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March 24, 2010
In a previous issue of Practice Tips we discussed the care of your Statim Cassette. This month, we’ll discuss the various error codes that can be displayed and what they mean. A quick glance at the causes of many error codes (below) will re-enforce the importance of a properly maintained cassette.
The error codes that can be displayed will vary depending on the vintage of your Statim. You should be able to determine what you have fairly quickly by simply looking into the reservoir.
The original Statim 2000 featured a water level sensor in the reservoir. It is a large plastic float inside the reservoir near the rear. The newer Statim has a water quality sensor instead of the float. It is a smaller object with two stainless steel pins. You can see either one by looking inside toward the back of the reservoir. On the new Statim, the words “select a cycle” appear on the readout screen, while “select a program” appears on the older Statim.
It is also very important that you use only distilled water, so much so that the manufacturer added the water quality sensor to the new one. If you distill your own water, make certain that you do NOT use the carbon filters that are sometimes included with them. The carbon will set off the water quality sensor.
If your Statim gets refurbished at the SciCan factory, they usually replace the water level sensor with the newer water quality sensor, so if yours has been refurbished, refer to the text on your readout to determine which one you have.
Check Cassette 1: Indicates failure to achieve adequate increase in temperature long term due to lack of power to the boiler. Check thermal fuse & replace if necessary.
Check Cassette 2: Failure to increase in temperature short term. Can be caused by steam leaks- see previous issue under “Cassette Care” & “Steam Leaks.”
Check Cassette 3: Failure to pressurize. Check for steam leaks as above & check solenoid valve. Disassemble & make certain solenoid plunger moves freely. See next issue "Decoding Statim Errors- Part 2" for instructions on checking & repairing a solenoid valve.
Check Cassette 4: Failure to begin sterilization after pressurization. See "Check Cassette 3."
Check Cassette 5: Boiler has dried out prematurely. Pump or boiler may have failed. Pump can be tested using pump tester bottle. See also "Check Cassette 6."
Check Cassette 6: Boiler temperature too high in relation to chamber. The pressure (in KpA) should be displayed within 10 seconds of the display changing from “pressurization” to “sterilization”.If it takes longer than this, the boiler is likely contaminated. Thoroughly clean & rinse the boiler using distilled water. Use a pump bottle tester to perform this procedure.
Make certain that only distilled water is being used with the sterilizer. Once again, if distilling your own water, make certain NOT to use the carbon filters included with many distillers. The carbon filter will degrade the quality of the water & may have caused a build-up in the boiler.
Check Cassette 7: Boiler temperature low. If you are unable to remove the cassette after venting, check for kinked exhaust tubing. If there are no kinks in the exhaust tubing or if the cassette is easily removable, check the solenoid valve as under “Check Cassette 3.”
Check Cassette 8: Chamber temperature too high in relation to boiler. Check for kinks in the exhaust hose and be sure the waste bottle is not full. If these are OK, check solenoid as described in “Check Cassette 3.”
Check Cassette (no number): Temperature in the chamber fails to drop within 60 seconds of VENTING has been initiated. Check for kinks in exhaust tubing. Check for clogged duct at rear of cassette- you may be able to clear by blowing out with compressed air. Check solenoid valve.
Cycle Fault 1: Indicates failure to achieve adequate temperature for a given time frame. No power to boiler- check thermal fuse. Check for steam leak & make certain cassette is not overloaded.
Cycle Fault 2: Indicates failure to achieve adequate increase in temperature for a given time frame. Check for steam leak paying particular attention to cassette seal. May also be overloaded as above.
Cycle Fault 3: Indicates failure to achieve adequate pressure & temperature. Check for visible steam leaks at cassette seal or cassette components. Replace as necessary. Leak may also be at safety valve or check valve. If no leaks are detected, see next issue "Decoding Statim Errors- Part 2" for instructions on checking & repairing a solenoid valve.
Cycle Fault 4: Indicates failure to achieve conditions required for sterilization after at least 15 minutes. Check cassette for leaks as in "Cycle Fault 3" & check solenoid.
Cycle Fault 5: Indicates pump was activated at an inappropriate time. The pump can be checked with a pump tester bottle.
Cycle Fault 6: Indicates boiler high temperature error. Boiler needs to be re-calibrated.
Cycle Fault 7: Indicates temperature drop within the cassette. Check cassette for leaks as in "Cycle Fault 3" & check solenoid.
Cycle Fault 8: Indicates a boiler low-temperature error. Make certain that the exhaust tubing is not clogged or kinked. Also verify the waste bottle is not full. Otherwise, the boiler is out of calibration & will need to be recalibrated.
Cycle Fault 10 (9 does not exist): Temperature has failed to drop for the appropriate cycle. Check exhaust tubing & bottle as above. Check solenoid valve. Check duct at the rear of the cassette tray. It may be helpful to blow the tray out with high pressure air.
Cycle Fault 11: The temperature has failed to drop during venting. Check as in "Cycle Fault 10."
Cycle Fault 12: Indicates a temperature measuring system error. Resistance of thermocouples should be 10 ohms at 70 degrees Fahrenheit.
Cycle Fault 14 & 16 (13 does not exist): Indicates an overheating boiler likely due to a pump failure. The pump can be checked with a pump tester bottle.
Cycle Fault 19 (17 & 18 do not exist): Indicates boiler must be recalibrated.
Cycle Fault 20: Possible pump failure. Pump can be tested with a pump tester bottle.
Cycle Fault 25 (21-24 do not exist): Power not supplied to boiler- check thermal fuse.
Cycle Fault 26: Failure to enter the sterilization phase soon enough after reaching sterilizing temperature. Boiler out of calibration- recalibrate.
Cycle Fault 27: Excessive temperature within boiler. Check pump with pump tester bottle. See our next issue "Decoding Statim Errors- Part 2."
Printer Fault: Check for paper jam.
No message but failure to print: Check printer cable. Disconnect & reconnect cable. Date & time should be displayed. Make certain paper is properly loaded (feeding from top).
Water Quality: You must remove all of the water. The easiest way to do this is to suction it out with operatory suction. Unplug the Statim & detach the exhaust hose by pushing in on the fitting where the hose attaches while pulling on the hose. To affix the hose, just push it into the fitting firmly. Obtain some new water & refill the reservoir.You may also upgrade your Statim to install a drain with a kit available from American Dental Accessories, Inc.
The water quality sensor can also become dirty; simply cleaning it with a Scotch Brite™ pad may also clear this error.
If distilling your own water, make certain not to use the carbon filter provided with many counter-top distillers. The carbon filters are there to improve the taste of distilled water and can trigger the sensor in a Statim.
Note that a number of problems can be caused by kinked exhaust tubing. The exhaust push-in elbow available from American Dental Accessories, Inc. (part #SM-440) swivels to prevent kinking. You should consider replacing the original fitting with the swivel elbow as a preventative measure. It also allows pushing the sterilizer closer to
the wall when combined with the 90° power cord (part #SM-44), freeing up counter space.
There are a number of references above to testing the pump and solenoid. Our next issue will continue to discuss problems you may encounter with your Statim and will go into detail on testing the pump and solenoid.
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