- Frank`s Hospital Workshop
Contents
1. then there is a permanent fault in the RAM replace the CPU board Page 1 of 1 Rev Nr 00 0 FAULT_29 for 23VS and 29VS doc Fault diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 32 Power loss Sterilize sterile filter FAULT 32 Power loss Sterilize sterile filter Triggered by After the start of a program there is a loss of the power supply The fault is reported as soon as the electric power supply is resumed If there has been a power loss then on restarting there will be a reminder on the display to sterilize the sterile filter since this may have been damp and be contaminated with pathogens Remove sterile filter on the rear side of the autoclave Sterilize the filter in the quick program After completion of the program replace the sterilized filter Causes Remedy Operating fault Check by personnel e Manual program termination by switching off the autoclave from the mains supply e Check for mains power cut and intact electrical supply installations Appliance fault Repair by technical service personnel Power switch faulty Main fuses F1 F2 on front of autoclave beneath power switch is faulty Check internal wiring of the autoclave in particular power supply to the CPU board Power supply on the CPU board is faulty Page 1 of 1 Rev Nr 00 0 FAULT_32 for 23VS and 29VS doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Euroklav 23 S 23V S 29 S 29V S Fault 38 Sterilization2. AIN2 now in AIN 1 is faulty exchange the relevant sensor If there is still a deviation of temperature and pressure values in the print out from the values for saturated steam then it can be assumed that sensor originally at AIN 2 now in Analog Input AIN 1 did not give an incorrect temperature measurement so that the fault lies in the incorrect signal processing at AIN 2 Exchange CPU board AIN1 B Z N Page 1 of 1 Rev Nr 00 0 FAULT_27 for 23VS and 29VS doc Fault diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 29 Battery RAM FAULT 29 Battery RAM Triggered by In the data memory of the CPU there is a data inconsistency or a loss of data This can be due to an electrical disturbance e g very high power supply disturbances a low battery voltage or a hardware defect in the RAM On quitting the fault the clock time is automatically set at 00 00 and the load counter is reset to the value from the EEPROM At the same time all record data in the memory is deleted Causes Remedy Operating fault Checks by personnel e After quitting the malfunction report Enter correct time and date settings and restart a program Appliance fault Repair by technical service personnel gt Battery voltage too low e f fault occurs regularly exchange battery on CPU board battery connections soldered gt Fault in RAM e f after exchanging the battery there is still a malfunction report
3. At output ACOUT2 there is a permanent voltage although LED off i e semiconductor relay faulty exchange CPU board gt Temperature sensor Pre heating faulty Temp sensor Preheating measurements too high fluctuating in the MELAG Diagnosis Program check the analog input AIN4 during a program by pressing the button Exchange temperature sensor Temp sensor Preheating AIN4 Under the chamber insulation stuck directly on the heating gt Signal processing at analog input AIN4 faulty Exchange CPU board Until a repair it is possible to temporarily deactivate the preheating and the malfunction message by setting the FLAG F5 0 and in addition if the output ACOUT2 is defective disconnect the contacts to the pre heating from the output Page 1 of 1 Rev Nr 00 0 FAULT_22 for 23VS and 29VS doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Euroklav 23 S 23V S 29 S 29V S Fault 27 temp Sens def 1 2 FAULT 27 Temp Sens def 1 2 Triggered by The maximum permissible deviation D3 value x 0 1 in C between the two temperature sensors Temp_chambr_elec on AIN1 and Temp_chamber_Dis1 2 on AIN2 was exceeded Causes Remedy Operating fault Check by the personnel Appliance fault Repair by technical service personnel gt Temperature sensor AIN 1 or AIN 2 Signal processing on AIN1 or AIN2 faulty Clarification with the help of the print out record If at the time of the malfunction the temperature and press
4. Class A Temperature sensor for control of chamber temperature 6 AIN6 Water Conductivity display conductivity monitoring elec sensor conductivity Temperature sensor preheating AIN4 Temperature sensors Steam AIN1 AIN2 Seite 1 von 2 Rev No 00 0 FAULT_18 for 23VS and 29VS doc Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Euroklav 23 S 23V S 29 S 29V S MELAG Fault 18 Sensor nr Input nr Display message Triggered by Cause Correction Comments Remarks Fault18 Temperature at analog input e Exchange Until the sensor CPU board can be Sensor 1 Input 1 AIN1 lt 0 C or gt T23 temperature exchanged in the MELAG e Temperature sensor faulty sensor Service program set FLAG F28 to Short circuit Open e Exchange CPU 1 AIN 2 then takes over the e Signal processing on CPU board Aihction of board faulty Fault18 Temperature measured at e Exchange Until the exchange of the Sensor 2 Input 2 analog input temperature sensor CPU board unplug the AIN2 lt 0 C or gt T23 sensor defective sensor on input AIN2 e Temperature sensor faulty e Short circuit Open e Signal processing on CPU board faulty Exchange CPU board move the sensor on AIN1 to AIN2 and in the MELAG Service Program set F28 to 1 Fault18 Sensor 3 Input 3 Pressure measured to analog e input AIN3 lt 0 mbar or gt P19 e Pressure sensor faulty e Signal processing to CPU board faulty e 24V vol
5. Euroklav 23V S Euroklav 29V S Program cycle Diagnosis program Vacuklav 24 B 30 6 31 B Euroklav 23 S 23V S 29 S 29V S Press both buttons 6 Buttons Continue in the Menu in the diagnosis program hold and P Button choose program Enter Quit Input in the diagnosis program Button Start Stop Escape Leave Interrupt in the diagnosis program Diagnosis Diagnosis Diagnosis Diagnosis Diagnosis Diagnosis Diagnosis Total 5650 Analog Inputs Digital Inputs Digital Outputs Keyboard Self Test Leakage search Statistics P succesfull xxxx Diagnosis Service dd mm yy Temp_Chambr_elec 11 Door contact O1 Steam generator Keyboard Self Test Maintenance data run cycles xx XX x C closed x x bar xx C off on Nr 0 Signal Self Test Maintenance data Memory Test OK O S Update i Temp_Chambr_Dis Temp_Chambr_Dis 13 Cooling water 03 Vacuum pump closed x x bar xx C off on 14 Aqua dem current 04 Reserve open off MELAG GmbH 12 OH protector SG O2 Pre heating Keyboard Geratename xxx Self Test Battery OK closed x x bar xx C off Nr 10 Keyboard Nr 20 Printer is 5 Keyboard not ready Service dd mm yy Nr 40 run cycles 0 Leak Test Temp_Preht_Cham 15 Door locking dev 5 Pump SV aqua dem S Keyboard as hare S Xx X C open x x bar xx C off Nr 80 O Malfunction mem Malfunction mem print 16 Aqua dem swimmer 06 S
6. FAULT_09 for 23VS and 29VS doc MELAG Fault Diagnosis Vacuklav 24 B 30 B 31 B Euroklav 23 S 23V S 29 S 29V S Fault 12 Door locking FAULT 12 Door locking Triggered by e The door locking contact DIN5 is not switched after time period 231 Door closed when no power supply contact DIN5 still open Causes Remedy Operating fault Check by operating personnel e Locking bolt sticking or out of alignment Appliance fault repair by technical service personnel e Control for door locking output ACOUT 10 on CPU board is faulty permanent voltage e Contact switch on door lock is faulty e Locking bolt cannot move freely is blocked Adjusting the door lock Dismantle door cladding close door e Loosen fixing screws on the door lock e By shifting the door lock centralise the face of the locking bolt in the depression as shown with a spacing of approx 2 mm e Tighten fixing screws on the door lock Door lock will not disengage The Display permanently shows Please wait Door unlocking after switching power on or after a program has ended no explicit malfunction reported e Control Door locking Output ACOUT 10 on CPU board is faulty e Drive for the door locking is faulty e Door contact switch of the door lock is faulty e Locking bolt cannot move freely is blocked gt In the MELAG Diagnosis Program switch on output ACOUT10 functional control power output and locking Unlock door manually for ex
7. G Service Frequencies MELAG Service Hysteresis MELAG Service Conductivities MELAG Service 53 U 5 R 3 D n MELAG Service System flags System flags MEN Fn xx flashs MELAG Service Sensor numbers MELAG Service Pol digit inputs Pol digit inputs IMn xx flashs MELAG Service Pol digit outputs MELAG Service Production year MELAG Service Production no Program cycle basic position File DS98_SPAP_0E DOC Rev 0 01 00 Seite 1 von 1
8. TD FAULT 38 Sterilisation TD Triggered by The maximum permissible difference D6 between the temperature value to generate saturated steam calculated on the basis of the measured pressure and the value measured by the temperature sensor Temp_chambr_elec at AIN1 during the period T1 T5 was exceeded Cause Remedy Operating fault Checks by personnel Overheating in particular in the case of textile loads soiled with chemicals Appliance fault Repair by technical service gt No saturated steam pressure Leaking As a result of too much residual air in the autoclave chamber the temperature is not high enough to allow the generation of saturated steam Check using the print out records Control pressure in record corresponds to control pressures P 6 P10 Reading in record from temperature sensor Temp_Chambr_Dis1 2 at Analog input AIN2 is also too low corresponds to the temperature of temperature sensor Temp_chambr_elec at analog input AIN1 see last line of record print out Carry out a vacuum test gt Temperature sensor Temp_Chambr_elec Analog input AIN1 fehlerhaft Check using the record print out Print out reading for control pressure corresponds to control pressures P 6 P10 Print out reading for temperature sensor Temp _Chambr_Dis1 2 at analog input corresponds with the pressure required for saturated steam In order to determine whether the fault lies in the temperature sensor or the signal processin
9. V Vacuum P S open x x bar xx C off on 0 x bar 8 Diagnosis Memory init OL Neutral position O8 SV Ventilati Di i Backup P t OG OG _ o a e O Pae Pressure _Chamber xxxx mbar M Reserve defective itt i Conductivity I7 Reserve O7 SV Press rel 1 Xxx US cm open x x bar xx C off Symbol Meaning example i O9 SV Cool water Doxxklav XX X_ Name Vacuklav 30 B x x bar xx C off on typ Type V30 i Diagnosis P Delete Backup Main und Undermenues can be changed P l progvers Programversion 376 Delete Backup Sure forward and with backwards O10 Door lock spr Language D i S scrolling and always leaving the loop x x bar xx C off on parvers Parameterversion 01 13 s hh mm ss X Xx bar xx C Neutral position Diagnosis 2000005646 Lez One i V30 3 16 D01 13 SSS gt File Diagnosis Program doc Rev 0 00 104 Seite 1 von 1 Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 4 Pressure release FAULT 4 Pressure release Triggered by The monitoring time limit Uet5 for the pressure release until reaching P11 has been exceeded Causes Remedy Operating fault Check by personnel e Check that the cooling water outlet pipe is free of kinks and has a steady downward gradient e Check that the water outflow plumbi
10. am duration and the internal timer has been exceeded Causes Remedy Operating fault Check by personnel Appliance fault Repair by technical service personnel gt Internal hardware fault e if fault occurs repeatedly exchange CPU board Page 1 of 1 Rev Nr 00 0 FAULT_08 for 23VS and 29VS doc Fault Diagnosis Vacuklav 24 B 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 9 Door open FAULT 9 DOOR OPEN Triggered by Door contact digital input DIN1 was closed during a program Causes Remedy Operating fault Checks by personnel e Press down door handle as far as possible Appliance fault Repair by technical service personnel gt Door switch faulty e Door switch faulty needs readjustment e Electrical connection to CPU board interrupted e Digital input DIN1 on CPU board faulty Check in the MELAG Diagnosis Program Digital Inputs E 1 it the door switch needs adjusting see below Adjusting the door contact switch e In the diagnosis program Digital Inputs select Input E1 Door contact e Insert 8 mm spacer M8 bolt or similar between lock housing and upper door beam as shown e Close door and push down door lock until contact is made e Loosen right fixing screw of door contact switch e Turn door contact switch around the left fixing screw until door contact switch engages Display shows closed switching sound e Tighten right adjusting screw in new position Page 1 of 1 Rev No 00 0
11. ample with the help of a screwdriver Page 1 of 1 Rev Nr 00 0 FAULT_12 for 23VS and 29VS doc Fault diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 18 Sensor nr Input nr FAULT18 Sensor nr Input nr Triggered by e The internal check of the sensors for temperature pressure or conductivity showed too large deviations Such malfunction reports can occur immediately when the appliance is switched on or while a program is running Causes Remedy Operating fault Checks by personnel For Fault 18 Sensor 6 Input 6 conductivity sensor is faulty check first that if demineralized or distilled water is supplied from a container that this has not accidentally been filled with something else Appliance fault Repair by technical service personnel Overview of sensors analog inputs Sensor Input Sensor Sensor designation No No characteristic function es 9081222922 1 AIN1 PT 1000 Temp_chambr_elec GIES Class A Temperature sensor Steam for program A Pl ee a control e ee om 2 AIN2 PT 1000 Temp_Chambr_Dis1 2 pa Signal 41 Class A Temperature sensor Steam for display record and monitoring 3 AIN3 Pressure Pressure chamber t k sensor Pressure sensor for UAE 62 59 271111 0 10V at program control Display ee 0 4000mbar record and monitoring Sa ere reg tg 4 AIN4 PT 1000 Temp_preht_chamb
12. d Causes Remedy Operating fault Checks by personnel e Mains electricity voltage too low Check mains supply installations e Appliance is cold door not closed properly during preheating Appliance fault Repair by technical service personnel gt Control unit Preheating Output ACOUT2 is faulty Check in MELAG Diagnosis Program Switch on output ACOUT 2 the LED for this output lights up Measure voltage at output ACOUT2 gt Overheating protection Preheating faulty e Control unit permanently open e Control unit switches too soon and stops heating power gt Measure voltage behind the control unit during the program gt Preheating faulty In the MELAG diagnosis program switch on output ACOUT2 measure voltage directly at the connection to the preheating voltage but heating remains cold or check current through heating Until a repair is possible as a temporary measure set the FLAGS F5 0 to deactivate the preheating and the associated malfunction report Page 1 of 1 Rev Nr 00 0 FAULT_21 for 23VS and 29VS doc Fehlerdiagnose Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fehler 22 Overheating preheating FAULT 22 Overheating of preheating Triggered by The limit value for the preheating temperature T10 was exceeded Causes Remedy Operating faults Checks by personnel Appliance fault Repair by technical service personnel gt Control of Pre heating Output ACOUT2 faulty
13. g on the CPU board proceed as follows Change temperature sensors on AIN1 and AIN2 and start the program again Fault 38 again Temperature reading on print out corresponds with the pressure to produce saturated steam Exchange temperature sensor Signal processing on CPU board now on AIN2 was on AIN 1 faulty gt Exchange CPU board gt Pressure sensor Analog input AIN 3 measures incorrectly If the checks show there is no leak Vacuum test check through the following on the program print out Pressure reading on print out corresponds to the control pressures P 6 P10 Print out readings from temperature sensor Temp _Chambr_elec AIN1 and from temperature sensor Temp_Chambr_Dis1 2 AIN2 correspond to one another but both are too low or too high to produce saturated stream e Exchange pressure sensor If there is still a fault exchange the CPU board Seite 1 von 1 Rev Nr 00 0 FAULT_38 for 23VS and 29VS doc Program cycle Service program Vacuklav 24 B 30 B 31 B Euroklav 23V S 29V S 23 S 29 S selection buttons 3 button Program Press all three buttons and hold 8 button Start Stop and switch on power MELAG Service Pressures MELAG Service Temperatures MELAG Service Temp Diff MELAG Service i process times process times tn xx flashs MELAG Service times 50 ms MELAG Service Switch times MELAG Service Monit times MELA
14. ng in the room is not blocked Appliance fault Repair by technical service personnel gt Pressure release solenoid valve does not open e Electrical control system is faulty in the Diagnosis Program switch on output ACOUT 7 the LED for this output lights up Measure voltage at ACOUT 7 of control approx 230V AC Measure voltage at output of the rectifier socket approx 200V DC Check coil of solenoid valve is conducting e Solenoid valve mechanically blocked clogging Open valve casing gt Pressure release filter clogged gt Remove stopper Check filter sieve for clogging clean exchange insert new seal and screw tight gt Pressure sensor Analog input AIN 3 measures too high Even after pressure release pressure signal still shows gt P11 Follow on faults would usually be Fault 1 Vacuum system Fault 34 Sterilization TU Check the pressure displayed in Diagnosis Program Analog inputs for plausibility displayed value must correspond to current atmospheric pressure door open gt See also under Fault 34 Sterilization TU Pressure sensor Analog input AIN 3 measures too high Exchange pressure sensor If fault occurs again exchange CPU board Seite 1 von 1 Rev Nr 00 0 FAULT_04 for 23VS and 29VS doc Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 8 Time base FAULT 8 TIME BASE Triggered by Maximum difference between the progr
15. tage to pressure sensor at CPU board faulty Exchange pressure sensor Exchange CPU board Sequence of testing 24V supply between GND and UB measured at pressure Seqsalrvoltage at pressure sensor between GND and Signal must be around 2 5V corresponds 1000mbar air pressure Fault18 Sensor 4 Input 4 Temperature measured at e analog input AIN4 lt 0 C or T23 e Temperature sensor faulty e Short circuit Open e Signal processing on CPU board faulty Exchange temperature sensor Exchange CPU board Until exchange of the sensor CPU board in the MELAG Service program set FLAG F5 to 0 this deactivates the entire preheating including malfunction reports drying quality will be reduced Fault18 Sensor 6 Input 6 Conductivity measured at e analog input AIN6 2 L3 Check for short circuits of the conductivity Exchange CPU board Until exchange of the CPU board in the MELAG Service program set FLAG F3 to 0 this deactivates the entire conductivity measurement including malfunction reports temporarily no automatic checks of water quality Page 2 of 2 Rev No 00 0 FAULT_18 for 23VS and 29VS doc Fault diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 21 Preheating FAULT 21 Preheating Triggered by The monitoring time limit Uet11 Uet16 from switching on the preheating until reaching the necessary temperature has been exceede
16. ure values of the print out correspond to values for saturated steam then it can be assumed that the temperature measurement at AIN2 is accurate The cause of the malfunction is therefore probably a faulty temperature measurement at Analog input AIN 1 Temperature sensor Temp_chambr_elec at AIN1 faulty e Fault in signal processing at AIN1 AD converter on CPU board n Exchange temperature sensors on AIN1 and AIN2 and restart the program If the temperature and pressure values on the print out at the time of the malfunction correspond to the values for saturated steam then it can be assumed that the temperature sensor from AIN 1 now in Analog input AIN2 is measuring properly so that the malfunction is due to the faulty signal processing on the AIN 1 exchange CPU board If there is a deviation from the values for saturated steam then the fault lies in the temperature sensor originally in AIN1 now in AIN2 exchange this sensor However if the print out shows a deviation from the values of pressure and temperature for saturated steam then the fault lies with the temperature measurements from the analog input AIN2 Temperature sensor Temp_chambr_elec at AIN2 faulty e Faulty signal processing at AIN2 AD converter on the CPU board Exchange temperature sensor on AIN2 with AIN1 and start the program If the temperature and pressure values now correspond to the values for saturated steam then the temperature sensor originally at
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