Overload relay in each phase. Indicate when back-up vacuum pump is operating. ASME construction, bronze body, with settings to match system requirements. Verify structural requirements with structural engineer. Construct concrete bases of dimensions indicated for vacuum pumps.
Install vacuum pumps on concrete bases.
Set and connect units according to manufacturer's written instructions. Install units level, plumb, and firmly anchored in locations indicated. Maintain manufacturer's recommended clearances. Install equipment so controls and devices needing service are accessible. Anchor vacuum pumps and receivers to substrate.