"1_Patriotic_Guy" wrote in message
k.net...
Thanks for the initial contact Urtle.
Wow -- All info on old and replacement motor is the same unless noted below:

1) I'm not good with acronyms, what is OEM?
2) Brand is Hayward (who uses a Smith motor) and adds their "wet-end" pump.
3) HP is 1.5
4) RPM is 3450 / 1725
5) Max amps on old is 15 / 3.5 on old; 12 / 3.1 on new
I still have the original motor, the electrical contacts carbon up and
over-heat when motor is run on high. The same thing happened with the
replacement after using the spa for 1 hour. Previously the old motor was
used for as long as 3 hours at once on high and performed well for ten
years. The low speed function of the motor only comes on when the
thermostat determmines more heat is needed.

This is Turtle.

Like others said OEM is Original Equipment of Manufactor. THE SAME MOTOR.

You have a smaller motor as looking at the Max. Amp draw with even the Horse
Power being the same. You have a 20% less horse power or ability on 220 volt
service and a 11% less ability or horse power on 120 volt service. Look at the
old motor and see if you can get a horse power reading off it. If not you have
to go by Max. Amp draw for replacing with. Not all 1.5 H.P. motor are the same
in ability. There is Power factors to concider , R.P.M. , and Totally close or
open face for cooling the motor. These things can be a big difference.

Look at the Wiring setting for the speed to be 3,450 RPM's or the 1,725 RPM's.
If the motor is to be set at 1725 rpm's for the pump on low and 3450 rpm's on
high. Look at the thermostat about turning on two speeds at one time. Anytime
you turn on 2 speeds at one time. It will run hot and drop out. This is a very
long shot and just saying it for good measure.

Well what i will say is it sounds like and looks like you have a under powered
motor and asking more out of it than it can put out by looking at the /Max. Amp
draw and knowing nothing else.

Look you need to find the Model number of the old motor and get a OEM from your
supplier which they can order for you. Now you can call the maker of the spa [
like others have said ] to get a motor from them or get the spec.s of the motor
to get from your supplier. Here is what you need if you don't get a model number
of the old motor.

Horse Power -------------
R.P.M's ---- You have it already
Max. Amp draw -- You have it already .
Power factor of motor ------------------
Totally sealed motor or open face for cooling the motor -----------------
This should do it.


Now here is a wild one for good measure. take your old motor to a motor shop and
have them put new bearing in it if it is not burnt up. This is not a big cost
item to do.

TURTLE

P.S. Power factor is the ability to run at above the stated horse power for a
long period of time. If the factor is say 1.25 . You can get 25% more horse
power out of the motor and not hurt it.