BHO DZF-6050 - Vacuum Oven Operation Guidelines; Starting the Purging Process; Setting Target Temperature; Minimizing Temperature Spikes

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3. Guidelines using the vacuum oven
1. Put your target into the vacuum oven; Close the door; Close the black vacuum release; open the vacuum valve
and turn on the power to the vacuum pump to start the purging process,When vacuum level in the oven reaches
30 inch mercury (or read 76cmHg); Close the vacuum valve first BEFORE turn off the vacuum pump.
2. Turn on the Vacuum oven, Set target temperature and confirm it. Temperature in the oven starts to rise and
the heating indicator will blink.
3. If your target temperature is low, setting can be done twice to minimize temperature spike. For example, if
target temperature is 40°C, the first target temperature value can be set to 30°C, and when temperature rises
excessively and starts to drop, set the temperature one more time to 40°C.Thus,temperature overshooting can be
reduced or prevented and temperature dwelling state can be started ASAP.
4. Length of drying time should be selected based on humidity level of your sample. In case drying time is long
and vacuum level reduces, it is necessary to purge the oven again to restore desired vacuum level (make sure
your vacuum pump can work at your target temperature).
5.After purging drying process done, turn off the oven; open the vacuum release valve before opening the door.
It is possible that the sealing gasket may stuck onto the glass door and the door cannot be open easily. Wait a
while until the gasket restores itself before trying to open the door again.