Power Transmission
Lucie Hodkova offers a checklist of things to remember when dealing with new motors.
Installing and operating electric motors
M
otors are the workhorses of industry, so commonplace that they are often taken
for granted. Now, with the world economy growing and new regulations about energy efficiency coming in, many users will be installing new motors over the next few years.
1. Get expert advice on selecting new motors, even if it seems a straightforward choice.
2. Use a reputabable supplier. This will ensure on-time delivery, the correct specification and a quality product.
3. In the past OEMs could get away with cheap motors, so long as they lasted through the warranty period! But now if a motor fails now, the OEM could be facing a legally enforceable claim for lost production.
4. When your motor is delivered, check it through for signs of damage. Something apparently inconsequential, such as scratched
Fig. 1. Rotor is a reputable supplier and can ensure on-time delivery, the correct specification and a quality product. Distribution is being carried out from Rotor’s large Wellingborough, UK, warehousing facility.
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paint or damaged packaging, may be indicative of bigger internal problems. You could try turning the shaft to make sure it is straight and free running, check that lubrication is in place (smaller motors) or provided separately (larger motors). Look for signs of rust, corrosion, dirt or moisture. Inspect the coils and insulation, looking for damage and misalignment.
5. On delivery, check the boilerplate and paperwork and any labels affixed to the motor to make sure you have got exactly what you ordered.
6. Larger motors are often shipped partly or wholly disassembled. Check that you have received all the parts and that they fit together properly.
7. If you are not going to install the motor straightaway, make sure you have a safe place to store it.
8. Most motors are heavier than they look, so handle them with care or risk injury. Treat them with respect.
9. When it comes to installing the motor, you need to make sure that it is properly mounted, and that the holding bolts are secure. You should also check lubrication, alignment and electrical connections, multiple times each. It is good practice to stand back and look – does the motor look the right size? Does everything seem to be properly connected? Are the nuts and bolts all tightened? Are there
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