Treadmill problems again...

Edtwozeronine · Jun 14, 2019

I first had issues about 6 months ago with my second hand treadmill tripping the ring part of the way into a session, since then I've sent off my controller board to treadmill doctor co uk. He repaired the board and sent it back after approximately a month.

Since then I've had the a dedicated circuit installed with a 16a RCBO so that if tripping occurs with the treadmill again, it will only effect a dedicated socket and not the ring main as well.

Unfortunately, a month into using the treadmill it's tripping the circuit after about 30 minutes of use. In college I learned of type C and type D RCDs and RCBOs that have different tripping dynamics to usual household type B breakers. Do you think one of these could prevent the tripping problem or is it likely to be something else?

Seems this is fairly wide spread problem having searched the interwebs...

Charlie_ · Jun 18, 2019

What test readings are you getting?

Edtwozeronine · Jun 18, 2019

Charlie_ said:
The problem could be as simple as worn carbon brushes plus build up of carbon deposits.
Replace brushes and clean up commutator,etc.

It's a Leeson direct current permanent magnet motor, rated at 180 volts, 6.5 amps, 3800 RPM, 1.25 HP, continuous duty, encl: open, INS:F, AMB: 40°C

Roger Black Gold Medal Treadmill that was originally supplyed by Argos but the email address on it for support is defunct.

Found a sticker saying November 01 on it, so i suppose 2001 manufacturer date...

I can't see the brushes on it, seems like a closed unit that runs a belt driven mechanism.

If it's new motor time it's going to be fun getting it out.

DPG · Jun 18, 2019

Good info, thanks.

Charlie_ · Jun 18, 2019

You should be able to see a pair of black discs, 1 on each side of the motor.. Behind the discs will be where the brushes are hiding..

marconi · Jun 18, 2019

I wonder if the treadmill is creating supply current disturbances which trip the RCBO because the motor - roller drive belt or the roller-moving conveyor is/are occasionally slipping with respect to each other creating juddering accelerations/decelerations of the motor. You might then examine the state of these components for signs of slipping, any wear and tear and make adjustments in their tension.

Edtwozeronine · Jun 18, 2019

Charlie_ said:
You should be able to see a pair of black discs, 1 on each side of the motor.. Behind the discs will be where the brushes are hiding..

Underneath a circular plastic disc removed with a flathead screwdriver I've popped out the brush from the top of the motor. Looks like a reasonable amount of meat on it to me, what do you guys think?

[ElectriciansForums.net] Treadmill problems again...

marconi · Jun 18, 2019

belt slippage basics:

Belt slippage basics – Vulcan Grip®

vulcan-grip.com

marconi · Jun 18, 2019

treadmill drive belt slipping - Google Search

marconi · Jun 18, 2019

telectrix · Jun 18, 2019

Edtwozeronine said:
Underneath a circular plastic disc removed with a flathead screwdriver I've popped out the brush from the top of the motor. Looks like a reasonable amount of meat on it to me, what do you guys think?View attachment 50069

i'd say that was 1/2 worn down. replace with new. take sharp edges off new ones with a fine file .

static zap · Jun 18, 2019

Edtwozeronine said:
No idea why you think it has anything other than a standard UK fused plug,...........

The euro plug (actually a socket) would be the appliance end.
Much like a PC desktop ,making the lead replaceable if damaged.
If present it would be a place to have a poor connection,but yours is probably an earlier model with integral cable.
(Do check for damage where it enters grommet) .. The
kind of checks done by PAT testing if done thoroughly !
(carpet tiles -totally adequate)

Edtwozeronine · Jun 18, 2019

static zap said:
The euro plug (actually a socket) would be the appliance end.
Much like a PC desktop ,making the lead replaceable if damaged.
If present it would be a place to have a poor connection,but yours is probably an earlier model with integral cable.
(Do check for damage where it enters grommet) .. The
kind of checks done by PAT testing if done thoroughly !
(carpet tiles -totally adequate)

O I C, Like a kettle lead (that's what I call them) for a computers and computer peripherals. Yeah, mine is integral and there doesn't seem to be any obvious signs of damage to it.

Edtwozeronine · Jun 18, 2019

telectrix said:
i'd say that was 1/2 worn down. replace with new. take sharp edges off new ones with a fine file .

Is it the sort of thing you'll find on evil-bay??? A bit of dust came out with both of them and where they've been in contact with the motor they seem to to be smooth and rounded, no roughness. Had to turn the treadmill on it's side and remove the bottom cover to get at the other one.

FatAlan · Jun 18, 2019

I think I’d have just gone out for a run by now.

Edtwozeronine · Jun 19, 2019

FatAlan said:
I think I’d have just gone out for a run by now.

Not in the current rainy conditions, one of the things a treadmill is good for if you have one that's working 100%. Strangely enough I got an hour out of it today without it tripping.

Treadmill problems again...

Edtwozeronine

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Charlie_

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Edtwozeronine

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DPG

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Charlie_

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marconi

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Edtwozeronine

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marconi

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Belt slippage basics – Vulcan Grip®

marconi

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marconi

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telectrix

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static zap

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Edtwozeronine

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Edtwozeronine

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FatAlan

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Edtwozeronine

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