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bill1983
04-05-2007, 09:45 PM
does anybody know the correct wiring for a dual voltage fan motor
i have a friend (no really) who is having trouble wiring a fan motor on a copeland condensing unit. the fan motor is a lemac model 54824-603 35 range. it has 9 wires. red yellow blue black brown white pink pink and earth. it can be wired as single or three phase. it only has a single phase supply and has a capacitor lying next to it.he wants to get it going over the weekend and has no internet access. my rather obvious suggestion was to replace it with a single phase motor. he is unwillingto do this. he was asked to do this job by a "mate" and does not want to let him down. can anybody help before the weekend is through??
in summary therefore does anybody know the correct wiring in single phase for this type of motor?

NoNickName
04-05-2007, 10:29 PM
I don't think a single phase motor can be wired as a three phase one, or viceversa. Probably he refers to a star/delta motor. In this case there 6 phase wires plus 2 thermocontact wires plus earthing = 9.
The capacitor lying next to it has probably nothing to do with the fan.

A single phase fan has 7 wires: live, neutral, 2 thermocontact wires, 2 capacitor wires, plus earthing.

Which is which of the colours, we don't know. If you've got a fan model or label, then we can help.

bill1983
05-05-2007, 08:53 AM
sorry no label on the fan motor, just the information stamped on the body as above. i do vaguely remember somebody telling me about these motors but that must have been about 20 odd years ago. the other fact that confirms or seems to confirm this is that the motor looks like the original one.

NoNickName
05-05-2007, 11:29 AM
I've been able to find a catalogue of Lemac on their website. It looks like the wires are for 2 to 4 poles spees switching, and it probably is a three pole motor.
I confirm that single phase cannot be switched to three phase. It's electrically impossible.
The catalogue can be downloaded here http://www.lemac.com/start.htm

LRAC
05-05-2007, 12:16 PM
I've been able to find a catalogue of Lemac on their website. It looks like the wires are for 2 to 4 poles spees switching, and it probably is a three pole motor.
I confirm that single phase cannot be switched to three phase. It's electrically impossible.
The catalogue can be downloaded here http://www.lemac.com/start.htm

Copeland semi condensing units did have a dual voltage condenser fan motor that could be fitted as a single phase or three phase configuration, i just can't lay my hands on the wiring diagram.

The below link shows that it is possible and used in the industry by no means is it impossible?
www.shockfamily.net/triplehex/40hp.html (http://www.shockfamily.net/triplehex/40hp.html)

Regards
Lrac

Peter_1
05-05-2007, 06:49 PM
I confirm that single phase cannot be switched to three phase. It's electrically impossible.
The catalogue can be downloaded here http://www.lemac.com/start.htm
You can switch a capacitor on a single phase system which generates the 3th missing phase to drive a 3 phase system ;) .

LRAC
06-05-2007, 09:52 AM
Please find link for dual voltage fan motors PDF
http://www.aosmithmotors.com/pdf/brochures/bulletin3100/Acdc.pdf

Kind regards
Lrac

NoNickName
06-05-2007, 11:33 AM
Never heard of this and I don't see the point.

LRAC
06-05-2007, 02:12 PM
Never heard of this and I don't see the point.

Quite simple really 1 fan motor does all applications, just because you don't see the point doesn't mean its not a viable product. Only one motor to fit in the van.

Nothing is ever impossible or we wouldn't have what we already have.

Very clever for a manufacturer really.

Regards
Lrac

monkey spanners
06-05-2007, 02:23 PM
Copeland 620 watt 3 ph fan motor on 1 ph
25 uf capacitor

live :- brown/orange

neutral :- black/grey

Capacitor :- red/blue

other end of capacitor to neutral

THIS IS FOR NEW THE WIRING COLOURS:confused: so not the same as what you've got. This was copied from a new unit as supplied from copeland so it is do-able.
If i remember correctly what my old boss said its like colours to like so :-

live :- red/brown

neutral :- yellow/white

capacitor :- blue/black

other end of capacitor to neutral

run it up with an amp probe to check its not pulling too much current. You may need to swap the neutral and capacitor connections if it runs backwards.
The pink wires are the thermal overload, wire them into the control circuit.

Cheers Jon

p.s. a friend of mine once fitted a 3 ph compressor as a replacement on a 1 ph unit (supplied wrong by ***) with all the start and run capacitors and relays. It started and ran until he finished charging the system and then would'nt start:mad: :D

bill1983
06-05-2007, 11:29 PM
thanks for all your help and discussion i'll pass this on to the guy concerned and let you know how it worked out
have we all nothing better to do on a bank holiday weekend. is it dedication or sadness??

chillin out
07-05-2007, 12:03 AM
I have a wiring diagram for these 9 wire motors in the van. I will scan it tomorrow and post it here.

Edit: still looking for it.

Chillin:) :)

bill1983
07-05-2007, 02:25 PM
much appreciated chillin
bill

frank
07-05-2007, 08:50 PM
Good Link LRAC :)

chillin out
08-05-2007, 10:40 PM
Here we go, found it. Had to clean them up a bit using paint..
http://i11.tinypic.com/6732gw4.jpg
http://i12.tinypic.com/6fg5n69.jpg

Use "save image as" on the 'right click'
(There is two images)

Chillin:) :)

bill1983
09-05-2007, 09:26 PM
nice one chillin thanks for your help.
he eventually sussed out the wiring incorrectly and burnt out the motor a bit impatient and p****D off i think, and has since replaced it with a 25 w single phase motor i think he'll be replacing that one soon cos hes fitted the same blade
cheers all
bill

chillin out
09-05-2007, 10:36 PM
he eventually sussed out the wiring incorrectly and burnt out the motor a bit impatient and p****D off i think,
Well, we all got to learn somehow .....lol

Chillin:) :)