Jeio tech OV-11 Service Manual page 25

1-6. Vacuum
Classification Symptom
Vacuum Vacuum leakage
* How to check the leaking point *
- Easily error parts. -
1. Check and replace Door packing with vacuum status.
2. Check if Vent Valve fixing bolt is loosen.(if loosens easily.)
3. Check Reducer's NUT on Temperature Controlling.
Check point
- If you still find any faulty on the above parts. -
1. Fill water in the chamber by 1 cm.
2. Let the chamber vacuum status.
3. Turn the chamber left/right ,and up/down to find air leaking.
4. If Chamber is OK, but pipes are leaking, replace the leaking pipe.
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