Bob? Help?!
Posted: 23 Mar 2016, 15:24
I have just finished restoring a Wadkin 10" AGS and I 've installed an Axminster sale /bargain electric motor (2200W, 11.6A, class B ). The feed to my shed is 2x2.5mm live/earth/neutral, terminating in an old distribution board, on 30A fuses, yes, fuses, but is connected to the house dist. bd. which has RCD's. I presume they're 30A for the ring power circuit I .
The motor is connected directly into the bus bars/30A fuse of the shed box via a 16A dark blue ("Arctic"??) cable and a brand new DOL starter. It has a new pulley and a VERY tight pair of belts leading to the saw arbour.
Here's my problem: when I tested the motor - briefly, 10 seconds? - on a 13A plug, clattering and banging, followed by normal running, then she blew the fuse in the plug, but nothing tripped. When I connected via a BLUE commando plug/socket (like caravan parks?) and placed the DOL in-line, the motor starts, runs for 10-15 seconds, then stops. Unplug, hit reset on DOL, re-plug after a couple of mins, starts, runs for 10 seconds, stops.....unplug, reset, re-plug, starts, stops 10 seconds later......sheesh . I do notice a fair bit of vibration in the belts too.
It doesn't trip anything, nor does it blow the fuses.
ALL THIS UNDER NO LOAD - JUST THE BELTS LEADING TO THE ARBOUR.
Bob, does this sound like a run capacitor bandjaxed and needing replacement? Or....?
EDIT: Just had a brainwave...took the belts off and the motor clatters into action, runs beautifully and for a long time, admitttedly with slight slow rhythmic oscillation noise... put ONE belt on and we are back to square one....Is this a case of belts-tighter-than-a-duck's-b*m is causing motor bearings to overheat d'y'reckon?
Yours, hopefully, Sam
The motor is connected directly into the bus bars/30A fuse of the shed box via a 16A dark blue ("Arctic"??) cable and a brand new DOL starter. It has a new pulley and a VERY tight pair of belts leading to the saw arbour.
Here's my problem: when I tested the motor - briefly, 10 seconds? - on a 13A plug, clattering and banging, followed by normal running, then she blew the fuse in the plug, but nothing tripped. When I connected via a BLUE commando plug/socket (like caravan parks?) and placed the DOL in-line, the motor starts, runs for 10-15 seconds, then stops. Unplug, hit reset on DOL, re-plug after a couple of mins, starts, runs for 10 seconds, stops.....unplug, reset, re-plug, starts, stops 10 seconds later......sheesh . I do notice a fair bit of vibration in the belts too.
It doesn't trip anything, nor does it blow the fuses.
ALL THIS UNDER NO LOAD - JUST THE BELTS LEADING TO THE ARBOUR.
Bob, does this sound like a run capacitor bandjaxed and needing replacement? Or....?
EDIT: Just had a brainwave...took the belts off and the motor clatters into action, runs beautifully and for a long time, admitttedly with slight slow rhythmic oscillation noise... put ONE belt on and we are back to square one....Is this a case of belts-tighter-than-a-duck's-b*m is causing motor bearings to overheat d'y'reckon?
Yours, hopefully, Sam