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Vacuum Rotating Wrong2/4/16
I hired a guy who formerly operated a CNC nesting router I bought. He was walking us through the process of starting it up to surface the spoil board and when he turned on the vacuum he said it sounded funny. He was comparing the sound to the sound it made when at his previous shop with the previous owner of the machine. It dawned on me that the electrician I hired may have wired the vacuum pump wrong and the motor may be spinning in the wrong direction. What could be the damage to the vacuum pump? This machine is a Weeke Vantage 31S. I'm not going to sleep tonight. I have to call the electrician in the morning to see if he can confidently diagnose. Anyway, what are the chances that the pump is toast?
I will assume its three phase ? if so just switch two legs around. you should be fine.
paul is right reversed legs.
good point had a fellow call who blew his large regen on startup.. tried to blame mfg. turns out he hired the uncle expert (at no pay) whos experience had been all in residential single phase, (I am sure he meant well)
there is a difference in a industrial electrician and a residential electrician
I switched the legs. Now it has vacuum. I am getting an error message stating I don't have enough vacuum. It reads <4, needs to be <5. Could this be RPM's of the motor or possibly damage to the veins from spinning the wrong direction?
There is no way to know which direction a three phase motor will turn when wiring it. It is the first thing you need to do when starting it. You just bump the switch to check rotation and if it is not correct switch any two of the three power leads.
I hope your blower is not damaged.
When I started working at my last job I thought the dust collector was anemic, even given the terrible ductwork. Turned out the 15hp blower had been running backward for 10 years! No damage though, so that was a cheap upgrade.
Does this vacuum pump have carbon vanes to provide for the suction?
How far away is your vacuum pump from your table?
Here's what I found out. The machine will say I have vacuum too low, but when you initiate the program to surface the spoil board it over rides the low vacuum indication. So my pump is fine. One thing I don't know is how it should sound. I've never heard it running until I bought it. I think everything is fine with it though. Not sure what kind of vanes it has.