- Frank`s Hospital Workshop
Contents
1. 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 31B 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 exceeded Causes Remedy Operating fault Checks by personnel e Mains electricity voltage too low Check mains supply installat2. e Check for defects and for soiling of the door seal and the sealing surfaces of the sterilization chamber and on the round plate around the door of the sterilization chamber Repair and clean if necessary e Check to make sure that the autoclave is properly set up it must be installed with a tilt at slope as described in the operating instructions e Check to make sure that the condensate drain at the bottom of the sterilization chamber is not stopped It can be stopped if instruments filter paper etc fall onto the bottom of the chamber e Check for the following If you are using the internal system for supply of demineralised water check to make sure that the pressure release pipe is not stopped If you are using an external waste water connection that empties into the building waste water sys tem check to make sure that this drain pipe does not have a kink make sure the water can flow freely out Seite 2 von 5 Rev Nr 98 0 FAULT_01 for 31B doc MELAG Fehlerdiagnose Vacuklav 31 B Fehler 1 Vakuumanlage Faults in the autoclave Correction of faults by technical service personnel Fault 1 Vacuum system Start th test Note mportant All vacuum tests must be conducted with a cold dry autoclave Watch the evacuation pressure achieved here and the pressure change over time from the display running gt Fault Class Control fault faulty pump Please check the following for faults power output ACOU
3. The control pressure reading on the print The control pressure reading on the print out out at the time of the fault corresponds to at the time of the fault is markedly higher than the rated values P6 P10 the rated values P6 P10 Signal to the steam generator Output ACOUT1 is faulty does not switch off e Check heat transfer semi gt conductor relay ACOUT1 to cooling body e Exchange CPU board The temperature of temperature sensor The temperature of temperature sensor Temp_Chambr_Dis1 2 Analog input Temp_Chambr_Dis1 2 analog input AIN2 AIN2 corresponds to that of corresponds to the theoretical saturated temperature sensor steam pressure i e only the temperature Temp_chambr_elec analog input from the temperature sensor AIN1 but both temperatures are well Temp_chambr_elec analog input AIN1 above the theoretical value needed for lies above the theoretical value needed for saturated steam saturated steam Pressure sensor signal faulty too low e Pressure sensor faulty Temperature signal from analog input AIN 1 e Signal processing on CPU board faulty faulty Switch temperature sensors AIN1 and AIN2 Exchange pressure sensor CPU and restart program board e Program runs without Fault 35 again disturbances Does temperature on print out possibly Fault 27 correspond with pressure to Temperature on print out too generate saturated steam high for saturated steam Exchange temperature sensor Signa
4. 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 S 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 xxxxKlav XX X oono Lez One i V30 3 16 D01 13 SSS gt File Diagnosis Program doc Rev 0 00 104 Seite 1 von 1 MELAG Fault diagnosis for Vacuklav 31 B Fault 1 Vacuum system CONFIGURATION OFCOMPONENT GROUPS IN THE AUTOCLAVE ERROR 1 VACUUM UNIT The actual piping plan is contained in Drawing No 31B 010 This overview shows a rough schematic of the spatial configuration of the compo nent groups pipes and hoses in the Vacuklav 31 B The following error descrip tions will refer to this overview to help you find the component groups to b
5. 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 then there is a permanent fault in the RAM replace the CPU board Page 1 of 1 Rev Nr 00 0 FAULT_29 for 31B doc MELAG Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 34 Sterilization TU FAULT 34 Sterilization TU Triggered by Temperature fell below the minimum level for the sterilization disinfection during the period T1 T5 measured at the temperature sensor Temp_chambr_elec at AIN1 Cause Remedy Operating fault Checks by personnel e Load exceeds maximum level allowed 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 press
6. 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 _Chamber_Dis1 2 AIN2 correspond to one another but both are too low to produce saturated stream e Exchange pressure sensor e lf there is still a fault exchange the CPU board gt Overheating protection Steam generator engages e Capillary tube level control digital input DIN 2 is faulty Control does not open on overheating shortage of water water shortage is therefore not recognised and the capillary tube overheating control switches off see also Fault 2 Steam generator Observe level regulation in the condensation return pipe exchange steam generator e Capillary tube overheating control is faulty Control switches too soon exchange steam generator Observe level regulation in the condensation return pipe exchange steam generator gt Poor control response of steam generator Poor heat transmission from the heating coil of the steam generator particularly temperature fluctuations on transition from warming up phase to sterilization phase can take the temperature below the sterilization temperature for brief periods gt Exchange steam generator Page 2 of 3 Rev Nr 00 0 FAULT_34 for 31B doc MELAG Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 34 Sterilization TU Fault diagnosis using the program print out The con
7. 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 31B doc Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B MELAG Euroklav 23 S 23V S 29 S 29V S Fault 26 A D Converting FAULT 26 A D converter Triggered by The maximum permissible deviation for the signal processing in the CPU A D conversion was exceeded Causes Remedy Operating faulty Checks by operating personnel Appliance fault Repair by technical service personnel gt Hardware signal processing fault m Exchange CPU board Page 1 of 1 Rev Nr 00 0 FAULT_26 for 31B 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
8. T3 fuse F1 possibly defective vacuum pump Correct the fault and then go Ye to next Vacuum test OK No Leak rate lt 1 3 mbar min Yes Vacuum test OK Leak rate is too great Fault 31 System leaks Leak rate OK gt 1 3 mbar and permanent Pressure rise over P3 Pressure is stable pressure rise very large leaks Special vacuum test OK gt Fault Class Leak fault gt Fault Class Leak fault System flag F11 1 Repair the leak in the intake Stop the leaks and then next Pressure stable line then next The sub atmospheric pressure achieved is very weak or the pressure is gt Fault Class Vacuum fault the same as in the room Pump system too weak Correct fault and go on with normal program start In the Service Program raise the evacuation pressure P17 for the vacuum test by approx 20 mbar more than the evacuation pressure reached during the first test Then repeat the test Important When changing P17 make sure that P13 is always greater than P17 If necessary also raise 13 to ensure that P13 gt P17 If this is not done you will receive the error message System leak Seite 3 von 5 Rev Nr 98 0 Fault 1 Vacuum system Sub atmospheric pres sure is within the range of moderate to just less than the evacuation pressure P17 FAULT_01 for 31B doc MELAG Fault diagnosis for Vacuklav 31 B Fault 1 Vacuum system Fault 1 Vacuum system gt Fault class Fault in control system or fu
9. V 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 example with the help of a screwdriver Page 1 of 1 Rev Nr 00 0 FAULT_12 for 31B doc Fault d
10. Vacuklav 23 B Vacuklav 31 B 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 P 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 SV Vacuum
11. e checked VACUKLAV 31 B Configuration of the component FRONT groups in the autoclave TOP VIEW Bezeichnung Description State of valve ACOUT when no cur rent is applied 1 Dampferzeuger___ steamgenerator 1 14 K Kesa ess Pa Pumpe aqua dest pump fordistlledwater 5 PV Wakuumpumpe T3 S 1W Sensor Leitwer sensor for conductviy Sat _ Str mungswachter fow sensor for dist water LV Venti Magnet valve solenoid M VB Betung ventilation oen 8 VDA Druckablat 2 pressure release2 closed 9 Wakuumt feom 6 CVV Vakuuma vacum 6 Seite 1 von 5 Rev Nr 98 0 FAULT_01 for 31B doc MELAG Fault diagnosis for Vacuklav 31 B Fault 1 Vacuum system Tripping conditions Fault conditions may occur if the monitoring time Uet1 was exceeded for achievement of the following e The required evacuation pressures for the individual sub atmospheric pulses P37 P38 P40 P41 for cold starts P1 P2 P21 P22 for hot starts e The required evacuation pressure P17 for the vacuum test e The required evacuation pressure P12 for evacuation pressure relief e The required minimum pressure for drying P3 Causes of the problem Correction of the problem Action checking by operating staff
12. ed 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 31B 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 MELAG 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
13. ge sensor now on AIN2 was previously on AIN 1 Program runs without e Fault 34 again disturbances Does temperature on print possibly Fault 27 out correspond with Temperature on print out too low pressure to generate for saturated steam saturated steam Signal processing on CPU board faulty Exchange CPU board temperature Rev Nr 00 0 FAULT_34 for 31B doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 35 Sterilization TO FAULT 35 Sterilization TO Triggered by The maximum temperature T1 T5 D5 for the sterilization disinfection during the period T1 T5 measured by the temperature sensor Temp_chambr_elec at AIN1 has been exceeded Cause Remedy Operating fault Checks by personnel Appliance fault Repair by technical service gt Temperature sensor Temp_Kess_Prog Analog input AIN1 measures too high 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 processing on the CPU board proceed as follows Switch temperature sensors AIN1 and AIN2 and start the program again Qo e Fault 35 again Does temperature reading on print out correspond with the pressure to produce saturated steam Exc
14. hange temperature sensor now Signal processing on CPU on AIN2 previously on AIN 1 board faulty Exchange CPU board gt Pressure sensor Analog input AIN 3 measures too low Check using the program print out records 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 high to produce saturated stream e Exchange pressure sensor If there is still a fault exchange the CPU board gt Control for steam generator output ACOUT1 faulty Check using the program print out records test voltage at output ACOUT1 In comparison with the control pressures P 6 P10 pressure reading on print out are too high 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 high to produce saturated stream Voltage at ACOUT1 does not switch off during the control process e Check heat transition semi conductor relay ACOUT1 to cooling body e Exchange the CPU board Page 1 of 2 Rev Nr 00 0 FAULT_35 for 31B doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 35 Sterilization TO Fault diagnosis using the program print out FAULT 35 Sterilization TO
15. hes too soon During a program measure the voltage behind the control unit with a sufficient water level in the steam generator check level in the condensate return the control unit must not switch gt 3 Overheating protection for the Steam Generator fuse blown on the heating coil of the steam generator contact broken gt Measure voltage behind fuse this will usually be due to a fault at the output ACOUT1 of the control unit and additionally failure of the 27 overheating protection gt Heating Steam Generator faulty In the Diagnosis Program switch on output ACOUT1 measure voltage directly at the connectors of the heating coil of the steam generator voltage measured but coil remains cold gt Capillary level control unit faulty Wa e Control unit does not open on overheating water shortage Water shortage is not recognised and the overheating protection switch switches off gt Functional test of the capillary level control unit In the Service Program switch times set 224 0 Start Universal Program with full load by switching capillary control unit and the resultant feed of distilled demineralized feed water should compensate for the water shortage in the steam generator observe condensation return to steam generator gt Pressure sensor Signal Signal processing faulty e Pressure sensor signal or the signal processing too low Steam generator heats until security valve opens Page 1 of 1 Rev N
16. iagnosis 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 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 Class A Temperature sensor for control of chamber temperature 6 AIN6 Water Conductivity display cond
17. ions 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 31B 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 At output ACOUT2 there is a permanent voltage although LED off i e semiconductor relay faulty exchange CPU board gt Temperature
18. is1 2 AIN2 correspond to one another Exchange pressure sensor e If there are further malfunction reports exchange CPU board gt Poor regulatory behaviour of steam generator Poor heat transition from the heating coil of the steam generator particularly in the transition from the heating up phase to the sterilization phase it is possible that the temperature will exceed the theoretical sterilization temperature for short periods Lower P6 P10 and increase D5 Exchange steam generator Page 1 of 1 Rev Nr 00 0 FAULT_37 for 31B doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Euroklav 23 S 23V S 29 S 29V S Fault 38 Sterilization 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 te
19. l processing on CPU now on AIN2 was previously on board faulty AIN 1 Exchange CPU board Page 2 of 2 Rev Nr 00 0 FAULT_35 for 31B doc MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 37 Sterilization PO FAULT 37 Sterilization PO Triggered by The measured pressure gives a calculated value for the temperature required for saturated steam that lies above the maximum temperature T1 T5 D5 for the sterilization disinfection during the period 71 15 Causes Remedy Operating fault Checks by personnel Appliance faults Repair by technical service personnel gt Control of Steam Generator Output ACOUT1 faulty Check the control on the basis of the program print out records Check voltage at output ACOUT 1 Print out pressure readings too high in comparison with pressures P 6 P10 Print out reading for temperature sensor Temp _Kess Prog AIN1 and for temperature sensor Temp_Chambr_Dis1 2 AIN2 correspond to one another but both are too high for the generation of saturated steam Voltage at ACOUT1 does not switch off during the regulation e Check thermal transition semiconductor relay ACOUT1 to the cooling body e Exchange CPU board Pressure sensor signal fluctuates Check using the record print out Pressure values show fluctuations peaks above the relevant pressures P 6 P10 Recorded temperatures from temperature sensor Temp_chambr_elec AIN1 and from temperature sensor Temp_Chambr_D
20. mperature 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 processing 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 saturat
21. n the solenoid valve Pressure release and the sterile filter If there is a leak water will be pulled in the direction of the solenoid valve Loosen the hose on the T fitting for the cooling water drain close with finger observe the pressure reading gt The solenoid valve for the vacuum 1 2 VV1 VV2 has a leak Vacuum Test program e Solenoid valve dirty Check the plunger is the seating tight Test under sub atmospheric conditions Vacuum Test program Observe the water column in the hose between the intake fitting for the chamber and the solenoid valve for the vacuum If there is a leak water will be pulled in the direction of the solenoid valve gt The solenoid valve for the feed pump VQ has a leak e Solenoid valve dirty Check the plunger is the seating tight Test under sub atmospheric conditions Vacuum Test program Observe the water column in the intake hose leading to the input of feed water between the conductivity sensor and the intake fittings of the pump and on the pressure side of the pump If there is a leak water will be pulled in the direction of the solenoid valve Leaks at the threaded connections and adhesive bonding Test under sub atmospheric conditions start the Leak search procedure in the Diagnosis Program 0 3 bar for 8 min Or feed compressed air into the autoclave through the vent filter fittings in Diagnosis program close out put 8 MV vent Brush a soapy solution on
22. nction of the pump You can check the input voltage for the vacuum pump as well as the function of the pump as follows Make sure that the intake side is vented since the pump will not start against a vacuum In the Diagnosis program switch on the solenoid valves for vacuum 1 2 VV1 VV2 by switching on the power output ACOUT 6 the valves are open when the current is applied In the Diagnosis Program switch on the pump faa Check Fuse F1 Is it OK fuse F1 PV by switching the power output ACOUT 3 Does the pump now run Test the power output Exchange the EP2 2 on the circuit board circuit board Proceed to the next step in the higher level with a meter Output OK fault analysis plan The pump is defective Exchange the pump gt Fault class the vacuum performance of the pump system is too weak gt The vacuum solenoid valves 1 2 do not open VV1 VV2 e The solenoid valve or coil or rectifier plug are defective The activation for the solenoid valve output 6 is defective Switch on output 6 in the Diagnosis program Check the electric control system and the switching behavior of the solenoid valve gt The flow resistance in the intake line is too high e Filter in the intake fitting on the sterilization chamber is clogged up The pressure sensor signal is defective or the processing of this signal is not correct e The level of the pressure sensor signal or the signal proces
23. r 00 0 FAULT_02 for 31B doc MELAG Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 6 Ventilation FAULT 6 Ventilation Triggered by The monitoring time limit Uet7 for the ventilation of the chamber until reaching pressure P12 was exceeded Causes Remedy Operating fault Check by personnel The sterile filter is dirty this will the autoclave show with the display Replace sterile filter As a check remove the filter and carry out a sterilization cycle with no load Exchange sterile filter Appliance fault Repair by technical service personnel gt Ventilation solenoid valve does not open e Solenoid valve blocked mechanically soiling Open valve casing clean or exchange valve e Control for ventilation solenoid valve faulty output ACOUTS giving permanent signal relay stuck Exchange CPU board gt Pressure sensor Analog input AIN 3 measures too low e Pressure sensor signal Signal processing to control too low Pressure signal after ventilation still lt P12 follow up fault would normally be Fault 35 Sterilization TO Check that the pressure displayed in Diagnosis Program Analog input is plausible displayed value should be current air pressure door open gt See also under Fault 35 Sterilization TO Pressure sensor analog input AIN 3 measures too low Exchange pressure sensor If a fault is still reported Exchange CPU board gt Parameter P12 wrong In Ser
24. sing is too high See the section Sensor Fault Group gt The suction of the vacuum pump is too weak Check the vacuum performance of the membrane as follows 1 Check to see if there are leaks 2 Make sure that the chamber to be evacuated is empty and dry 3 If there are no leaks and if the chamber is empty and dry check the performance of the pump It must be at least 800 mbar in 80 s or 900 mbar in 180 s 4 lf there are no leaks and if the chamber is empty and dry and if the performance of the pump does not meet the above level 800 mbar in 80 s or 900 mbar in 180 s then exchange the pump Seite 4 von 5 Rev Nr 98 0 FAULT_01 for 31B doc MELAG Fault diagnosis for Vacuklav 31 B Fault 1 Vacuum system Fault 1 Vacuum system Fault class leakages Leaks in the solenoid valves gt The solenoid valve for the venting VB will not close or it leaks e Check the coil the rectifier plug and the control at output 8 e Solenoid valve dirty Check the plunger is the seating tight Test under sub atmospheric conditions Vacuum Test program Remove the sterile filter Cover the opening of the sterile filter fitting with the palm of your hand Then observe the pressure reading gt The solenoid valve for pressure release 1 2 VDA1 VDA2 has a leak e Solenoid valve dirty Check the plunger is the seating tight Test under sub atmospheric conditions Vacuum Test program Observe the water column in the hose betwee
25. the points shown below and check to see if there are any air bubbles Adhesive bonded threaded hose Threaded connections connections at the chamber for temperature sensor Cutting ring threaded connection for steam generator chamber Cover seal for steam generator Swivelled threaded connection for the steam generator Plug of the pressure release Adhesive bond for the T fitting in filter the pressure release filter Seite 5 von 5 Rev Nr 98 0 FAULT_01 for 31B doc i Ni MELAG Fault diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 2 Steam generator FAULT 2 Steam generator Triggered by The following monitoring time limits have been exceeded e Uet2 for the warming up phases in the fractionations until reaching P5 warm start P39 cold start P43 cold start disinfection or e Uet3 for the heating up to the sterilization disinfection temperature T1 T5 Causes Remedy Operating fault Checks by personnel e Maximum load exceeded e Mains power voltage too low check mains installation Appliance fault Repair by technical service personnel gt Control steam generator Output ACOUT1 faulty check in Diagnosis Program Switch on ACOUT1 the LED for this output lights up Measure voltage at output ACOUT1 gt Capillary control 2 Overheating protection for the Steam Generator is faulty e Control unit is permanently open Check for passage when cold e Control unit switc
26. trol pressure reading on the print out at the time of the fault corresponds to the rated values P6 P10 The temperature of temperature sensor Temp_Chambr_Dis1 2 Analog input AIN2 corresponds to that of temperature sensor Temp_chambr_elec analog input AIN1 but both temperatures are well below the theoretical value needed for saturated steam Leaking no saturated steam do vacuum test high Pressure sensor signal faulty too e Pressure sensor faulty e Signal FAULT 34 Sterilization TU The control pressure reading on the print out at the time of the fault is lower than the rated values P6 P10 The overheating protection of the steam generator switches off e The capillary tube level regulator DIN 2 does not switch switches too late water shortage not recognised e The capillary control protection switches too soon c gt Exchange steam generator Overheating The temperature of temperature sensor Temp_Chambr_Dis1 2 analog input AIN2 corresponds to the theoretical saturated steam pressure i e only the temperature from the temperature sensor Temp_chambr_elec analog input AIN1 lies below the theoretical value needed for saturated steam Temperature signal from analog input AIN 1 faulty Change temperature sensors on AIN1 processing on CPU and AIN2 and restart program board faulty Exchange pressure sensor CPU board Page 3 of 3 gt Exchan
27. uctivity monitoring elec sensor conductivity Temperature sensor preheating AIN4 Temperature sensors Steam AIN1 AIN2 Seite 1 von 2 Rev No 00 0 FAULT_18 for 31B 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 voltage to pressure sensor at CPU board faulty Exchange pressure sensor Exchange CPU board Sequence of testing
28. ure in record corresponds to control pressures P 6 P10 Reading in record from temperature sensor Temp_Chamber_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 if there is no leaking see under Pressure sensor signal too high gt Temperature sensor Temp_Kess_Prog Analog input AIN1 measures too low 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_Chamber_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 processing on the CPU board proceed as follows Switch temperature sensors AIN1 and AIN2 and start the program again Fault 34 again Does temperature reading on print out correspond with the pressure to produce saturated steam E gt Exchange temperature Signal processing on CPU sensor now on AIN2 board faulty previously on AIN 1 gt Exchange CPU board Page 1 of 3 Rev Nr 00 0 FAULT_34 for 31B doc MELAG Fault Diagnosis Vacuklav 24 B 24V 30 B 31 B Fault 34 Sterilization TU gt Pressure sensor Analog input AIN 3 measures too high If the checks show there is no leak Vacuum test check through the following on the program print
29. vice Program check that the parameter setting P12 800 is correct if necessary update setting particularly for Vacuklav 24 and for installation at high altitudes Page 1 von 1 Rev Nr 00 0 FAULT_06 for 31B 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 FAULT_09 for 31B doc MELAG Fault Diagnosis Vacuklav 24 B 30 B 31 B Euroklav 23 S 23
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