Tuttnauer 2540 EHS, Technician Manual

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84
Corrections
1.1
Close the door more tightly or readjust the door switch to activate earlier.
2.1
Check the valve as per para 10.4 sections 35 & 36. Replace either the fast exhaust valve (73), no return valve or clean the drain line as needed.
2.2
Clean clogged strainer.
Possible cause check-up and tests
1.1
As the pressure in the chamber rises during the heat up stage it presses outward on the door. This can cause the door switch to be released and cause the system to think the door is opened.
2.1
Fast exhaust valve (73) is faulty or the discharge line from the chamber to drain is clogged or the no return valve is faulty.
2.2
Strainer is clogged
10. TROUBLESHOOTING (cont.)
10.4
In Process Malfunction
Symptom
1.
Message DOOR UNLOCK is displayed during the heating stage, although the door is closed.
2.
The fast exhaust operation is too slow