The existing CNC routers were connected to three fixed-speed industrial vacuum pumps. The vacuum pumps were controlled individually using inefficient on-board controls. Most of the time, multiple vacuum pumps were running at vacuum levels
deeper than needed.
A new, Rogers KRVP Series rotary screw vacuum pump with a Variable Frequency Drive (VFD) was supplied by Rogers Machinery. The VFD changes the speed of the vacuum pump to maintain a stable vacuum level. The vacuum pump also features a built-in digital sequencer. The sequencer allows the new vacuum pump to control the two fixed speed vacuum pumps in a coordinated manner to maximize system efficiency. The system was installed and is working well and has been verified to save over $5,300 annually!