|Model of Sterilizer:
Tuttnauer E/EA/EK/EAK Drying Problem
Tuttnauer E/EA/EK/EAK, the instruments or packs are damp or wet
|1. Dry cycle does not complete properly|
|1. Drying is available only in the Wrapped and Unwrapped Cycles
Liquid Cycles have no rapid exhaust or drying capacity
Drying time may be to short.
For E and EK machines with a full load and the door fully closed a typical dry time would be between 45 – 50 minutes. With the door cracked open at the beginning of the dry cycle the drying time should be approximately 30 minutes.
For EA and EKA machines with a full load a typical dry time would be approximately 20 minutes. On these models the door does not need to be opened during drying
Autoclave may be too heavily loaded
Drying problems can be the result of improper loading of the autoclave
The recommended loading for any Tuttnauer autoclave is for the instruments to be laid out one level deep. It is never recommended that instruments be laid on top of each other. In addition the total load in the autoclave should not exceed the poundage noted in the following table:
1730 3 lbs
2340 7 lbs
2540 9 lbs
3870 18 lbs
Incorrect loading will impede the drying ability of the autoclave.
Tuttnauer makes a pouch rack for sterilizing bagged instruments that will also aid in properly drying the instruments. The pouch rack allows the pouches to be stood on edge, as recommended by the pouch manufacturers. Use of the pouch rack automatically provides proper spacing for better sterilization and drying.
If a pouch rack is not used then the pouches should be laid on the tray plastic side down. Placing the paper side down will cause the pouch to retain moisture and prolong drying.
|2. The voltage coming from the wall outlet may be to low. The lower the voltage the less heat will be produced, the slower the drying.
The proper voltage range for 110 volt machines is between 110 and 125.
The proper range for 220 volt machines is between 220 and 235 volts.
The Safety Thermostat may be interrupting power during the drying cycle
The Air Outlet Valve maybe clogged or not opening properly which will not allow the Chamber to vent properly
The Exhaust Valve maybe clogged or not opening properly which will cause water to be left in the bottom of the Chamber at the end of the exhaust phase.
The Chamber Strainer may be clogged which will cause water to be left in the bottom of the Chamber at the end of the exhaust phase.
The Reservoir may be over filled allowing water to siphon back into the Chamber during Dry
There may be a pin hole in the body of the Cooling Coil allowing water to siphon back into the Chamber. This will only be true for E and EK machines
The open end of the Cooling Coil in the water Reservoir may be below the water line. This will result in water flowing back into the Chamber during the Drying Cycle. This will only be true for E and EK machines and can be easily corrected by reaching into the Reservoir and holding down the body of the coil while pulling up on and stretching the neck.
EA and EKA machines have a different Cooling Coil and a Check Valve to protect against this situation. If suck back is occurring during the Dry Cycle or normal cool down then replace the Check Valve.
|3. On EA and EKA models:
The HEPA Filter may be dirty or clogged.
The Dry Pump may not be turning on or may be weak
The Dry Solenoid may not be opening
The Fill Tube or Chamber Screen may be clogged interrupting the Air flow into the Chamber.
|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 or autoclaves, go to www.sterilizers.com ... or call 1-800-801-9934 E-mail us|