A new pump without a wiring schematic...

[DanG]

So I nabbed a couple of nice 220°F centrifugal pumps...

1/10HP 50/60Hz AC and the label reads use "3 mfd 370V capacitor".

Best I can sleuth is they are permanent split capacitor type with red, white, black and ground wires.

 - My impulse is to wire black to hot, white to neutral and bridge black to red with the 3 mfd capacitor.

Before I toss voltage at the pumps are there any contrary opinions?  Thanks

[12AX7]

Hi

220°F   or 220vac?  I don't know how to type the "  °  "   (know how to cut/paste) So I'm guessing you mean  220°f

I think that's the way I'd wire them.   Do you have a powerstat?
Building a hot tub?

ax7

[tecker]

They look big for 1/10 hp Ohm out and post the ao smith model

[DanG]

Umnn - 220°F IS 220°F... Abbreviation for many scientific units named after an individual such as Gabriel Fahrenheit and Anders Celsius take a single capital letter as abbreviation.

James Watt surely gets a giggle even today over the perpetual respect shown for one of his discoveries with the usage of " W " verus " w " to signify the International Scientific Unit "watt".  Also, know the keystroke sequence for the degree symbol " ° " is alternate-key plus 0176 on the numeric keypad.

I've hunted the numbers across the web and find its a custom order motor-pump without clear cross reference.

A.O. Smith motor MOD JF1H124N  SER 350096M

Gorman-Rupp pump MOD 12580-040 Cust # 0507313

The 16675-001-S model pump is very close save my pump amp draw is 0.4 amp on 60Hz.

I'll ring out ohmage a little later, off for chores now...

[wpowokal]

Dan is there an inbuilt capacitor or is it to be externally connected, with such a small capacitance it will be difficult to determine, so connect a meter, Analogue will be best but whatever connect your meter on ohms range  between red and white  if an internal capacitor is present there will be a dip in meter reading then it will read high.

Assuming no internal capacitor, measure ohms between red and black, red and white and white and black, red to black should be greater than red to white and white to black should be the sum of both previous readings. If the above is true then the red - white is the start winding and the capacitor will go between the white wire and the black, the red to black is the run winding. Therefore red is "hot" or active, black is neutral or common and white is the end of the start winding that connects to the capacitor, the other side of the capacitor connects to the black wire.

Then again in your country it may all be different.

allan

[tecker]

 There should be a thermal on one leg of the line (L1) .The cap circuit is from the third wire (the start) to L2 of the line in (or the leg with out the thermal) . As you said . There should be a larger resistance from L2 to the start wire .


  12523-056     1800 CENTRIFUGAL PUMP-230
12523-058    1800 CENTRIFUGAL PUMP-115
12523-059    1800 CENTRIFUGAL PUMP-230
12523-060    1800 CENTRIFUGAL PUMP-115
12523-061    1800 CENTRIFUGAL PUMP-230
12524-025    5600 CENTRIFUGAL PUMP-115
12580-010    2800SER CENTRIFUGAL PUMP (115VAC 60HZ)
12580-015    2800SER CENTRIFUGAL PUMP (115VAC 60HZ)
12580-028    2800SER CENTRIFUGAL PUMP (208/230VAC 50/60HZ)
12580-037    2800SER CENTRIFUGAL PUMP (208/230VAC 50/60HZ)
12580-038    2800SER CENTRIFUGAL PUMP (208/230VAC 50/60HZ)
12580-040    2800SER CENTRIFUGAL PUMP (208/230VAC 50/60HZ)
12580-041    2800SER CENTRIFUGAL PUMP (208/230VAC 50/60HZ)
12680-005    5600 CENTRIFUGAL PUMP-115

[DanG]

Yes - I found lists but not specifications or wiring diagrams... And since it's a custom order they did not comply with their standard labeling scheme.

And scarily no mention made of phase, with mention of inserting a capacitor I assumed its meant to be be run across the 208/230 leg of an industrial 3-phase circuit for 1-phase running.

With a analog VOM there is no capacitor charge dwell time, goes straight to value so external cap needs to be added.

I'll open them up only if I have to - nothing good comes from playing peek-a-boo with fractional motors.

Using digital VOM the readings do indeed sum - R-B 129 ohm; W-B 72 ohm; R-W 57 ohm.

If the above is true then the red - white is the start winding and the capacitor will go between the white wire and the black, the red to black is the run winding. Therefore red is "hot" or active, black is neutral or common and white is the end of the start winding that connects to the capacitor, the other side of the capacitor connects to the black wire.... Then again in your country it may all be different.

Is that still the plan?   Thanks!

[ghurd]

I don't think they would go backwards on the standard N.A. AC color codes.
Sounds almost like a lawsuit waiting to happen.

I would do it like you thought at first.
Black to hot, white to neutral, cap between red and black.

Worst that can happen is nothing too bad?
Motor won't turn and maybe pops a breaker?

G-

[DanG]

Errr... Maybe I fell back into 115VAC 1 phase mode writing the first post...  any respectable 230VAC circuit would be red/black.

Thusly so I may be wholly asbackwards if this is a 3-phase motor (cue mysterious music)...

EDIT: The idea for these is a dedicated PV panel and cheapie inverter (plus step up xfmr?) that will be 40 or more feet from the pumps. 

I thought $20 each for decent 200°F (at least) pumps justified jumping through a few hoops and spend a little extra elsewhere...

[willib]

129 - 57 is 72 if that matters ??

[DanG]

measure ohms between red and black, red and white and white and black, red to black should be greater than red to white and white to black should be the sum of both previous readings.

"Sum" = Summation is the operation of combining a sequence of numbers using addition; the result is their sum or total..

EDIT: forgot to smile  

[tecker]

That's the diagram alright it's single phase 208 to 230 . 

[DanG]

Thank you everyone who posted... I'll report back here when I put power to them!

[ghurd]

Oops.
220.  221.  Whatever it takes.  - Michael Keaton