I have a Coltri MCH-16 Compact with about 550 hrs on it, and is currently running a Baldor 3PH motor with a Phase-A-Maitc static phase converter. The system works well but only spins the compressor at 1061 RPM (my photo tachometer reading) which is much slower than the rated 1550 RPM. This is from running the static converter that reduces the HP rating 1/3 which makes the motor equivalent to a 5HP motor, also the drive pulley needed to be 1/3 smaller due to it being on a compressor that’s why the 1061 RPM. Like I said, the compressor works well but is a little slow filling cylinders. It is only running at 2/3rds of its rated performance.
Here is the plan, replace the Baldor 3PH motor with the Leeson single phase motor. Change pulley to an 8 inch one, which should bring the RPM’s back to the 1550 RPM speed. I found the motor on eBay for $419 which was the cheapest. Wiring the 3PH contactor for single phase looks pretty straight forward, so that shouldn’t be a problem.
Current: Baldor Motor M3219T-8, 7.5HP, 3450RPM, 3PH, 60HZ, 184T, 3628M, OPSB, F
Planned: Leeson Single Phase Motor 7.5HP, 3450RPM, 184, DP, 208-230V, 60HZ, Auto, Rigid C
My question, am I on the right track or is there a better way of doing things?
Thanks
Damon
Here is the plan, replace the Baldor 3PH motor with the Leeson single phase motor. Change pulley to an 8 inch one, which should bring the RPM’s back to the 1550 RPM speed. I found the motor on eBay for $419 which was the cheapest. Wiring the 3PH contactor for single phase looks pretty straight forward, so that shouldn’t be a problem.
Current: Baldor Motor M3219T-8, 7.5HP, 3450RPM, 3PH, 60HZ, 184T, 3628M, OPSB, F
Planned: Leeson Single Phase Motor 7.5HP, 3450RPM, 184, DP, 208-230V, 60HZ, Auto, Rigid C
My question, am I on the right track or is there a better way of doing things?
Thanks
Damon