RonRock
Aluminum
- Joined
- Mar 18, 2012
- Location
- Underwood, IA
So I finally got my RPC buttoned up and my JS 540 in place and ready to run.
Problem is when I push the start button the Mag Starter trips and no start. This is the same on both the hydraulics and disc drive motor. I suspect that the Mag Starters are tripping too easily. Not allowing for the sudden inrush of amperage on start. Admittedly just a guess on my part.
These Mag Starters are likely OEM and the machine is old. Unsure of a date.
The grinder motor is a Polyphase Motor BSS 170, 1.5HP 3400RPM, 220-440V 3PH. 4.9A-2.7A
The pump motor is a .5HP, 1700RPM 1.8A-1.1A.
I can get them both to run if I hold the "bail" down while starting. Once started I can release the "bail" and they run fine.
I removed both Mag Starters and cleaned all of the contacts and replaced them. I also removed the caps on the bottom of the starters and found oil inside of the caps. Not sure if this by design or from a hydraulic leak in the past. Seems odd that there would be oil in an electrical component, but again I guessed that it may be there as some type of restriction similar to a shock absorber.
When running the motors draw 1.9A-pump, 2.2A-grinder.
On Start 5.4A-pump, 12.7A-Grinder.
Those numbers are from 1 of the incoming lines with my Fluke Amp Clamp. I have seen higher start up amp numbers in my testing. So the running numbers are a bit high, but don't seem terrible to me. But the startup is much higher than the Mag Starters are rated at. The tag on bottom of them says FL Amps 1.98 & 4.75. the caps are adjustable, I have them as far down as I expect them to be adjusted for maximum amperage draw.
So anyone familiar with these starters? Do I have a starter issue or a motor issue? motor bearings? Can I install a start cap to help out?
Problem is when I push the start button the Mag Starter trips and no start. This is the same on both the hydraulics and disc drive motor. I suspect that the Mag Starters are tripping too easily. Not allowing for the sudden inrush of amperage on start. Admittedly just a guess on my part.
These Mag Starters are likely OEM and the machine is old. Unsure of a date.
The grinder motor is a Polyphase Motor BSS 170, 1.5HP 3400RPM, 220-440V 3PH. 4.9A-2.7A
The pump motor is a .5HP, 1700RPM 1.8A-1.1A.
I can get them both to run if I hold the "bail" down while starting. Once started I can release the "bail" and they run fine.
I removed both Mag Starters and cleaned all of the contacts and replaced them. I also removed the caps on the bottom of the starters and found oil inside of the caps. Not sure if this by design or from a hydraulic leak in the past. Seems odd that there would be oil in an electrical component, but again I guessed that it may be there as some type of restriction similar to a shock absorber.
When running the motors draw 1.9A-pump, 2.2A-grinder.
On Start 5.4A-pump, 12.7A-Grinder.
Those numbers are from 1 of the incoming lines with my Fluke Amp Clamp. I have seen higher start up amp numbers in my testing. So the running numbers are a bit high, but don't seem terrible to me. But the startup is much higher than the Mag Starters are rated at. The tag on bottom of them says FL Amps 1.98 & 4.75. the caps are adjustable, I have them as far down as I expect them to be adjusted for maximum amperage draw.
So anyone familiar with these starters? Do I have a starter issue or a motor issue? motor bearings? Can I install a start cap to help out?