| Sterilizer Manufacturer: Tuttnauer |
| Model of Sterilizer: Tuttnauer 3870 E |
|
Problem Title:
Tuttnauer 3870 E- Heat Up Problem |
|
Problem Description:
Heat does not turn off |
|
Solutions |
| 1. Check that the preset temperature is not set any higher than 273F (134C) With the unit unplugged check the Heating Elements for a ground short. Take an ohm reading between the Heating Element terminals and the chassis With the unit unplugged remove the wires from the Heat SSR and check for a short circuit between terminals 3 & 4 and 1& 2 and 3&1 and 4&2 and 3 & 2 and 4 & 1. Make sure there are no direct shorts. If a direct short is found in the Heat SSR then replace the SSR. Reconnect the wires to the Heat SSR and with the unit running a sterilization cycle check between TP12 to TP1 on the Ajunc board with a volt meter for a DC signal between 0 and 1 volt when the unit is in the heat ON mode and between 3.5 and 5 volt DC when the heaters are in the OFF mode. If these voltages are not correct then there is a Control Problem If the control signal is correct at the test point then check if the signal is at the Heat SSR. A reading across terminals 3 and 4 should show 3.5 to 5 volts DC for the Heat SSR to be turned on and 0 to 1 volt if it should be off Replace the Heat SSR |
|
|
|||||
|
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 Contact Us |