll throughout the setting options The ENTER NEXT key inputs your setting and moves on to the next programming step The START STOP key activates the device initiating and halting the treatment cycle Figure 1 3 Fuse Insertion Power cord PC communication cord Use only the provided red tagged cord Figure 1 4 Power Cord and PC Communication Cord L93101B0 A Section 1 Page 5 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Section 2 Theory of Operation Table of Contents 2 1 MEER 2 2 2 Electric Pneumatic System 2 2 3 Theory of Operation s isccscscssssenscssccssccessonscsssascecesesonsessonssiencesosbessiesescosesessesssussceooesensnssiesesces 4 2 4 Safety Precautions cccsicsecdesssvacsserecestesseuncssiuaceetedsevnsssoncacsdenssonssssuaecsdetsesesessvsocsdeaseueessdeeesonsee 4 2 41 Sabet ye Valve ext a ioni nie i Circ genre Sig ree ioca ede ce ae Er ore Pere ERA 4 2 4 3 Normally Open Valve System 4 2 4 3 W
11. R 115V 120mm L26D120D Grounding wire R R 230V 120mm L6010300 Screw M4 x 30 L26860B0 Fan Assy L6110308 Pan head screw M3x8 L3650001 Relay SPDT 12V L3627005 Main Switch L3672041 Fan Guard 40mm L6110200 Pan head screw W5 32x3 8 L6110480 Pan head screw M4x8 L32521A1 Bumper L6110300 Pan head screw 4 20 L6045013 Washer 5X13X1 mm L3752015 Rubber Leg L93101B0 A Section 6 Page 8 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Sensor B Sensor A Vacuum 9 8 SensorA 7 Je eec 9e e 10 Sensor B SE From filter V To compressor inlet Figure 6 5 Distributor and Main Board Assembly L93101B0 A Section 6 Page 9 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Table 6 4 Distributor amp Main Board Assembly Parts List L2D003BL Main Board LP Plus SPS L2D003BB Main Board B Pro SPS L3118222 Spring L24B300A Hose 4 7 300 mm L5910610 Silicon hose 6 10 L39020BO0 Distributor Bracket LP Plus B Pro L6034015 Flat head screw 4 15 L6040700 Conic Washer 3 5 L29100BO0 Distributor Assy LP Plus B Pro L6230308 Screw M3x8 Integral spring washer L3415121 Air Filter L9600300 Secure Strap 310 x 5 mm L93101B0 A Section 6 Page 10 Mainten
12. Silicone hose 6 10 430 mm 1 A 6 13214121 Sponge hose 10 25 40 mm 2 7 6 4 4 05910610 Silicone hose 6 10 430 mm 1 ali 8 L3420001 Silencer 1 8 BSPT 1 9 6 4 3 L24B300A Hose 4 7 300 mm 2 Y L93101B0 A Section 6 Page 14 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Section 7 Maintenance Table of Contents 7 1 erc pr Mee 2 7 2 Inspection and Maintenance Schedule 2 7 3 Bini 2 7 4 Special Tools and Test Equipment 3 7 4 1 Standard Testing and Calibration Sets 3 7 4 20 PC program Identifying Software 4 DAS program Send Default luni Ree hee uela ien endet nnn 4 7 5 Technician Parameters and Calibration Procedure 5 7 5 1 Technician Parameters and Calibration Menu iii 5 7 5 2 Technician Parameter kii u l l aa l maut enka uuu Sa 6 7 5 3 Calibration Procedure us ER S CET om RR RYE CA en EUR ERR 7 7 6 Safety Electrical Tests a S enne Pre Enna eo En EN stessasnsstencedsenssdsessseess 8 Tol Dielectric Testo ete teret tee Error Bookmark not defined 7 6 2 Grounding Co
13. cell before it starts filling the next cell even though the cell has already gained the required pressure The default value is 20x100ms 2 seconds Making it shorter may create a quicker cycle for Lympha and Wave if the cells of the sleeve are small enough but may in some circumstances provide less effective treatment to the limb Maximum time for filling a cell Bag Time This parameter reinforces the maximum time that the system stays on a cell before it stops the treatment displaying Pneum Fault on the screen This announcement means mostly that there is a leakage somewhere in the system see Troubleshooting The default value is 70 seconds If you get this announcement and you have determined that there is no leakage it may also tell you that the compressor is getting weak In this case if the problem occurred at the customer s location and it is urgent that you get the device operational until you replace the compressor increasing this value can help Pause time between steps Mix Pause This pause allows the patient to feel that a step of the treatment has ended and the next step is about to begin The default value is 5 seconds Scanning pressure Scan Pressure This value establishes the pressure at which the device performs the scanning for plugged cells displaying 1 for an open cell and 0 for a plugged one The default value 15 120 mmHg Increasing this value may give 0 for an open cell and decrea
14. 1B0 A Section 6 Page 1 Maintenance Manual Mego Afek AC Ltd Lympha Press Plus amp Ballancer Pro Main Assembly Figure 6 1 Page 2 Section 6 L93101B0 A Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Table 6 1 Main Assembly Parts List L27CO2BO Lympha Press Plus Cover Assy Including labels and L27C02B1 Ballancer Pro Cover Assy buttons L27BO0B1 Base Assy L27B00B3 Base Assy 220V L6060400 Spring washer 4mm L6030100 Screw M4 X 10 L93101B0 A Section 6 Page 3 Afek AC Ltd Lympha Press Plus amp Ballancer Assembly Figure 6 2 Cover L93101B0 A Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Table 6 2 Cover Assembly Parts List L27C02B0 L27C02B1 L37220B1 L37220B2 L2D002B0 L6220306 L26200B0 L37551B0 L2D000B0 Lympha Press Plus Cover Assy Ballancer Pro Cover Assy Round button 2 Triangular button 2 Control Board Assy 1 JV Screw M3x6 Integral tooth washer 9 Control Flat Cable Assy 1 Transparent Window 1 JV Display LCD for B Pro LP Plus 1 ali L93101B0 A Section 6 Page 5 Maintenance Manual Mego Afek AC Ltd Lympha Press Plus amp Ballancer Pro Figure 6 3 Base Assembly 1 Page 6 Section 6 L93101B0 A Lympha Pre
15. 6 6 3 29 L26860BO0 Fan Assy 1 A 7 L26161BE Bundle E Relay control 1 Part of Distributor Assy 8 L26161BC Bundle C Main Switch to Relay amp PS 1 9 6 3 30 L3627005 Switch 1 J 10 63 29 L3650001 Relay SPDT 12V 1 y 11 L26161BB Bundle B Filter to Main Switch 1 12 163 24 L22000B3 Compressor Assy 230V j J L22000B0 Compressor Assy 115V 13 L26161BA Bundle Power Inlet to Filter 1 14 6 3 23 L2D004B0 Filter Board 1 y L93101B0 A Section 6 Page 12 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 1 2 2 3 4 5 D o 6 COMPRESSO n H m mimm _ Kms ri DISTRIBUTOR B e 0 o mm mu MM MA m m o FEMALE CONNECTOR SI E 9 9 8 7 6 x2 Figure 6 7 Pneumatic Diagram L93101B0 A Section 6 Page 13 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Table 6 6 Pneumatic Parts List ID Table Part Part No Description Qty Recommended SRU 1 6 4 10 L3415121 filter 1 2 6 4 z L3118222 Spring 2 3 L3420002 Silencer 1 4 BSPT 1 4 6 4 4a L5910610 Silicone hose 6 10 550 mm 1 ali 5 6 4 4b L5910610
16. ance Manual Mego Afek AC Ltd Lympha Press Plus amp Ballancer Pro compressor z Brown Blue Figure 6 6 Wiring Diagram Page 11 Section 6 L93101B0 A Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Table 6 5 Wiring Parts List ID Table Part Part No Description Qty Recommended SRU 1 6 3 18 L26160B0 Communication Bundle 1 L26D050D Grounding wire 230V 50 mm I L26C050D Grounding wire R R 115V 50 mm T 1 L2D003BL Main Board LP Plus SPS J L2D003BB Main Board B Pro SPS 4 L26161BD Bundle D Power Supply to Main Board 1 5 6 3 2 L2D002B1 Switching Power Supply RPS 60 15V 1 Y
17. atch Oe a a Wu sa tmo tr enr I Ee Casas bal 4 244 Stopping the Devices ueniet ee UE ett e Uti e e ee 4 2 4 5 Single Connection Option iud Re Coe HORE Re tede eee Ie En 5 2 4 6 Air Cell Identification NUMbErS nana 5 247 Overload Protection Fuse ua e Rr RPSL ERR echa EU RR eR 5 2 5 Performance Verification Test Procedure 6 Table of Figures Figure 2 1 Electro Pneumatic Diagram sese nenne enne enne en 3 Figure 2 2 Hose Bundle Connector with Snap amp Red Arrow Positioning Mark 5 Figure 2 3 Numbered Air Hose Tips ansa eere ette oer t Ee ee Pete ede eite 5 List of Tables Table 2 1 Device Cycle Program Record Parameters eere 6 Section Control Log Page Approval Changes Summary Changed Approved by Date Initial release Mr A Weiss 20 05 2003 Update reference to the testing set figure in table 2 1 6 Mr A Weiss 14 09 2003 Update paragraph 18 in Electric pneumatic system 2 Mr N Ben Shalom 08 07 2007 Update Figure 2 1 Electro Pneumatic diagram 3 Mr N Ben Shalom 08 04 2010 Add Paragraph 21 in Electric pneumatic system 2 Mr N Ben Shalom 08 04 2010 Update Paragraph 2 4 5 amp Figure 2 2 amp its caption 5 Mr N Ben Shalom 28 04 2010 L93101B0 A Section 2 Page 1 Lympha Pre
18. ating Labels sub section Updating all Tables amp Figures 6 Mr N Ben Shalom 24 05 2010 Updating Safety Electrical Tests 7 Mr N Ben Shalom 01 06 2010 Updating Table 4 1 4 Mr N Ben Shalom 17 06 2010 Change of Authorized Representative in Europe 1 Mr Yaron Zarhi 05 01 2012 A Replacement of UL Label amp description with 3 Mr Yaron Zarhi 16 01 2012 CSA Label amp description Updating Safety Electrical Tests 7 Mr Shay Doron 09 02 2012 L93101B0 A Main Table of Contents a Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Section 1 General Description Table of Contents 1 1 Gentril e ER 2 1 2 Symbols and Conventions used in this Manual 2 1 3 M HA 2 1 4 Contact Information uu sa e a en qul ine n er D IH Ce eU UIS cL iR UU EUER CEU E M VER es CR 3 14 1 Mati fact tetios terrere e lows toe eire ed rege reve idee erret edes lege EO desde 3 1 4 2 Authorized Representative in Europe 3 1 4 3 Authorized Representative in 3 1 4 4 Authorized Representative in 4 1 5 Specification Sissis nu X 4 Table of Figures Figure Ll G n ral View su as u et scans a chivas SIINO u a EE n yu ha sa awas 4 Figure 1 2 Control Panel and Display
19. ce no red mark Replace CPU Disconnect the comunnication cable and press Start Stop button Bad connection or flat cable Check electrical connection and flat cable Figure 6 2 ID No 6 Defective switch Replace the control board assembly Defective main board Disconnected compressor Replace main board Check compressoer connections Defective relay Replace the relay Defective compressor Replace compressor L93101B0 A Section 4 Page 3 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Symptom Possible Cause Corrective Action An irregular vibration noise Transferring of vibrations to the Make sure the device is standing supporting surface on all its bumpers Something touching compressor Check and fix Distributor bracket is touching Check and fix the base Defective compressor Replace compressor Defective fan Replace fan During scanning the Kinked hose of the hose Check and fix display shows 0 for fora bundle connected cell Defective valve Replace distributor assembly The device halts and shows Pressure Fault message Defective main board Replace main board The device halts and shows Defective accessory Check customer s accessories for Pneum Fault message air leaks Leakage from female Check and replace O rings of the connectors female connectors Replace female connectors if necessary
20. eshooting Table of Contents 4 1 General sy ER 2 4 2 Troubleshooting Poo Pa Earn o ooo re on peo en Po ron nForce eps 2 4 3 How to Use the Troubleshooting Guide 2 4 4 Fault Isolation aaa 2 Table of Figures None List of Tables Fable 4 1 Froubleshooting Guide NE AEEA Ier e eet ed 3 Section Control Log Page Approval Changes Summary Chansed Approved by Date Initial release Mr A Weiss 20 05 2003 Updating Table 4 1 Fuses Corrective Action last 3 Mr N Ben Shalom 17 06 2010 paragraph to Power Supply Board replacement L93101B0 A Section 4 Page 1 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 4 1 General This section describes the procedures for troubleshooting the Lympha Press Plus and the Ballancer Professional to a specific Shop Replaceable Unit SRU Use the procedures when a problem or malfunction is detected during operation or during the testing procedures Warning Only an authorized technician should open the device and use the troubleshooting guide 4 2 Troubleshooting Guide The troubleshooting guide described in Table 4 1 is used when a problem or malfunction is detected during operation or during the test procedures The troubleshooting guide consists of the followi
21. he base of the device LCD backlight is working LCD letters are clear 3 Edit Step 1 as follows Programming keys are Cycle Wave functioning O K Pressure 60 mmHg Operating time 20 minutes Pause time 4 seconds 4 Operate the device and wait for 3 Complete No irregular noise cycles after the system has finished learning ALIS pressures UBER c ch gage is stabilized are in the range of 47 mmHg to 73 mmHg Each of the 12 cells deflates completely as the pressure wave advances and at the beginning of pause time 5 Press Start Stop button The device goes into deflating stage The device stops after deflation is complete 6 Turn off device None N A L93101B0 A Section 2 Page 6 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Section 3 Garments Table of Contents 3 1 The Garment Label mU 2 3 2 Garment PY PES eR ETE 2 3 3 Garment StrUcture e 3 3 4 Replacing Air Cells irre tee yer AE SS unie s tov eee hu a pina eene eon 3 3 5 Washing InstriictiOns ccisssissecccsssesscssassesnsssoncdsecnssevcesseecsvocessesecsssecessneseeseacsousssoonsasdendssessoose 4 Such xDOSSterIHZe xe toten sto Ee ees st NAE 4 3 6 Repair of Garment Zippers 4 Table of Figures Figure 3 1 Garment Identification Label
22. ial No MEGO AFEK KIBUTZ AFEK 30042 ISRAEL 1 Zipper Velcro K MAX 100 nylon fabric Garment label Rev 05 Figure 3 1 Garment Identification Label 3 2 Garment Types Garments for the Lympha Press Plus fall into three categories Zipper sleeve for all pressures Velcro sleeve for pressures up to 80 mmHg only Limb torso garments Medical overlapping pants Ballancer Pro Pants Ballancer Pants and Ballancer Jacket The medical garments and the Ballancer Pro Pants have three fastening points for adjustable fit L93101B0 A Section 3 Page 2 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 3 3 Garment Structure Garment Velcro strap Zipper or Velcro Bracket Air cell Plug used when inserting a cell Cabin of air cell Label cQ CON Figure 3 2 Garment Structure 3 4 Replacing Air Cells Note ES Single cells can be replaced in Zipper and Velcro leg arm sleeves Single cells in the pants and jacket cannot be replaced 1 Verify that the air cell should be replaced 2 Verify that the new air cell is identical 3 Completely deflate the faulty air cell 4 Push the air inlet of the faulty air cell against the sleeve with your thumbs pushing out the air inlet from its place 5 Pull out the faulty air cell see Figure 3 2 6 Inflate the new air cell 7 Lock the air in the air cell using the plug Figure 3 2 part 6 8 Place
23. info megoafek co il Web www megoafek com 1 4 2 Authorized Representative in Europe MedNet GmbH BorkstraBe 10 48163 Miinster Germany Tel 49 251 32266 60 Fax 49 251 32266 22 Web http www medneteurope com 1 4 3 Authorized Representative in USA Lympha Press USA 232 Park Avenue Manalapan New Jersey 07726 Toll free 888 L YMPHA 1 Tel 732 792 9677 Fax 732 792 9745 E mail info lympha press com Web www lympha press com L93101B0 A Section 1 Page 3 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 1 4 4 Authorized Representative in Canada Paradigm Medical Inc 100 Broadview Avenue Suite 302 Toronto Ontario M4M 3H3 Tel 416 362 0844 Fax 416 362 0729 Toll free 800 931 2739 1 5 Specifications Table 1 1 Dimensions Lympha Press Plus Ballancer Professional Height 140 mm 140 mm Length 410 mm 410 mm Width 340 mm 340 mm Net Weight 10 kg 10 kg Table 1 2 1033 Model Family Cat No Model Pressure Range Voltage Current Fuses L10002B1 1033 AL 115V 0 7A 20 120 mmHg L10002B3 1033 EL 230V 0 5A 2X1A L10002B2 1033 AB 115V 0 7A 20 80 mmHg L10002B4 1033 EB 230V 0 5A 32 f1 Power Switch lt lt e X Control Panel ER A v Figure 1 1 General View L93101B0 A Section 1 Page 4 Lympha Press Plus amp Pro
24. mable sequential compression therapy devices with compression garments Lympha Press Plus is for medical use only Ballancer Pro is for use by professional aestheticians Both offer a variety of treatment cycles This manual describes service and maintenance procedures for both devices For descriptions of device features and treatment cycles and for operation instructions please consult the User Manuals L98101B0 and L98101B1 If you have any questions or require any further information please contact us You can reach us at Phone 972 77 9084277 Fax 972 4 8784148 1 2 Symbols and Conventions used in this Manual Symbol Description Note Describes how Lympha Press Plus or Ballancer Pro functions or provides a note on how best to use it Caution Refers to the safe operation of Lympha Press Plus or Ballancer Pro and provides cautions where the possibility of loss of data or damage to equipment exists Warning Indicates a situation in which the operator or the patient may be in danger of injury or death PD 1 3 Labels The following labels and symbols appear on the pressure control unit compression garments and or packaging Label Description Location On model number and electrical data Read instructions before use label on base of pressure control unit E Read instructions before use On compression garment label Temperature limitations for storage and or On pressure contr
25. n the heat from the compressor 4 and Transformer 18 e No 17 D9 Connector enables PC communication with the Main Board 10 No 18 Switching Power Supply output 14 VDC No 19 PC communication cable specially made enables editing the device program No 20 Remote stop button optional enables the patient to stop the device without reaching the control panel 14 No 21 Line Filter to reduce emission level on the power line L93101B0 A Section 2 Page 2 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Pressure line High vol igh voltage Air outlets connected to female eta Low voltage receptacle Signals Air outlets connected to female receptacle Sensor Sensor A B Processor replaceable ik z 2 O O O O Up Down Enter Start PC communication cable Custom A Next Stop el Remote stop button Accessories 1033 2nd Electro pneumatic diagram mvd Figure 2 1 Electro Pneumatic Diagram L93101B0 A Section 2 Page 3 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 2 3 Theory of Operation 1 2 The compressor is turned on and off by means of the relay so that it can be completely controlled by the processor on the main board The distributor 15 divided into two sections and B
26. ng columns Symptom Describes problems and malfunctions that might be detected during operation or during test procedures Possible Cause Describes the most likely reasons for malfunction symptoms Corrective Action Details the maintenance procedures required to repair the device The maintenance procedures often lead to the replacement of one or more of the device Shop Replaceable Units SRUs 4 5 How to Use the Troubleshooting Guide When a malfunction symptom is detected start with the first possible cause and perform the first appropriate recommended action If the symptom persists perform the next recommended action and so on until the problem is solved IN Note Replace a defective SRU with one known to be operational for replacement Follow removal and installation procedures 4 4 Fault Isolation Listed below are a few reminders of basic fault isolation Check associated equipment connections Make sure that all connections are securely connected to the correct connector Before continuing check all accessories visually for any defects Visually check the interior of the device Inspect for evidence of overheating or short circuiting Check hoses and wires for good physical connections Look for such indications as cut wires charred components and loose leads Correct any discrepancies detected Try to isolate the problem to a specific unit by checking operation in all modes and referring to the disa
27. ns above to get the same number on the screen and gage then press ENTER d The screen now shows two A D values of the two sensors and their matching pressures 105 116 lt A D values 96 97 lt pressure mmHg e Checking the calibration accuracy Make sure that the pressures shown on the bottom row are within the range of 2 mmHg from the pressure gage f Release the pressure back to a low pressure 30 40 using the relief valve on the Calibration Set Check the accuracy for the low pressure too g If the calibration accuracy values for both high and low pressures are within the limits calibration is complete Press ENTER to return to Select Option RUN h If one or more of the values are not within the limits recalibrate the device starting from the beginning see Paragraph 7 5 L93101B0 A Section 7 Page 7 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 7 6 Safety Electrical Tests Perform safety electrical tests that are required in your country L93101B0 A Section 7 Page 8
28. ntinuity Test sse Error Bookmark not defined 7 6 3 Earth Leakage Error Bookmark not defined Table of Figures Figure 7 1 Testing Set 12 Pressure gauge Board and Hose Bundle sess 3 Figur 7 2 Calibration Seta cortina dla ela Sa ai ner anali 3 Figure 7 3 Version Check Program e 4 Figure 7 4 AutoDefault Program Tocsin eneren enti inrett vE EEE EE EEE E ESE E 4 Figure 7 5 z AutoDefault Program 2 meises rne e rts et UR ML REEE EERE HE 5 List of Tables None Section Control Log Page Approval Changes Summary Changed Approved by Date Initial release Mr A Weiss 20 05 2003 Adding NOTE about annually calibration of test 3 Mr A Weiss 14 09 2003 equipment Adding figure 7 1 of testing set 3 Mr A Weiss 14 09 2003 Update references to the testing set fig and other 7 Mr A Weiss 14 09 2003 figures Updating Safety Electrical Tests 8 Mr N Ben Shalom 01 06 2010 Updating Safety Electrical Tests 8 Mr Shay Doron 09 02 2012 L93101B0 A Section 7 Page 1 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 7 1 General This section provides instructions and procedures for maintenance of the device including inspection cleaning calibration and electrical performance test Warning Only an authorized technician should use the instructions and perform the procedures listed below 7
29. o recognize the version without opening the device see Paragraph 7 4 2 PC program Identifying Software Version 2 4 Safety Precautions 2 4 4 Safety Valve The line of the pressure that comes from the compressor is protected by a mechanical Safety Valve 7 that does not allow the pressure in the device to rise over its value Sometimes the Safety Valve will be audible while working 2 4 2 Normally Open Valve System Normally Open Valve System means that in case of electric breakdown or power failure all valves will open letting out the air pressure from all the cells of the garments and allowing the garments to passively deflate 2 4 5 Watchdog In case of any malfunction in the program Software an electronic safety device called Watchdog will identify the problem and stop the treatment immediately allowing the air pressure to deflate from the garments The device will return to Main menu RUN 2 4 4 Stopping the Device To stop the device at any time during treatment press the Start Stop button or the Remote Stop button The device will start deflating the garment In case the device continues inflating shutting down the ON OFF switch will open all the valves allowing the air pressure out of the garments L93101B0 A Section 2 Page 4 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 2 4 5 Single Connection Option The hose bundle connector is shaped asymmetrically and feature
30. ol unit carton p ackase transport of the pressure control unit p P Level of protection BE eauioment On model number and electrical data x P YP label on base of pressure control unit ud Manufacturer s name and address On compression garment label 2 0 0 8 i Date of Manufacture On base of pressure control unit L93101B0 A Section 1 Page 2 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Label Description Location Separate collection for waste electrical and electronic equipment On bottom of pressure control unit Warning on Ballancer Pro only for USA On front of pressure control unit near the power switch CE label showing compliance with EC Directive 93 42 EEC Medical device directive On the technical information label ZA P MASTER CONTRACT 244728 CSA c us Certification with respect to electric shock fire and mechanical hazards only in accordance with CAN CSA C22 2 No 601 1 M90 1 2 and UL 60601 1 1st Edition On back of pressure control unit Ballancer Pro Model 1033 EB Serial No 0618 0 5 Amp 230v 50 Hz A sa Serial number of pressure control unit On back of pressure control unit near the power connector 1 4 Contact Information 1 4 4 Manufacturer Mego Afek AC Ltd Kibbutz Afek 30042 Israel Tel 972 77 9084277 Fax 972 4 8784148 E mail
31. programmed with the default program 7 5 Technician Parameters and Calibration Procedure This section describes special technician settings and their uses It also describes how to calibrate the device 7 51 Technician Parameters and Calibration Menu To enter the menu press and hold both UP and ENTER NEXT keys for five seconds You will see this screen Enter PassWord You need to contact the factory to receive your password Enter your password You will see this screen Calib MODE NO Selecting NO using NEXT ENTER key brings you to the Technician Parameter List 7 5 2 Changing NO to YES using UP key and then pressing the ENTER NEXT key brings you to the calibration procedure screen 7 5 3 N Note ES Once you enter the calibration procedure you have to perform the calibration 1 to enter the pressure values properly Otherwise the device will get out of calibration L93101B0 A Section 7 Page 5 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual 7 5 2 Technician Parameter List On each of the following screens you can change the value of the parameter using the UP or DOWN keys Pressing the NEXT ENTER key will accept the value on the screen and move you to the next parameter as follows Vacuum value for deflating Vacuum A D Val The active deflation at the end of treatment will stop and switch the device back to Run option only
32. s a positioning mark This is in order to ensure correct connection to the device Figure 2 2 Hose Bundle Connector with Snap amp Red Arrow Positioning Mark 2 4 6 Air Cell Identification Numbers Identification numbers are affixed to the air hose tips to enable the operator to ascertain the proper inflation order Figure 2 3 Numbered Air Hose Tips 2 4 7 Overload Protection Fuse The device is equipped with two overload protection fuses to protect in case of a short circuit see Figure 1 3 L93101B0 A Section 2 Page 5 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 2 5 Performance Verification Test Procedure To verify that the device is operational and that it meets its performance specifications If malfunctions are detected during Test Procedure refer to Troubleshooting Section 4 Note customer with customer settings restored Table 2 1 Device Cycle Program Record Parameters Always record the device cycle program parameters before making any changes for testing diagnostic purposes Unless otherwise specified device must be returned to No Instructions Comments Parameters Tested Test Results 1 Connect the right pressure outlet of device to None N A the Standard Testing Set see Figure 7 1 Plug the second air outlet 2 Turn on the main switch Main switch illuminates The fan exhausts air downward from t
33. sing the value may give 1 for a plugged one L93101B0 A Section 7 Page 6 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Total operating time counter This option is for device rentals The display shows 20 25 Reset NO o The digits to right of the colon represent X 100 of an hour e g 25 25 100 of an hour i e 15 minutes This method of reporting enables easier cost calculations o Choosing by pressing NEXT ENTER key will return you to the main menu RUN o Changing NO to YES using UP key and then pressing ENTER will reset the counter to 00 00 and then bring you back to the main menu RUN The counter can up to 999 99 hours before starting from the beginning 7 5 3 Calibration Procedure Prior to calibrating the device connect the right side of the female connector to the special Calibration Set See Figure 7 2 Make sure that its pressure gage has a valid calibration certificate a Follow the steps indicated by the screens below Calib MODE UP gt Calib MODE gt ENTER NO YES ENTER Pressure 25 b The device now starts to inflate the cells to low pressure If pressure on gage is different from 25 mmHg change the number on the device screen to the real pressure using UP or DOWN keys Press ENTER when the screen and the gage show the same number ENTER Pressure 90 c Repeat the instructio
34. ss Plus amp Pro Mego Afek AC Ltd Maintenance Manual 5 4 4 4 Figure 6 4 Base Assembly 2 Table 6 3 Base Assembly Parts List 1 L37071BO0 Base Bracket 1 L2D002B1 Switching Power Supply RPS 60 15V 1 y L6220306 Screw M3x6 Integral Tooth Washer 6 L29000B0 LPP Electro Pneumatic Control Assy L29000B1 Bal Pro Electro Pneumatic Control Assy L6060400 Spring washer 4mm 16 L6110460 Pan head screw M4x6 4 L6106000 Lock Nut M6 2 L93101B0 A Section 6 Page 7 Lympha Press Plus amp Ballancer Pro Maintenance Manual Mego Afek AC Ltd L26D050D Grounding wire R R 230V 50 mm L26C050D Grounding wire R R 115V 50 mm L6100300 Lock nut MA L6040600 Tooth washer 4mm L26D080E Grounding wire F R 230V 80 mm L26C080E Grounding wire F R 115V 80 mm L6016030 Allen screw M6x30 L6030200 Screw M2 5x30 L2300121 Female Connector Assy L6100100 Nut M2 5 L37110B0 Bracket for female connector LP L6030100 Screw M4 X 10 L26160B0 Communication Bundle LD0J0002 Screw 4 40 for D type Connector L36651A4 Fuse S B 2A 5X20 L6170360 Screw M3x 6 L3646002 Twin Fused Power Inlet L2D004B0 Filter Board L22000B3 Compressor Assy 230V L22000B0 Compressor Assy 115V L26C120D Grounding wire R
35. ss Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 21 General An air compressor in the unit distributes air pressure through a series of hoses The hoses are connected to a garment containing air cells which apply the pressure to the body part being treated The Lympha Press Plus and Ballancer Pro each have five different massage cycles which can be combined to create individualized treatment programs Please see the Lympha Press Plus User Manual Cat No L98101B0 or the Ballancer Pro User Manual Cat No L98101B1 for descriptions of the cycles and the various treatment parameters set by the operator for each cycle 2 20 Electric Pneumatic System See Figure 2 1 No 1 power cord receptacle with 2 fuses e No 2 Main Switch illuminate No 3 Relay switches the compressor No 4 Compressor supplies the air pressure e No 5 Distributor controls the device cycle No 6 Silencer 1 8 e No 7 Pressure over load e No 8 Silencer 1 4 No 9 Check Valve No 10 Main Board controls the entire system and safety functions e No 11 Pressure sensors on the main board e No 12 Processor replaceable on the main board No 13 Flat cable assembly connects the control panel 14 to the Main board 10 No 14 Control board with four keys UP DOWN ENTER NEXT START STOP No 15 Display assembly with integral flat cable No 16 Fan cools dow
36. ssembling procedures Warning Before replacement of any SRU remove the electric cord from the power supply L93101B0 A Section 4 Page 2 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual No power The main switch does not illuminate The power switch light goes on but the LCD does not or without backlight Invalid LCD display Characters Pressing a button has no expected response The device starts initializing the system series of clicks but the compressor does not turn on Table 4 1 Troubleshooting Guide Symptom Possible Cause Corrective Action No electricity Check the power outlet Power cord Check power cord visually for any defects Internal disconnection Check and fasten internal electrical connections Fuses Bad connection or flat cable Check the fuses and replace if necessary Replace fuses only with fuses of same type and rating Check wiring according to wiring diagram see Figure 2 1 amp Figure 6 6 Disconnect the compressor and turn on the device If O K replace compressor If not check and replace Filter Card or Power Supply Board Check electrical connection and flat cable Defective LCD Defective LCD Check and replace LCD assembly if necessary Check and replace LCD assembly if necessary CPU problem For Start Stop button only Using a comunnication cable other than that supplied with the devi
37. the new air cell in the cabin 9 Place the air inlet to the right hole see Figure 3 2 10 Push the air inlet into the hole using your thumbs Position the air inlet correctly 11 Disconnect the plug and empty the air cell L93101B0 A Section 3 Page 3 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual 3 5 Washing Instructions Caution Zipper and Velcro leg arm sleeves can be washed The pants and jacket garments CANNOT be washed and must be surface cleaned ONLY See the User Manuals for surface cleaning instructions 1 Remove the air cells from the sleeve Do not wash the air cells For removal instructions see Paragraph 3 4 Replacing Air Cells 2 Gently hand or machine wash in lukewarm water using normal detergent or soap powder not exceeding 40 C 100 F 3 Drip dry only When dry the sleeve may be wiped over with antiseptic lotion alcohol or cream 5 Return air cells to sleeve only after making sure that the sleeve is totally dry inside and outside 3 5 1 To Sterilize See User Manuals for instructions Warning DO NOT Autoclave dry clean hand or power wring iron tumble or force heat dry Figure 3 3 View of Velcro Sleeve 3 6 Repair of Garment Zippers Garment zippers may be repaired Please contact us for specific instructions L93101B0 A Section 3 Page 4 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Section 4 Troubl
38. unding wire see Figure 6 3 ID 16 StepM Removing the Switching Power Supply The Switching Power Supply is fixed with four screws Before removing disconnect its wire connectors Step N Removing the Fan Guard The Fan is fixed with four screws and self locked nuts Use a 7 mm socket wrench to release the self locked nuts Step Removing the Fan Use a 3 mm hex driver to release the screws that fix the fan L93101B0 A Section 5 Page 5 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual Step P Removing the Line Filter The Line Filter is fixed with 3 screws Before removing disconnect its wire connectors 5 2 Reassembling the Device After replacing the required SRU reassemble the device in reverse order Connect all electric and pneumatic connectors according to the diagrams in Figure 2 1 Figure 6 6 amp Figure 6 7 Make sure to tie all wires and hoses as shown in the pictures above IN Note Safety electrical tests see Paragraph 7 6 should be performed whenever an electrical reassembly of the high voltage circuit takes place L93101B0 A Section 5 Page 6 Lympha Press Plus amp Ballancer Pro Mego Afek AC Ltd Maintenance Manual Section 6 Parts List Table of Contents None Table of Figures Erigure 6 L Matn Assembly cod ier etre eere pre re eie re ee u ae E GP aa ne eee 2 Eigure 6 2
39. ware version Although the version is written on a label affixed to the Main Board see Paragraph 5 1 Step J there is a much easier way to obtain this information without opening the device a Connect the device to your PC using our special PC communication cord supplied with the device b Turn On the device and select the PC Communication option c Open the Version Check program see Figure 7 3 x Version Check Communication Exit Figure 7 3 Version Check Program d Press Version Check The software version number appears on the screen e If you receive an error message try selecting another COM using the Communication button 7 43 PC program Send Default When there is a need to reset the program of the device to the default factory parameters use the AutoDefault program a Connect the device to your PC using our special PC communication cord supplied with the device b Turn On the device and select the PC Communication option c Open the AutoDefault Program see Figure 7 4 x Com Parameters Exit Figure 7 4 AutoDefault Program 1 d Press Send Program L93101B0 A Section 7 Page 4 Lympha Press Plus amp Pro Mego Afek AC Ltd Maintenance Manual x Ver 1 8 10B Com Parameters Exit Figure 7 5 AutoDefault Program 2 e The software version number appears in the window informing you that the device has been
40. when the processor gets this value from the pressure sensors The default value is 12 If the device stops the deflation before the garment has completely emptied increasing this value may help Maximum excess pressure Emrgn Pressure This parameter sets the maximum pressure in excess of the requested pressure allowed by the device When the system reaches the limit set by this maximum excess pressure value it stops the treatment and displays Pressure Fault on the screen The default value is 60 mmHg The most common reason for this error is a kinked hose bundle or a faulty valve in the distributor Gradient pressure along the sleeve Delta Pressure This parameter enables the user to set a constant pressure gradient along the sleeve from distal to proximal according to medical needs The default value is 0 mmHg which means no gradient When a different delta pressure value is given Cell No 1 will attain the requested pressure while the pressure for Cell No 2 will be lower by the value chosen for Delta Pressure Cell No 3 will be lower than Cell No 2 and so on When the cell pressure reaches 20 mmHg all the following cells will be set to 20 mmHg until the last cell No 12 For example if the user requests pressure 60 with Delta 5 the pressures will be 60 55 50 45 40 35 30 25 20 20 20 20 Minimum time for filling a cell Min Fill Time This parameter reinforces the minimum time that the system stays on a
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