Changing motors

[Southern Spark]

I have been asked to do a job in a car wash/ accident repair shop. /they have just bought 2 pieces of 2nd hand equipment, An industrial extractor fan (9A) and a roller shutter door (2A). The motors are 3 phase, but the supply is single phase. I have not had any experience with changing motors over, only wiring them when they have already been installed. Is it just a case of simply changing the motor over, or is there a lot more to it than that?

 

[malcolmsanford]

As these are quite small loads have you considered using a phase inverter. plug an inverter into the single-phase household supply.

 

[Southern Spark]

I had considered a phase inverter, but as this side of things is fairly new to me, I was wondering how this would compare in terms of cost, reliabilty etc. Though I do like the how easy it sounds compared to changing motors over... I can seethe job turning into a bit of a nightmare by having to order two new motors and changing them over without the experience.

 

[malcolmsanford]

First have a check as these are relatively small motors you may find that they can be adapted for either 3 phase or single phase supplies.

If they can't then I would contact the makers and explain your situation, they may do conversion motors and kits for their equipment which would make any modification easy and still be in line with the standards for these units, especially PUWER.

If that fails then any modifications you do will have to ensure that the equipment stills comes in line to the EAWR and PUWER and this could be a real nightmare for you.

 

[netblindpaul]

Also, you will need to consider the control voltages.
Finally if the equipment is CE marked, then to comply with PUWER98 it will require re "marking" after the mod.

 

[Southern Spark]

thanks alot for the replies. I have taken all the details off the motors, which included manufacturers details. I will get in touch with them in the week, and see what they suggest.