How To Re-Wire A Potted Motor, Business Office 20: Hooking It All Dorsum Up

Now we’re at the terminal pace to getting your machine dorsum upwardly as well as running!

Start past times sliding your newly-renovated motor onto the shaft.

Tighten the 2 motor mounting screws securely.

Then, unscrew the terminal body. Note that I’ve tucked the 2 motor leads behind the terminal mounting bracket. This is thence that nosotros tin decide the proper length to cutting the tails.

Now we’re going to brand novel connections on the ends of the wires. As nosotros went over inwards Part 4, yous tin either brand your ain eyelet as well as solder it, or purpose crimp-on connectors.

Option 1: Self-Made Eyelets

The self-made-eyelet-and-soldering road requires plenty of wire, which is why we’ve left the “tails” of the motor leads thence long. You’ll require to calculate where to cutting the wire such that you’ll accept plenty of cloth to cast your ring. I propose touchstone as well as practicing on a fighting slice of wire first, thence yous tin live certainly where to cutting as well as strip inwards enterprise to create a telephone that volition all the same accomplish the post it needs to connect to inwards the terminal body. If inwards doubt, cutting also long, non also short!

Option 2: Crimp-On Connectors

Here I’m going to arrive at crimp-on connectors, which requires less length as well as is easier for me to execute. I mostly decide where to cutting past times letting the terminal trunk hang naturally, supported past times the lighting wires that are all the same connected, as well as and thence drawing the motor Pb over the knob that it volition stand upwardly for under. I as well as thence pinch the wire to the side of the knob furthest from the motor, every bit shown inwards the photo, as well as cutting there. This volition brand the terminal wire long plenty that I tin comfortably manipulate it into place.

Next I strip the wire ends to the length required for a crimp-on connector, but 1/4" or so.

Then I get together the connectors and, real important, I similar a shot cutting 2 pieces of 1/8” oestrus shrink tubing well-nigh 1/2" long.

I slide the oestrus shrink tubing onto the wires first…

…and alone as well as thence arrive at I attach the connectors as well as plication them on.

Then I slide the oestrus shrink tubing downward into place, every bit seen below. You’ll notice that at nowadays I’ve pulled the motor leads OVER the terminal mounting bracket.

I’ve done that thence that I tin larn the wiring a skillful distance away from everything else, to comfortably stand upwardly for a lighter nether the oestrus shrink tubing.

Now they’re heat-shrunk as well as create to go.

Re-Attaching the Wiring
When the telephone connectors are ready, tuck the wiring dorsum UNDER the mounting bracket, inwards their terminal position. Pull the blood-red as well as dark wires over to their appropriate posts on the terminal. (Here I’m working on a 201-2, which has a lite switch, as well as you’ll uncovering I’ve had to thread the dark wire underneath a unlike wire that arches over it, connecting the lite switch to the blood-red post.) If yous accept a cabinet-mounted machine, connect the human foot controller wires too, fifty-fifty if the machine isn’t inwards the cabinet yet. We require to arrive at some testing.

After connecting the correct wires to the correct posts, nosotros tighten upwardly the pollex screws. Get all 3 of them every bit absolutely tight every bit yous tin alongside your fingers.

Now it looks similar this. Be certainly you’ve got the motor leads tucked BEHIND the bracket…

…then screw the terminal dorsum into the machine. Do NOT overtighten this screw. The terminal trunk is made of plastic as well as slow to break. You alone desire to larn it tight plenty that it doesn’t wiggle approximately when yous plug the cord into it.

I’ve grossly overexposed the adjacent shot thence yous tin come across how the motor leads come upwardly downward unobtrusively from the motor as well as disappear behind the mounting bracket.

Now we’re at the minute of truth!

Running the Motor

I plug the machine dorsum inwards without re-attaching the handwheel, because I desire to run the motor alongside no load--that is to say, non powering the residue of the machine--to ensure that it runs smoothly. This agency if the motor doesn’t run, I know it tin alone live the motor that is the problem, as well as non some jam somewhere else inwards the machine.

Then I larn the push controller upwardly on the table. (And obviously, yous should non stick your fingers within the motor housing for whatsoever reason!)

Here are the results:

That’s the audio of a potted motor 201 running alongside no load. Sounds real unlike than when it’s connected to the residue of the machine, no? Sort of reminds me of a jet engine. I’ll larn out on running it for a few moments to ensure it runs consistently. And if you’ve inserted novel brushes, yous ought to run the motor for 5 minutes or thence anyway, to vesture the brushes in.

Warning #1: If yous run the motor every bit I’ve done inwards the video higher upwardly but it sounds different--for example, if it buzzes get-go as well as starts haltingly--STOP as well as unplug the motor immediately.

Warning #2: If yous run the motor for a few minutes as well as it gets warm, that’s fine, specially if you’ve been running it total tilt. But if it gets HOT, delight STOP as well as unplug the motor immediately.

Both of those warnings are signs that something is incorrect alongside your motor, either inwards the plain core, the windings or the armature itself. And that something mightiness live dangerous, which is why nosotros ought to unplug the machine immediately. Sadly, those problems are currently beyond the orbit of this blog.

But hopefully, everthing has turned out fine.

Re-attaching the Handwheel

It’s my habit to unplug the motor when I re-attach the handwheel, though strictly speaking it’s likely non necessary.

The adjacent matter I arrive at is purpose the grease syringe to dab some droplets of grease approximately the perimeter of the fiber gear. People oft over-grease these things, but yous actually don’t require to larn nuts alongside it.