Lab companion OV-11 Operation Manual page 8

3) How to vacuum and vent (release)
(1) How to create vacuum;
① Put in the sample in the oven and close the door.
② Vent valve handle on right side must be located to close.
③ Turn Vacuum valve handle on the left side to 12 o'clock position (OPEN)
④ Connect hose between Vacuum pump and Vacuum nozzle on the above of Vacuum
valve.
⑤ Start Vacuum pump to create vacuum inside chamber.
⑥ After completing vacuuming, turn Vacuum valve handle on left side to 3 o'clock (Close)
⑦ Stop the Vacuum pump.
(2) How to release vacuum (Vent)
① Turn Vent valve on the right side to OPEN. At the moment coming- out air from
chamber can be controlled by handle.
Before stop vacuum pump, you must set Vacuum valve handle to Close.
Otherwise, vacuum pump oil can be flow into inside chamber due to vacuum state.
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