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GymnaUniphy
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Performa
Service manual
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GymnaUniphy Performa Service manual

SERVICE INFORMATION PERFORMA +
Page 1
1. TABLE OF CONTENTS
1. TABLE OF CONTENTS ................................................................................................ 2
2.
GENERAL INFORMATION ......................................................................................... 4
Technical specifications .................................................................................................. 6
3.
4. OPERATION .................................................................................................................. 7
5. Yearly checkup and safety test........................................................................................ 8
6. Circuit description......................................................................................................... 11
6.2 ...................................................................................................................................................11
System diagnostics software ......................................................................................... 15
7.
Introduction..........................................................................................................................4
Safety aspects.......................................................................................................................4
2.2.1 Electrical safety.............................................................................................................4
2.2.2 Explosion safety............................................................................................................4
2.2.3 Safety of use. ................................................................................................................4
2.2.4 Radio interference suppression and electromagnetic compatibility..............................4
2.2.5 Medical device directive (MDD) ..................................................................................5
Installation............................................................................................................................5
2.3.1 Incoming inspection......................................................................................................5
2.3.2 Mains voltage................................................................................................................5
2.3.3 Functional test...............................................................................................................5
2.3.4 Selecting the operating language. .................................................................................5
2.3.5 Location and transportation. .........................................................................................5
Performance: ........................................................................................................................6
General information. ............................................................................................................7
Safety inspection. .................................................................................................................8
Inspection interval................................................................................................................8
Inspection results..................................................................................................................8
5.3.2 General Functional Inspection ......................................................................................9
5.3.3 Functional Inspection Shortwave therapy.....................................................................9
5.3.4 Electrical Safety Test According to IEC 601.1.............................................................9
5.3.5 Result of safety inspection..........................................................................................10
Block diagram....................................................................................................................11
Mains power and mains transformer..................................................................................11
Power supply (A100). ........................................................................................................12
Transistor power generator. ...............................................................................................12
6.5.1 The quartz stable generator.........................................................................................12
6.5.2 The level control circuit..............................................................................................12
6.5.3 The amplification circuits. ..........................................................................................12
6.5.4 Impedance matching and filter circuits.......................................................................13
6.5.5 Power and mismatching meter....................................................................................13
6.5.6 Setpoint and actual value comparator.........................................................................14
6.5.7 Channel switch PCB. ..................................................................................................14
The service screens. ...........................................................................................................16
Measuring point 6 ..............................................................................................................17
Measuring point 7 ..............................................................................................................17
Measuring point 8 ..............................................................................................................17
Measuring point 9 ..............................................................................................................17
Measuring point 10 ............................................................................................................18
Measuring point 11 ............................................................................................................18
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Measuring point 12 ............................................................................................................18
8. Calibration of the generator. .........................................................................................19
Generator calibration procedure.........................................................................................19
8.1.1 Calibration of the start-up point of the generator........................................................19
8.1.2 Calibration of the maximum average power...............................................................19
9. Unit checkup procedure ................................................................................................21
Calibration of the coil field electrode. .......................................................................... 22
10.
10.1 General...............................................................................................................................22
10.2 Different types of coil field plods. .....................................................................................22
10.3 Performance check of the electrode. ..................................................................................23
10.4 Recalibration of the plode. .................................................................................................23
10.5 Contact control...................................................................................................................23
10.6 Opening the coil field electrode. ........................................................................................24
Generator power check. .....................................................................................................21
Check of the SWR..............................................................................................................21
11. Photo’s of the different parts......................................................................................... 25
11.1.1 .........................................................................................................................................25
Spare parts..................................................................................................................... 26
12.
13.
Circuit diagrams............................................................................................................ 27
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2. GENERAL INFORMATION
2.1 Introduction.
The PERFORMA + is an appliance for pulsed shortwave therapy. The unit has 2 output channels and there are 2 different coil-field applicators.
In this chapter the important features from the users manual for service personnel are listed. In the next chapter the theory of operation will be explained. In chapter 3 is described how service personnel can check the operation of the Performa+ and in chapter 4 the adjustments which can be executed by technicians. The next chapter contains information which could be very useful for trouble shooting such as the description of the automatic self test and a list of the error numbers. The schematic diagrams are in chapter 6, together with the reference list and the spare parts list.
2.2 Safety aspects.
2.2.1 Electrical safety.
The equipment can only be used in areas with provisions in accordance with current statutory requirements. Pay particular attention to the use of protective earth, otherwise the patient leakage current can rise above the permitted limit for type BF equipment.
2.2.2 Explosion safety.
The equipment is not suitable for use in areas where flammable gasses or vapours are present. Therefore, remove the mains plug from the socket before the area in which the equipment is located is disinfected, since some disinfecting solutions evaporate and subsequently form an explosive mixture.
2.2.3 Safety of use.
- Patients who have electrical implants (i.e. pacemaker) may only be treated following medical advice.
- The equipment is not suitable for use in damp areas.
- The equipment may not be disinfected or sterilised.
- The device is fit for continuous use.
- Only use the original accessories.
2.2.4 Radio interference suppression and electromagnetic compatibility.
This equipment meets the guidelines for ISM equipment relating to electromagnetic compatibility and is radio interference suppressed according to IEC 601.1. However, the 27.12 MHz signal might disturb …
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2.2.5 Medical device directive (MDD)
This device complies with the essential requirements of the Medical Device Directive of the European Committee (93/42/CEE ) as most recently changed.
2.3 Installation.
2.3.1 Incoming inspection.
Check that the equipment has not been damaged during transportation and that the accessories are intact and complete. In the event of damage and/or defect you should inform your supplier.
2.3.2 Mains voltage.
The appliance operates at a nominal voltage of 115 or 230 Volt AC( +/- 15%), 50-60 Hz. On the back of the appliance, you will find a label with the mains voltage. Check if the voltage is selected correctly (setting of another value than the value which should be used in your region can lead to irreversible damage of the equipment).
2.3.3 Functional test.
During production the equipment is tested for electrical safety. Whenever the equipment is switched on, the processor performs an extensive test to ensure that the equipment is operating correctly. In addition you must check whether the display and the indicator lamps are operating correctly. If this is not the case, do not use the equipment and contact Uniphy bv.
2.3.4 Selecting the operating language.
The device gives several language options. To change the language settings, press the SELECT < and > keys while switching on the unit.You can now select the desired language by turning the rotary, the equipment will use the language you have chosen.
2.3.5 Location and transportation.
The equipment must be set up horizontally and stable. You must ensure that the perforated sections on the backside of the casing are not covered up, thus hindering air circulation. For transportation only use the original packaging.
The appliance is capable, while packed for transport and storage, of being exposed to environmental conditions not outside the following ranges:
• a ambient temperature range of -20ºC to +60ºC;
• a relative humidity range of 10% to 100%, including condensation;
• an atmospheric pressure range of 500hPa to 1060 HPa.
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3. Technical specifications
Mains power indications:
Mains voltage: 110 VAC, 230 VAC (+/- 15%) 50-60 Hz Current consumption : 2.6 A (230 V) /600 VA Mains fuses : 2 x 6.3F
3.1 Performance:
Frequency : 27.12 MHz Channels : 2 Maximum peak power: 200 Watts Maximum average power: 90 Watts Maximum frequency 1 channel: 1125 Hz Maximum frequency 2 channel: 800 Hz Maximum treatment time: 60 min
Hardware information:
Dimensions: 38 x 44 x 95 (Width x Depth x Height) Weight: 43 Kg Weight of electrode-arm: 3.5 Kg Classification: Class I, type BF Electrical safety standard: IEC 601.1 Medical device directive (MDD): CE 0197
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4. OPERATION
4.1 General information.
The Phyaction performa+ is able to generate a maximum peak power of 200 Watts. However, this power cannot be reached under all circumstances.
The maximum power under all circumstances = 230/SWR, with a maximum of 200 watts.
Under ideal circumstances S = 1 (perfect contact between plode and patient).
Suppose that the set power is 200 watts and S = 1.3: the output power is now 230/1.3= 177 watts instead of 200 Watts !
The unit has a contact control circuit: when S>1.4 the unit will give the message ‘improve position of the applicator’. This means that S can never reach a value higher than 1.4. In other words, if the set power = 165 Wpeak the unit is able to deliver this power within the range between good and bad contact.
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5. Yearly checkup and safety test
5.1 Safety inspection.
To prevent the Performa+ from having hidden defects acquired during its lifecycle it is strongly recommended to have the device checked regularly for its proper functioning by qualified personnel. In some countries this is mandatory or your insurer may be requiring it. A record of these inspections should be filed so the measurements can be compared with earlier values to alert for a possible potentially dangerous tendency. For this purpose you can e.g. make copies of these pages.
5.2 Inspection interval.
The design of the device is based on a yearly inspection. If the legislation of your country or your insurer calls for a shorter period you should adhere to the latter.
5.3 Inspection results.
The inspection is passed when all items as presented on the standard document on the next page are passed. In the unlikely event the device fails the deviation should be repaired before using it. Repairs are only to be made by technicians authorised by Uniphy bv. Contact your supplier on this matter.
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Checkup and safety document
5.3.1.1 Visual inspection
The device record is present and kept up to date
The user manual and the safety manual are present
Device label and suppliers label are clearly readable
The enclosure of the appliance is undamaged
Mains entry and mains cable are undamaged
Coax cables are undamaged
Pass Fail
The control knobs, keys and display are undamaged
Only accessories listed in the user manual are being used
5.3.2 General Functional Inspection
Pass Fail
The automatic self test on power up does not report any errors
The display does not show any defective pixels or lines
All keys are functioning
The control knobs operate properly.
5.3.3 Functional Inspection Shortwave therapy
Check the different thermoplodes and adjust if necessary (chapter)
Check the power output with the dummy load (chapter)
Pass Fail
5.3.4 Electrical Safety Test According to IEC 601.1
Parameter Meas. Value Limit Comments
Protective earth resistance
Enclosure leakage current µA < 1000 µA
Patient leakage current µA < 5000 µA
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Ω < 0.2 Ω
Pass Fail
5.3.5 Result of safety inspection
The Performa+ with serial number …………….. has passed / failed
Safety Inspector
Name:
Date:
Sign:
........................................
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6. Circuit description
6.1 Block diagram.
6.2
6.3 Mains power and mains transformer.
The Performa+ has to be connected to the mains via the fixed power cord, with a non-fused earth contact. Always check whether the mains power corresponds to the mains input as indicated on the type shield (besides the mains cable). Note: the mains cable always has to be replaced with the same type !
The mains transformer (T001) generates 3 different output voltages :
- 45 VAC non-fused
- 26 VAC with fuse 100 mA L
- 160 VAC with fuse 100 mA L
The transformer has built-in automatic thermal fuse. It will cut-off the primary winding when the temperature exceeds 135°C. The transformer can be fed either with an incoming voltage of 230 VAC (+/- 15%) or with 115VAC
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(+/- 15%).
6.4 Power supply (A100).
The PCB A 100 is a switched power supply, generating 3 different output voltages:
+ 15 VDC + 5 VDC
- 15 VDC
The power supply PCB has a 2 AL fuse.
6.5 Transistor power generator.
This module can be subdivided into three main sections. The first one includes the quartz stable generator, amplification and filtration of the 27,12 MHz high-frequency power. The second includes the measurement and control circuits that enable an exact adjustment to the output power. The third section contains the control circuit of the operating voltage of the amplifier.
Any repair work of this sub-assembly shall only be performed by the manufacturer. However, there are some reference voltages that can be checked to determine the exact location of a defective part. Please refer to chapter x for more details.
6.5.1 The quartz stable generator.
The oscillator circuit is composed round C82 (Quartz), V08, L10 and V09. The base voltage of V08 must be about 3,6 VDC. By means of L10, the amplitude of the signal is tuned to a voltage of about 10 Vpp to 13 Vpp. This signal must be measured on the collector of transistor V09 (= cooling surface). If necessary, the amplitude can be changed by adjusting the coil L10 (first take out the protective cover).
6.5.2 The level control circuit.
The intensity level control circuit is composed around V10, L12 and V11. The input voltage at the basis of V10 has a range from 0 to 12 V. With a voltage below +2V the level control delivers no output power. The level control is set to full power with a voltage of about 12V to 14V.
6.5.3 The amplification circuits.
This circuit includes R252, C235,L213, V212, C238, C239, L216, V213, L219, L220, C263, C264, L221, L222, L226, C273, C274, C275.
The main amplifier is the V13: BLW 96C that is integrated as a class C amplifier.
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