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Mettler Electronics Sonicator Plus 992, Руководство по обслуживанию

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Mettler Electronics Corp.

62

Содержание Sonicator Plus 992

Страница 1: ...th Claudina Street Anaheim CA 92805 U S A US Toll Free 800 854 9305 Telephone 1 714 533 2221 FAX 1 714 635 7539 Mettler Electronics World Wide Web Site http www mettlerelec com IR7 95 April 1999 Copyright 1999 by Mettler Electronics Corp Anaheim CA ...

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Страница 3: ...rasound Set up Procedure 34 8 6 Combination Therapy Set up Procedure 36 8 7 Electrode Positioning 39 9 Maintenance and Troubleshooting 41 9 1 Cleaning the Sonicator Plus 992 41 9 2 Routine Maintenance 41 9 3 Troubleshooting the Sonicator Plus 992 41 10 Test And Calibration Procedure 45 10 1 Required Equipment 45 10 2 Preliminary Tests 45 10 3 Diagnostic Tests 46 10 4 Ultrasound Output Tests 48 10 ...

Страница 4: ...Applicator 3 3 MHz ME 7331 Three Dimensional Beam Pattern 16 3 8 Interferential Waveform Sine Wave 17 3 9 Premodulated Waveform 17 3 10 Medium Frequency Waveform Russian 18 3 11 Biphasic TNS Waveform 18 3 12 High Volt Waveform 19 3 13 Microcurrent Waveform 19 6 1 Sonicator Plus 992 Block Diagram 26 7 1 Sonicator Plus 992 Rear view Mains Power Switch and Line cord connections 28 7 2 Sonicator Plus ...

Страница 5: ...by ordering them from the factory as an alternative to returning the complete system This manual is intended for service technicians who perform preventive and corrective maintenance on medical devices using appropriate electronic test and measurement equipment It should be read in its entirety before attempting to service the Sonicator Plus 992 For technical assistance call our Service Department...

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Страница 7: ...nput either time in seconds or microseconds or frequency in Hz The time or the frequency will be displayed in the numeric time display Treatment Status Indicator 1 2 Channel display indicator and selector Ultrasound display indicator and selector 1 Numeric keypad for time frequency or phase duration entry Starts treatment and stimulation or ultrasound output Stops treatment for the treatment displ...

Страница 8: ...eform selector LED is illuminated when this function is activated High volt waveform selector LED is illuminated when this function is activated Microcurrent waveform selector LED is illuminated when this function is activated µs Phase duration control selector Press this button during a biphasic TNS treatment to display phase duration Hz Frequency control selector Press this button during a stimu...

Страница 9: ...ors are lit to define which output intensity is being displayed in the two windows V mA W µA W cm mA LED indicators are lit to show the measurement units of the output intensity being displayed in the window Output intensity control knob rotate knob clockwise to increase output and counterclockwise to decrease output I Mains On O Mains Off Attention consult instruction manual Type BF Equipment Cla...

Страница 10: ...ed for combination therapy Display will move to the right when the outputs are active Medium frequency Russian waveform selected Display will move to the right when the outputs are active Medium frequency Russian waveform selected for combination therapy Display will move to the right when the outputs are active Biphasic TNS waveform selected Display will move to the right when the outputs are act...

Страница 11: ...move to the right when the outputs are active 2 3 List of Abbreviations cm Square centimeters Hz Hertz pulses per second LED Light Emitting Diode MHz Megahertz 1 x 106 cycles per second µA Microampere 1 x 10 6 ampere µs Microsecond 1 x 10 6 second mA Milliampere 1 x 10 3 ampere ms Millisecond 1 x 10 3 second min Minutes s Seconds S N Serial Number V Volts W Watts W cm Watts per square centimeter ...

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Страница 13: ... x 14 5 in W x 10 in D 12 7 cm H x 36 8 cm W x 25 4 cm D Operating Temperature 50 F to 104 F 10 C to 40 C Humidity Operating 30 to 75 Relative Humidity at 104 F 40 C Nonoperating 5 to 95 Relative Humidity non condensing Storage Temperature 40 F to 167 F 40 C to 75 C Storage Humidity Storage 30 to 90 Relative Humidity at 40º C Non condensing Storage Pressure 700 900 mB Environmental Disposal The de...

Страница 14: ...ral Peak average intensity ratio 5 1 20 20 duty cycle 2 1 20 50 duty cycle Maximum output power 22 W with a 10 cm applicator ME 7310 11 W with a 5 cm applicator ME 7513 2 2 W with a 1 cm applicator ME 7331 Maximum intensity 2 2 W cm with all applicators Indication accuracy 20 for any level above 10 of maximum Output description The output waveform is continuous or pulsed as programmed by the membr...

Страница 15: ...7513 1 or 3 2 MHz 5 5 cm 10 Maximum Beam Non Uniformity Ratio 6 1 Maximum Effective Intensity Ratio 2 1 Spatial Pattern The applicator produces a collimated cylindrical beam with an area of 1 5 or 10 cm measured 5 mm from the ceramic disc surface when the radiation is emitted into the equivalent of an infinite medium of distilled water at 30 C The beam of the applicator is circular in all planes p...

Страница 16: ...p 16 Figure 3 5 5 cm Applicator 1 MHz ME 7513 Three Dimensional Beam Pattern Figure 3 6 5 cm Applicator 3 2 MHz ME 7513 Three Dimensional Beam Pattern Figure 3 7 1 cm Applicator 3 3 MHz ME 7331 Three Dimensional Beam Pattern ...

Страница 17: ...ny value from 1 to 250 Hz Phase Duration 125 µs Available Amplitude Modulation Options Vector rotation Available Channels Channel 1 2 Premodulated Mode Figure 3 9 Premodulated Waveform Waveform Type Amplitude modulated sine wave Polarity None Volts 0 50 volts RMS 1 Kohm load Current 0 50 mA RMS 1 Kohm load Average current at maximum intensity and frequency 50 mA RMS Maximum current density under 2...

Страница 18: ...uency Modulation No Phase Duration 200 µs Available Amplitude Modulation Options Continuous Surge Reciprocation Available Channels All Biphasic TNS Mode Figure 3 11 Biphasic TNS Waveform Waveform Type Symmetrical biphasic square wave Polarity None Volts 99 volts peak 1 Kohm load Current 0 99 mA peak 1 Kohm load Average current at maximum intensity and frequency 7 2 mA Maximum current density under...

Страница 19: ...ration 8 µs at 50 Vmax Polarity Positive or negative Available Amplitude Modulation Options Continuous Surge Available Channels Channel One only Microcurrent Mode or Figure 3 13 Microcurrent Waveform Waveform Type Monophasic or biphasic square wave Polarity Positive or negative or biphasic pulses Volts 1 Volt peak 1 Kohm load Current 10 990 µA peak 1 Kohm load Average current at maximum intensity ...

Страница 20: ...nds on 10 seconds off 10 seconds on 20 seconds off 10 seconds on 30 seconds off 10 seconds on 40 seconds off 10 seconds on 50 seconds off 10 seconds on 60 seconds off Programmable On time 1 240 seconds Programmable Off time 1 240 seconds Reciprocation mode Premodulated Medium Frequency and Biphasic TNS Pulsed Modes Up and down ramps 1 second reciprocation only Reciprocation time 2 240 seconds On t...

Страница 21: ...HAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS EXPOSURE TO ELECTRICAL ENERGY 7 Do not operate the Sonicator Plus 992 in close proximity with operating shortwave or microwave diathermies 8 Replace line fuses with same type and rating as specified in the list of specifications and on the printed circuit board next to the fuses to avoid risk of fire and component damage 9 Primary circuit componen...

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Страница 23: ...teen Phillips head screws There are two printed circuit boards in the Sonicator Plus 992 the main circuit board with the displays and the power supply board The power supply board holds the two primary fuses Each of these subassemblies is described in the Theory of Operation section of this manual The membrane touch control panel incorporates multilayer laminated design pushbutton switches with in...

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Страница 25: ...sor an MC68HC11 microprocessor operating at 8 MHz executes instructions contained in read only memory It scans the keyboard for user inputs and executes instructions in response to these user inputs It communicates with two other microprocessors which are used to generate the actual waveforms These waveforms are programmed into the second microprocessor s read only memory All signals are digitally...

Страница 26: ...tor Channel 1 Stimulation Output Connector Input Receptacle Line Filter Assembly Membrane Switch Panel Main Board Assembly DC Power Supply Power Cord Sonicator Plus 992 System Block Diagram Ultrasound Output Connector Fan Figure 6 1 Sonicator Plus 992 Block Diagram ...

Страница 27: ...all connections are dry before attempting to connect them Please Note The applicator model 7513 comes standard with the Sonicator 992 Other applicators that may be used with the Sonicator Plus 992 are the models 7305 7331 7310 and 7335 Verify that the applicator is labeled for use with the Sonicator Plus 992 before attaching it to the unit This information is contained on the applicator label 5 Pl...

Страница 28: ...or Plus 992 Back View Mains Power Switch Line Cord Connection and Applicator Clamp Electrode Cable Connections Applicator Cable Connection Figure 7 2 Sonicator Plus 992 Front View Electrode Cable and Ultrasound Applicator Connections Figure 7 3 Connecting the Applicator to the Universal Applicator Cable ...

Страница 29: ...self adhesive electrodes 3 Make sure that the entire surface of the electrode is contacting the patient 4 Do not use moist hot packs to secure electrodes 5 To avoid skin irritation due to high current density do not use electrodes smaller in surface area than the 2 5 1 cm in diameter EZ Trode self adhesive electrode ME 2221 6 Do not use conductive carbon electrodes with this product 7 Whenever cli...

Страница 30: ...or electrical stimulation connect electrode cables ME 2260 into the electrode connections for the channels that are going to be used f Note Descriptions of the symbols used on controls are in Section 2 8 3 General Set up Procedure 1 Turn on the mains power switch by pressing I icon on switch 2 When you first turn the Sonicator Plus 992 on the LED s for treatment selectors will flash NOTE This is h...

Страница 31: ...splay will show 10 Adjust treatment output intensity by rotating the knobs clockwise to increase output and counterclockwise to decrease output 11 Use this button to stop the treatment output that is currently being displayed by the Sonicator Plus 992 All treatment parameters will still be as you programmed them For ultrasound the output intensity will also be remembered For stimulation you will b...

Страница 32: ...and polarity or for each waveform 1 15 Hz 80 150 Hz 1 150 Hz Hz Hz 1 2 Hz Interferential Choose from preset frequency modulation programs 1 15 80 150 or 1 150 Hz or Pick Hz1 Hz2 to set your own static frequency or frequency sweep range Enter values for each frequency using the numeric keypad followed by the key The frequency is displayed in the timer window and the Hz LED is lit 1 15 Hz 80 150 Hz ...

Страница 33: ...onger rest times Interferential Continuous Premodulated Continuous Surge and Reciprocation Medium Frequency Russian Continuous Surge and Reciprocation Biphasic TNS Continuous Surge and Reciprocation High Volt Continuous and Surge Microcurrent Continuous 10 10 min s s µs Hz Surge Mode Press Surge selector until you see the On Off duty cycle that you would like to use Press the key to accept the val...

Страница 34: ...he current is on with an amplitude modulation function Adjust intensity down any time during the On time NOTE 1 For the surge mode adjust the output intensity for the active channels and then press to start the Surge cycle The timer will then begin counting NOTE 2 For the reciprocation mode adjust the intensity for Channel 1 and then press Then adjust the intensity for Channel 2 and press 10 In th...

Страница 35: ...atment and stop at 30 minutes 1 MHz 3 MHz 4 If you have the dual frequency 5 cm applicator attached press this key to select the output frequency The 10 cm applicator will light up the 1 MHz LED and the 1 cm will light up the 3 MHz LED W W cm 5 Press this key to select either Watts or Watts cm for the output display 100 50 20 6 Select the duty cycle for the ultrasound from continuous 100 or pulsed...

Страница 36: ...reatment press readjust output power for CE model 13 Notes on coupling Failure to efficiently transmit therapeutic dosages of ultrasound to the patient can be caused by the following a Treatment of an irregular area where it is impossible to keep the applicator surface in contact with the gelled patient area In this case you can try to use a little more gel or perform underwater treatment if the t...

Страница 37: ...icators will blink for channels that have already been programmed but are not being currently displayed To view the parameters for a channel whose indicators are blinking press the selector button You will then be able to view selected treatment parameters treatment output and time remaining or elapsed 3 Select the stimulation waveform that you would like to use Premodulated Medium Frequency Russi...

Страница 38: ...e treatment polarity The LED that is lit indicates the red lead wire s polarity Set Hz for the frequency 1 120 Hz Enter a numeric value followed by the key 5 00 min s s µs Hz 1 2 3 4 5 6 7 8 9 0 5 Input treatment time The maximum treatment time is 30 minutes If you do not input time the timer will display elapsed time during the treatment and stop at 30 minutes 1 MHz 3 MHz 6 If you have the dual f...

Страница 39: ...t or ultrasound is not being efficiently transmitted to the patient the LED in the symbol pictured to the left will blink If inadequate coupling occurs for more that 30 continuous seconds the Sonicator Plus 992 will automatically stop ultrasound output beep twice and display E 02 in the time display 16 Press the Hold key to temporarily suspend treatment All treatment parameters except stimulation ...

Страница 40: ...n felt by the patient Pressing the amplitude modulation key will constantly change the intensity of the outputs of the two channels during treatment increasing the area covered by the interference pattern Figure 8 4 Bipolar Electrode Placement Technique 4 Bipolar electrode placement techniques Bipolar electrode placement techniques should be used to provide stimulation to larger muscle groups such...

Страница 41: ...encil electrode may be used with the Premodulated Medium Frequency or Biphasic TNS waveforms Attach the pencil electrode to the black electrode cable using a pin to banana adapter Attach the red electrode cable to a dispersive pad Apply dispersive electrode in such a manner to prevent transthoracic stimulation Pressing the switch located on the pencil electrode will allow treatment currents to be ...

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Страница 43: ...cal electrical safety checks should be performed annually by qualified biomedical engineers or technicians trained to perform these procedures 2 Inspect electrode cables and associated connectors for damage 3 To assure accurate performance of the Sonicator Plus 992 calibration verification of ultrasonic output should be performed on an annual basis 4 Inspect treatment head for cracks since they ma...

Страница 44: ... and try to begin another ultrasound treatment If the error code persists the Sonicator Plus 992 requires servicing Replace main board 7 E60 _ displayed in Time window There is an output voltage error for electrical stimulation If powering unit OFF and restarting does not remove error the unit requires servicing Replace electrode cables Replace main board 8 E70_ displayed in Time window If E7 occu...

Страница 45: ...ror the unit requires servicing Replace electrode cables Replace main board 11 F1 _ displayed in Time window There has been a communication error between the microprocessors If powering unit OFF and restarting does not remove error unit requires servicing Replace main board 12 F2 _ displayed in Time window There has been a self test fail error If powering unit OFF and restarting with all the elect...

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Страница 47: ...riac BNC T connector 2 1 K Load Resistors 20 W Before Testing Units Review Safety Instructions in User Manual Review Operating Instructions in User Manual Review Keyboard Symbol Definitions in User Manual 10 2 Preliminary Tests 1 Visual Check Check unit for proper construction Open unit case Check primary wiring and fuses Verify that fuses are 4 amp slo blo type T 2 Power Supply Test Disconnect th...

Страница 48: ...agnostic tests the function of all the seven segment dot matrix and discrete LED s Press the 4 key and then the Go key to start the Display Diagnostic The 10 seven segment LED s will count continually from 0 9 A F Verify that all the 7 segment LED s are the same color and intensity and are lined up evenly An X will be scrolling left to right on the graphic display Verify that all the dots light an...

Страница 49: ...he front panel The DAC value will be shown in the Channel 1 output window When adjusted press the Go key to save the DAC value Record the DAC value Press the Stop All key to exit the VCO Diagnostic 6 Generate Variable Supply Lookup Table Diagnostic 8 The 0 38 volt variable supply is controlled with an 8 bit DAC value sent from the HC11F1 U4 This diagnostic generates the DAC value lookup table that...

Страница 50: ...ble range Record the results 10 cm x 1 MHz Watts Indicated Watts Measured 5 0 4 25 5 75 10 0 8 5 11 5 20 0 17 0 23 0 22 0 18 7 25 3 5 cm x 1 MHz Watts Indicated Watts Measured 2 0 1 70 2 30 5 0 4 25 5 75 10 0 8 5 11 5 11 0 9 35 12 65 5 cm x 3 MHz Watts Indicated Watts Measured 2 0 1 7 2 3 5 0 4 25 5 75 10 0 8 5 11 5 11 0 9 35 12 65 1 cm x 3 MHz Watts Indicated Watts Measured 0 5 42 58 1 0 85 1 15 ...

Страница 51: ...10x1 applicator is connected to the unit and in water Press the Go key Increase power to 5 W On the Main Bd jumper a 10 K resistor across R32 The unit should beep twice stop the treatment and display E005 10 6 Stimulation Treatment Mode Output Tests 1 Interferential Output Tests Start an Interferential treatment on Channels 1 and 2 1 15 Hz sweep Install a 1 Kohm load on each output in series with ...

Страница 52: ... NOTE Use the Premodulated Sync Test Fixture Dwg 19111 as required to obtain the sweep frequency measurements Attach Vin connections across output load Attach Fout connections to frequency counter Put the unit in Premodulated mode 1 15 Hz sweep Start the treatment Adjust the outputs to 20 ma Verify that the modulation is sweeping from 1 to 15 Hz Verify the sweep time s b 14 1 sec Stop the treatmen...

Страница 53: ...t in Biphasic TNS mode 150 usec 120 Hz Start the treatment Adjust the outputs to 20 ma Verify outputs are biphasic square waves Record the positive pulse width s b 150 15 us Record the pulse frequencies are 120 1 Hz Stop the treatment Restart the treatment Record the positive and negative pulse voltages at 0ma displayed s b 0 1 volts Adjust the displayed current to 10 ma Record the positive and ne...

Страница 54: ...ual voltage s b 500 100 Vpk Stop the treatment 6 Micro Current Output Tests Put the unit in Micro Current mode 500 Hz bipolar polarity With no load connected press the Go key verify that the unit beeps twice and E706 is displayed Connect a 1 K load press the Go key and adjust output for 200 uv Verify a square wave signal with 500 Hz 50 Hz Adjust the displayed current to 50 ua Record the measured v...

Страница 55: ...amp is 3 sec and down ramp is 2 sec Verify that the Channel 1 is on first for 5 sec and then Channel 2 is on for 5 sec and then both channels are off together for 5 sec Stop the Treatment 10 8 Stimulation Error Tests 1 Error 6 Over Voltage Error Install 1 Kohm loads in all channels Put the unit in Interferential mode 1 15 Hz Start the treatment Adjust Channel 1 for 20 ma Short TP10 to TP1 The unit...

Страница 56: ...tach the Combination Patient Cable to Channel 1 Connect a 1 K load resistor between the electrode cable and the water that the applicator is in Connect a scope probe across the load Start the treatment Increase the stimulation output to 20 ma and the ultrasound output to 10 watts Verify the proper stimulation waveform Verify the proper ultrasound power Disconnect the load at one end Verify that th...

Страница 57: ...he power cord to the safety ground pin on the power cord Test at 1500 VAC for 1 second with no breakdown A a1 Test the Dielectric Withstand from the blades on the power cord to each stimulation output connector Test at 4000 VAC for 1 second with no breakdown B a Test the Dielectric Withstand from the blades on the power cord to the ultrasound connection Test at 4000 VAC for 1 second with no breakd...

Страница 58: ... Corp 58 10 15Final Operational Check Connect unit to nominal power Connect 10x1 applicator Start US treatment Verify output accuracy at 20 W Start Interferential treatment on Channels 1 2 Verify output accuracy at 30 ma ...

Страница 59: ... ribbon cable from the power supply connector The two unit halves may now be physically disconnected 11 3 Chassis Bottom Components Servicing The components that may now be replaced are the cooling fan power supply fuses or power switch assembly Cooling Fan Replacement Unplug the fan power cable from the power supply Loosen and remove the four bolts holding the fan to the chassis Install the new f...

Страница 60: ...4 hex Allen key Remove the two shaft hex nuts and washers With a sharp pointed object pry up the upper right corner of the membrane switch and slowly peel it away from the chassis Install the replacement membrane switch by peeling the adhesive cover away While holding it by the edges thread the ribbon cable through the slot on the top and slowly line up the edge with the recessed area of the chass...

Страница 61: ...tput connector first identify the connector to be replaced looking into the chassis while it is lying open Unplug that connector from the main board Using a pair of long nosed channel lock pliers grip the connector retaining ring and loosen it until it can be removed by using fingers Thread the wire of the replacement connector through the front panel hole and slip the retaining nut ring over it i...

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Страница 63: ...Power HH2 15 Filter Power Inlet QR1 74 Cable Assembly Power Supply QT2 11 Cable Assembly Output Jack 4 QT2 10 Cable Assembly Output Jack Shielded QR1 75 Cable Assembly Isolated Coax QR1 76 Cable Assembly Power Inlet QR4 01 Cable Assembly Power In Ground QT2 14 Wire Assembly Filter Hot Wire QT2 13 Wire Assembly Filter Neutral Wire JB1 24 Screw 6 32 x JB1 25 Screw 6 32 x 3 8 JB2 27 Screw Flat Head 6...

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Страница 65: ...couplant and massage lotion 1 X 5 liters 1859 Sonigel Lotion with Aloe Vera ultrasound couplant and massage lotion 4 X 5 liters 2000 4 Sponge electrodes 2 x 2 2001 24 Sponge inserts 2 x 2 2002 4 Sponge electrodes 4 x 4 2003 24 Sponge inserts 4 x 4 2004 1 Sponge electrode 3 5 x 7 2005 12 Sponge inserts 3 5 x 7 2006 1 Sponge electrode 8 x 10 2007 12 Sponge inserts 8 x 10 2008 4 Electrode straps 24 2...

Страница 66: ...ectrodes with lead wires case of 10 packages four electrodes pkg 7293 Detachable U L listed hospital grade line cord 7296 Detachable line cord CE units 7305 Sonicator 715 730 992 and 994 applicator 5 cm 1 MHz 7310 Sonicator 716 730 992 and 994 applicator 10 cm 1 MHz 7331 Sonicator 730 992 and 994 pencil style applicator 1 cm 3 3 MHz 7335 Sonicator 730 992 and 994 applicator 5 cm 3 3 MHz 7392 Hoode...

Страница 67: ...water for 30 minutes and transferring it to plastic bottles while still hot then placing the bottles in a refrigerator If interested in this method send a request to the Mettler QA Department Also when measuring ultrasound output insure accurate placement of the applicator face over the center of the power meter target If off center the target will be moved around by ultrasound resulting in unstab...

Страница 68: ...ents include transducer ring assembly and handle assembly 3 Replacement crystal ring and applicator handle assemblies may be installed by Mettler authorized repair facilities only Unauthorized repairs void warranty provisions 4 Applicators may be returned to the factory Service Department for repair if desired Applicator Handle Assembly Crystal Ring Assembly O Ring Figure B 1 Applicator Top Assemb...

Страница 69: ... 23 4 4 24 5 5 Interferential 25 6 6 Premodulated 26 7 7 Medium Freq 27 8 8 Biphasic TNS 28 9 9 High Volt 29 0 10 Micro Current 30 Go 11 Sweep 31 Hold 12 Rotate 32 Stop exits Bip uS 33 Stim 14 Bip Hz 34 Ultrasound 15 HV Polarity 35 Combination 16 HV Hz 36 Timer 1 17 uC Polarity 37 Timer 2 18 uC Hz 38 N A 19 Continuous 39 N A 20 Reciprocate 40 ...

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