I'm troubleshooting a pressure reading discrepancy with my Tuttnauer EZ10K autoclave. Despite replacing the AJUNC 3 board, the digital display still shows pressure readings approximately 10–12 PSI lower than my manual gauge. Here’s what I’ve done so far:
Replaced the AJUNC 3 board.
Performed a zero adjustment using test points (TP1–TP4). Voltage at TP1–TP4 is 0.5V at zero pressure, which is as expected.
The digital display shows zero pressure when the system is at zero, but the readings are still off by about 10–12 PSI at higher pressures.
I tested the pressure at 30 PSI:
Manual gauge: 30 PSI, approx. 1.5V
Digital display: 18 PSI, approx. 1.5V
The system appears to be reaching the correct temperature and pressure in the chamber (around 30 PSI at 273°F, based on the manual gauge), but the pressure readings remain off.
My question is: Does this discrepancy indicate an issue with the calibration or could it be related to another component, such as the digital board or wiring? I’m particularly concerned about the offset in the pressure readings between the manual gauge and the digital display.
Any suggestions or advice on how to proceed would be greatly appreciated!
I already did RESET. But nothing. Disconnected the equipment. Start and nothing. bot able to define date and time. Stays in 00.00.0000 or 00:00:00 Doesnt save the date and time i want to define. Any help would be appreciated.
We have an old Pelton and Crane that used to work well despite infrequent use/cleaning/servicing. Lately it has started to take 30 minutes to reach the 'green zone' for temp and PSI, and will often go over the maximum values of the green zone. Then the door latch is super hard to open, but a bit better after we cleaned the whole autoclave thoroughly. Any idea if this is something that we could repair ourselves? Once it is hot, it still works ok, but the drying process while on 'vent' also takes about 10 minutes rather than the advertised 3-5 min in the manual.
We might be looking for a replacement if we cannot fix ourselves, as we have gotten quotes of around $600 with no guarantee that it can be fixed from repair services.
7.24.3 Reset the unit to factory defaults ? Turn the power off. ? Press and hold the Stop button on the Keypad. ? Turn the power on. ? Wait for the normal display screen to come up. ç All the parameters will now have been reset, including the Automatic Water Fill.
To reset the system; proceed as follows: — Turn the main power switch OFF. — Turn the main power switch ON, while pressing the SEL. CYCLE key, until the program parameters are displayed. After resetting the autoclave, the autoclave is in stand-by mode
I try the same but us not working kindly can you help me to restore the factory program again
I own a veterinary surgery facility, and our Sterrad NX is telling us "H2O2 Adjustment Failed, call ASP" at start up. ASP will not provide any service or support to veterinary facilities, so I'm hoping somebody can help. We are located in Tucson, AZ. Thanks
