Any Wiring Experts On Here?

[richie60]

I'm in the middle of stripping down a G88 and am thinking of putting the newer motor from an L78 I had in it.  The thing that's confusing me is running the wires back to the switch.  With the old motor, there were 3 wires going back to the switch, but the newer motor would only require two.

The pictures tell a better story:

The old motor showing basic terminal block with 3 wires running back to the switch.



Switch connections.



The later motor from the L78.




As you see in the last picture, the switch suppressor is integrated into the terminal block which saves rewiring one in at the switch.

So, running two wires back to the switch, how does the LED connect and which terminals do I use?

[ropie]

So, running two wires back to the switch, how does the LED connect and which terminals do I use?

Hi Richie,

Any help looking at these?

http://www.lencoheaven.net/forum/index.php?topic=68.msg31349#msg31349

As for the LED, is it not wired straight to the switch?

[ZM1080]

is it an led? I don't think so, isn't it a neon (at mains potential)?

[richie60]

is it an led? I don't think so, isn't it a neon (at mains potential)?

Wasn't sure.  Just assumed it was LED.  If it's a neon, is it polarity specific?


Right, from what I understand, there's a neutral cable that runs to the switch just so the neon light can connect to Neutral, the other to Switched Live output.

2nd cable is a Live feed, 3rd being Switched Live back to motor - the capacitor connects across these two, am I correct?

As the newer motor has a capacitor at the junction box, no need to wire one in at the switch?

Richie

[rfgumby]

The lamp is a neon, no polarity.

[richie60]

OK, thanks...

[ZM1080]

it's prudent to put the capacitor as near as possible to the source of trouble, in this case the switch contacts.

[daiwok]

I just received  a Lenco G88 this weekend and plugged it in and the motor was buzzing. The motor spindle was not moving like the transformers were acting in wrong poles and attracting the motor spindle and gripping it rather than making it turn. I checked all the wiring configuration and its the same as the photos above ..... so what could be wrong ? cap needs replacing at the switch ?

Gonna try and trouble shoot it tonight - any pointers much appreciated as I never had a 3 screw connection motor before, all the other connections to the motor are out of sight insider the motor ....

[addnoise]

Daiwok,

Can you spin the rotor by hand when the motor is turned off?
I had the same problem with an older motor were the rotor could spin around with the motor turned off but the moment I hit the on switch the rotor slammed into the stator and got jammed against it. Maybe the stator mounting hole for the rotor is less wide than later motors or maybe the rotor is slightly bigger than later models, I don't know for sure, I do know that there are some differences within the motors series with some of the rotors being somewhat bigger than others.

What you can do is to centre the coils as described here; http://www.lencoheaven.net/forum/index.php?topic=2088.0 , that worked for me but I had to be very precise when tightening the screws, the width between the stator and rotor since the gap between the stator and rotor with this motor is less than a twice folded paper sheet at any point.
When you pull out the rotor, check the stator for any debris in the rotor's mounting hole and clean it out.

Since you already have the motor half dissassembled at this point you propably want to lubricate it as well, it's just maintanance  see here for the details; http://www.lencoheaven.net/forum/index.php?topic=2087.0

But you can try to give it a little whack at first, when switched off, maybe the bearings will realign properly and your rotor wil be free to turn.

Good luck.....

[daiwok]

Thanks for the post addnoise.

I have aligned many motors to run smooth but nothing like this. Exactly the same issues here. Totally free to spin when not switched on. Once switched on it jams and starts to buzz. I have already relube cleaned and realigned, so I guess I need to be patient as I think you are right that this motor tends to be very tight compared to everything I have serviced before.

[daiwok]

ok problem fixed ! tolerance is tight, it need some real small realignment to stop it jamming up. Well there is a first for everything ....

[addnoise]

What you can do is slip tighten the stator screws and under load tap the stator in the desired direction with the help of a wood block and a small hammer.
Oh wait, I can hear you tapping with your little hammer already.......