On the circuit, install start and stop buttons, and add a thermal protection switch to the motor.
Add an electric contact pressure gauge to the outlet, and the contacts are connected in series to the motor control circuit. If overpressure occurs, the machine will shut down.
You can add a vacuum meter at the entrance to check the vacuuming situation.
Filters and one-way valves are required at both the outlet and the inlet, and quick-release interfaces can be used, such as ferrules and pipe expansions. Do not weld repeatedly.
Connect another pipe to the outlet and inlet to connect the equipment to be tested. If it is damaged, just replace it.