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Sterilizer Manufacturer:
Tuttnauer
Model of Sterilizer:
Problem Title:
Tuttnauer E/EA/EK/EAK Leaking Water or Steam
Problem Description:
Water leaking back into the chamber
Reasons
1. Either too much water inside the chamber or the solenoid is out of order

Solutions

1. The Reservoir may be over filled
For E and EK machines check that the exit end of the Cooling Coil is not below the water line. This can cause water to be sucked back into the Chamber during the Dry Cycle or if no Dry Cycle is programmed then just during the normal cool down of the machine.

For E and EK machines check if there is any kind of perforation in the Cooling Coil below the water line. This too can result in water being drawn back into the Chamber during Drying or cool down

For EA and EKA machines it is normal for the exit end of the Cooling Coil to be below the water line. These machines have a Check Valve to prevent back flow. If suck back is occurring during the Dry Cycle or normal cool down then replace the Check Valve.
2. Check if the Fill Valve is leaking. Using a metal object like a screwdriver

check if the Fill Solenoid is magnetized. When the valve is closed it should not be magnetic. If it is magnetic then check between TP10 and TP1 to tell if the Fill Valve is being told to open or close. A reading of 0 to1 volt DC means the valve should be open and 10 to 12 volts closed.

If there is a reading of 10 to 12 volts DC and the coil is magnetic this would indicate a short. Check the Black wire going to the coil for a short to ground. Also check the coil itself for a short.

If no shorts are detected and TP10 is showing a low reading and the coil is magnetized this would indicate a control problem.

Open the Fill Solenoid Valve and check for any debris that might be stopping the valve from closing properly. Debris can be either on the Plunger Seat or in the Plunger assembly restricting movement of the Plunger. Any debris interfering with the valve will allow water to run from the Reservoir into the Chamber.

Disassemble the valve and blow out the lines leading in and out of the valve base. This will remove any debris that may be floating in the line and intermittently obstructing the valve.

Also check the seat of the Plunger for any debris or deformities. If the seat is swelled or otherwise deformed replace the Plunger.

The technical information is just to help sterilizer users as reference to do their trouble shooting.
no guarranty implied. For each specific technical help to do with sterilizers
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