Hello, iam Robert Miller, You have yourself a good one!
Can I Leave A Vacuum Pump Running Overnight? [Solved]
It may be necessary to change the vacuum pump oil several times due to moisture contamination even if a cold trap is used. Allow the vacuum pump to run overnight without supervision only after a visible inspection of the drained vacuum pump oil reveals little or no moisture.27 Aug 2007
Leaving AC vacuum pump running on vehicle overnight. 
One Of the advantages of having many multiples
Vacuum not going as fast as I would like it at the end of the evening just leave it on overnight.
There’s no reason there’s no excuse to take shortcuts just because things are not going your way and as fast as you would like …
Leslie’s Tips: Running Your Pool Pump│Leslie’s
Happy water is moving water! The more circulation your pool water has, the clearer and healthier it
