Operating Manual
Operation instructions Page7-3
7
．4 Manual cleaning
7
．4．1 Requirement
Finish reading all chapter above
All ports are connected well
Circulation and regeneration are all closed
All antechambers are all closed
Manual cleaning tube are connected well, refer to chapter “Installation preparation”
Enough working gas, about 10-12 times volume of box
7
．4．2 Cleaning process
Refer to diagram 2
·First setting box pressure between 3mbar-6mbar
·Connect decompression valve of cleaning gas bottle
·Connect flexible pipe used for cleaning
·Open flange blind plate of glovebox
·Put flexible pipe to the box from open hole
·Open decompression valve, set the pressure to 0.3---0.5 MPa
Through glove, clean the box from up to down back and forth with the gas in the flexible
box, especially corner and place pf loading parts
·When the system equips fridge or hermetic cavity, you need open the cover when you do
the cleaning (be sure that fridge switch is off, fridge is room temperature)
·Air and clean gas from the box will exhaust from opening flange port.
·Cleaning the box until O
2
< 100ppm
It takes 10-12 m
3
purging gas to drop to this value per m3 box .
Notice:
It will cause terrible smell gas to the air when you clean the box, it will cause the pollution to
the environment. Manufacturer is not responsible for this. You need use special method to
clean when using poisonous or radioactive substance.
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