Replacing vacuum systems

Consultation with the factory engineer, who is on of my relative, proved that some special designed circuitry is necessary to activate family use vacuum cleaner as a vacuum pump system for our new laboratory clinical use.
Conventional 4 signal wiring have 24V power supply, so 24V activating mechanical relay system should be prepared independently, now 200V 3 phase circuitry is not available no more.
He promised me to send circuitry drawing and mechanical relay parts as a sample trial attempt, now the chronic impasse is opened safe!

Judging from the professional point of view, they do not propose to use family use vacuum as a professional industrial vacuum system because of the water included suctioned air, it will go bad and destroyed soon, but I don't mind if such result might be introduced, countermeasure is just replacing them into the same, it is cheap like nothing and easy to find immediately.