"1_Patriotic_Guy" wrote in message
. net...
Turtle,
Thanks for the initial lesson. I am trying to fill in the blanks and
learn so that I can use my spa for years to come.
1) The new motor is totally sealed as was the old. The plate on the new
motor says Type = CSM. I assume this stands for Continuos Service Motor?
Time = CONT I assume this is short for continuous?
2) The plate on the new motor also says: ENCL = DP, Form = PHM, Code = A,
Insulation Class = B, AMB = 40 degrees C Are these important? Can you
educate me on any of these that are.
3) On the new motor it says HP = 1.5 SPL If SPL is important, what is it?
4) For my knowledge/understanding; What is changed to make my motor run at
high speed (looking at it, the coils and windings look the same as a single
speed motor)? The thermostat turns the pump on low when it senses heat is
needed. High is only achieved by pushing a button on the user control panel
on top of the spa. But what changes to make the motor run on high. When I
wired it I connected red (low speed), black (high speed), white (common) and
green (ground) wires. Yet the old a new motors clearly say they are 110
volts. I used to think changing the voltage or do I mean amps? (e.g.
electricity flowed through just the red wire on low, 110 volts, and both the
red and black wire, 220 volts, on high) changed the speed but now assume I
was very wrong on this. Could you correct my thinking on this please.
5) If I understand you correctly, even though the plate on both motors says
1.5 horsepower, my new 110volt motor gets 11% less HP than my old because
the amps is lower, 3.1 on new, 3.46 on old? I assume there is an equation
for this, may I know it? (3.46 - 3.1) / 3.1 = .11 Is that the equation?
6) I understand you when you say 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.
I don't see power factor on the plate. How do I find out the power factor
of the motor?


This is Turtle.

We are getting very complex here over nothing.

1) All 1.5 horse power motors are not all equal. You get a motor with the same
horse power to replace it with and then see if the amp draw on the voltage you
choose is up to the original amperage as the old one. You must match up the
horse power and the amperage and then it will cut out you tring to figure out
the power factors and weither it will work or not.

2) You have not stated the horse power of the old one or the new one above
here and you may not be dealing with a 1.5 horse power motor to be replaced.
Which motor states that it is a 1.5 horse power -- the old or the new? Without
the stated horse power of both you can just go by amp draw to match it up.

3) As I see it you just have a too small of a motor to handle the job by
looking at the amp draw. You can have more amp draw but not less. Amp draw
equates to horse power in the world of motors. Match up the Amp draw / R.P.M.
Speed / Voltage and you really don't care about the horse power.

4) Most original manufactors of spa's order their motor to be put on the tube
with out the power factor stated on them for with out it. You get into trouble
finding a replacement like is happening here. Now if you match the amp draw up ,
you don't care about the power factor for your setting the load of the motor
back where it should be. The power factor is reflected in the amp draw amperage
stated on the motor. Match the amp draw and the power factor is not needed.

A example here some 1.5 H.P. motor may have a amp draw of 5 amps on 220 volt
service and other may have amp draw of 3.1 amps on 220 volt service. This
raising and lowering of the amperage on the 1.5 H.P. motor which amp draw
rasting on the motor is a reflection of the power factor stated in the amp draw
of the motor.

Don't get complex here and just install a replacement more with a amp draw the
same or a little more to make it work fine. Your old motor has a amp draw of 3.6
amps on 220 volt service. Get another motor with a amp draw of 3.6 amps or more.
Just get you a amp draw of 4 or 5 amp draw on 220 volt service and just do fine.
The Horse power may very from one motor to the other but the amp draw tell the
tale of it working or not.

The way you stated as the less ability of the old and the new motor is very much
true and is the way you figure if you short on ability of the old and new motor.
Your 11% short on amp draw to pull the load. Don't '' never '' expect a 3.1 amp
draw motor to pull a 3.6 amp draw load. You can use high amp draw motor to pull
the load but not less amp draw motor to pull the load.

Your making a mountain out of a mole hill here. Match the amp draw / r.p.m.'s /
voltage ,and be done with it. If you have these three things you don't care what
the horse power is. The Horse power rating is just to give the customer a ''
ideal '' of how much power they need and to be exact , you go to the amp draw /
speed / r.p.m.'s.

TURTLE