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Related Manuals for Phyaction PERFORMA +
Summary of Contents for Phyaction PERFORMA +
- Page 1 SERVICE INFORMATION PERFORMA + Page 1...
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Page 2: Table Of Contents
1. TABLE OF CONTENTS TABLE OF CONTENTS ....................2 GENERAL INFORMATION ..................4 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... - Page 3 Measuring point 12 ......................18 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 Unit checkup procedure ....................21 Generator power check......................21 Check of the SWR......................21 Calibration of the coil field electrode.
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Page 4: General Information
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. -
Page 5: Medical Device Directive (Mdd)
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. -
Page 6: Technical Specifications
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 : Maximum peak power: 200 Watts Maximum average power: 90 Watts... -
Page 7: Operation
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. -
Page 8: Yearly Checkup And Safety Test
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. -
Page 9: General Functional Inspection
Checkup and safety document 5.3.1.1 Visual inspection Pass Fail 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 The control knobs, keys and display are undamaged... -
Page 10: Result Of Safety Inspection
5.3.5 Result of safety inspection The Performa+ with serial number …………….. has passed / failed Safety Inspector Name: Date: Sign: ........Page 10... -
Page 11: Circuit Description
6. Circuit description 6.1 Block diagram. 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). -
Page 12: Power Supply (A100)
(+/- 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. -
Page 13: Impedance Matching And Filter Circuits
The collector voltage of V13 will remain stable at a level of about 46 VDC. This collector voltage is automatic controlled by the operating voltage control circuit (B 4207). The thyristor V001 is triggered by the operating voltage control circuit and charges the capacitor C001 to 46 VDC. -
Page 14: Setpoint And Actual Value Comparator
6.5.6 Setpoint and actual value comparator. It includes: R221, R225, R226, C210, V214, N201/1. Under normal conditions op-amp N01A will control the voltage level. V01 will be open and V02 will be decoupled. The cable voltage monitoring circuit is composed by opamp N01A and will be active when extreme mismatching occurs and a high RF power is required at the same time. -
Page 15: System Diagnostics Software
7. System diagnostics software The unit constantly monitors a number of key-points in the unit. If any of these points exceed the limits, the unit will give the following message: ‘ CONTACT SERVICE DEPARTMENT’ Now press the two keys that light-up (Key ‘standard mode’ and Key ‘start/stop’). The unit will display the measuring point where an error has been detected. -
Page 16: The Service Screens
Important remark: not following these power settings, will damage the unit. Maximum power Maximum time 14 cm coil-field 50 watts 5 min 8 cm coil-field 50 watts 5 min Dummy load (directly to generator) 200 watts 1 min 7.1 The service screens. Measuring point 1: What is measured: +/- 15 V Where can this voltage be measured:... -
Page 17: Measuring Point 6
The fan is able to work on two different speeds, depending on the temperature that is measured on the cooling surface of the generator. In order to test the high speed mode of the fan, connect a 2.7K ohm resistor between the sensor and the cooling surface. -
Page 18: Measuring Point 10
7.6 Measuring point 10 What is measured: k x ( Us + Ud)/(Us-Ud) Use of the signal: measured power. UP measuring point: X 401.3 Service measuring point: Typical value: 1.5 V (with power 100 W cont, and S=1) 0.4V (no power output) Limit value: between 0V and 3V 7.7 Measuring point 11 What is measured: L.Electr... -
Page 19: Calibration Of The Generator
8. Calibration of the generator. If the unit recognises a problem, it will generally show the message ‘contact service department’. By pressing the start/stop key and the standard mode key, the unit will show the measuring point where an error is detected. However, besides the 12 measuring points there are some additional error messages: - Pulse pause too much output. - Page 20 Calibration procedure: 1. Connect a 14 cm thermoplode to the left output connector. 2. Open the unit and the generator cover. 3. Connect a 50 Ohm dummy load directly to the generator. 4. Switch on the unit. 5. Turn the potmeter R37 maximum clockwise (to disable the software power check). 6.
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Page 21: Unit Checkup Procedure
9. Unit checkup procedure Tools required: - Dummy Load 50/100 Ohm - λ/2 cable - Reference electrode 9.1 Generator power check. Connect the dummy load (50 Ohm) directly to the generator (always use the λ/2 cable) and connect a 14 cm head on the left output channel. Switch the unit on and select the standard mode. -
Page 22: Calibration Of The Coil Field Electrode
10. Calibration of the coil field electrode. Tools required: - Dummy Load 50/100 Ohm - λ/2 cable - Reference electrode - Calibrated water (SWR 1) 10.1 General. The schema of the plode consists out of three capacitors (figure below): C1: Fixed capacitor. C2: Tuning capacitor. -
Page 23: Performance Check Of The Electrode
10.3 Performance check of the electrode. Before any adjustment on the electrodes shall be done, it is very important to make 100% sure that the problem is the electrode and not the unit. Therefore it is strongly recommended to first check the unit with the reference electrode and the dummy load (chapter 8, check of the SWR). -
Page 24: Opening The Coil Field Electrode
In order to have a SWR of 1 during treatment, the following conditions must be fulfilled: - The treated tissue is at least as large as the surface of the electrode. - The coil field electrode must touch the patient. - The treated tissue contains enough water. -
Page 25: Photo's Of The Different Parts
11. Photo’s of the different parts. 11.1.1 Page 25... -
Page 26: Spare Parts
12. Spare parts Page 26... -
Page 27: Circuit Diagrams
13. Circuit diagrams Page 27...
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